fix: Pop up windows: About, Accounts, Account, Settings - opening on

centr of parent

CHANGELOG.md

@@ -1,5 +1,82 @@
 # Changelog
 
+## Squawk 0.2.2 (May 05, 2022)
+### Bug fixes
+- now when you remove an account it actually gets removed
+- segfault on unitialized Availability in some rare occesions
+- fixed crash when you open a dialog with someone that has only error messages in archive
+- message height is now calculated correctly on Chinese and Japanese paragraphs
+- the app doesn't crash on SIGINT anymore
+
+### Improvements
+- there is a way to disable an account and it wouldn't connect when you change availability
+- if you cancel password query an account becomes inactive and doesn't annoy you anymore
+- if you filled password field and chose KWallet as a storage Squawk wouldn't ask you again for the same password
+- if left the password field empty and chose KWallet as a storage Squawk will try to get that passord from KWallet before asking you to input it
+- accounts now connect to the server asyncronously - if one is stopped on password prompt another is connecting
+- actualized translations, added English localization file
+
+### New features
+- new "About" window with links, license, gratitudes
+- if the authentication failed Squawk will ask againg for your password and login
+- now there is an amount of unread messages showing on top of Squawk launcher icon
+- notifications now have buttons to open a conversation or to mark that message as read
+
+## Squawk 0.2.1 (Apr 02, 2022)
+### Bug fixes
+- build in release mode now no longer spams warnings
+- build now correctly installs all build plugin libs
+- a bug where the correction message was received, the indication was on but the text didn't actually change
+- message body now doesn't intecept context menu from the whole message
+- message input now doesn't increase font when you remove everything from it
+
+### Improvements
+- reduced amount of places where platform specific path separator is used
+- now message input is automatically focused when you open a dialog or a room
+- what() method on unhandled exception now actually tells what happened
+
+### New features
+- the settings are here! You con config different stuff from there
+- now it's possible to set up different qt styles from settings
+- if you have KConfig nad KConfigWidgets packages installed - you can choose from global color schemes
+- it's possible now to choose a folder where squawk is going to store downloaded files
+- now you can correct your message
+
+## Squawk 0.2.0 (Jan 10, 2022)
+### Bug fixes
+- carbon copies switches on again after reconnection
+- requesting the history of the current chat after reconnection
+- global availability (in drop down list) gets restored after reconnection
+- status icon in active chat changes when presence of the pen pal changes
+- infinite progress when open the dialogue with something that has no history to show
+- fallback icons for buttons, when no supported theme is installed (shunf4)
+- better handling messages with no id (shunf4)
+- removed dependency: uuid, now it's on Qt (shunf4)
+- better requesting latest history (shunf4)
+
+### Improvements
+- slightly reduced the traffic on the startup by not requesting history of all MUCs
+- completely rewritten message feed, now it works way faster and looks cooler
+- OPTIONAL RUNTIME dependency: "KIO Widgets" that is supposed to allow you to open a file in your default file manager
+- show in folder now is supposed to try it's best to show file in folder, even you don't have KIO installed
+- once uploaded local files don't get second time uploaded - the remote URL is reused
+- way better compilation time (vae)
+
+### New features
+- pasting images from clipboard to attachment (shunf4)
+- possible compilation for windows and macOS (shunf4)
+
+## Squawk 0.1.5 (Jul 29, 2020)
+### Bug fixes
+- error with sending attached files to the conference
+- error with building on lower versions of QXmpp
+- error on the first access to the conference database
+- quit now actually quits the app
+- history in MUC now works properly and requests messages from server
+- error with handling non lower cased JIDs
+- some workaround upon reconnection
+
+
 ## Squawk 0.1.4 (Apr 14, 2020)
 ### New features
 - message line now is in the same window with roster (new window dialog is still able to opened on context menu)

CMakeLists.txt

@@ -1,117 +1,173 @@
-cmake_minimum_required(VERSION 3.0)
-project(squawk)
+cmake_minimum_required(VERSION 3.4)
+project(squawk VERSION 0.2.2 LANGUAGES CXX)
 
-set(CMAKE_INCLUDE_CURRENT_DIR ON)
-set(CMAKE_CXX_STANDARD 14)
+cmake_policy(SET CMP0076 NEW)
+cmake_policy(SET CMP0079 NEW)
+set(CMAKE_CXX_STANDARD 17)
 
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
 
 include(GNUInstallDirs)
-include_directories(.)
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
 
-find_package(Qt5Widgets CONFIG REQUIRED)
-find_package(Qt5LinguistTools)
-
-if(NOT CMAKE_BUILD_TYPE)
-  set(CMAKE_BUILD_TYPE Debug)
+set(WIN32_FLAG "")
+set(MACOSX_BUNDLE_FLAG "")
+if (CMAKE_BUILD_TYPE STREQUAL "Release")
+  if (WIN32)
+    set(WIN32_FLAG WIN32)
+  endif(WIN32)
+  if (APPLE)
+    set(MACOSX_BUNDLE_FLAG MACOSX_BUNDLE)
+  endif(APPLE)
 endif()
 
-set(CMAKE_CXX_FLAGS_DEBUG "-g -Wall -Wextra")
-set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+add_executable(squawk ${WIN32_FLAG} ${MACOSX_BUNDLE_FLAG})
+target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR})
+
+option(SYSTEM_QXMPP "Use system qxmpp lib" ON)
+option(WITH_KWALLET "Build KWallet support module" ON)
+option(WITH_KIO "Build KIO support module" ON)
+option(WITH_KCONFIG "Build KConfig support module" ON)
+
+# Dependencies
+## Qt
+set(QT_VERSION_MAJOR 5)
+find_package(Qt5 COMPONENTS Widgets DBus Gui Xml Network Core REQUIRED)
+find_package(Boost COMPONENTS)
+
+target_include_directories(squawk PRIVATE ${Boost_INCLUDE_DIRS})
+target_include_directories(squawk PRIVATE ${Qt5_INCLUDE_DIRS})
+target_include_directories(squawk PRIVATE ${Qt5Widgets_INCLUDE_DIRS})
+target_include_directories(squawk PRIVATE ${Qt5DBus_INCLUDE_DIRS})
+target_include_directories(squawk PRIVATE ${Qt5Gui_INCLUDE_DIRS})
+target_include_directories(squawk PRIVATE ${Qt5Xml_INCLUDE_DIRS})
+target_include_directories(squawk PRIVATE ${Qt5Network_INCLUDE_DIRS})
+target_include_directories(squawk PRIVATE ${Qt5Core_INCLUDE_DIRS})
+
+## QXmpp
+if (SYSTEM_QXMPP)
+  find_package(QXmpp CONFIG)
+
+  if (NOT QXmpp_FOUND)
+    set(SYSTEM_QXMPP OFF)
+    message("QXmpp package wasn't found, trying to build with bundled QXmpp")
+  else ()
+    message("Building with system QXmpp")
+  endif ()
+endif ()
+
+if (NOT SYSTEM_QXMPP)
+  target_link_libraries(squawk PRIVATE qxmpp)
+  add_subdirectory(external/qxmpp)
+else ()
+  target_link_libraries(squawk PRIVATE QXmpp::QXmpp)
+endif ()
+
+## KIO
+if (WITH_KIO)
+  find_package(KF5KIO CONFIG)
+
+  if (NOT KF5KIO_FOUND)
+    set(WITH_KIO OFF)
+    message("KIO package wasn't found, KIO support modules wouldn't be built")
+  else ()
+    target_compile_definitions(squawk PRIVATE WITH_KIO)
+    message("Building with support of KIO")
+  endif ()
+endif ()
+
+## KWallet
+if (WITH_KWALLET)
+  find_package(KF5Wallet CONFIG)
+
+  if (NOT KF5Wallet_FOUND)
+    set(WITH_KWALLET OFF)
+    message("KWallet package wasn't found, KWallet support module wouldn't be built")
+  else ()
+    target_compile_definitions(squawk PRIVATE WITH_KWALLET)
+    message("Building with support of KWallet")
+  endif ()
+endif ()
+
+if (WITH_KCONFIG)
+  find_package(KF5Config CONFIG)
+  if (NOT KF5Config_FOUND)
+    set(WITH_KCONFIG OFF)
+    message("KConfig package wasn't found, KConfig support modules wouldn't be built")
+  else()
+    find_package(KF5ConfigWidgets CONFIG)
+    if (NOT KF5ConfigWidgets_FOUND)
+      set(WITH_KCONFIG OFF)
+      message("KConfigWidgets package wasn't found, KConfigWidgets support modules wouldn't be built")
+    else()
+      target_compile_definitions(squawk PRIVATE WITH_KCONFIG)
+      message("Building with support of KConfig")
+      message("Building with support of KConfigWidgets")
+    endif()
+  endif()
+endif()
+
+## Signal (TODO)
+# find_package(Signal REQUIRED)
+
+## LMDB
+find_package(LMDB REQUIRED)
+
+# Linking
+target_link_libraries(squawk PRIVATE Qt5::Core Qt5::Widgets Qt5::DBus Qt5::Network Qt5::Gui Qt5::Xml)
+target_link_libraries(squawk PRIVATE lmdb)
+target_link_libraries(squawk PRIVATE simpleCrypt)
+# Link thread libraries on Linux
+if(UNIX AND NOT APPLE)
+  set(THREADS_PREFER_PTHREAD_FLAG ON)
+  find_package(Threads REQUIRED)
+  target_link_libraries(squawk PRIVATE Threads::Threads)
+endif()
+
+# Build type
+if (NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Debug)
+endif ()
+
 message("Build type: ${CMAKE_BUILD_TYPE}")
 
+if(CMAKE_COMPILER_IS_GNUCXX)
+  set (COMPILE_OPTIONS -fno-sized-deallocation)   # for eliminating _ZdlPvm
+  if (CMAKE_BUILD_TYPE STREQUAL "Release")
+    list(APPEND COMPILE_OPTIONS -O3)
+  endif()
+  if (CMAKE_BUILD_TYPE STREQUAL Debug)
+    list(APPEND COMPILE_OPTIONS -g)
+    list(APPEND COMPILE_OPTIONS -Wall)
+    list(APPEND COMPILE_OPTIONS -Wextra)
+  endif()
 
-set(squawk_SRC
-  main.cpp
-  exception.cpp
-  signalcatcher.cpp
-  shared/global.cpp
-  shared/utils.cpp
-  shared/message.cpp
-  shared/vcard.cpp
-  shared/icons.cpp
-)
+  message("Compilation options: " ${COMPILE_OPTIONS})
+  target_compile_options(squawk PRIVATE ${COMPILE_OPTIONS})
+endif(CMAKE_COMPILER_IS_GNUCXX)
 
-set(squawk_HEAD
-  exception.h
-  signalcatcher.h
-  shared.h
-  shared/enums.h
-  shared/message.h
-  shared/global.h
-  shared/utils.h
-  shared/vcard.h
-  shared/icons.h
-)
-
-configure_file(resources/images/logo.svg squawk.svg COPYONLY)
-execute_process(COMMAND convert -background none -size 48x48 squawk.svg squawk48.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-execute_process(COMMAND convert -background none -size 64x64 squawk.svg squawk64.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-execute_process(COMMAND convert -background none -size 128x128 squawk.svg squawk128.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-execute_process(COMMAND convert -background none -size 256x256 squawk.svg squawk256.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-
-configure_file(packaging/squawk.desktop squawk.desktop COPYONLY)
-
-set(TS_FILES 
-    translations/squawk.ru.ts
-)
-qt5_add_translation(QM_FILES ${TS_FILES})
-add_custom_target(translations ALL DEPENDS ${QM_FILES})
-
-qt5_add_resources(RCC resources/resources.qrc)
-
-option(SYSTEM_QXMPP "Use system qxmpp lib" ON) 
-option(WITH_KWALLET "Build KWallet support module" ON) 
-
-if (SYSTEM_QXMPP) 
-    find_package(QXmpp CONFIG)
-    
-    if (NOT QXmpp_FOUND)
-        set(SYSTEM_QXMPP OFF)
-        message("QXmpp package wasn't found, trying to build with bundled QXmpp")
-    else()
-        message("Building with system QXmpp")
-    endif()
-endif()
-
-if(NOT SYSTEM_QXMPP)
-    add_subdirectory(external/qxmpp)
-endif()
-
-if (WITH_KWALLET)
-    find_package(KF5Wallet CONFIG)
-    
-    if (NOT KF5Wallet_FOUND)
-        set(WITH_KWALLET OFF)
-        message("KWallet package wasn't found, KWallet support module wouldn't be built")
-    else()
-        add_definitions(-DWITH_KWALLET)
-        message("Building with support of KWallet")
-    endif()
-endif()
-
-add_executable(squawk ${squawk_SRC} ${squawk_HEAD} ${RCC})
-target_link_libraries(squawk Qt5::Widgets)
-
-add_subdirectory(ui)
+add_subdirectory(main)
 add_subdirectory(core)
-
 add_subdirectory(external/simpleCrypt)
-
-target_link_libraries(squawk squawkUI)
-target_link_libraries(squawk squawkCORE)
-target_link_libraries(squawk uuid)
-
-add_dependencies(${CMAKE_PROJECT_NAME} translations)
+add_subdirectory(packaging)
+add_subdirectory(plugins)
+add_subdirectory(resources)
+add_subdirectory(shared)
+add_subdirectory(translations)
+add_subdirectory(ui)
 
 # Install the executable
 install(TARGETS squawk DESTINATION ${CMAKE_INSTALL_BINDIR})
-install(FILES ${QM_FILES} DESTINATION ${CMAKE_INSTALL_DATADIR}/squawk/l10n)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk.svg DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/scalable/apps)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk48.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/48x48/apps RENAME squawk.png)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk64.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/64x64/apps RENAME squawk.png)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk128.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/128x128/apps RENAME squawk.png)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk256.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/256x256/apps RENAME squawk.png)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk.desktop DESTINATION ${CMAKE_INSTALL_DATADIR}/applications)
+install(FILES README.md DESTINATION ${CMAKE_INSTALL_DATADIR}/macaw.me/squawk)
+install(FILES LICENSE.md DESTINATION ${CMAKE_INSTALL_DATADIR}/macaw.me/squawk)
+
+if (CMAKE_BUILD_TYPE STREQUAL "Release")
+  if (APPLE)
+    add_custom_command(TARGET squawk POST_BUILD COMMENT "Running macdeployqt..."
+      COMMAND "${Qt5Widgets_DIR}/../../../bin/macdeployqt" "${CMAKE_CURRENT_BINARY_DIR}/squawk.app"
+    )
+  endif(APPLE)
+endif()
+

LICENSE.md

@@ -595,17 +595,17 @@ pointer to where the full notice is found.
 
 	<one line to give the program's name and a brief idea of what it does.>
 	Copyright (C) <year>  <name of author>
-	
+
 	This program is free software: you can redistribute it and/or modify
 	it under the terms of the GNU General Public License as published by
 	the Free Software Foundation, either version 3 of the License, or
 	(at your option) any later version.
-	
+
 	This program is distributed in the hope that it will be useful,
 	but WITHOUT ANY WARRANTY; without even the implied warranty of
 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 	GNU General Public License for more details.
-	
+
 	You should have received a copy of the GNU General Public License
 	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 

README.md

@@ -4,16 +4,20 @@
 [![AUR version](https://img.shields.io/aur/version/squawk?style=flat-square)](https://aur.archlinux.org/packages/squawk/)
 [![Liberapay patrons](https://img.shields.io/liberapay/patrons/macaw.me?logo=liberapay&style=flat-square)](https://liberapay.com/macaw.me)
 
-![Squawk screenshot](https://macaw.me/images/squawk/0.1.4.png)
+![Squawk screenshot](https://macaw.me/images/squawk/0.2.2.png)
 
 ### Prerequisites
 
 - QT 5.12 *(lower versions might work but it wasn't tested)*
-- uuid _(usually included in some other package, for example it's ***libutil-linux*** in archlinux)_
 - lmdb
-- CMake 3.0 or higher
+- CMake 3.4 or higher
 - qxmpp 1.1.0 or higher
-- kwallet (optional)
+- KDE Frameworks: kwallet (optional)
+- KDE Frameworks: KIO (optional)
+- KDE Frameworks: KConfig (optional)
+- KDE Frameworks: KConfigWidgets (optional)
+- Boost (just one little hpp from there)
+- Imagemagick (for compilation, to rasterize an SVG logo)
 
 ### Getting
 
@@ -33,6 +37,26 @@ You can also clone the repo and build it from source
 
 Squawk requires Qt with SSL enabled. It uses CMake as build system.
 
+Please check the prerequisites and install them before installation.
+
+#### For Windows (Mingw-w64) build
+
+You need Qt for mingw64 (MinGW 64-bit) platform when installing Qt.
+
+The best way to acquire library `lmdb` and `boost` is through Msys2.
+
+First install Msys2, and then install `mingw-w64-x86_64-lmdb` and `mingw-w64-x86_64-boost` by pacman.
+
+Then you need to provide the cmake cache entry when calling cmake for configuration:
+
+```
+cmake .. -D LMDB_ROOT_DIR:PATH=<Msys2 Mingw64 Root Directory> -D BOOST_ROOT:PATH=<Msys2 Mingw64 Root Directory>
+```
+
+`<Msys2 Mingw64 Root Directory>`: e.g. `C:/msys64/mingw64`.
+
+---
+
 There are two ways to build, it depends whether you have qxmpp installed in your system
 
 #### Building with system qxmpp
@@ -44,7 +68,7 @@ $ git clone https://git.macaw.me/blue/squawk
 $ cd squawk
 $ mkdir build
 $ cd build
-$ cmake ..
+$ cmake .. [-D LMDB_ROOT_DIR:PATH=...] [-D BOOST_ROOT:PATH=...]
 $ cmake --build .
 ```
 
@@ -57,16 +81,20 @@ $ git clone --recurse-submodules https://git.macaw.me/blue/squawk
 $ cd squawk
 $ mkdir build
 $ cd build
-$ cmake .. -D SYSTEM_QXMPP=False
+$ cmake .. -D SYSTEM_QXMPP=False [-D LMDB_ROOT_DIR:PATH=...] [-D BOOST_ROOT:PATH=...]
 $ cmake --build .
 ```
 
+You can always refer to `appveyor.yml` to see how AppVeyor build squawk.
+
 ### List of keys
 
 Here is the list of keys you can pass to configuration phase of `cmake ..`. 
 - `CMAKE_BUILD_TYPE` - `Debug` just builds showing all warnings, `Release` builds with no warnings and applies optimizations (default is `Debug`)
 - `SYSTEM_QXMPP` - `True` tries to link against `qxmpp` installed in the system, `False` builds bundled `qxmpp` library (default is `True`)
 - `WITH_KWALLET` - `True` builds the `KWallet` capability module if `KWallet` is installed and if not goes to `False`. `False` disables `KWallet` support (default is `True`)
+- `WITH_KIO` - `True` builds the `KIO` capability module if `KIO` is installed and if not goes to `False`. `False` disables `KIO` support (default is `True`)
+- `WITH_KCONFIG` - `True` builds the `KConfig` and `KConfigWidgets` capability module if such packages are installed and if not goes to `False`. `False` disables `KConfig` and `KConfigWidgets` support (default is `True`)
 
 ## License
 

appveyor.yml

@@ -0,0 +1,117 @@
+image:
+  - Visual Studio 2019
+  - "Previous Ubuntu1804"
+  - macOS-Mojave
+
+branches:
+  except:
+    - gh-pages
+
+for:
+-
+  matrix:
+    only:
+      - image: Visual Studio 2019
+
+  environment:
+      QTDIR: C:\Qt\5.15.2\mingw81_64
+      QTTOOLDIR: C:\Qt\Tools\mingw810_64\bin
+      QTNINJADIR: C:\Qt\Tools\Ninja
+
+  install:
+      - set PATH=%QTTOOLDIR%;%QTNINJADIR%;%QTDIR%\bin;%PATH%
+      - git submodule update --init --recursive
+
+  before_build:
+      - choco install --yes zstandard
+      - choco install --yes --version=7.1.0.2 imagemagick.app
+      - set PATH=C:\Program Files\ImageMagick-7.1.0-Q16-HDRI;%PATH%
+
+      - mkdir lmdb
+      - cd lmdb
+      - curl -OL https://mirror.msys2.org/mingw/mingw64/mingw-w64-x86_64-lmdb-0.9.27-1-any.pkg.tar.zst
+      - zstd -d ./mingw-w64-x86_64-lmdb-0.9.27-1-any.pkg.tar.zst
+      - tar -xvf ./mingw-w64-x86_64-lmdb-0.9.27-1-any.pkg.tar
+      - cd ..
+
+      - mkdir boost
+      - cd boost
+      - curl -OL https://repo.msys2.org/mingw/mingw64/mingw-w64-x86_64-boost-1.77.0-2-any.pkg.tar.zst
+      - zstd -d ./mingw-w64-x86_64-boost-1.77.0-2-any.pkg.tar.zst
+      - tar -xvf ./mingw-w64-x86_64-boost-1.77.0-2-any.pkg.tar
+      - cd ..
+
+      - mkdir build
+      - cd build
+      - cmake -GNinja -DCMAKE_BUILD_TYPE:String=Release -DCMAKE_PREFIX_PATH:STRING=%QTDIR% -DLMDB_ROOT_DIR:PATH=C:/projects/squawk/lmdb/mingw64  -DBOOST_ROOT:PATH=C:/projects/squawk/boost/mingw64 ..
+
+  build_script:
+      - cmake --build .
+      - mkdir deploy
+      - cd deploy
+      - copy ..\squawk.exe .\
+      - copy ..\external\qxmpp\src\libqxmpp.dll .\
+      - windeployqt .\squawk.exe
+      - windeployqt .\libqxmpp.dll
+      - cd ..\..
+
+  artifacts:
+      - path: build/deploy/squawk.exe
+        name: Squawk executable (Qt 5.15.2)
+
+      - path: build/deploy
+        name: Squawk deployment with Qt Framework
+    
+-
+  matrix:
+    only:
+      - image: macOS-Mojave
+
+  install:
+      - brew install lmdb imagemagick boost
+      - git submodule update --init --recursive
+
+  before_build:
+      - mkdir build
+      - cd build
+      - cmake -DCMAKE_BUILD_TYPE:String=Release -DCMAKE_PREFIX_PATH:STRING=$HOME/Qt/5.15.2/clang_64 ..
+
+  build_script:
+      - cmake --build .
+
+  after_build:
+      - zip -r squawk.app.zip squawk.app
+
+  artifacts:
+      - path: build/squawk.app/Contents/MacOS/squawk
+        name: Squawk executable (Qt 5.15.2)
+      - path: build/external/qxmpp/src/
+        name: QXMPP
+      - path: build/squawk.app.zip
+        name: Squawk Bundle with Qt Framework (Qt 5.15.2)
+
+-
+  matrix:
+    only:
+      - image: "Previous Ubuntu1804"
+
+  install:
+      - ls $HOME/Qt
+      - sudo apt update
+      - sudo apt install -y liblmdb-dev liblmdb0 imagemagick mesa-common-dev libglu1-mesa-dev libboost-all-dev
+      - git submodule update --init --recursive
+
+  before_build:
+      - mkdir build
+      - cd build
+      - cmake -DCMAKE_BUILD_TYPE:String=Release -DCMAKE_PREFIX_PATH:STRING=$HOME/Qt/5.12.10/gcc_64 -DCMAKE_BUILD_RPATH="\$ORIGIN" ..
+
+  build_script:
+      - cmake --build .
+
+  after_build:
+      - zip -r squawk.zip squawk -j external/qxmpp/src/libqxmpp*
+
+  artifacts:
+      - path: build/squawk.zip
+        name: Squawk executable and libraries (Qt 5.12)

cmake/FindLMDB.cmake

@@ -0,0 +1,52 @@
+#This file is taken from here https://gitlab.ralph.or.at/causal-rt/causal-cpp/, it was GPLv3 license
+#Thank you so much, mr. Ralph Alexander Bariz, I hope you don't mind me using your code
+
+# Try to find LMDB headers and library.
+#
+# Usage of this module as follows:
+#
+#     find_package(LMDB)
+#
+# Variables used by this module, they can change the default behaviour and need
+# to be set before calling find_package:
+#
+#  LMDB_ROOT_DIR          Set this variable to the root installation of
+#                            LMDB if the module has problems finding the
+#                            proper installation path.
+#
+# Variables defined by this module:
+#
+#  LMDB_FOUND               System has LMDB library/headers.
+#  LMDB_LIBRARIES           The LMDB library.
+#  LMDB_INCLUDE_DIRS        The location of LMDB headers.
+
+find_path(LMDB_ROOT_DIR
+  NAMES include/lmdb.h
+  )
+
+find_library(LMDB_LIBRARIES
+  NAMES liblmdb.a liblmdb.so liblmdb.so.a liblmdb.dll.a # We want lmdb to be static, if possible
+  HINTS ${LMDB_ROOT_DIR}/lib
+  )
+
+add_library(lmdb UNKNOWN IMPORTED)
+set_target_properties(lmdb PROPERTIES
+    IMPORTED_LOCATION ${LMDB_LIBRARIES}
+    )
+
+find_path(LMDB_INCLUDE_DIRS
+  NAMES lmdb.h
+  HINTS ${LMDB_ROOT_DIR}/include
+  )
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LMDB DEFAULT_MSG
+  LMDB_LIBRARIES
+  LMDB_INCLUDE_DIRS
+  )
+
+mark_as_advanced(
+  LMDB_ROOT_DIR
+  LMDB_LIBRARIES
+  LMDB_INCLUDE_DIRS
+)

cmake/FindSignal.cmake

@@ -0,0 +1,15 @@
+find_path(Signal_INCLUDE_DIR NAMES signal/signal_protocol.h)
+find_library(Signal_LIBRARY signal-protocol-c)
+mark_as_advanced(Signal_INCLUDE_DIR Signal_LIBRARY)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Signal REQUIRED_VARS Signal_LIBRARY Signal_INCLUDE_DIR)
+
+if (Signal_FOUND AND NOT TARGET Signal::Signal)
+  add_library(Signal::Signal UNKNOWN IMPORTED)
+  set_target_properties(Signal::Signal PROPERTIES
+    IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+    IMPORTED_LOCATION "${Signal_LIBRARY}"
+    INTERFACE_INCLUDE_DIRECTORIES "${Signal_INCLUDE_DIR}"
+    )
+endif ()

cmake/MacOSXBundleInfo.plist.in

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+
+    <key>CFBundleDevelopmentRegion</key>
+    <string>English</string>
+    <key>CFBundleExecutable</key>
+    <string>${MACOSX_BUNDLE_EXECUTABLE_NAME}</string>
+    <key>CFBundleGetInfoString</key>
+    <string>${MACOSX_BUNDLE_INFO_STRING}</string>
+    <key>CFBundleIconFile</key>
+    <string>${MACOSX_BUNDLE_ICON_FILE}</string>
+    <key>CFBundleIdentifier</key>
+    <string>${MACOSX_BUNDLE_GUI_IDENTIFIER}</string>
+    <key>CFBundleInfoDictionaryVersion</key>
+    <string>6.0</string>
+    <key>CFBundleLongVersionString</key>
+    <string>${MACOSX_BUNDLE_LONG_VERSION_STRING}</string>
+    <key>CFBundleName</key>
+    <string>${MACOSX_BUNDLE_BUNDLE_NAME}</string>
+    <key>CFBundlePackageType</key>
+    <string>APPL</string>
+    <key>CFBundleShortVersionString</key>
+    <string>${MACOSX_BUNDLE_SHORT_VERSION_STRING}</string>
+    <key>CFBundleSignature</key>
+    <string>????</string>
+    <key>CFBundleVersion</key>
+    <string>${MACOSX_BUNDLE_BUNDLE_VERSION}</string>
+    <key>CSResourcesFileMapped</key>
+    <true/>
+    <key>NSHumanReadableCopyright</key>
+    <string>${MACOSX_BUNDLE_COPYRIGHT}</string>
+
+    <key>NSPrincipalClass</key>
+    <string>NSApplication</string>
+    <key>NSHighResolutionCapable</key>
+    <string>True</string>
+
+</dict>
+</plist>

core/CMakeLists.txt

@@ -1,44 +1,29 @@
-cmake_minimum_required(VERSION 3.0)
-project(squawkCORE)
+set(SIGNALCATCHER_SOURCE signalcatcher.cpp)
+if(WIN32)
+    set(SIGNALCATCHER_SOURCE signalcatcher_win32.cpp)
+endif(WIN32)
 
-set(CMAKE_AUTOMOC ON)
+target_sources(squawk PRIVATE
+  account.cpp
+  account.h
+  adapterfunctions.cpp
+  adapterfunctions.h
+  conference.cpp
+  conference.h
+  contact.cpp
+  contact.h
+  networkaccess.cpp
+  networkaccess.h
+  rosteritem.cpp
+  rosteritem.h
+  ${SIGNALCATCHER_SOURCE}
+  signalcatcher.h
+  squawk.cpp
+  squawk.h
+  )
 
-find_package(Qt5Core CONFIG REQUIRED)
-find_package(Qt5Gui CONFIG REQUIRED)
-find_package(Qt5Network CONFIG REQUIRED)
-find_package(Qt5Xml CONFIG REQUIRED)
-
-set(squawkCORE_SRC
-    squawk.cpp
-    account.cpp
-    archive.cpp
-    rosteritem.cpp
-    contact.cpp
-    conference.cpp
-    storage.cpp
-    networkaccess.cpp
-    adapterFuctions.cpp
-)
+target_include_directories(squawk PRIVATE ${LMDB_INCLUDE_DIRS})
 
+add_subdirectory(handlers)
+add_subdirectory(storage)
 add_subdirectory(passwordStorageEngines)
-
-# Tell CMake to create the helloworld executable
-add_library(squawkCORE ${squawkCORE_SRC})
-
-
-if(SYSTEM_QXMPP)
-    get_target_property(QXMPP_INTERFACE_INCLUDE_DIRECTORIES QXmpp::QXmpp INTERFACE_INCLUDE_DIRECTORIES)
-    target_include_directories(squawkCORE PUBLIC ${QXMPP_INTERFACE_INCLUDE_DIRECTORIES})
-endif()
-
-# Use the Widgets module from Qt 5.
-target_link_libraries(squawkCORE Qt5::Core)
-target_link_libraries(squawkCORE Qt5::Network)
-target_link_libraries(squawkCORE Qt5::Gui)
-target_link_libraries(squawkCORE Qt5::Xml)
-target_link_libraries(squawkCORE qxmpp)
-target_link_libraries(squawkCORE lmdb)
-target_link_libraries(squawkCORE simpleCrypt)
-if (WITH_KWALLET)
-    target_link_libraries(squawkCORE kwalletPSE)
-endif()

core/account.h

@@ -25,6 +25,7 @@
 #include <QMimeDatabase>
 #include <QStandardPaths>
 #include <QDir>
+#include <QTimer>
 
 #include <map>
 #include <set>
@@ -38,36 +39,44 @@
 #include <QXmppBookmarkManager.h>
 #include <QXmppBookmarkSet.h>
 #include <QXmppUploadRequestManager.h>
-#include <QXmppHttpUploadIq.h>
-#include <QXmppVCardIq.h>
 #include <QXmppVCardManager.h>
 #include <QXmppMessageReceiptManager.h>
 
-#include "shared.h"
+#include "shared/shared.h"
 #include "contact.h"
 #include "conference.h"
 #include "networkaccess.h"
 
+#include "handlers/messagehandler.h"
+#include "handlers/rosterhandler.h"
+#include "handlers/vcardhandler.h"
+
 namespace Core
 {
 
 class Account : public QObject
 {
     Q_OBJECT
+    friend class MessageHandler;
+    friend class RosterHandler;
+    friend class VCardHandler;
 public:
+    enum class Error {
+        authentication,
+        other,
+        none
+    };
+
     Account(
         const QString& p_login, 
         const QString& p_server, 
         const QString& p_password, 
         const QString& p_name, 
+        bool p_active,
         NetworkAccess* p_net, 
         QObject* parent = 0);
     ~Account();
     
-    void connect();
-    void disconnect();
-    void reconnect();
-    
     Shared::ConnectionState getState() const;
     QString getName() const;
     QString getLogin() const;
@@ -75,8 +84,12 @@ public:
     QString getPassword() const;
     QString getResource() const;
     QString getAvatarPath() const;
+    QString getBareJid() const;
+    QString getFullJid() const;
     Shared::Availability getAvailability() const;
     Shared::AccountPassword getPasswordType() const;
+    Error getLastError() const;
+    bool getActive() const;
     
     void setName(const QString& p_name);
     void setLogin(const QString& p_login);
@@ -85,11 +98,9 @@ public:
     void setResource(const QString& p_resource);
     void setAvailability(Shared::Availability avail);
     void setPasswordType(Shared::AccountPassword pt);
-    QString getFullJid() const;
-    void sendMessage(Shared::Message data);
-    void sendMessage(const Shared::Message& data, const QString& path);
+    void sendMessage(const Shared::Message& data);
+    void setActive(bool p_active);
     void requestArchive(const QString& jid, int count, const QString& before);
-    void setReconnectTimes(unsigned int times);
     void subscribeToContact(const QString& jid, const QString& reason);
     void unsubscribeFromContact(const QString& jid, const QString& reason);
     void removeContactRequest(const QString& jid);
@@ -97,14 +108,21 @@ public:
     void addContactToGroupRequest(const QString& jid, const QString& groupName);
     void removeContactFromGroupRequest(const QString& jid, const QString& groupName);
     void renameContactRequest(const QString& jid, const QString& newName);
+    void requestChangeMessage(const QString& jid, const QString& messageId, const QMap<QString, QVariant>& data);
     
     void setRoomJoined(const QString& jid, bool joined);
     void setRoomAutoJoin(const QString& jid, bool joined);
     void removeRoomRequest(const QString& jid);
     void addRoomRequest(const QString& jid, const QString& nick, const QString& password, bool autoJoin);
     void uploadVCard(const Shared::VCard& card);
+    void resendMessage(const QString& jid, const QString& id);
+    void replaceMessage(const QString& originalId, const Shared::Message& data);
+    void invalidatePassword();
     
 public slots:
+    void connect();
+    void disconnect();
+    void reconnect();
     void requestVCard(const QString& jid);
     
 signals:
@@ -124,23 +142,23 @@ signals:
     void removePresence(const QString& jid, const QString& name);
     void message(const Shared::Message& data);
     void changeMessage(const QString& jid, const QString& id, const QMap<QString, QVariant>& data);
-    void responseArchive(const QString& jid, const std::list<Shared::Message>& list);
+    void responseArchive(const QString& jid, const std::list<Shared::Message>& list, bool last);
     void error(const QString& text);
     void addRoomParticipant(const QString& jid, const QString& nickName, const QMap<QString, QVariant>& data);
     void changeRoomParticipant(const QString& jid, const QString& nickName, const QMap<QString, QVariant>& data);
     void removeRoomParticipant(const QString& jid, const QString& nickName);
     void receivedVCard(const QString& jid, const Shared::VCard& card);
     void uploadFile(const QFileInfo& file, const QUrl& set, const QUrl& get, QMap<QString, QString> headers);
-    void uploadFileError(const QString& messageId, const QString& error);
+    void uploadFileError(const QString& jid, const QString& messageId, const QString& error);
+    void needPassword();
     
 private:
     QString name;
-    std::map<QString, QString> achiveQueries;
+    std::map<QString, QString> archiveQueries;
     QXmppClient client;
     QXmppConfiguration config;
     QXmppPresence presence;
     Shared::ConnectionState state;
-    std::map<QString, std::set<QString>> groups;
     QXmppCarbonManager* cm;
     QXmppMamManager* am;
     QXmppMucManager* mm;
@@ -150,98 +168,40 @@ private:
     QXmppUploadRequestManager* um;
     QXmppDiscoveryManager* dm;
     QXmppMessageReceiptManager* rcpm;
-    std::map<QString, Contact*> contacts;
-    std::map<QString, Conference*> conferences;
-    unsigned int maxReconnectTimes;
-    unsigned int reconnectTimes;
+    bool reconnectScheduled;
+    QTimer* reconnectTimer;
     
-    std::map<QString, QString> queuedContacts;
-    std::set<QString> outOfRosterContacts;
-    std::set<QString> pendingVCardRequests;
-    std::map<QString, Shared::Message> pendingMessages;
-    std::deque<std::pair<QString, Shared::Message>> uploadingSlotsQueue;
-    
-    QString avatarHash;
-    QString avatarType;
-    bool ownVCardRequestInProgress;
     NetworkAccess* network;
-    std::map<QString, QString> pendingStateMessages;
     Shared::AccountPassword passwordType;
+    Error lastError;
+    bool pepSupport;
+    bool active;
+    bool notReadyPassword;
+    
+    MessageHandler* mh;
+    RosterHandler* rh;
+    VCardHandler* vh;
     
 private slots:
-    void onClientConnected();
-    void onClientDisconnected();
+    void onClientStateChange(QXmppClient::State state);
     void onClientError(QXmppClient::Error err);
     
-    void onRosterReceived();
-    void onRosterItemAdded(const QString& bareJid);
-    void onRosterItemChanged(const QString& bareJid);
-    void onRosterItemRemoved(const QString& bareJid);
-    void onRosterPresenceChanged(const QString& bareJid, const QString& resource);
-    
     void onPresenceReceived(const QXmppPresence& presence);
-    void onMessageReceived(const QXmppMessage& message);
-    
-    void onCarbonMessageReceived(const QXmppMessage& message);
-    void onCarbonMessageSent(const QXmppMessage& message);
-    
+    void onContactNeedHistory(const QString& before, const QString& after, const QDateTime& at);
+
     void onMamMessageReceived(const QString& bareJid, const QXmppMessage& message);
     void onMamResultsReceived(const QString &queryId, const QXmppResultSetReply &resultSetReply, bool complete);
-    
-    void onMucRoomAdded(QXmppMucRoom* room);
-    void onMucJoinedChanged(bool joined);
-    void onMucAutoJoinChanged(bool autoJoin);
-    void onMucNickNameChanged(const QString& nickName);
-    void onMucSubjectChanged(const QString& subject);
-    void onMucAddParticipant(const QString& nickName, const QMap<QString, QVariant>& data);
-    void onMucChangeParticipant(const QString& nickName, const QMap<QString, QVariant>& data);
-    void onMucRemoveParticipant(const QString& nickName);
-    
-    void bookmarksReceived(const QXmppBookmarkSet& bookmarks);
-    
-    void onContactGroupAdded(const QString& group);
-    void onContactGroupRemoved(const QString& group);
-    void onContactNameChanged(const QString& name);
-    void onContactSubscriptionStateChanged(Shared::SubscriptionState state);
-    void onContactHistoryResponse(const std::list<Shared::Message>& list);
-    void onContactNeedHistory(const QString& before, const QString& after, const QDateTime& at);
-    void onContactAvatarChanged(Shared::Avatar, const QString& path);
-    
+
     void onMamLog(QXmppLogger::MessageType type, const QString &msg);
-    
-    void onVCardReceived(const QXmppVCardIq& card);
-    void onOwnVCardReceived(const QXmppVCardIq& card);
-    
-    void onUploadSlotReceived(const QXmppHttpUploadSlotIq& slot);
-    void onUploadSlotRequestFailed(const QXmppHttpUploadRequestIq& request);
-    void onFileUploaded(const QString& messageId, const QString& url);
-    void onFileUploadError(const QString& messageId, const QString& errMsg);
+
     void onDiscoveryItemsReceived (const QXmppDiscoveryIq& items);
     void onDiscoveryInfoReceived (const QXmppDiscoveryIq& info);
-    
-    void onReceiptReceived(const QString& jid, const QString &id);
+    void onContactHistoryResponse(const std::list<Shared::Message>& list, bool last);
   
 private:
-    void addedAccount(const QString &bareJid);
-    void handleNewContact(Contact* contact);
-    void handleNewRosterItem(RosterItem* contact);
-    void handleNewConference(Conference* contact);
-    bool handleChatMessage(const QXmppMessage& msg, bool outgoing = false, bool forwarded = false, bool guessing = false);
-    bool handleGroupMessage(const QXmppMessage& msg, bool outgoing = false, bool forwarded = false, bool guessing = false);
-    void addNewRoom(const QString& jid, const QString& nick, const QString& roomName, bool autoJoin);
-    void addToGroup(const QString& jid, const QString& group);
-    void removeFromGroup(const QString& jid, const QString& group);
-    void initializeMessage(Shared::Message& target, const QXmppMessage& source, bool outgoing = false, bool forwarded = false, bool guessing = false) const;
-    Shared::SubscriptionState castSubscriptionState(QXmppRosterIq::Item::SubscriptionType qs) const;
-    void logMessage(const QXmppMessage& msg, const QString& reason = "Message wasn't handled: ");
-    void storeConferences();
-    void clearConferences();
-    void sendMessageWithLocalUploadedFile(Shared::Message msg, const QString& url);
-    RosterItem* getRosterItem(const QString& jid);
+    void handleDisconnection();
+    void onReconnectTimer();
 };
-
-void initializeVCard(Shared::VCard& vCard, const QXmppVCardIq& card);
-void initializeQXmppVCard(QXmppVCardIq& card, const Shared::VCard& vCard);
 }
 
 

core/adapterfunctions.cpp

@@ -1,5 +1,5 @@
 /*
- * Squawk messenger. 
+ * Squawk messenger.
  * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
  *
  * This program is free software: you can redistribute it and/or modify
@@ -15,10 +15,8 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef CORE_ADAPTER_FUNCTIONS_H
-#define CORE_ADAPTER_FUNCTIONS_H
 
-#include "account.h"
+#include "adapterfunctions.h"
 
 void Core::initializeVCard(Shared::VCard& vCard, const QXmppVCardIq& card)
 {
@@ -264,12 +262,10 @@ void Core::initializeQXmppVCard(QXmppVCardIq& iq, const Shared::VCard& card) {
             phone.setType(phone.type() | QXmppVCardPhone::Preferred);
         }
     }
-    for (const std::pair<QString, QXmppVCardPhone>& phone : phones) {
+    for (const std::pair<const QString, QXmppVCardPhone>& phone : phones) {
         phs.push_back(phone.second);
     }
     
     iq.setEmails(emails);
     iq.setPhones(phs);
 }
-
-#endif // CORE_ADAPTER_FUNCTIONS_H

core/adapterfunctions.h

@@ -0,0 +1,32 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef CORE_ADAPTER_FUNCTIONS_H
+#define CORE_ADAPTER_FUNCTIONS_H
+
+#include <QXmppVCardIq.h>
+#include <shared/vcard.h>
+
+namespace Core {
+
+void initializeVCard(Shared::VCard& vCard, const QXmppVCardIq& card);
+void initializeQXmppVCard(QXmppVCardIq& card, const Shared::VCard& vCard);
+
+}
+
+
+#endif // CORE_ADAPTER_FUNCTIONS_H

core/conference.cpp

@@ -356,7 +356,7 @@ Shared::VCard Core::Conference::handleResponseVCard(const QXmppVCardIq& card, co
 QMap<QString, QVariant> Core::Conference::getAllAvatars() const
 {
     QMap<QString, QVariant> result;
-    for (const std::pair<QString, Archive::AvatarInfo>& pair : exParticipants) {
+    for (const std::pair<const QString, Archive::AvatarInfo>& pair : exParticipants) {
         result.insert(pair.first, avatarPath(pair.first) + "." + pair.second.type);
     }
     return result;

core/handlers/CMakeLists.txt

@@ -0,0 +1,8 @@
+target_sources(squawk PRIVATE
+  messagehandler.cpp
+  messagehandler.h
+  rosterhandler.cpp
+  rosterhandler.h
+  vcardhandler.cpp
+  vcardhandler.h
+  )

core/handlers/messagehandler.cpp

@@ -0,0 +1,595 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "messagehandler.h"
+#include "core/account.h"
+
+Core::MessageHandler::MessageHandler(Core::Account* account):
+    QObject(),
+    acc(account),
+    pendingStateMessages(),
+    uploadingSlotsQueue()
+{
+}
+
+void Core::MessageHandler::onMessageReceived(const QXmppMessage& msg)
+{
+    bool handled = false;
+    switch (msg.type()) {
+        case QXmppMessage::Normal:
+            qDebug() << "received a message with type \"Normal\", not sure what to do with it now, skipping";
+            break;
+        case QXmppMessage::Chat:
+            handled = handleChatMessage(msg);
+            break;
+        case QXmppMessage::GroupChat:
+            handled = handleGroupMessage(msg);
+            break;
+        case QXmppMessage::Error: {
+            std::tuple<bool, QString, QString> ids = getOriginalPendingMessageId(msg.id());
+            if (std::get<0>(ids)) {
+                QString id = std::get<1>(ids);
+                QString jid = std::get<2>(ids);
+                RosterItem* cnt = acc->rh->getRosterItem(jid);
+                QMap<QString, QVariant> cData = {
+                    {"state", static_cast<uint>(Shared::Message::State::error)},
+                    {"errorText", msg.error().text()}
+                };
+                if (cnt != 0) {
+                    cnt->changeMessage(id, cData);
+                }
+                emit acc->changeMessage(jid, id, cData);
+                handled = true;
+            } else {
+                qDebug() << "received a message with type \"Error\", not sure what to do with it now, skipping";
+            }
+        }
+        break;
+        case QXmppMessage::Headline:
+            qDebug() << "received a message with type \"Headline\", not sure what to do with it now, skipping";
+            break;
+    }
+    if (!handled) {
+        logMessage(msg);
+    }
+}
+
+bool Core::MessageHandler::handleChatMessage(const QXmppMessage& msg, bool outgoing, bool forwarded, bool guessing)
+{
+    if (msg.body().size() != 0 || msg.outOfBandUrl().size() > 0) {
+        Shared::Message sMsg(Shared::Message::chat);
+        initializeMessage(sMsg, msg, outgoing, forwarded, guessing);
+        QString jid = sMsg.getPenPalJid();
+        Contact* cnt = acc->rh->getContact(jid);
+        if (cnt == 0) {
+            cnt = acc->rh->addOutOfRosterContact(jid);
+            qDebug() << "appending message" << sMsg.getId() << "to an out of roster contact";
+        }
+        if (outgoing) {
+            if (forwarded) {
+                sMsg.setState(Shared::Message::State::sent);
+            }
+        } else {
+            sMsg.setState(Shared::Message::State::delivered);
+        }
+        QString oId = msg.replaceId();
+        if (oId.size() > 0) {
+            QMap<QString, QVariant> cData = {
+                {"body", sMsg.getBody()},
+                {"stamp", sMsg.getTime()}
+            };
+            cnt->correctMessageInArchive(oId, sMsg);
+            emit acc->changeMessage(jid, oId, cData);
+        } else {
+            cnt->appendMessageToArchive(sMsg);
+            emit acc->message(sMsg);
+        }
+        
+        return true;
+    }
+    return false;
+}
+
+bool Core::MessageHandler::handleGroupMessage(const QXmppMessage& msg, bool outgoing, bool forwarded, bool guessing)
+{
+    const QString& body(msg.body());
+    if (body.size() != 0) {
+        
+        Shared::Message sMsg(Shared::Message::groupChat);
+        initializeMessage(sMsg, msg, outgoing, forwarded, guessing);
+        QString jid = sMsg.getPenPalJid();
+        Conference* cnt = acc->rh->getConference(jid);
+        if (cnt == 0) {
+            return false;
+        }
+        
+        std::tuple<bool, QString, QString> ids = getOriginalPendingMessageId(msg.id());
+        if (std::get<0>(ids)) {
+            QMap<QString, QVariant> cData = {{"state", static_cast<uint>(Shared::Message::State::delivered)}};
+            cnt->changeMessage(std::get<1>(ids), cData);
+            emit acc->changeMessage(std::get<2>(ids), std::get<1>(ids), cData);
+        } else {
+            QString oId = msg.replaceId();
+            if (oId.size() > 0) {
+                QMap<QString, QVariant> cData = {
+                    {"body", sMsg.getBody()},
+                    {"stamp", sMsg.getTime()}
+                };
+                cnt->correctMessageInArchive(oId, sMsg);
+                emit acc->changeMessage(jid, oId, cData);
+            } else {
+                cnt->appendMessageToArchive(sMsg);
+                QDateTime minAgo = QDateTime::currentDateTimeUtc().addSecs(-60);
+                if (sMsg.getTime() > minAgo) {     //otherwise it's considered a delayed delivery, most probably MUC history receipt
+                    emit acc->message(sMsg);
+                } else {
+                    //qDebug() << "Delayed delivery: ";
+                }
+            }
+        }
+        
+        return true;
+    } 
+    return false;
+}
+
+
+void Core::MessageHandler::initializeMessage(Shared::Message& target, const QXmppMessage& source, bool outgoing, bool forwarded, bool guessing) const
+{
+    const QDateTime& time(source.stamp());
+    QString id;
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 3, 0)
+    id = source.originId();
+    if (id.size() == 0) {
+        id = source.id();
+    }
+    target.setStanzaId(source.stanzaId());
+    qDebug() << "initializing message with originId:" << source.originId() << ", id:" << source.id() << ", stansaId:" << source.stanzaId();
+#else
+    id = source.id();
+#endif
+    target.setId(id);
+    QString messageId = target.getId();
+    if (messageId.size() == 0) {
+        target.generateRandomId();          //TODO out of desperation, I need at least a random ID
+        messageId = target.getId();
+        qDebug() << "Had do initialize a message with no id, assigning autogenerated" << messageId;
+    }
+    target.setFrom(source.from());
+    target.setTo(source.to());
+    target.setBody(source.body());
+    target.setForwarded(forwarded);
+    
+    if (guessing) {
+        if (target.getFromJid() == acc->getBareJid()) {
+            outgoing = true;
+        } else {
+            outgoing = false;
+        }
+    }
+    target.setOutgoing(outgoing);
+    if (time.isValid()) {
+        target.setTime(time);
+    } else {
+        target.setCurrentTime();
+    }
+    
+    QString oob = source.outOfBandUrl();
+    if (oob.size() > 0) {
+        target.setAttachPath(acc->network->addMessageAndCheckForPath(oob, acc->getName(), target.getPenPalJid(), messageId));
+    }
+    target.setOutOfBandUrl(oob);
+}
+
+void Core::MessageHandler::logMessage(const QXmppMessage& msg, const QString& reason)
+{
+    qDebug() << reason;
+    qDebug() << "- from: " << msg.from();
+    qDebug() << "- to: " << msg.to();
+    qDebug() << "- body: " << msg.body();
+    qDebug() << "- type: " << msg.type();
+    qDebug() << "- state: " << msg.state();
+    qDebug() << "- stamp: " << msg.stamp();
+    qDebug() << "- id: " << msg.id();
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 3, 0)
+    qDebug() << "- stanzaId: " << msg.stanzaId();
+#endif
+    qDebug() << "- outOfBandUrl: " << msg.outOfBandUrl();
+    qDebug() << "==============================";
+}
+
+void Core::MessageHandler::onCarbonMessageReceived(const QXmppMessage& msg)
+{
+    handleChatMessage(msg, false, true);
+}
+
+void Core::MessageHandler::onCarbonMessageSent(const QXmppMessage& msg)
+{
+    handleChatMessage(msg, true, true);
+}
+
+std::tuple<bool, QString, QString> Core::MessageHandler::getOriginalPendingMessageId(const QString& id)
+{
+    std::tuple<bool, QString, QString> result({false, "", ""});
+    std::map<QString, QString>::const_iterator itr = pendingStateMessages.find(id);
+    if (itr != pendingStateMessages.end()) {
+        std::get<0>(result) = true;
+        std::get<2>(result) = itr->second;
+
+        std::map<QString, QString>::const_iterator itrC = pendingCorrectionMessages.find(id);
+        if (itrC != pendingCorrectionMessages.end()) {
+            if (itrC->second.size() > 0) {
+                std::get<1>(result) = itrC->second;
+            } else {
+                std::get<1>(result) = itr->first;
+            }
+            pendingCorrectionMessages.erase(itrC);
+        } else {
+            std::get<1>(result) = itr->first;
+        }
+
+        pendingStateMessages.erase(itr);
+    }
+
+    return result;
+}
+
+void Core::MessageHandler::onReceiptReceived(const QString& jid, const QString& id)
+{
+    std::tuple<bool, QString, QString> ids = getOriginalPendingMessageId(id);
+    if (std::get<0>(ids)) {
+        QMap<QString, QVariant> cData = {{"state", static_cast<uint>(Shared::Message::State::delivered)}};
+        RosterItem* ri = acc->rh->getRosterItem(std::get<2>(ids));
+
+        if (ri != 0) {
+            ri->changeMessage(std::get<1>(ids), cData);
+        }
+        emit acc->changeMessage(std::get<2>(ids), std::get<1>(ids), cData);
+    }
+}
+
+void Core::MessageHandler::sendMessage(const Shared::Message& data, bool newMessage, QString originalId)
+{
+    if (data.getOutOfBandUrl().size() == 0 && data.getAttachPath().size() > 0) {
+        pendingCorrectionMessages.insert(std::make_pair(data.getId(), originalId));
+        prepareUpload(data, newMessage);
+    } else {
+        performSending(data, originalId, newMessage);
+    }
+}
+
+void Core::MessageHandler::performSending(Shared::Message data, const QString& originalId, bool newMessage)
+{
+    QString jid = data.getPenPalJid();
+    QString id = data.getId();
+    qDebug() << "Sending message with id:" << id;
+    if (originalId.size() > 0) {
+        qDebug() << "To replace one with id:" << originalId;
+    }
+    RosterItem* ri = acc->rh->getRosterItem(jid);
+    bool sent = false;
+    if (newMessage && originalId.size() > 0) {
+        newMessage = false;
+    }
+    QDateTime sendTime = QDateTime::currentDateTimeUtc();
+    if (acc->state == Shared::ConnectionState::connected) {
+        QXmppMessage msg(createPacket(data, sendTime, originalId));
+        
+        sent = acc->client.sendPacket(msg);
+        if (sent) {
+            data.setState(Shared::Message::State::sent);
+        } else {
+            data.setState(Shared::Message::State::error);
+            data.setErrorText("Couldn't send message: internal QXMPP library error, probably need to check out the logs");
+        }
+        
+    } else {
+        data.setState(Shared::Message::State::error);
+        data.setErrorText("You are is offline or reconnecting");
+    }
+    
+    QMap<QString, QVariant> changes(getChanges(data, sendTime, newMessage, originalId));
+    
+    QString realId;
+    if (originalId.size() > 0) {
+        realId = originalId;
+    } else {
+        realId = id;
+    }
+    if (ri != 0) {
+        if (newMessage) {
+            ri->appendMessageToArchive(data);
+        } else {
+            ri->changeMessage(realId, changes);
+        }
+        if (sent) {
+            pendingStateMessages.insert(std::make_pair(id, jid));
+            if (originalId.size() > 0) {
+                pendingCorrectionMessages.insert(std::make_pair(id, originalId));
+            }
+        } else {
+            pendingStateMessages.erase(id);
+            pendingCorrectionMessages.erase(id);
+        }
+    }
+    
+    emit acc->changeMessage(jid, realId, changes);
+}
+
+QMap<QString, QVariant> Core::MessageHandler::getChanges(Shared::Message& data, const QDateTime& time, bool newMessage, const QString& originalId) const
+{
+    QMap<QString, QVariant> changes;
+
+    QString oob = data.getOutOfBandUrl();
+    Shared::Message::State mstate = data.getState();
+    changes.insert("state", static_cast<uint>(mstate));
+    if (mstate == Shared::Message::State::error) {
+        changes.insert("errorText", data.getErrorText());
+    }
+    if (oob.size() > 0) {
+        changes.insert("outOfBandUrl", oob);
+    }
+    if (newMessage) {
+        data.setTime(time);
+    }
+    if (originalId.size() > 0) {
+        changes.insert("body", data.getBody());
+    }
+    changes.insert("stamp", time);
+
+    //sometimes (when the image is pasted with ctrl+v)
+    //I start sending message with one path, then copy it to downloads directory
+    //so, the final path changes. Let's assume it changes always since it costs me close to nothing
+    QString attachPath = data.getAttachPath();
+    if (attachPath.size() > 0) {
+        QString squawkified = Shared::squawkifyPath(attachPath);
+        changes.insert("attachPath", squawkified);
+        if (attachPath != squawkified) {
+            data.setAttachPath(squawkified);
+        }
+    }
+
+    return changes;
+}
+
+QXmppMessage Core::MessageHandler::createPacket(const Shared::Message& data, const QDateTime& time, const QString& originalId) const
+{
+    QXmppMessage msg(acc->getFullJid(), data.getTo(), data.getBody(), data.getThread());
+    QString id(data.getId());
+
+    if (originalId.size() > 0) {
+        msg.setReplaceId(originalId);
+    }
+
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 3, 0)
+    msg.setOriginId(id);
+#endif
+    msg.setId(id);
+    msg.setType(static_cast<QXmppMessage::Type>(data.getType()));       //it is safe here, my type is compatible
+    msg.setOutOfBandUrl(data.getOutOfBandUrl());
+    msg.setReceiptRequested(true);
+    msg.setStamp(time);
+
+    return msg;
+}
+
+void Core::MessageHandler::prepareUpload(const Shared::Message& data, bool newMessage)
+{
+    if (acc->state == Shared::ConnectionState::connected) {
+        QString jid = data.getPenPalJid();
+        QString id = data.getId();
+        RosterItem* ri = acc->rh->getRosterItem(jid);
+        if (!ri) {
+            qDebug() << "An attempt to initialize upload in" << acc->name << "for pal" << jid << "but the object for this pal wasn't found, something went terrebly wrong, skipping send";
+            return;
+        }
+        QString path = data.getAttachPath();
+        QString url = acc->network->getFileRemoteUrl(path);
+        if (url.size() != 0) {
+            sendMessageWithLocalUploadedFile(data, url, newMessage);
+        } else {
+            pendingStateMessages.insert(std::make_pair(id, jid));
+            if (newMessage) {
+                ri->appendMessageToArchive(data);
+            } else {
+                QMap<QString, QVariant> changes({
+                    {"state", (uint)Shared::Message::State::pending}
+                });
+                ri->changeMessage(id, changes);
+                emit acc->changeMessage(jid, id, changes);
+            }
+            //this checks if the file is already uploading, and if so it subscribes to it's success, so, i need to do stuff only if the network knows nothing of this file
+            if (!acc->network->checkAndAddToUploading(acc->getName(), jid, id, path)) {
+                if (acc->um->serviceFound()) {
+                    QFileInfo file(path);
+                    if (file.exists() && file.isReadable()) {
+                        pendingStateMessages.insert(std::make_pair(id, jid));
+                        uploadingSlotsQueue.emplace_back(path, id);
+                        if (uploadingSlotsQueue.size() == 1) {
+                            acc->um->requestUploadSlot(file);
+                        }
+                    } else {
+                        handleUploadError(jid, id, "Uploading file no longer exists or your system user has no permission to read it");
+                        qDebug() << "Requested upload slot in account" << acc->name << "for file" << path << "but the file doesn't exist or is not readable";
+                    }
+                } else {
+                    handleUploadError(jid, id, "Your server doesn't support file upload service, or it's prohibited for your account");
+                    qDebug() << "Requested upload slot in account" << acc->name << "for file" << path << "but upload manager didn't discover any upload services";
+                }
+            }
+        }
+    } else {
+        handleUploadError(data.getPenPalJid(), data.getId(), "Account is offline or reconnecting");
+        qDebug() << "An attempt to send message with not connected account " << acc->name << ", skipping";
+    }
+}
+
+void Core::MessageHandler::onUploadSlotReceived(const QXmppHttpUploadSlotIq& slot)
+{
+    if (uploadingSlotsQueue.size() == 0) {
+        qDebug() << "HTTP Upload manager of account" << acc->name << "reports about success requesting upload slot, but none was requested";
+    } else {
+        const std::pair<QString, QString>& pair = uploadingSlotsQueue.front();
+        const QString& mId = pair.second;
+        QString palJid = pendingStateMessages.at(mId);
+        acc->network->uploadFile({acc->name, palJid, mId}, pair.first, slot.putUrl(), slot.getUrl(), slot.putHeaders());
+        
+        uploadingSlotsQueue.pop_front();
+        if (uploadingSlotsQueue.size() > 0) {
+            acc->um->requestUploadSlot(uploadingSlotsQueue.front().first);
+        }
+    }
+}
+
+void Core::MessageHandler::onUploadSlotRequestFailed(const QXmppHttpUploadRequestIq& request)
+{
+    QString err(request.error().text());
+    if (uploadingSlotsQueue.size() == 0) {
+        qDebug() << "HTTP Upload manager of account" << acc->name << "reports about an error requesting upload slot, but none was requested";
+        qDebug() << err;
+    } else {
+        const std::pair<QString, QString>& pair = uploadingSlotsQueue.front();
+        qDebug() << "Error requesting upload slot for file" << pair.first << "in account" << acc->name << ":" << err;
+        handleUploadError(pendingStateMessages.at(pair.second), pair.second, err);
+        
+        uploadingSlotsQueue.pop_front();
+        if (uploadingSlotsQueue.size() > 0) {
+            acc->um->requestUploadSlot(uploadingSlotsQueue.front().first);
+        }
+    }
+}
+
+void Core::MessageHandler::onDownloadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& path)
+{
+    QMap<QString, QVariant> cData = {
+        {"attachPath", path}
+    };
+    for (const Shared::MessageInfo& info : msgs) {
+        if (info.account == acc->getName()) {
+            RosterItem* cnt = acc->rh->getRosterItem(info.jid);
+            if (cnt != 0) {
+                if (cnt->changeMessage(info.messageId, cData)) {
+                    emit acc->changeMessage(info.jid, info.messageId, cData);
+                }
+            }
+        }
+    }
+}
+
+void Core::MessageHandler::onLoadFileError(const std::list<Shared::MessageInfo>& msgs, const QString& text, bool up)
+{
+    if (up) {
+        for (const Shared::MessageInfo& info : msgs) {
+            if (info.account == acc->getName()) {
+                handleUploadError(info.jid, info.messageId, text);
+            }
+        }
+    }
+}
+
+void Core::MessageHandler::handleUploadError(const QString& jid, const QString& messageId, const QString& errorText)
+{
+    emit acc->uploadFileError(jid, messageId, "Error requesting slot to upload file: " + errorText);
+    pendingStateMessages.erase(messageId);
+    pendingCorrectionMessages.erase(messageId);
+    requestChangeMessage(jid, messageId, {
+        {"state", static_cast<uint>(Shared::Message::State::error)},
+        {"errorText", errorText}
+    });
+}
+
+void Core::MessageHandler::onUploadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path)
+{
+    for (const Shared::MessageInfo& info : msgs) {
+        if (info.account == acc->getName()) {
+            RosterItem* ri = acc->rh->getRosterItem(info.jid);
+            if (ri != 0) {
+                Shared::Message msg = ri->getMessage(info.messageId);
+                msg.setAttachPath(path);
+                sendMessageWithLocalUploadedFile(msg, url, false);
+            } else {
+                qDebug() << "A signal received about complete upload to" << acc->name << "for pal" << info.jid << "but the object for this pal wasn't found, something went terrebly wrong, skipping send";
+            }
+        }
+    }
+}
+
+void Core::MessageHandler::sendMessageWithLocalUploadedFile(Shared::Message msg, const QString& url, bool newMessage)
+{
+    msg.setOutOfBandUrl(url);
+    if (msg.getBody().size() == 0) {    //not sure why, but most messages do that
+        msg.setBody(url);               //they duplicate oob in body, some of them wouldn't even show an attachment if you don't do that
+    }                                   
+    performSending(msg, pendingCorrectionMessages.at(msg.getId()), newMessage);
+    //TODO removal/progress update
+}
+
+static const std::set<QString> allowedToChangeKeys({
+    "attachPath",
+    "outOfBandUrl",
+    "state",
+    "errorText"
+});
+
+void Core::MessageHandler::requestChangeMessage(const QString& jid, const QString& messageId, const QMap<QString, QVariant>& data)
+{
+    RosterItem* cnt = acc->rh->getRosterItem(jid);
+    if (cnt != 0) {
+        bool allSupported = true;
+        QString unsupportedString;
+        for (QMap<QString, QVariant>::const_iterator itr = data.begin(); itr != data.end(); ++itr) {    //I need all this madness
+            if (allowedToChangeKeys.count(itr.key()) != 1) {                                            //to not allow this method
+                allSupported = false;                                                                   //to make a message to look like if it was edited
+                unsupportedString = itr.key();                                                          //basically I needed to control who exaclty calls this method
+                break;                                                                                  //because the underlying tech assumes that
+            }                                                                                           //the change is initiated by user, not by system
+        }
+        if (allSupported) {
+            cnt->changeMessage(messageId, data);
+            emit acc->changeMessage(jid, messageId, data);
+        } else {
+            qDebug() << "A request to change message" << messageId << "of conversation" << jid << "with following data" << data;
+            qDebug() << "only limited set of dataFields are supported yet here, and" << unsupportedString << "isn't one of them, skipping";
+        }
+    }
+}
+
+void Core::MessageHandler::resendMessage(const QString& jid, const QString& id)
+{
+    RosterItem* cnt = acc->rh->getRosterItem(jid);
+    if (cnt != 0) {
+        try {
+            Shared::Message msg = cnt->getMessage(id);
+            if (msg.getState() == Shared::Message::State::error) {
+                if (msg.getEdited()){
+                    QString originalId = msg.getId();
+                    msg.generateRandomId();
+                    sendMessage(msg, false, originalId);
+                } else {
+                    sendMessage(msg, false);
+                }
+            } else {
+                qDebug() << "An attempt to resend a message to" << jid << "by account" << acc->getName() << ", but this message seems to have been normally sent, this method was made to retry sending failed to be sent messages, skipping";
+            }
+        } catch (const Archive::NotFound& err) {
+            qDebug() << "An attempt to resend a message to" << jid << "by account" << acc->getName() << ", but this message wasn't found in history, skipping";
+        }
+    } else {
+        qDebug() << "An attempt to resend a message to" << jid << "by account" << acc->getName() << ", but this jid isn't present in account roster, skipping";
+    }
+}

core/handlers/messagehandler.h

@@ -0,0 +1,86 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CORE_MESSAGEHANDLER_H
+#define CORE_MESSAGEHANDLER_H
+
+#include <QObject>
+
+#include <deque>
+#include <map>
+
+#include <QXmppMessage.h>
+#include <QXmppHttpUploadIq.h>
+
+#include <shared/message.h>
+#include <shared/messageinfo.h>
+#include <shared/pathcheck.h>
+
+namespace Core {
+
+/**
+ * @todo write docs
+ */
+
+class Account;
+
+class MessageHandler : public QObject
+{
+    Q_OBJECT
+public:
+    MessageHandler(Account* account);
+    
+public:
+    void sendMessage(const Shared::Message& data, bool newMessage = true, QString originalId = "");
+    void initializeMessage(Shared::Message& target, const QXmppMessage& source, bool outgoing = false, bool forwarded = false, bool guessing = false) const;
+    void resendMessage(const QString& jid, const QString& id);
+    
+public slots:
+    void onMessageReceived(const QXmppMessage& message);
+    void onCarbonMessageReceived(const QXmppMessage& message);
+    void onCarbonMessageSent(const QXmppMessage& message);
+    void onReceiptReceived(const QString& jid, const QString& id);    
+    void onUploadSlotReceived(const QXmppHttpUploadSlotIq& slot);
+    void onUploadSlotRequestFailed(const QXmppHttpUploadRequestIq& request);
+    void onDownloadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& path);
+    void onUploadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path);
+    void onLoadFileError(const std::list<Shared::MessageInfo>& msgs, const QString& path, bool up);
+    void requestChangeMessage(const QString& jid, const QString& messageId, const QMap<QString, QVariant>& data);
+    
+private:
+    bool handleChatMessage(const QXmppMessage& msg, bool outgoing = false, bool forwarded = false, bool guessing = false);
+    bool handleGroupMessage(const QXmppMessage& msg, bool outgoing = false, bool forwarded = false, bool guessing = false);
+    void logMessage(const QXmppMessage& msg, const QString& reason = "Message wasn't handled: ");
+    void sendMessageWithLocalUploadedFile(Shared::Message msg, const QString& url, bool newMessage = true);
+    void performSending(Shared::Message data, const QString& originalId, bool newMessage = true);
+    void prepareUpload(const Shared::Message& data, bool newMessage = true);
+    void handleUploadError(const QString& jid, const QString& messageId, const QString& errorText);
+    QXmppMessage createPacket(const Shared::Message& data, const QDateTime& time, const QString& originalId) const;
+    QMap<QString, QVariant> getChanges(Shared::Message& data, const QDateTime& time, bool newMessage, const QString& originalId) const;
+    std::tuple<bool, QString, QString> getOriginalPendingMessageId(const QString& id);
+    
+private:
+    Account* acc;
+    std::map<QString, QString> pendingStateMessages;        //key is message id, value is JID
+    std::map<QString, QString> pendingCorrectionMessages;   //key is new mesage, value is originalOne
+    std::deque<std::pair<QString, QString>> uploadingSlotsQueue;
+};
+
+}
+
+#endif // CORE_MESSAGEHANDLER_H

core/handlers/rosterhandler.cpp

@@ -0,0 +1,600 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "rosterhandler.h"
+#include "core/account.h"
+
+Core::RosterHandler::RosterHandler(Core::Account* account):
+    QObject(),
+    acc(account),
+    contacts(),
+    conferences(),
+    groups(),
+    queuedContacts(),
+    outOfRosterContacts(),
+    pepSupport(false)
+{
+    connect(acc->rm, &QXmppRosterManager::rosterReceived, this, &RosterHandler::onRosterReceived);
+    connect(acc->rm, &QXmppRosterManager::itemAdded, this, &RosterHandler::onRosterItemAdded);
+    connect(acc->rm, &QXmppRosterManager::itemRemoved, this, &RosterHandler::onRosterItemRemoved);
+    connect(acc->rm, &QXmppRosterManager::itemChanged, this, &RosterHandler::onRosterItemChanged);
+    
+    
+    connect(acc->mm, &QXmppMucManager::roomAdded, this, &RosterHandler::onMucRoomAdded);
+    connect(acc->bm, &QXmppBookmarkManager::bookmarksReceived, this, &RosterHandler::bookmarksReceived);
+}
+
+Core::RosterHandler::~RosterHandler()
+{
+    for (std::map<QString, Contact*>::const_iterator itr = contacts.begin(), end = contacts.end(); itr != end; ++itr) {
+        delete itr->second;
+    }
+    
+    for (std::map<QString, Conference*>::const_iterator itr = conferences.begin(), end = conferences.end(); itr != end; ++itr) {
+        delete itr->second;
+    }
+}
+
+void Core::RosterHandler::onRosterReceived()
+{
+    acc->requestVCard(acc->getBareJid());         //TODO need to make sure server actually supports vCards
+    
+    QStringList bj = acc->rm->getRosterBareJids();
+    for (int i = 0; i < bj.size(); ++i) {
+        const QString& jid = bj[i];
+        addedAccount(jid.toLower());
+    }
+}
+
+void Core::RosterHandler::onRosterItemAdded(const QString& bareJid)
+{
+    QString lcJid = bareJid.toLower();
+    addedAccount(lcJid);
+    std::map<QString, QString>::const_iterator itr = queuedContacts.find(lcJid);
+    if (itr != queuedContacts.end()) {
+        acc->rm->subscribe(lcJid, itr->second);
+        queuedContacts.erase(itr);
+    }
+}
+
+void Core::RosterHandler::addedAccount(const QString& jid)
+{
+    std::map<QString, Contact*>::const_iterator itr = contacts.find(jid);
+    QXmppRosterIq::Item re = acc->rm->getRosterEntry(jid);
+    Contact* contact;
+    bool newContact = false;
+    if (itr == contacts.end()) {
+        newContact = true;
+        contact = new Contact(jid, acc->name);
+        contacts.insert(std::make_pair(jid, contact));
+        
+    } else {
+        contact = itr->second;
+    }
+    
+    QSet<QString> gr = re.groups();
+    Shared::SubscriptionState state = castSubscriptionState(re.subscriptionType());
+    contact->setGroups(gr);
+    contact->setSubscriptionState(state);
+    contact->setName(re.name());
+    
+    if (newContact) {
+        QMap<QString, QVariant> cData({
+            {"name", re.name()},
+            {"state", QVariant::fromValue(state)}
+        });
+        
+        careAboutAvatar(contact, cData);
+        int grCount = 0;
+        for (QSet<QString>::const_iterator itr = gr.begin(), end = gr.end(); itr != end; ++itr) {
+            const QString& groupName = *itr;
+            addToGroup(jid, groupName);
+            emit acc->addContact(jid, groupName, cData);
+            grCount++;
+        }
+        
+        if (grCount == 0) {
+            emit acc->addContact(jid, "", cData);
+        }
+        handleNewContact(contact);
+    }
+}
+
+void Core::RosterHandler::addNewRoom(const QString& jid, const QString& nick, const QString& roomName, bool autoJoin)
+{
+    QXmppMucRoom* room = acc->mm->addRoom(jid);
+    QString lNick = nick;
+    if (lNick.size() == 0) {
+        lNick = acc->getName();
+    }
+    Conference* conf = new Conference(jid, acc->getName(), autoJoin, roomName, lNick, room);
+    conferences.insert(std::make_pair(jid, conf));
+    
+    handleNewConference(conf);
+    
+    QMap<QString, QVariant> cData = {
+        {"autoJoin", conf->getAutoJoin()},
+        {"joined", conf->getJoined()},
+        {"nick", conf->getNick()},
+        {"name", conf->getName()},
+        {"avatars", conf->getAllAvatars()}
+    };
+    careAboutAvatar(conf, cData);
+    emit acc->addRoom(jid, cData);
+}
+
+void Core::RosterHandler::careAboutAvatar(Core::RosterItem* item, QMap<QString, QVariant>& data)
+{
+    Archive::AvatarInfo info;
+    bool hasAvatar = item->readAvatarInfo(info);
+    if (hasAvatar) {
+        if (info.autogenerated) {
+            data.insert("avatarState", QVariant::fromValue(Shared::Avatar::autocreated));
+        } else {
+            data.insert("avatarState", QVariant::fromValue(Shared::Avatar::valid));
+        }
+        data.insert("avatarPath", item->avatarPath() + "." + info.type);
+    } else {
+        data.insert("avatarState", QVariant::fromValue(Shared::Avatar::empty));
+        data.insert("avatarPath", "");
+        acc->requestVCard(item->jid);
+    }
+}
+
+void Core::RosterHandler::addContactRequest(const QString& jid, const QString& name, const QSet<QString>& groups)
+{
+    if (acc->state == Shared::ConnectionState::connected) {
+        std::map<QString, QString>::const_iterator itr = queuedContacts.find(jid);
+        if (itr != queuedContacts.end()) {
+            qDebug() << "An attempt to add contact " << jid << " to account " << acc->name << " but the account is already queued for adding, skipping";
+        } else {
+            queuedContacts.insert(std::make_pair(jid, ""));     //TODO need to add reason here;
+            acc->rm->addItem(jid, name, groups);
+        }
+    } else {
+        qDebug() << "An attempt to add contact " << jid << " to account " << acc->name << " but the account is not in the connected state, skipping";
+    }
+}
+
+void Core::RosterHandler::removeContactRequest(const QString& jid)
+{
+    QString lcJid = jid.toLower();
+    if (acc->state == Shared::ConnectionState::connected) {
+        std::set<QString>::const_iterator itr = outOfRosterContacts.find(lcJid);
+        if (itr != outOfRosterContacts.end()) {
+            outOfRosterContacts.erase(itr);
+            onRosterItemRemoved(lcJid);
+        } else {
+            acc->rm->removeItem(lcJid);
+        }
+    } else {
+        qDebug() << "An attempt to remove contact " << lcJid << " from account " << acc->name << " but the account is not in the connected state, skipping";
+    }
+}
+
+void Core::RosterHandler::handleNewRosterItem(Core::RosterItem* contact)
+{
+    connect(contact, &RosterItem::needHistory, this->acc, &Account::onContactNeedHistory);
+    connect(contact, &RosterItem::historyResponse, this->acc, &Account::onContactHistoryResponse);
+    connect(contact, &RosterItem::nameChanged, this, &RosterHandler::onContactNameChanged);
+    connect(contact, &RosterItem::avatarChanged, this, &RosterHandler::onContactAvatarChanged);
+    connect(contact, &RosterItem::requestVCard, this->acc, &Account::requestVCard);
+}
+
+void Core::RosterHandler::handleNewContact(Core::Contact* contact)
+{
+    handleNewRosterItem(contact);
+    connect(contact, &Contact::groupAdded, this, &RosterHandler::onContactGroupAdded);
+    connect(contact, &Contact::groupRemoved, this, &RosterHandler::onContactGroupRemoved);
+    connect(contact, &Contact::subscriptionStateChanged, this, &RosterHandler::onContactSubscriptionStateChanged);
+}
+
+void Core::RosterHandler::handleNewConference(Core::Conference* contact)
+{
+    handleNewRosterItem(contact);
+    connect(contact, &Conference::nickChanged, this, &RosterHandler::onMucNickNameChanged);
+    connect(contact, &Conference::subjectChanged, this, &RosterHandler::onMucSubjectChanged);
+    connect(contact, &Conference::joinedChanged, this, &RosterHandler::onMucJoinedChanged);
+    connect(contact, &Conference::autoJoinChanged, this, &RosterHandler::onMucAutoJoinChanged);
+    connect(contact, &Conference::addParticipant, this, &RosterHandler::onMucAddParticipant);
+    connect(contact, &Conference::changeParticipant, this, &RosterHandler::onMucChangeParticipant);
+    connect(contact, &Conference::removeParticipant, this, &RosterHandler::onMucRemoveParticipant);
+}
+
+void Core::RosterHandler::onMucAddParticipant(const QString& nickName, const QMap<QString, QVariant>& data)
+{
+    Conference* room = static_cast<Conference*>(sender());
+    emit acc->addRoomParticipant(room->jid, nickName, data);
+}
+
+void Core::RosterHandler::onMucChangeParticipant(const QString& nickName, const QMap<QString, QVariant>& data)
+{
+    Conference* room = static_cast<Conference*>(sender());
+    emit acc->changeRoomParticipant(room->jid, nickName, data);
+}
+
+void Core::RosterHandler::onMucRemoveParticipant(const QString& nickName)
+{
+    Conference* room = static_cast<Conference*>(sender());
+    emit acc->removeRoomParticipant(room->jid, nickName);
+}
+
+void Core::RosterHandler::onMucSubjectChanged(const QString& subject)
+{
+    Conference* room = static_cast<Conference*>(sender());
+    emit acc->changeRoom(room->jid, {
+        {"subject", subject}
+    });
+}
+
+void Core::RosterHandler::onContactGroupAdded(const QString& group)
+{
+    Contact* contact = static_cast<Contact*>(sender());
+    if (contact->groupsCount() == 1) {
+        // not sure i need to handle it here, the situation with grouped and ungrouped contacts handled on the client anyway
+    }
+    
+    QMap<QString, QVariant> cData({
+        {"name", contact->getName()},
+        {"state", QVariant::fromValue(contact->getSubscriptionState())}
+    });
+    addToGroup(contact->jid, group);
+    emit acc->addContact(contact->jid, group, cData);
+}
+
+void Core::RosterHandler::onContactGroupRemoved(const QString& group)
+{
+    Contact* contact = static_cast<Contact*>(sender());
+    if (contact->groupsCount() == 0) {
+        // not sure i need to handle it here, the situation with grouped and ungrouped contacts handled on the client anyway
+    }
+    
+    emit acc->removeContact(contact->jid, group);
+    removeFromGroup(contact->jid, group);
+}
+
+void Core::RosterHandler::onContactNameChanged(const QString& cname)
+{
+    Contact* contact = static_cast<Contact*>(sender());
+    QMap<QString, QVariant> cData({
+        {"name", cname},
+    });
+    emit acc->changeContact(contact->jid, cData);
+}
+
+void Core::RosterHandler::onContactSubscriptionStateChanged(Shared::SubscriptionState cstate)
+{
+    Contact* contact = static_cast<Contact*>(sender());
+    QMap<QString, QVariant> cData({
+        {"state", QVariant::fromValue(cstate)},
+    });
+    emit acc->changeContact(contact->jid, cData);
+}
+
+void Core::RosterHandler::addToGroup(const QString& jid, const QString& group)
+{
+    std::map<QString, std::set<QString>>::iterator gItr = groups.find(group);
+    if (gItr == groups.end()) {
+        gItr = groups.insert(std::make_pair(group, std::set<QString>())).first;
+        emit acc->addGroup(group);
+    }
+    gItr->second.insert(jid.toLower());
+}
+
+void Core::RosterHandler::removeFromGroup(const QString& jid, const QString& group)
+{
+    QSet<QString> toRemove;
+    std::map<QString, std::set<QString>>::iterator itr = groups.find(group);
+    if (itr == groups.end()) {
+        qDebug() << "An attempt to remove contact" << jid << "of account" << acc->name << "from non existing group" << group << ", skipping";
+        return;
+    }
+    std::set<QString> contacts = itr->second;
+    std::set<QString>::const_iterator cItr = contacts.find(jid.toLower());
+    if (cItr != contacts.end()) {
+        contacts.erase(cItr);
+        if (contacts.size() == 0) {
+            emit acc->removeGroup(group);
+            groups.erase(group);
+        }
+    }
+}
+
+Core::RosterItem * Core::RosterHandler::getRosterItem(const QString& jid)
+{
+    RosterItem* item = 0;
+    QString lcJid = jid.toLower();
+    std::map<QString, Contact*>::const_iterator citr = contacts.find(lcJid);
+    if (citr != contacts.end()) {
+        item = citr->second;
+    } else {
+        std::map<QString, Conference*>::const_iterator coitr = conferences.find(lcJid);
+        if (coitr != conferences.end()) {
+            item = coitr->second;
+        }
+    }
+    return item;
+}
+
+Core::Conference * Core::RosterHandler::getConference(const QString& jid)
+{
+    Conference* item = 0;
+    std::map<QString, Conference*>::const_iterator coitr = conferences.find(jid.toLower());
+    if (coitr != conferences.end()) {
+        item = coitr->second;
+    }
+    return item;
+}
+
+Core::Contact * Core::RosterHandler::getContact(const QString& jid)
+{
+    Contact* item = 0;
+    std::map<QString, Contact*>::const_iterator citr = contacts.find(jid.toLower());
+    if (citr != contacts.end()) {
+        item = citr->second;
+    }
+    return item;
+}
+
+Core::Contact * Core::RosterHandler::addOutOfRosterContact(const QString& jid)
+{
+    QString lcJid = jid.toLower();
+    Contact* cnt = new Contact(lcJid, acc->name);
+    contacts.insert(std::make_pair(lcJid, cnt));
+    outOfRosterContacts.insert(lcJid);
+    cnt->setSubscriptionState(Shared::SubscriptionState::unknown);
+    emit acc->addContact(lcJid, "", QMap<QString, QVariant>({
+        {"state", QVariant::fromValue(Shared::SubscriptionState::unknown)}
+    }));
+    handleNewContact(cnt);
+    return cnt;
+}
+
+void Core::RosterHandler::onRosterItemChanged(const QString& bareJid)
+{
+    QString lcJid = bareJid.toLower();
+    std::map<QString, Contact*>::const_iterator itr = contacts.find(lcJid);
+    if (itr == contacts.end()) {
+        qDebug() << "An attempt to change non existing contact" << lcJid << "from account" << acc->name << ", skipping";
+        return;
+    }
+    Contact* contact = itr->second;
+    QXmppRosterIq::Item re = acc->rm->getRosterEntry(lcJid);
+    
+    Shared::SubscriptionState state = castSubscriptionState(re.subscriptionType());
+    
+    contact->setGroups(re.groups());
+    contact->setSubscriptionState(state);
+    contact->setName(re.name());
+}
+
+void Core::RosterHandler::onRosterItemRemoved(const QString& bareJid)
+{
+    QString lcJid = bareJid.toLower();
+    std::map<QString, Contact*>::const_iterator itr = contacts.find(lcJid);
+    if (itr == contacts.end()) {
+        qDebug() << "An attempt to remove non existing contact" << lcJid << "from account" << acc->name << ", skipping";
+        return;
+    }
+    Contact* contact = itr->second;
+    contacts.erase(itr);
+    QSet<QString> cGroups = contact->getGroups();
+    for (QSet<QString>::const_iterator itr = cGroups.begin(), end = cGroups.end(); itr != end; ++itr) {
+        removeFromGroup(lcJid, *itr);
+    }
+    emit acc->removeContact(lcJid);
+    
+    contact->deleteLater();
+}
+
+void Core::RosterHandler::onMucRoomAdded(QXmppMucRoom* room)
+{
+    qDebug()    << "room" << room->jid() << "added with name" << room->name() 
+                << ", account" << acc->getName() << "joined:" << room->isJoined(); 
+}
+
+void Core::RosterHandler::bookmarksReceived(const QXmppBookmarkSet& bookmarks)
+{
+    QList<QXmppBookmarkConference> confs = bookmarks.conferences();
+    for (QList<QXmppBookmarkConference>::const_iterator itr = confs.begin(), end = confs.end(); itr != end; ++itr) {
+        const QXmppBookmarkConference& c = *itr;
+        
+        QString jid = c.jid().toLower();
+        std::map<QString, Conference*>::const_iterator cItr = conferences.find(jid);
+        if (cItr == conferences.end()) {
+            addNewRoom(jid, c.nickName(), c.name(), c.autoJoin());
+        } else {
+            if (c.autoJoin()) {
+                cItr->second->setJoined(true);
+            } else {
+                cItr->second->setAutoJoin(false);
+            }
+        }
+    }
+}
+
+void Core::RosterHandler::onMucJoinedChanged(bool joined)
+{
+    Conference* room = static_cast<Conference*>(sender());
+    emit acc->changeRoom(room->jid, {
+        {"joined", joined}
+    });
+}
+
+void Core::RosterHandler::onMucAutoJoinChanged(bool autoJoin)
+{
+    storeConferences();
+    Conference* room = static_cast<Conference*>(sender());
+    emit acc->changeRoom(room->jid, {
+        {"autoJoin", autoJoin}
+    });
+}
+
+void Core::RosterHandler::onMucNickNameChanged(const QString& nickName)
+{
+    storeConferences();
+    Conference* room = static_cast<Conference*>(sender());
+    emit acc->changeRoom(room->jid, {
+        {"nick", nickName}
+    });
+}
+
+Shared::SubscriptionState Core::RosterHandler::castSubscriptionState(QXmppRosterIq::Item::SubscriptionType qs)
+{
+    Shared::SubscriptionState state;
+    if (qs == QXmppRosterIq::Item::NotSet) {
+        state = Shared::SubscriptionState::unknown;
+    } else {
+        state = static_cast<Shared::SubscriptionState>(qs);
+    }
+    return state;
+}
+
+void Core::RosterHandler::storeConferences()
+{
+    QXmppBookmarkSet bms = acc->bm->bookmarks();
+    QList<QXmppBookmarkConference> confs;
+    for (std::map<QString, Conference*>::const_iterator itr = conferences.begin(), end = conferences.end(); itr != end; ++itr) {
+        Conference* conference = itr->second;
+        QXmppBookmarkConference conf;
+        conf.setJid(conference->jid);
+        conf.setName(conference->getName());
+        conf.setNickName(conference->getNick());
+        conf.setAutoJoin(conference->getAutoJoin());
+        confs.push_back(conf);
+    }
+    bms.setConferences(confs);
+    acc->bm->setBookmarks(bms);
+}
+
+void Core::RosterHandler::clearConferences()
+{
+    for (std::map<QString, Conference*>::const_iterator itr = conferences.begin(), end = conferences.end(); itr != end; itr++) {
+        itr->second->deleteLater();
+        emit acc->removeRoom(itr->first);
+    }
+    conferences.clear();
+}
+
+void Core::RosterHandler::removeRoomRequest(const QString& jid)
+{
+    QString lcJid = jid.toLower();
+    std::map<QString, Conference*>::const_iterator itr = conferences.find(lcJid);
+    if (itr == conferences.end()) {
+        qDebug() << "An attempt to remove non existing room" << lcJid << "from account" << acc->name << ", skipping";
+    }
+    itr->second->deleteLater();
+    conferences.erase(itr);
+    emit acc->removeRoom(lcJid);
+    storeConferences();
+}
+
+void Core::RosterHandler::addRoomRequest(const QString& jid, const QString& nick, const QString& password, bool autoJoin)
+{
+    QString lcJid = jid.toLower();
+    std::map<QString, Conference*>::const_iterator cItr = conferences.find(lcJid);
+    if (cItr == conferences.end()) {
+        addNewRoom(lcJid, nick, "", autoJoin);
+        storeConferences();
+    } else {
+        qDebug() << "An attempt to add a MUC " << lcJid << " which is already present in the rester, skipping";
+    }
+}
+
+void Core::RosterHandler::addContactToGroupRequest(const QString& jid, const QString& groupName)
+{
+    QString lcJid = jid.toLower();
+    std::map<QString, Contact*>::const_iterator itr = contacts.find(lcJid);
+    if (itr == contacts.end()) {
+        qDebug()    << "An attempt to add non existing contact" << lcJid << "of account" 
+                    << acc->name << "to the group" << groupName << ", skipping";
+    } else {
+        QXmppRosterIq::Item item = acc->rm->getRosterEntry(lcJid);
+        QSet<QString> groups = item.groups();
+        if (groups.find(groupName) == groups.end()) {           //TODO need to change it, I guess that sort of code is better in qxmpp lib
+            groups.insert(groupName);
+            item.setGroups(groups);
+            
+            QXmppRosterIq iq;
+            iq.setType(QXmppIq::Set);
+            iq.addItem(item);
+            acc->client.sendPacket(iq);
+        } else {
+            qDebug()    << "An attempt to add contact" << jid << "of account" 
+                        << acc->name << "to the group" << groupName << "but it's already in that group, skipping";
+        }
+    }
+}
+
+void Core::RosterHandler::removeContactFromGroupRequest(const QString& jid, const QString& groupName)
+{
+    QString lcJid = jid.toLower();
+    std::map<QString, Contact*>::const_iterator itr = contacts.find(lcJid);
+    if (itr == contacts.end()) {
+        qDebug()    << "An attempt to remove non existing contact" << lcJid << "of account" 
+                    << acc->name << "from the group" << groupName << ", skipping";
+    } else {
+        QXmppRosterIq::Item item = acc->rm->getRosterEntry(lcJid);
+        QSet<QString> groups = item.groups();
+        QSet<QString>::const_iterator gItr = groups.find(groupName);
+        if (gItr != groups.end()) {
+            groups.erase(gItr);
+            item.setGroups(groups);
+            
+            QXmppRosterIq iq;
+            iq.setType(QXmppIq::Set);
+            iq.addItem(item);
+            acc->client.sendPacket(iq);
+        } else {
+            qDebug()    << "An attempt to remove contact" << lcJid << "of account" 
+                        << acc->name << "from the group" << groupName << "but it's not in that group, skipping";
+        }
+    }
+}
+
+void Core::RosterHandler::onContactAvatarChanged(Shared::Avatar type, const QString& path)
+{
+    RosterItem* item = static_cast<RosterItem*>(sender());
+    QMap<QString, QVariant> cData({
+        {"avatarState", static_cast<uint>(type)},
+        {"avatarPath", path}
+    });
+    
+    emit acc->changeContact(item->jid, cData);
+}
+
+void Core::RosterHandler::handleOffline()
+{
+    for (const std::pair<const QString, Conference*>& pair : conferences) {
+        pair.second->clearArchiveRequests();
+        pair.second->downgradeDatabaseState();
+    }
+    for (const std::pair<const QString, Contact*>& pair : contacts) {
+        pair.second->clearArchiveRequests();
+        pair.second->downgradeDatabaseState();
+    }
+    setPepSupport(false);
+}
+
+
+void Core::RosterHandler::setPepSupport(bool support)
+{
+    if (pepSupport != support) {
+        pepSupport = support;
+    }
+}

core/handlers/rosterhandler.h

@@ -0,0 +1,116 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CORE_ROSTERHANDLER_H
+#define CORE_ROSTERHANDLER_H
+
+#include <QObject>
+#include <QSet>
+#include <QString>
+#include <QDateTime>
+
+#include <list>
+#include <map>
+#include <set>
+
+#include <QXmppBookmarkSet.h>
+#include <QXmppMucManager.h>
+#include <QXmppRosterIq.h>
+
+#include <shared/message.h>
+#include <core/contact.h>
+#include <core/conference.h>
+
+namespace Core {
+
+    
+class Account;
+    
+class RosterHandler : public QObject
+{
+    Q_OBJECT
+public:
+    RosterHandler(Account* account);
+    ~RosterHandler();
+    
+    void addContactRequest(const QString& jid, const QString& name, const QSet<QString>& groups);
+    void removeContactRequest(const QString& jid);
+    void addContactToGroupRequest(const QString& jid, const QString& groupName);
+    void removeContactFromGroupRequest(const QString& jid, const QString& groupName);
+    
+    void removeRoomRequest(const QString& jid);
+    void addRoomRequest(const QString& jid, const QString& nick, const QString& password, bool autoJoin);
+    void handleOffline();
+    
+    Core::Contact* getContact(const QString& jid);
+    Core::Conference* getConference(const QString& jid);
+    Core::RosterItem* getRosterItem(const QString& jid);
+    Core::Contact* addOutOfRosterContact(const QString& jid);
+    
+    void storeConferences();
+    void clearConferences();
+    void setPepSupport(bool support);
+    
+private slots:
+    void onRosterReceived();
+    void onRosterItemAdded(const QString& bareJid);
+    void onRosterItemChanged(const QString& bareJid);
+    void onRosterItemRemoved(const QString& bareJid);
+    
+    void onMucRoomAdded(QXmppMucRoom* room);
+    void onMucJoinedChanged(bool joined);
+    void onMucAutoJoinChanged(bool autoJoin);
+    void onMucNickNameChanged(const QString& nickName);
+    void onMucSubjectChanged(const QString& subject);
+    void onMucAddParticipant(const QString& nickName, const QMap<QString, QVariant>& data);
+    void onMucChangeParticipant(const QString& nickName, const QMap<QString, QVariant>& data);
+    void onMucRemoveParticipant(const QString& nickName);
+    
+    void bookmarksReceived(const QXmppBookmarkSet& bookmarks);
+    
+    void onContactGroupAdded(const QString& group);
+    void onContactGroupRemoved(const QString& group);
+    void onContactNameChanged(const QString& name);
+    void onContactSubscriptionStateChanged(Shared::SubscriptionState state);
+    void onContactAvatarChanged(Shared::Avatar, const QString& path);
+    
+private:
+    void addNewRoom(const QString& jid, const QString& nick, const QString& roomName, bool autoJoin);
+    void addToGroup(const QString& jid, const QString& group);
+    void removeFromGroup(const QString& jid, const QString& group);
+    void addedAccount(const QString &bareJid);
+    void handleNewRosterItem(Core::RosterItem* contact);
+    void handleNewContact(Core::Contact* contact);
+    void handleNewConference(Core::Conference* contact);
+    void careAboutAvatar(Core::RosterItem* item, QMap<QString, QVariant>& data);
+    
+    static Shared::SubscriptionState castSubscriptionState(QXmppRosterIq::Item::SubscriptionType qs);
+    
+private:
+    Account* acc;
+    std::map<QString, Contact*> contacts;
+    std::map<QString, Conference*> conferences;
+    std::map<QString, std::set<QString>> groups;
+    std::map<QString, QString> queuedContacts;
+    std::set<QString> outOfRosterContacts;
+    bool pepSupport;
+};
+
+}
+
+#endif // CORE_ROSTERHANDLER_H

core/handlers/vcardhandler.cpp

@@ -0,0 +1,312 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "vcardhandler.h"
+#include "core/account.h"
+
+Core::VCardHandler::VCardHandler(Account* account):
+    QObject(),
+    acc(account),
+    ownVCardRequestInProgress(false),
+    pendingVCardRequests(),
+    avatarHash(),
+    avatarType()
+{
+    connect(acc->vm, &QXmppVCardManager::vCardReceived, this, &VCardHandler::onVCardReceived);
+    //for some reason it doesn't work, launching from common handler
+    //connect(acc->vm, &QXmppVCardManager::clientVCardReceived, this, &VCardHandler::onOwnVCardReceived);
+
+    QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
+    path += "/" + acc->name;
+    QDir dir(path);
+
+    if (!dir.exists()) {
+        bool res = dir.mkpath(path);
+        if (!res) {
+            qDebug() << "Couldn't create a cache directory for account" << acc->name;
+            throw 22;
+        }
+    }
+
+    QFile* avatar = new QFile(path + "/avatar.png");
+    QString type = "png";
+    if (!avatar->exists()) {
+        delete avatar;
+        avatar = new QFile(path + "/avatar.jpg");
+        type = "jpg";
+        if (!avatar->exists()) {
+            delete avatar;
+            avatar = new QFile(path + "/avatar.jpeg");
+            type = "jpeg";
+            if (!avatar->exists()) {
+                delete avatar;
+                avatar = new QFile(path + "/avatar.gif");
+                type = "gif";
+            }
+        }
+    }
+
+    if (avatar->exists()) {
+        if (avatar->open(QFile::ReadOnly)) {
+            QCryptographicHash sha1(QCryptographicHash::Sha1);
+            sha1.addData(avatar);
+            avatarHash = sha1.result();
+            avatarType = type;
+        }
+    }
+    if (avatarType.size() != 0) {
+        acc->presence.setVCardUpdateType(QXmppPresence::VCardUpdateValidPhoto);
+        acc->presence.setPhotoHash(avatarHash.toUtf8());
+    } else {
+        acc->presence.setVCardUpdateType(QXmppPresence::VCardUpdateNotReady);
+    }
+}
+
+Core::VCardHandler::~VCardHandler()
+{
+
+}
+
+void Core::VCardHandler::onVCardReceived(const QXmppVCardIq& card)
+{
+    QString id = card.from();
+    QStringList comps = id.split("/");
+    QString jid = comps.front().toLower();
+    QString resource("");
+    if (comps.size() > 1) {
+        resource = comps.back();
+    }
+    pendingVCardRequests.erase(id);
+    RosterItem* item = acc->rh->getRosterItem(jid);
+
+    if (item == 0) {
+        if (jid == acc->getBareJid()) {
+            onOwnVCardReceived(card);
+        } else {
+            qDebug() << "received vCard" << jid << "doesn't belong to any of known contacts or conferences, skipping";
+        }
+        return;
+    }
+
+    Shared::VCard vCard = item->handleResponseVCard(card, resource);
+
+    emit acc->receivedVCard(jid, vCard);
+}
+
+void Core::VCardHandler::onOwnVCardReceived(const QXmppVCardIq& card)
+{
+    QByteArray ava = card.photo();
+    bool avaChanged = false;
+    QString path = QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/" + acc->name + "/";
+    if (ava.size() > 0) {
+        QCryptographicHash sha1(QCryptographicHash::Sha1);
+        sha1.addData(ava);
+        QString newHash(sha1.result());
+        QMimeDatabase db;
+        QMimeType newType = db.mimeTypeForData(ava);
+        if (avatarType.size() > 0) {
+            if (avatarHash != newHash) {
+                QString oldPath = path + "avatar." + avatarType;
+                QFile oldAvatar(oldPath);
+                bool oldToRemove = false;
+                if (oldAvatar.exists()) {
+                    if (oldAvatar.rename(oldPath + ".bak")) {
+                        oldToRemove = true;
+                    } else {
+                        qDebug() << "Received new avatar for account" << acc->name << "but can't get rid of the old one, doing nothing";
+                    }
+                }
+                QFile newAvatar(path + "avatar." + newType.preferredSuffix());
+                if (newAvatar.open(QFile::WriteOnly)) {
+                    newAvatar.write(ava);
+                    newAvatar.close();
+                    avatarHash = newHash;
+                    avatarType = newType.preferredSuffix();
+                    avaChanged = true;
+                } else {
+                    qDebug() << "Received new avatar for account" << acc->name << "but can't save it";
+                    if (oldToRemove) {
+                        qDebug() << "rolling back to the old avatar";
+                        if (!oldAvatar.rename(oldPath)) {
+                            qDebug() << "Couldn't roll back to the old avatar in account" << acc->name;
+                        }
+                    }
+                }
+            }
+        } else {
+            QFile newAvatar(path + "avatar." + newType.preferredSuffix());
+            if (newAvatar.open(QFile::WriteOnly)) {
+                newAvatar.write(ava);
+                newAvatar.close();
+                avatarHash = newHash;
+                avatarType = newType.preferredSuffix();
+                avaChanged = true;
+            } else {
+                qDebug() << "Received new avatar for account" << acc->name << "but can't save it";
+            }
+        }
+    } else {
+        if (avatarType.size() > 0) {
+            QFile oldAvatar(path + "avatar." + avatarType);
+            if (!oldAvatar.remove()) {
+                qDebug() << "Received vCard for account" << acc->name << "without avatar, but can't get rid of the file, doing nothing";
+            } else {
+                avatarType = "";
+                avatarHash = "";
+                avaChanged = true;
+            }
+        }
+    }
+
+    if (avaChanged) {
+        QMap<QString, QVariant> change;
+        if (avatarType.size() > 0) {
+            acc->presence.setPhotoHash(avatarHash.toUtf8());
+            acc->presence.setVCardUpdateType(QXmppPresence::VCardUpdateValidPhoto);
+            change.insert("avatarPath", path + "avatar." + avatarType);
+        } else {
+            acc->presence.setPhotoHash("");
+            acc->presence.setVCardUpdateType(QXmppPresence::VCardUpdateNoPhoto);
+            change.insert("avatarPath", "");
+        }
+        acc->client.setClientPresence(acc->presence);
+        emit acc->changed(change);
+    }
+
+    ownVCardRequestInProgress = false;
+
+    Shared::VCard vCard;
+    initializeVCard(vCard, card);
+
+    if (avatarType.size() > 0) {
+        vCard.setAvatarType(Shared::Avatar::valid);
+        vCard.setAvatarPath(path + "avatar." + avatarType);
+    } else {
+        vCard.setAvatarType(Shared::Avatar::empty);
+    }
+
+    emit acc->receivedVCard(acc->getBareJid(), vCard);
+}
+
+void Core::VCardHandler::handleOffline()
+{
+    pendingVCardRequests.clear();
+    Shared::VCard vCard;                    //just to show, that there is now more pending request
+    for (const QString& jid : pendingVCardRequests) {
+        emit acc->receivedVCard(jid, vCard);     //need to show it better in the future, like with an error
+    }
+    pendingVCardRequests.clear();
+    ownVCardRequestInProgress = false;
+}
+
+void Core::VCardHandler::requestVCard(const QString& jid)
+{
+    if (pendingVCardRequests.find(jid) == pendingVCardRequests.end()) {
+        qDebug() << "requesting vCard" << jid;
+        if (jid == acc->getBareJid()) {
+            if (!ownVCardRequestInProgress) {
+                acc->vm->requestClientVCard();
+                ownVCardRequestInProgress = true;
+            }
+        } else {
+            acc->vm->requestVCard(jid);
+            pendingVCardRequests.insert(jid);
+        }
+    }
+}
+
+void Core::VCardHandler::handleOtherPresenceOfMyAccountChange(const QXmppPresence& p_presence)
+{
+    if (!ownVCardRequestInProgress) {
+        switch (p_presence.vCardUpdateType()) {
+            case QXmppPresence::VCardUpdateNone:            //this presence has nothing to do with photo
+                break;
+            case QXmppPresence::VCardUpdateNotReady:        //let's say the photo didn't change here
+                break;
+            case QXmppPresence::VCardUpdateNoPhoto:         //there is no photo, need to drop if any
+                if (avatarType.size() > 0) {
+                    acc->vm->requestClientVCard();
+                    ownVCardRequestInProgress = true;
+                }
+                break;
+            case QXmppPresence::VCardUpdateValidPhoto:      //there is a photo, need to load
+                if (avatarHash != p_presence.photoHash()) {
+                    acc->vm->requestClientVCard();
+                    ownVCardRequestInProgress = true;
+                }
+                break;
+        }
+    }
+}
+
+void Core::VCardHandler::uploadVCard(const Shared::VCard& card)
+{
+    QXmppVCardIq iq;
+    initializeQXmppVCard(iq, card);
+
+    if (card.getAvatarType() != Shared::Avatar::empty) {
+        QString newPath = card.getAvatarPath();
+        QString oldPath = getAvatarPath();
+        QByteArray data;
+        QString type;
+        if (newPath != oldPath) {
+            QFile avatar(newPath);
+            if (!avatar.open(QFile::ReadOnly)) {
+                qDebug() << "An attempt to upload new vCard to account" << acc->name
+                << "but it wasn't possible to read file" << newPath
+                << "which was supposed to be new avatar, uploading old avatar";
+                if (avatarType.size() > 0) {
+                    QFile oA(oldPath);
+                    if (!oA.open(QFile::ReadOnly)) {
+                        qDebug() << "Couldn't read old avatar of account" << acc->name << ", uploading empty avatar";
+                    } else {
+                        data = oA.readAll();
+                    }
+                }
+            } else {
+                data = avatar.readAll();
+            }
+        } else {
+            if (avatarType.size() > 0) {
+                QFile oA(oldPath);
+                if (!oA.open(QFile::ReadOnly)) {
+                    qDebug() << "Couldn't read old avatar of account" << acc->name << ", uploading empty avatar";
+                } else {
+                    data = oA.readAll();
+                }
+            }
+        }
+
+        if (data.size() > 0) {
+            QMimeDatabase db;
+            type = db.mimeTypeForData(data).name();
+            iq.setPhoto(data);
+            iq.setPhotoType(type);
+        }
+    }
+
+    acc->vm->setClientVCard(iq);
+    onOwnVCardReceived(iq);
+}
+
+QString Core::VCardHandler::getAvatarPath() const
+{
+    if (avatarType.size() == 0) {
+        return "";
+    } else {
+        return QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/" + acc->name + "/" + "avatar." + avatarType;
+    }
+}

core/handlers/vcardhandler.h

@@ -0,0 +1,65 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef CORE_VCARDHANDLER_H
+#define CORE_VCARDHANDLER_H
+
+#include <set>
+
+#include <QXmppVCardIq.h>
+#include <QXmppPresence.h>
+
+#include <QObject>
+
+#include <shared/vcard.h>
+#include <core/adapterfunctions.h>
+
+/**
+ * @todo write docs
+ */
+
+namespace Core {
+
+class Account;
+
+class VCardHandler : public QObject
+{
+    Q_OBJECT
+public:
+    VCardHandler(Account* account);
+    ~VCardHandler();
+
+    void handleOffline();
+    void requestVCard(const QString& jid);
+    void handleOtherPresenceOfMyAccountChange(const QXmppPresence& p_presence);
+    void uploadVCard(const Shared::VCard& card);
+    QString getAvatarPath() const;
+
+private slots:
+    void onVCardReceived(const QXmppVCardIq& card);
+    void onOwnVCardReceived(const QXmppVCardIq& card);
+
+private:
+    Account* acc;
+
+    bool ownVCardRequestInProgress;
+    std::set<QString> pendingVCardRequests;
+    QString avatarHash;
+    QString avatarType;
+};
+}
+
+#endif // CORE_VCARDHANDLER_H

core/networkaccess.cpp

@@ -16,16 +16,23 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+
+#include <QtWidgets/QApplication>
+#include <QtCore/QDir>
+
 #include "networkaccess.h"
 
 Core::NetworkAccess::NetworkAccess(QObject* parent):
     QObject(parent),
     running(false),
     manager(0),
-    files("files"),
+    storage("fileURLStorage"),
     downloads(),
-    uploads()
+    uploads(),
+    currentPath()
 {
+    QSettings settings;
+    currentPath = settings.value("downloadsPath").toString();
 }
 
 Core::NetworkAccess::~NetworkAccess()
@@ -33,60 +40,31 @@ Core::NetworkAccess::~NetworkAccess()
     stop();
 }
 
-void Core::NetworkAccess::fileLocalPathRequest(const QString& messageId, const QString& url)
+void Core::NetworkAccess::downladFile(const QString& url)
 {
     std::map<QString, Transfer*>::iterator itr = downloads.find(url);
     if (itr != downloads.end()) {
-        Transfer* dwn = itr->second;
-        std::set<QString>::const_iterator mItr = dwn->messages.find(messageId);
-        if (mItr == dwn->messages.end()) {
-            dwn->messages.insert(messageId);
-        }
-        emit downloadFileProgress(messageId, dwn->progress);
+        qDebug() << "NetworkAccess received a request to download a file" << url << ", but the file is currently downloading, skipping";
     } else {
         try {
-            QString path = files.getRecord(url);
-            QFileInfo info(path);
-            if (info.exists() && info.isFile()) {
-                emit fileLocalPathResponse(messageId, path);
+            std::pair<QString, std::list<Shared::MessageInfo>> p = storage.getPath(url);
+            if (p.first.size() > 0) {
+                QFileInfo info(p.first);
+                if (info.exists() && info.isFile()) {
+                    emit downloadFileComplete(p.second, p.first);
+                } else {
+                    startDownload(p.second, url);
+                }
             } else {
-                files.removeRecord(url);
-                emit fileLocalPathResponse(messageId, "");
+                startDownload(p.second, url);
             }
         } catch (const Archive::NotFound& e) {
-            emit fileLocalPathResponse(messageId, "");
+            qDebug() << "NetworkAccess received a request to download a file" << url << ", but there is now record of which message uses that file, downloading anyway";
+            storage.addFile(url);
+            startDownload(std::list<Shared::MessageInfo>(), url);
         } catch (const Archive::Unknown& e) {
             qDebug() << "Error requesting file path:" << e.what();
-            emit fileLocalPathResponse(messageId, "");
-        }
-    }
-}
-
-void Core::NetworkAccess::downladFileRequest(const QString& messageId, const QString& url)
-{
-    std::map<QString, Transfer*>::iterator itr = downloads.find(url);
-    if (itr != downloads.end()) {
-        Transfer* dwn = itr->second;
-        std::set<QString>::const_iterator mItr = dwn->messages.find(messageId);
-        if (mItr == dwn->messages.end()) {
-            dwn->messages.insert(messageId);
-        }
-        emit downloadFileProgress(messageId, dwn->progress);
-    } else {
-        try {
-            QString path = files.getRecord(url);
-            QFileInfo info(path);
-            if (info.exists() && info.isFile()) {
-                emit fileLocalPathResponse(messageId, path);
-            } else {
-                files.removeRecord(url);
-                startDownload(messageId, url);
-            }
-        } catch (const Archive::NotFound& e) {
-            startDownload(messageId, url);
-        } catch (const Archive::Unknown& e) {
-            qDebug() << "Error requesting file path:" << e.what();
-            emit downloadFileError(messageId, QString("Database error: ") + e.what());
+            emit loadFileError(std::list<Shared::MessageInfo>(), QString("Database error: ") + e.what(), false);
         }
     }
 }
@@ -95,7 +73,10 @@ void Core::NetworkAccess::start()
 {
     if (!running) {
         manager = new QNetworkAccessManager();
-        files.open();
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+        manager->setTransferTimeout();
+#endif
+        storage.open();
         running = true;
     }
 }
@@ -103,7 +84,7 @@ void Core::NetworkAccess::start()
 void Core::NetworkAccess::stop()
 {
     if (running) {
-        files.close();
+        storage.close();
         manager->deleteLater();
         manager = 0;
         running = false;
@@ -124,35 +105,56 @@ void Core::NetworkAccess::onDownloadProgress(qint64 bytesReceived, qint64 bytesT
         qDebug() << "an error downloading" << url << ": the request had some progress but seems like no one is waiting for it, skipping";
     } else {
         Transfer* dwn = itr->second;
-        qreal received = bytesReceived;
-        qreal total = bytesTotal;
-        qreal progress = received/total;
-        dwn->progress = progress;
-        for (std::set<QString>::const_iterator mItr = dwn->messages.begin(), end = dwn->messages.end(); mItr != end; ++mItr) {
-            emit downloadFileProgress(*mItr, progress);
+        if (dwn->success) {
+            qreal received = bytesReceived;
+            qreal total = bytesTotal;
+            qreal progress = received/total;
+            dwn->progress = progress;
+            emit loadFileProgress(dwn->messages, progress, false);
         }
     }
 }
 
 void Core::NetworkAccess::onDownloadError(QNetworkReply::NetworkError code)
 {
+    qDebug() << "DEBUG: DOWNLOAD ERROR";
     QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
+    qDebug() << rpl->errorString();
     QString url = rpl->url().toString();
     std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
     if (itr == downloads.end()) {
         qDebug() << "an error downloading" << url << ": the request is reporting an error but seems like no one is waiting for it, skipping";
     } else {
         QString errorText = getErrorText(code);
-        if (errorText.size() > 0) {
+        //if (errorText.size() > 0) {
             itr->second->success = false;
             Transfer* dwn = itr->second;
-            for (std::set<QString>::const_iterator mItr = dwn->messages.begin(), end = dwn->messages.end(); mItr != end; ++mItr) {
-                emit downloadFileError(*mItr, errorText);
-            }
-        }
+            emit loadFileError(dwn->messages, errorText, false);
+        //}
     }
 }
 
+void Core::NetworkAccess::onDownloadSSLError(const QList<QSslError>& errors)
+{
+    qDebug() << "DEBUG: DOWNLOAD SSL ERRORS";
+    for (const QSslError& err : errors) {
+        qDebug() << err.errorString();
+    }
+    QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
+    QString url = rpl->url().toString();
+    std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
+    if (itr == downloads.end()) {
+        qDebug() << "an SSL error downloading" << url << ": the request is reporting an error but seems like no one is waiting for it, skipping";
+    } else {
+        //if (errorText.size() > 0) {
+        itr->second->success = false;
+        Transfer* dwn = itr->second;
+        emit loadFileError(dwn->messages, "SSL errors occured", false);
+        //}
+    }
+}
+
+
 QString Core::NetworkAccess::getErrorText(QNetworkReply::NetworkError code)
 {
     QString errorText("");
@@ -175,7 +177,11 @@ QString Core::NetworkAccess::getErrorText(QNetworkReply::NetworkError code)
             errorText = "Connection was closed because it timed out";
             break;
         case QNetworkReply::OperationCanceledError:
-            //this means I closed it myself by abort() or close(), don't think I need to notify here
+            //this means I closed it myself by abort() or close()
+            //I don't call them directory, but this is the error code
+            //Qt returns when it can not resume donwload after the network failure
+            //or when the download is canceled by the timout; 
+            errorText = "Connection lost";
             break;
         case QNetworkReply::SslHandshakeFailedError:
             errorText = "Security error";           //TODO need to handle sslErrors signal to get a better description here
@@ -276,68 +282,71 @@ QString Core::NetworkAccess::getErrorText(QNetworkReply::NetworkError code)
 
 void Core::NetworkAccess::onDownloadFinished()
 {
-    QString path("");
+    qDebug() << "DEBUG: DOWNLOAD FINISHED";
     QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
     QString url = rpl->url().toString();
     std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
     if (itr == downloads.end()) {
-        qDebug() << "an error downloading" << url << ": the request is done but seems like noone is waiting for it, skipping";
+        qDebug() << "an error downloading" << url << ": the request is done but there is no record of it being downloaded, ignoring";
     } else {
         Transfer* dwn = itr->second;
         if (dwn->success) {
             qDebug() << "download success for" << url;
+            QString err;
             QStringList hops = url.split("/");
             QString fileName = hops.back();
-            QStringList parts = fileName.split(".");
-            path = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation) + "/";
-            QString suffix("");
-            QStringList::const_iterator sItr = parts.begin();
-            QString realName = *sItr;
-            ++sItr;
-            for (QStringList::const_iterator sEnd = parts.end(); sItr != sEnd; ++sItr) {
-                suffix += "." + (*sItr);
+            QString jid;
+            if (dwn->messages.size() > 0) {
+                jid = dwn->messages.front().jid;
+            } else {
+                qDebug() << "An attempt to save the file but it doesn't seem to belong to any message, download is definately going to be broken";
             }
-            QString postfix("");
-            QFileInfo proposedName(path + realName + postfix + suffix);
-            int counter = 0;
-            while (proposedName.exists()) {
-                postfix = QString("(") + std::to_string(++counter).c_str() + ")";
-                proposedName = QFileInfo(path + realName + postfix + suffix);
+            QString path = prepareDirectory(jid);
+            if (path.size() > 0) {
+                path = checkFileName(fileName, path);
+                
+                QFile file(Shared::resolvePath(path));
+                if (file.open(QIODevice::WriteOnly)) {
+                    file.write(dwn->reply->readAll());
+                    file.close();
+                    storage.setPath(url, path);
+                    qDebug() << "file" << path << "was successfully downloaded";
+                } else {
+                    qDebug() << "couldn't save file" << path;
+                    err = "Error opening file to write:" + file.errorString();
+                }
+            } else {
+                err = "Couldn't prepare a directory for file";
             }
             
-            path = proposedName.absoluteFilePath();
-            QFile file(path);
-            if (file.open(QIODevice::WriteOnly)) {
-                file.write(dwn->reply->readAll());
-                file.close();
-                files.addRecord(url, path);
-                qDebug() << "file" << path << "was successfully downloaded";
+            if (path.size() > 0) {
+                emit downloadFileComplete(dwn->messages, path);
             } else {
-                qDebug() << "couldn't save file" << path;
-                path = "";
+                emit loadFileError(dwn->messages, "Error saving file " + url + "; " + err, false);
             }
         }
         
-        for (std::set<QString>::const_iterator mItr = dwn->messages.begin(), end = dwn->messages.end(); mItr != end; ++mItr) {
-            emit fileLocalPathResponse(*mItr, path);
-        }
-        
         dwn->reply->deleteLater();
         delete dwn;
         downloads.erase(itr);
     }
 }
 
-void Core::NetworkAccess::startDownload(const QString& messageId, const QString& url)
+void Core::NetworkAccess::startDownload(const std::list<Shared::MessageInfo>& msgs, const QString& url)
 {
-    Transfer* dwn = new Transfer({{messageId}, 0, 0, true, "", url, 0});
+    Transfer* dwn = new Transfer({msgs, 0, 0, true, "", url, 0});
     QNetworkRequest req(url);
     dwn->reply = manager->get(req);
     connect(dwn->reply, &QNetworkReply::downloadProgress, this, &NetworkAccess::onDownloadProgress);
+    connect(dwn->reply, &QNetworkReply::sslErrors, this, &NetworkAccess::onDownloadSSLError);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+    connect(dwn->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::errorOccurred), this, &NetworkAccess::onDownloadError);
+#else
     connect(dwn->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::error), this, &NetworkAccess::onDownloadError);
+#endif
     connect(dwn->reply, &QNetworkReply::finished, this, &NetworkAccess::onDownloadFinished);
     downloads.insert(std::make_pair(url, dwn));
-    emit downloadFileProgress(messageId, 0);
+    emit loadFileProgress(dwn->messages, 0, false);
 }
 
 void Core::NetworkAccess::onUploadError(QNetworkReply::NetworkError code)
@@ -346,16 +355,16 @@ void Core::NetworkAccess::onUploadError(QNetworkReply::NetworkError code)
     QString url = rpl->url().toString();
     std::map<QString, Transfer*>::const_iterator itr = uploads.find(url);
     if (itr == uploads.end()) {
-        qDebug() << "an error uploading" << url << ": the request is reporting an error but seems like noone is waiting for it, skipping";
+        qDebug() << "an error uploading" << url << ": the request is reporting an error but there is no record of it being uploading, ignoring";
     } else {
         QString errorText = getErrorText(code);
-        if (errorText.size() > 0) {
+        //if (errorText.size() > 0) {
             itr->second->success = false;
             Transfer* upl = itr->second;
-            for (std::set<QString>::const_iterator mItr = upl->messages.begin(), end = upl->messages.end(); mItr != end; ++mItr) {
-                emit uploadFileError(*mItr, errorText);
-            }
-        }
+            emit loadFileError(upl->messages, errorText, true);
+        //}
+        
+        //TODO deletion?
     }
 }
 
@@ -365,17 +374,39 @@ void Core::NetworkAccess::onUploadFinished()
     QString url = rpl->url().toString();
     std::map<QString, Transfer*>::const_iterator itr = uploads.find(url);
     if (itr == downloads.end()) {
-        qDebug() << "an error uploading" << url << ": the request is done but seems like no one is waiting for it, skipping";
+        qDebug() << "an error uploading" << url << ": the request is done there is no record of it being uploading, ignoring";
     } else {
         Transfer* upl = itr->second;
         if (upl->success) {
             qDebug() << "upload success for" << url;
-            files.addRecord(upl->url, upl->path);
-        
-            for (std::set<QString>::const_iterator mItr = upl->messages.begin(), end = upl->messages.end(); mItr != end; ++mItr) {
-                emit fileLocalPathResponse(*mItr, upl->path);
-                emit uploadFileComplete(*mItr, upl->url);
+
+            // Copy file to Download folder if it is a temp file. See Conversation::onImagePasted.
+            if (upl->path.startsWith(QDir::tempPath() + QDir::separator() + QStringLiteral("squawk_img_attach_")) && upl->path.endsWith(".png")) {
+                QString err = "";
+                QString downloadDirPath = prepareDirectory(upl->messages.front().jid);
+                if (downloadDirPath.size() > 0) {
+                    QString newPath = downloadDirPath + QDir::separator() + upl->path.mid(QDir::tempPath().length() + 1);
+
+                    // Copy {TEMPDIR}/squawk_img_attach_XXXXXX.png to Download folder
+                    bool copyResult = QFile::copy(upl->path, Shared::resolvePath(newPath));
+
+                    if (copyResult) {
+                        // Change storage
+                        upl->path = newPath;
+                    } else {
+                        err = "copying to " + newPath + " failed";
+                    }
+                } else {
+                    err = "Couldn't prepare a directory for file";
+                }
+
+                if (err.size() != 0) {
+                    qDebug() << "failed to copy temporary upload file " << upl->path << " to download folder:" << err;
+                }
             }
+
+            storage.addFile(upl->messages, upl->url, upl->path);
+            emit uploadFileComplete(upl->messages, upl->url, upl->path);
         }
         
         upl->reply->deleteLater();
@@ -395,93 +426,35 @@ void Core::NetworkAccess::onUploadProgress(qint64 bytesReceived, qint64 bytesTot
         qDebug() << "an error downloading" << url << ": the request had some progress but seems like no one is waiting for it, skipping";
     } else {
         Transfer* upl = itr->second;
-        qreal received = bytesReceived;
-        qreal total = bytesTotal;
-        qreal progress = received/total;
-        upl->progress = progress;
-        for (std::set<QString>::const_iterator mItr = upl->messages.begin(), end = upl->messages.end(); mItr != end; ++mItr) {
-            emit uploadFileProgress(*mItr, progress);
-        }
-    }
-}
-
-void Core::NetworkAccess::startUpload(const QString& messageId, const QString& url, const QString& path)
-{
-    Transfer* upl = new Transfer({{messageId}, 0, 0, true, path, url, 0});
-    QNetworkRequest req(url);
-    QFile* file = new QFile(path);
-    if (file->open(QIODevice::ReadOnly)) {
-        upl->reply = manager->put(req, file);
-        
-        connect(upl->reply, &QNetworkReply::uploadProgress, this, &NetworkAccess::onUploadProgress);
-        connect(upl->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::error), this, &NetworkAccess::onUploadError);
-        connect(upl->reply, &QNetworkReply::finished, this, &NetworkAccess::onUploadFinished);
-        uploads.insert(std::make_pair(url, upl));
-        emit downloadFileProgress(messageId, 0);
-    } else {
-        qDebug() << "couldn't upload file" << path;
-        emit uploadFileError(messageId, "Error opening file");
-        delete file;
-    }
-}
-
-void Core::NetworkAccess::uploadFileRequest(const QString& messageId, const QString& url, const QString& path)
-{
-    std::map<QString, Transfer*>::iterator itr = uploads.find(url);
-    if (itr != uploads.end()) {
-        Transfer* upl = itr->second;
-        std::set<QString>::const_iterator mItr = upl->messages.find(messageId);
-        if (mItr == upl->messages.end()) {
-            upl->messages.insert(messageId);
-        }
-        emit uploadFileProgress(messageId, upl->progress);
-    } else {
-        try {
-            QString ePath = files.getRecord(url);
-            if (ePath == path) {
-                QFileInfo info(path);
-                if (info.exists() && info.isFile()) {
-                    emit fileLocalPathResponse(messageId, path);
-                } else {
-                    files.removeRecord(url);
-                    startUpload(messageId, url, path);
-                }
-            } else {
-                QFileInfo info(path);
-                if (info.exists() && info.isFile()) {
-                    files.changeRecord(url, path);
-                    emit fileLocalPathResponse(messageId, path);
-                } else {
-                    files.removeRecord(url);
-                    startUpload(messageId, url, path);
-                }
-            }
-        } catch (const Archive::NotFound& e) {
-            startUpload(messageId, url, path);
-        } catch (const Archive::Unknown& e) {
-            qDebug() << "Error requesting file path on upload:" << e.what();
-            emit uploadFileError(messageId, QString("Database error: ") + e.what());
+        if (upl->success) {
+            qreal received = bytesReceived;
+            qreal total = bytesTotal;
+            qreal progress = received/total;
+            upl->progress = progress;
+            emit loadFileProgress(upl->messages, progress, true);
         }
     }
 }
 
 QString Core::NetworkAccess::getFileRemoteUrl(const QString& path)
 {
-    return "";  //TODO this is a way not to upload some file more then 1 time, here I'm supposed to return that file GET url
+    QString p = Shared::squawkifyPath(path);
+    
+    try {
+        p = storage.getUrl(p);
+    } catch (const Archive::NotFound& err) {
+        p = "";
+    } catch (...) {
+        throw;
+    }
+    
+    return p;
 }
 
-bool Core::NetworkAccess::isUploading(const QString& path, const QString& messageId)
-{
-    return false; //TODO this is a way to avoid parallel uploading of the same files by different chats
-                    //   message is is supposed to be added to the uploading messageids list 
-                    //   the result should be true if there was an uploading file with this path
-                    //   message id can be empty, then it's just to check and not to add
-}
-
-void Core::NetworkAccess::uploadFile(const QString& messageId, const QString& path, const QUrl& put, const QUrl& get, const QMap<QString, QString> headers)
+void Core::NetworkAccess::uploadFile(const Shared::MessageInfo& info, const QString& path, const QUrl& put, const QUrl& get, const QMap<QString, QString> headers)
 {
     QFile* file = new QFile(path);
-    Transfer* upl = new Transfer({{messageId}, 0, 0, true, path, get.toString(), file});
+    Transfer* upl = new Transfer({{info}, 0, 0, true, path, get.toString(), file});
     QNetworkRequest req(put);
     for (QMap<QString, QString>::const_iterator itr = headers.begin(), end = headers.end(); itr != end; itr++) {
         req.setRawHeader(itr.key().toUtf8(), itr.value().toUtf8());
@@ -490,13 +463,127 @@ void Core::NetworkAccess::uploadFile(const QString& messageId, const QString& pa
         upl->reply = manager->put(req, file);
         
         connect(upl->reply, &QNetworkReply::uploadProgress, this, &NetworkAccess::onUploadProgress);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+        connect(upl->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::errorOccurred), this, &NetworkAccess::onUploadError);
+#else
         connect(upl->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::error), this, &NetworkAccess::onUploadError);
+#endif
         connect(upl->reply, &QNetworkReply::finished, this, &NetworkAccess::onUploadFinished);
         uploads.insert(std::make_pair(put.toString(), upl));
-        emit downloadFileProgress(messageId, 0);
+        emit loadFileProgress(upl->messages, 0, true);
     } else {
         qDebug() << "couldn't upload file" << path;
-        emit uploadFileError(messageId, "Error opening file");
+        emit loadFileError(upl->messages, "Error opening file", true);
         delete file;
+        delete upl;
     }
 }
+
+void Core::NetworkAccess::registerFile(const QString& url, const QString& account, const QString& jid, const QString& id)
+{
+    storage.addFile(url, account, jid, id);
+    std::map<QString, Transfer*>::iterator itr = downloads.find(url);
+    if (itr != downloads.end()) {
+        itr->second->messages.emplace_back(account, jid, id);   //TODO notification is going to happen the next tick, is that okay?
+    }
+}
+
+void Core::NetworkAccess::registerFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id)
+{
+    storage.addFile(url, path, account, jid, id);
+}
+
+bool Core::NetworkAccess::checkAndAddToUploading(const QString& acc, const QString& jid, const QString id, const QString path)
+{
+    for (const std::pair<const QString, Transfer*>& pair : uploads) {
+        Transfer* info = pair.second;
+        if (pair.second->path == path) {
+            std::list<Shared::MessageInfo>& messages = info->messages;
+            bool dup = false;
+            for (const Shared::MessageInfo& info : messages) {
+                if (info.account == acc && info.jid == jid && info.messageId == id) {
+                    dup = true;
+                    break;
+                }
+            }
+            if (!dup) {
+                info->messages.emplace_back(acc, jid, id);   //TODO notification is going to happen the next tick, is that okay?
+                return true;
+            }
+        }
+    }
+    
+    return false;
+}
+
+QString Core::NetworkAccess::prepareDirectory(const QString& jid)
+{
+    QString path = currentPath;
+    QString addition;
+    if (jid.size() > 0) {
+        addition = jid;
+        path += QDir::separator() + jid;
+    }
+
+    QDir location(path);
+    
+    if (!location.exists()) {
+        bool res = location.mkpath(path);
+        if (!res) {
+            return "";
+        } else {
+            return "squawk://" + addition;
+        }
+    }
+    return "squawk://" + addition;
+}
+
+QString Core::NetworkAccess::checkFileName(const QString& name, const QString& path)
+{
+    QStringList parts = name.split(".");
+    QString suffix("");
+    QStringList::const_iterator sItr = parts.begin();
+    QString realName = *sItr;
+    ++sItr;
+    for (QStringList::const_iterator sEnd = parts.end(); sItr != sEnd; ++sItr) {
+        suffix += "." + (*sItr);
+    }
+    QString postfix("");
+    QString resolvedPath = Shared::resolvePath(path);
+    QString count("");
+    QFileInfo proposedName(resolvedPath + QDir::separator() + realName + count + suffix);
+
+    int counter = 0;
+    while (proposedName.exists()) {
+        count = QString("(") + std::to_string(++counter).c_str() + ")";
+        proposedName = QFileInfo(resolvedPath + QDir::separator() + realName + count + suffix);
+    }
+
+    return path + QDir::separator() + realName + count + suffix;
+}
+
+QString Core::NetworkAccess::addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id)
+{
+    return storage.addMessageAndCheckForPath(url, account, jid, id);
+}
+
+std::list<Shared::MessageInfo> Core::NetworkAccess::reportPathInvalid(const QString& path)
+{
+    return storage.deletedFile(path);
+}
+
+void Core::NetworkAccess::moveFilesDirectory(const QString& newPath)
+{
+    QDir dir(currentPath);
+    bool success = true;
+    qDebug() << "moving" << currentPath << "to" << newPath;
+    for (QFileInfo fileInfo : dir.entryList(QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System)) {
+        QString fileName = fileInfo.fileName();
+        success = dir.rename(fileName, newPath + QDir::separator() + fileName) && success;
+    }
+
+    if (!success) {
+        qDebug() << "couldn't move downloads directory, most probably downloads will be broken";
+    }
+    currentPath = newPath;
+}

core/networkaccess.h

@@ -26,16 +26,20 @@
 #include <QFileInfo>
 #include <QFile>
 #include <QStandardPaths>
+#include <QSettings>
 
 #include <set>
 
-#include "storage.h"
+#include "storage/urlstorage.h"
+#include "shared/pathcheck.h"
 
 namespace Core {
 
 /**
  * @todo write docs
  */
+
+//TODO Need to describe how to get rid of records when file is no longer reachable;
 class NetworkAccess : public QObject
 {
     Q_OBJECT
@@ -48,30 +52,33 @@ public:
     void stop();
     
     QString getFileRemoteUrl(const QString& path);
-    bool isUploading(const QString& path, const QString& messageId = "");
-    void uploadFile(const QString& messageId, const QString& path, const QUrl& put, const QUrl& get, const QMap<QString, QString> headers);
+    QString addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id);
+    void uploadFile(const Shared::MessageInfo& info, const QString& path, const QUrl& put, const QUrl& get, const QMap<QString, QString> headers);
+    bool checkAndAddToUploading(const QString& acc, const QString& jid, const QString id, const QString path);
+    std::list<Shared::MessageInfo> reportPathInvalid(const QString& path);
     
 signals:
-    void fileLocalPathResponse(const QString& messageId, const QString& path);
-    void downloadFileProgress(const QString& messageId, qreal value);
-    void downloadFileError(const QString& messageId, const QString& path);
-    void uploadFileProgress(const QString& messageId, qreal value);
-    void uploadFileError(const QString& messageId, const QString& path);
-    void uploadFileComplete(const QString& messageId, const QString& url);
+    void loadFileProgress(const std::list<Shared::MessageInfo>& msgs, qreal value, bool up);
+    void loadFileError(const std::list<Shared::MessageInfo>& msgs, const QString& text, bool up);
+    void uploadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path);
+    void downloadFileComplete(const std::list<Shared::MessageInfo>& msgs, const QString& path);
     
 public slots:
-    void fileLocalPathRequest(const QString& messageId, const QString& url);
-    void downladFileRequest(const QString& messageId, const QString& url);
-    void uploadFileRequest(const QString& messageId, const QString& url, const QString& path);
+    void downladFile(const QString& url);
+    void registerFile(const QString& url, const QString& account, const QString& jid, const QString& id);
+    void registerFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id);
+    void moveFilesDirectory(const QString& newPath);
     
 private:
-    void startDownload(const QString& messageId, const QString& url);
-    void startUpload(const QString& messageId, const QString& url, const QString& path);
+    void startDownload(const std::list<Shared::MessageInfo>& msgs, const QString& url);
     QString getErrorText(QNetworkReply::NetworkError code);
+    QString prepareDirectory(const QString& jid);
+    QString checkFileName(const QString& name, const QString& path);
     
 private slots:
     void onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal);
     void onDownloadError(QNetworkReply::NetworkError code);
+    void onDownloadSSLError(const QList<QSslError> &errors);
     void onDownloadFinished();
     void onUploadProgress(qint64 bytesReceived, qint64 bytesTotal);
     void onUploadError(QNetworkReply::NetworkError code);
@@ -80,12 +87,13 @@ private slots:
 private:
     bool running;
     QNetworkAccessManager* manager;
-    Storage files;
+    UrlStorage storage;
     std::map<QString, Transfer*> downloads;
     std::map<QString, Transfer*> uploads;
+    QString currentPath;
     
     struct Transfer {
-        std::set<QString> messages;
+        std::list<Shared::MessageInfo> messages;
         qreal progress;
         QNetworkReply* reply;
         bool success;

core/passwordStorageEngines/CMakeLists.txt

@@ -1,37 +1,9 @@
-cmake_minimum_required(VERSION 3.0)
-project(pse)
-
-if (WITH_KWALLET) 
-    set(CMAKE_AUTOMOC ON)
-
-    find_package(Qt5Core CONFIG REQUIRED)
-    find_package(Qt5Gui CONFIG REQUIRED)
-
-    get_target_property(KWALLET_INTERFACE_INCLUDE_DIRECTORIES KF5::Wallet INTERFACE_INCLUDE_DIRECTORIES)
-    get_target_property(Qt5GUI_INTERFACE_INCLUDE_DIRECTORIES Qt5::Gui INTERFACE_INCLUDE_DIRECTORIES)
-
-    set(kwalletPSE_SRC
-        kwallet.cpp
-    )
-    
-    add_library(kwalletPSE ${kwalletPSE_SRC})
-    
-    target_include_directories(kwalletPSE PUBLIC ${KWALLET_INTERFACE_INCLUDE_DIRECTORIES})
-    target_include_directories(kwalletPSE PUBLIC ${Qt5GUI_INTERFACE_INCLUDE_DIRECTORIES})
-
-    target_link_libraries(kwalletPSE Qt5::Core)
-
-    set(kwalletW_SRC
-        wrappers/kwallet.cpp
+if (WITH_KWALLET)
+  target_sources(squawk PRIVATE
+    kwallet.cpp
+    kwallet.h
     )
 
-    add_library(kwalletWrapper SHARED ${kwalletW_SRC})
-
-    target_include_directories(kwalletWrapper PUBLIC ${KWALLET_INTERFACE_INCLUDE_DIRECTORIES})
-    target_include_directories(kwalletWrapper PUBLIC ${Qt5GUI_INTERFACE_INCLUDE_DIRECTORIES})
-
-    target_link_libraries(kwalletWrapper KF5::Wallet)
-    target_link_libraries(kwalletWrapper Qt5::Core)
-
-    install(TARGETS kwalletWrapper DESTINATION ${CMAKE_INSTALL_LIBDIR})
-endif()
+  add_subdirectory(wrappers)
+  target_include_directories(squawk PRIVATE $<TARGET_PROPERTY:KF5::Wallet,INTERFACE_INCLUDE_DIRECTORIES>)
+endif ()

core/passwordStorageEngines/wrappers/CMakeLists.txt

@@ -0,0 +1,4 @@
+add_library(kwalletWrapper SHARED kwallet.cpp)
+target_link_libraries(kwalletWrapper PRIVATE KF5::Wallet)
+
+install(TARGETS kwalletWrapper LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})

core/passwordStorageEngines/wrappers/kwallet.cpp

@@ -1,3 +1,21 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include <KF5/KWallet/KWallet>
 
 extern "C" KWallet::Wallet* openWallet(const QString &name, WId w, KWallet::Wallet::OpenType ot = KWallet::Wallet::Synchronous) {

core/rosteritem.cpp

@@ -122,7 +122,26 @@ void Core::RosterItem::nextRequest()
 {
     if (syncronizing) {
         if (requestedCount != -1) {
-            emit historyResponse(responseCache);
+            bool last = false;
+            if (archiveState == beginning || archiveState == complete) {
+                try {
+                    QString firstId = archive->oldestId();
+                    if (responseCache.size() == 0) {
+                        if (requestedBefore == firstId) {
+                            last = true;
+                        }
+                    } else {
+                        if (responseCache.front().getId() == firstId) {
+                            last = true;
+                        }
+                    }
+                } catch (const Archive::Empty& e) {
+                    last = true;
+                }
+            } else if (archiveState == empty && responseCache.size() == 0) {
+                last = true;
+            }
+            emit historyResponse(responseCache, last);
         }
     }
     if (requestCache.size() > 0) {
@@ -156,8 +175,12 @@ void Core::RosterItem::performRequest(int count, const QString& before)
                 requestCache.emplace_back(requestedCount, before);
                 requestedCount = -1;
             }
-            Shared::Message msg = archive->newest();
-            emit needHistory("", msg.getId(), msg.getTime());
+            try {
+                Shared::Message msg = archive->newest();
+                emit needHistory("", getId(msg), msg.getTime());
+            } catch (const Archive::Empty& e) {                     //this can happen when the only message in archive is not server stored (error, for example)
+                emit needHistory(before, "");
+            }
         }
             break;
         case end: 
@@ -176,27 +199,37 @@ void Core::RosterItem::performRequest(int count, const QString& before)
                 } catch (const Archive::NotFound& e) {
                     requestCache.emplace_back(requestedCount, before);
                     requestedCount = -1;
-                    emit needHistory(archive->oldestId(), "");
+                    emit needHistory(getId(archive->oldest()), "");
                 } catch (const Archive::Empty& e) {
                     requestCache.emplace_back(requestedCount, before);
                     requestedCount = -1;
-                    emit needHistory(archive->oldestId(), "");
+                    emit needHistory(getId(archive->oldest()), "");
                 }
                 
                 if (found) {
                     int rSize = responseCache.size();
                     if (rSize < count) {
                         if (rSize != 0) {
-                            emit needHistory(responseCache.front().getId(), "");
+                            emit needHistory(getId(responseCache.front()), "");
                         } else {
-                            emit needHistory(before, "");
+                            QString bf;
+                            if (muc) {
+                                bf = archive->stanzaIdById(before);
+                                if (bf.size() < 0) {
+                                    qDebug() << "Didn't find stanzaId for id requesting history for" << jid << ", falling back to requesting by id";
+                                    bf = before;
+                                }
+                            } else {
+                                bf = before;
+                            }
+                            emit needHistory(bf, "");
                         }
                     } else {
                         nextRequest();
                     }
                 }
             } else {
-                emit needHistory(archive->oldestId(), "");
+                emit needHistory(getId(archive->oldest()), "");
             }
             break;
         case complete:
@@ -213,10 +246,20 @@ void Core::RosterItem::performRequest(int count, const QString& before)
     }
 }
 
+QString Core::RosterItem::getId(const Shared::Message& msg)
+{
+    QString id;
+    if (muc) {
+        id = msg.getStanzaId();
+    } else {
+        id = msg.getId();
+    }
+    return id;
+}
+
 void Core::RosterItem::appendMessageToArchive(const Shared::Message& msg)
 {
-    const QString& id = msg.getId(); 
-    if (id.size() > 0) {
+    if (msg.getId().size() > 0) {
         if (msg.storable()) {
             switch (archiveState) {
                 case empty:
@@ -224,22 +267,26 @@ void Core::RosterItem::appendMessageToArchive(const Shared::Message& msg)
                         archiveState = end;
                     }
                     if (!syncronizing) {
-                        requestHistory(-1, id);
+                        requestHistory(-1, getId(msg));
                     }
                     break;
                 case beginning:
-                    appendCache.push_back(msg);
-                    if (!syncronizing) {
-                        requestHistory(-1, id);
+                    if (!archive->hasElement(msg.getId())) {
+                        appendCache.push_back(msg);
+                        if (!syncronizing) {
+                            requestHistory(-1, getId(msg));
+                        }
                     }
                     break;
                 case end:
                     archive->addElement(msg);
                     break;
                 case chunk:
-                    appendCache.push_back(msg);
-                    if (!syncronizing) {
-                        requestHistory(-1, id);
+                    if (!archive->hasElement(msg.getId())) {
+                        appendCache.push_back(msg);
+                        if (!syncronizing) {
+                            requestHistory(-1, getId(msg));
+                        }
                     }
                     break;
                 case complete:
@@ -247,7 +294,7 @@ void Core::RosterItem::appendMessageToArchive(const Shared::Message& msg)
                     break;
             }
         } else if (!syncronizing && archiveState == empty) {
-            requestHistory(-1, id);
+            requestHistory(-1, getId(msg));
         }
     }
 }
@@ -336,6 +383,11 @@ void Core::RosterItem::flushMessagesToArchive(bool finished, const QString& firs
                 archiveState = complete;
                 archive->setFromTheBeginning(true);
             }
+            if (added == 0 && wasEmpty) {
+                archiveState = empty;
+                nextRequest();
+                break;
+            }
             if (requestedCount != -1) {
                 QString before;
                 if (responseCache.size() > 0) {
@@ -354,7 +406,7 @@ void Core::RosterItem::flushMessagesToArchive(bool finished, const QString& firs
                 } catch (const Archive::Empty& e) {
                     
                 }
-                if (!found || requestedCount > responseCache.size()) {
+                if (!found || requestedCount > int(responseCache.size())) {
                     if (archiveState == complete) {
                         nextRequest();
                     } else {
@@ -377,26 +429,6 @@ void Core::RosterItem::flushMessagesToArchive(bool finished, const QString& firs
     }
 }
 
-void Core::RosterItem::requestFromEmpty(int count, const QString& before)
-{
-    if (syncronizing) {
-        qDebug("perform from empty didn't work, another request queued");
-    } else {
-        if (archiveState != empty) {
-            qDebug("perform from empty didn't work, the state is not empty");
-            requestHistory(count, before);
-        } else {
-            syncronizing = true;
-            requestedCount = count;
-            requestedBefore = "";
-            hisoryCache.clear();
-            responseCache.clear();
-            
-            emit needHistory(before, "");
-        }
-    }
-}
-
 QString Core::RosterItem::getServer() const
 {
     QStringList lst = jid.split("@");
@@ -518,3 +550,47 @@ Shared::VCard Core::RosterItem::handleResponseVCard(const QXmppVCardIq& card, co
     return vCard;
 }
 
+void Core::RosterItem::clearArchiveRequests()
+{
+    syncronizing = false;
+    requestedCount = 0;
+    requestedBefore = "";
+    for (const std::pair<int, QString>& pair : requestCache) {
+        if (pair.first != -1) {
+            emit historyResponse(responseCache, false);        //just to notify those who still waits with whatever happened to be left in caches yet
+        }
+        responseCache.clear();
+    }
+    hisoryCache.clear();
+    responseCache.clear();  //in case the cycle never runned
+    appendCache.clear();
+    requestCache.clear();
+}
+
+void Core::RosterItem::downgradeDatabaseState()
+{
+    if (archiveState == ArchiveState::complete) {
+        archiveState = ArchiveState::beginning;
+    }
+    
+    if (archiveState == ArchiveState::end) {
+        archiveState = ArchiveState::chunk;
+    }
+}
+
+Shared::Message Core::RosterItem::getMessage(const QString& id)
+{
+    for (const Shared::Message& msg : appendCache) {
+        if (msg.getId() == id) {
+            return msg;
+        }
+    }
+    
+    for (Shared::Message& msg : hisoryCache) {
+        if (msg.getId() == id) {
+            return msg;
+        }
+    }
+    
+    return archive->getElement(id);
+}

core/rosteritem.h

@@ -34,7 +34,8 @@
 #include "shared/enums.h"
 #include "shared/message.h"
 #include "shared/vcard.h"
-#include "archive.h"
+#include "storage/archive.h"
+#include "adapterfunctions.h"
 
 namespace Core {
 
@@ -67,7 +68,6 @@ public:
     void appendMessageToArchive(const Shared::Message& msg);
     void flushMessagesToArchive(bool finished, const QString& firstId, const QString& lastId);
     void requestHistory(int count, const QString& before);
-    void requestFromEmpty(int count, const QString& before);
     QString avatarPath(const QString& resource = "") const;
     QString folderPath() const;
     bool readAvatarInfo(Archive::AvatarInfo& target, const QString& resource = "") const;
@@ -76,11 +76,15 @@ public:
     virtual void handlePresence(const QXmppPresence& pres) = 0;
     
     bool changeMessage(const QString& id, const QMap<QString, QVariant>& data);
+    void clearArchiveRequests();
+    void downgradeDatabaseState();
+    
+    Shared::Message getMessage(const QString& id);
     
 signals:
     void nameChanged(const QString& name);
     void subscriptionStateChanged(Shared::SubscriptionState state);
-    void historyResponse(const std::list<Shared::Message>& messages);
+    void historyResponse(const std::list<Shared::Message>& messages, bool last);
     void needHistory(const QString& before, const QString& after, const QDateTime& afterTime = QDateTime());
     void avatarChanged(Shared::Avatar, const QString& path);
     void requestVCard(const QString& jid);
@@ -111,6 +115,7 @@ protected:
 private:
     void nextRequest();
     void performRequest(int count, const QString& before);
+    QString getId(const Shared::Message& msg);
 };
 
 }

core/signalcatcher.cpp

@@ -48,9 +48,9 @@ void SignalCatcher::handleSigInt()
 {
     snInt->setEnabled(false);
     char tmp;
-    ::read(sigintFd[1], &tmp, sizeof(tmp));
+    ssize_t s = ::read(sigintFd[1], &tmp, sizeof(tmp));
 
-    app->quit();
+    emit interrupt();
 
     snInt->setEnabled(true);
 }
@@ -58,7 +58,7 @@ void SignalCatcher::handleSigInt()
 void SignalCatcher::intSignalHandler(int unused)
 {
     char a = 1;
-    ::write(sigintFd[0], &a, sizeof(a));
+    ssize_t s = ::write(sigintFd[0], &a, sizeof(a));
 }
 
 int SignalCatcher::setup_unix_signal_handlers()

core/signalcatcher.h

@@ -33,6 +33,9 @@ public:
     
     static void intSignalHandler(int unused);
     
+signals:
+    void interrupt();
+
 public slots:
     void handleSigInt();
     

core/signalcatcher_win32.cpp

@@ -0,0 +1,42 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2021  Shunf4 <shun1048576@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "signalcatcher.h"
+#include <unistd.h>
+
+SignalCatcher::SignalCatcher(QCoreApplication *p_app, QObject *parent):
+    QObject(parent),
+    app(p_app)
+{
+}
+
+SignalCatcher::~SignalCatcher()
+{}
+
+void SignalCatcher::handleSigInt()
+{
+}
+
+void SignalCatcher::intSignalHandler(int unused)
+{
+}
+
+int SignalCatcher::setup_unix_signal_handlers()
+{
+    return 0;
+}

core/squawk.cpp

@@ -26,23 +26,23 @@ Core::Squawk::Squawk(QObject* parent):
     QObject(parent),
     accounts(),
     amap(),
+    state(Shared::Availability::offline),
     network(),
-    waitingForAccounts(0)
+    isInitialized(false)
 #ifdef WITH_KWALLET
     ,kwallet()
 #endif
 {
-    connect(&network, &NetworkAccess::fileLocalPathResponse, this, &Squawk::fileLocalPathResponse);
-    connect(&network, &NetworkAccess::downloadFileProgress, this, &Squawk::downloadFileProgress);
-    connect(&network, &NetworkAccess::downloadFileError, this, &Squawk::downloadFileError);
-    connect(&network, &NetworkAccess::uploadFileProgress, this, &Squawk::uploadFileProgress);
-    connect(&network, &NetworkAccess::uploadFileError, this, &Squawk::uploadFileError);
+    connect(&network, &NetworkAccess::loadFileProgress, this, &Squawk::fileProgress);
+    connect(&network, &NetworkAccess::loadFileError, this, &Squawk::fileError);
+    connect(&network, &NetworkAccess::downloadFileComplete, this, &Squawk::fileDownloadComplete);
+    connect(&network, &NetworkAccess::uploadFileComplete, this, &Squawk::fileUploadComplete);
     
 #ifdef WITH_KWALLET
     if (kwallet.supportState() == PSE::KWallet::success) {
         connect(&kwallet, &PSE::KWallet::opened, this, &Squawk::onWalletOpened);
         connect(&kwallet, &PSE::KWallet::rejectPassword, this, &Squawk::onWalletRejectPassword);
-        connect(&kwallet, &PSE::KWallet::responsePassword, this, &Squawk::onWalletResponsePassword);
+        connect(&kwallet, &PSE::KWallet::responsePassword, this, &Squawk::responsePassword);
         
         Shared::Global::setSupported("KWallet", true);
     }
@@ -67,39 +67,43 @@ void Core::Squawk::stop()
 {
     qDebug("Stopping squawk core..");
     network.stop();
-    QSettings settings;
-    settings.beginGroup("core");
-    settings.beginWriteArray("accounts");
-    SimpleCrypt crypto(passwordHash);
-    for (std::deque<Account*>::size_type i = 0; i < accounts.size(); ++i) {
-        settings.setArrayIndex(i);
-        Account* acc = accounts[i];
-        
-        Shared::AccountPassword ap = acc->getPasswordType();
-        QString password;
-        
-        switch (ap) {
-            case Shared::AccountPassword::plain:
-                password = acc->getPassword();
-                break;
-            case Shared::AccountPassword::jammed:
-                password = crypto.encryptToString(acc->getPassword());
-                break;
-            default:
-                break;
+
+    if (isInitialized) {
+        QSettings settings;
+        settings.beginGroup("core");
+        settings.beginWriteArray("accounts");
+        SimpleCrypt crypto(passwordHash);
+        for (std::deque<Account*>::size_type i = 0; i < accounts.size(); ++i) {
+            settings.setArrayIndex(i);
+            Account* acc = accounts[i];
+
+            Shared::AccountPassword ap = acc->getPasswordType();
+            QString password;
+
+            switch (ap) {
+                case Shared::AccountPassword::plain:
+                    password = acc->getPassword();
+                    break;
+                case Shared::AccountPassword::jammed:
+                    password = crypto.encryptToString(acc->getPassword());
+                    break;
+                default:
+                    break;
+            }
+
+            settings.setValue("name", acc->getName());
+            settings.setValue("server", acc->getServer());
+            settings.setValue("login", acc->getLogin());
+            settings.setValue("password", password);
+            settings.setValue("resource", acc->getResource());
+            settings.setValue("passwordType", static_cast<int>(ap));
+            settings.setValue("active", acc->getActive());
         }
-        
-        settings.setValue("name", acc->getName());
-        settings.setValue("server", acc->getServer());
-        settings.setValue("login", acc->getLogin());
-        settings.setValue("password", password);
-        settings.setValue("resource", acc->getResource());
-        settings.setValue("passwordType", static_cast<int>(ap));
+        settings.endArray();
+        settings.endGroup();
+
+        settings.sync();
     }
-    settings.endArray();
-    settings.endGroup();
-    
-    settings.sync();
     
     emit quit();
 }
@@ -109,6 +113,7 @@ void Core::Squawk::start()
     qDebug("Starting squawk core..");
     
     readSettings();
+    isInitialized = true;
     network.start();
 }
 
@@ -119,8 +124,10 @@ void Core::Squawk::newAccountRequest(const QMap<QString, QVariant>& map)
     QString server = map.value("server").toString();
     QString password = map.value("password").toString();
     QString resource = map.value("resource").toString();
+    int passwordType = map.value("passwordType").toInt();
+    bool active = map.value("active").toBool();
     
-    addAccount(login, server, password, name, resource, Shared::AccountPassword::plain);
+    addAccount(login, server, password, name, resource, active, Shared::Global::fromInt<Shared::AccountPassword>(passwordType));
 }
 
 void Core::Squawk::addAccount(
@@ -128,16 +135,16 @@ void Core::Squawk::addAccount(
     const QString& server, 
     const QString& password, 
     const QString& name, 
-    const QString& resource,                          
-    Shared::AccountPassword passwordType
-)
+    const QString& resource,
+    bool active,
+    Shared::AccountPassword passwordType)
 {
-    QSettings settings;
-    unsigned int reconnects = settings.value("reconnects", 2).toUInt();
-    
-    Account* acc = new Account(login, server, password, name, &network);
+    if (amap.count(name) > 0) {
+        qDebug() << "An attempt to add account" << name << "but an account with such name already exist, ignoring";
+        return;
+    }
+    Account* acc = new Account(login, server, password, name, active, &network);
     acc->setResource(resource);
-    acc->setReconnectTimes(reconnects);
     acc->setPasswordType(passwordType);
     accounts.push_back(acc);
     amap.insert(std::make_pair(name, acc));
@@ -145,6 +152,8 @@ void Core::Squawk::addAccount(
     connect(acc, &Account::connectionStateChanged, this, &Squawk::onAccountConnectionStateChanged);
     connect(acc, &Account::changed, this, &Squawk::onAccountChanged);
     connect(acc, &Account::error, this, &Squawk::onAccountError);
+    connect(acc, &Account::needPassword, this, &Squawk::onAccountNeedPassword);
+
     connect(acc, &Account::availabilityChanged, this, &Squawk::onAccountAvailabilityChanged);
     connect(acc, &Account::addContact, this, &Squawk::onAccountAddContact);
     connect(acc, &Account::addGroup, this, &Squawk::onAccountAddGroup);
@@ -170,7 +179,7 @@ void Core::Squawk::addAccount(
     
     connect(acc, &Account::receivedVCard, this, &Squawk::responseVCard);
     
-    connect(acc, &Account::uploadFileError, this, &Squawk::uploadFileError);
+    connect(acc, &Account::uploadFileError, this, &Squawk::onAccountUploadFileError);
     
     QMap<QString, QVariant> map = {
         {"login", login},
@@ -182,20 +191,44 @@ void Core::Squawk::addAccount(
         {"offline", QVariant::fromValue(Shared::Availability::offline)},
         {"error", ""},
         {"avatarPath", acc->getAvatarPath()},
-        {"passwordType", QVariant::fromValue(passwordType)}
+        {"passwordType", QVariant::fromValue(passwordType)},
+        {"active", active}
     };
     
     emit newAccount(map);
+
+    switch (passwordType) {
+        case Shared::AccountPassword::alwaysAsk:
+        case Shared::AccountPassword::kwallet:
+            if (password == "") {
+                acc->invalidatePassword();
+                break;
+            }
+        default:
+            break;
+    }
+
+    if (state != Shared::Availability::offline) {
+        acc->setAvailability(state);
+        if (acc->getActive()) {
+            acc->connect();
+        }
+    }
 }
 
 void Core::Squawk::changeState(Shared::Availability p_state)
 {
     if (state != p_state) {
+        for (std::deque<Account*>::iterator itr = accounts.begin(), end = accounts.end(); itr != end; ++itr) {
+            Account* acc = *itr;
+            acc->setAvailability(p_state);
+            if (state == Shared::Availability::offline && acc->getActive()) {
+                acc->connect();
+            }
+        }
         state = p_state;
-    }
-    
-    for (std::deque<Account*>::iterator itr = accounts.begin(), end = accounts.end(); itr != end; ++itr) {
-        (*itr)->setAvailability(state);
+
+        emit stateChanged(p_state);
     }
 }
 
@@ -206,7 +239,10 @@ void Core::Squawk::connectAccount(const QString& account)
         qDebug("An attempt to connect non existing account, skipping");
         return;
     }
-    itr->second->connect();
+    itr->second->setActive(true);
+    if (state != Shared::Availability::offline) {
+        itr->second->connect();
+    }
 }
 
 void Core::Squawk::disconnectAccount(const QString& account)
@@ -217,38 +253,25 @@ void Core::Squawk::disconnectAccount(const QString& account)
         return;
     }
     
+    itr->second->setActive(false);
     itr->second->disconnect();
 }
 
 void Core::Squawk::onAccountConnectionStateChanged(Shared::ConnectionState p_state)
 {
     Account* acc = static_cast<Account*>(sender());
-    emit changeAccount(acc->getName(), {{"state", QVariant::fromValue(p_state)}});
-    
-    switch (p_state) {
-        case Shared::ConnectionState::disconnected: {
-                bool equals = true;
-                for (Accounts::const_iterator itr = accounts.begin(), end = accounts.end(); itr != end; itr++) {
-                    if ((*itr)->getState() != Shared::ConnectionState::disconnected) {
-                        equals = false;
-                    }
-                }
-                if (equals && state != Shared::Availability::offline) {
-                    state = Shared::Availability::offline;
-                    emit stateChanged(state);
-                }
-            }
-            break;
-        case Shared::ConnectionState::connected:
+    emit changeAccount(acc->getName(), {
+        {"state", QVariant::fromValue(p_state)},
+        {"error", ""}
+    });
+
 #ifdef WITH_KWALLET
-            if (acc->getPasswordType() == Shared::AccountPassword::kwallet && kwallet.supportState() == PSE::KWallet::success) {
-                kwallet.requestWritePassword(acc->getName(), acc->getPassword(), true);
-            }
-#endif
-            break;
-        default:
-            break;
+    if (p_state == Shared::ConnectionState::connected) {
+        if (acc->getPasswordType() == Shared::AccountPassword::kwallet && kwallet.supportState() == PSE::KWallet::success) {
+            kwallet.requestWritePassword(acc->getName(), acc->getPassword(), true);
+        }
     }
+#endif
 }
 
 void Core::Squawk::onAccountAddContact(const QString& jid, const QString& group, const QMap<QString, QVariant>& data)
@@ -321,22 +344,33 @@ void Core::Squawk::sendMessage(const QString& account, const Shared::Message& da
 {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
-        qDebug("An attempt to send a message with non existing account, skipping");
+        qDebug() << "An attempt to send a message with non existing account" << account << ", skipping";
         return;
     }
     
     itr->second->sendMessage(data);
 }
 
-void Core::Squawk::sendMessage(const QString& account, const Shared::Message& data, const QString& path)
+void Core::Squawk::replaceMessage(const QString& account, const QString& originalId, const Shared::Message& data)
 {
     AccountsMap::const_iterator itr = amap.find(account);
     if (itr == amap.end()) {
-        qDebug("An attempt to send a message with non existing account, skipping");
+        qDebug() << "An attempt to replace a message with non existing account" << account << ", skipping";
+        return;
+    }
+
+    itr->second->replaceMessage(originalId, data);
+}
+
+void Core::Squawk::resendMessage(const QString& account, const QString& jid, const QString& id)
+{
+    AccountsMap::const_iterator itr = amap.find(account);
+    if (itr == amap.end()) {
+        qDebug() << "An attempt to resend a message with non existing account" << account << ", skipping";
         return;
     }
     
-    itr->second->sendMessage(data, path);
+    itr->second->resendMessage(jid, id);
 }
 
 void Core::Squawk::requestArchive(const QString& account, const QString& jid, int count, const QString& before)
@@ -349,10 +383,10 @@ void Core::Squawk::requestArchive(const QString& account, const QString& jid, in
     itr->second->requestArchive(jid, count, before);
 }
 
-void Core::Squawk::onAccountResponseArchive(const QString& jid, const std::list<Shared::Message>& list)
+void Core::Squawk::onAccountResponseArchive(const QString& jid, const std::list<Shared::Message>& list, bool last)
 {
     Account* acc = static_cast<Account*>(sender());
-    emit responseArchive(acc->getName(), jid, list);
+    emit responseArchive(acc->getName(), jid, list, last);
 }
 
 void Core::Squawk::modifyAccountRequest(const QString& name, const QMap<QString, QVariant>& map)
@@ -367,6 +401,7 @@ void Core::Squawk::modifyAccountRequest(const QString& name, const QMap<QString,
     Shared::ConnectionState st = acc->getState();
     QMap<QString, QVariant>::const_iterator mItr;
     bool needToReconnect = false;
+    bool wentReconnecting = false;
     
     mItr = map.find("login");
     if (mItr != map.end()) {
@@ -392,8 +427,16 @@ void Core::Squawk::modifyAccountRequest(const QString& name, const QMap<QString,
         }
     }
     
-    if (needToReconnect && st != Shared::ConnectionState::disconnected) {
-        acc->reconnect();
+    bool activeChanged = false;
+    mItr = map.find("active");
+    if (mItr == map.end() || mItr->toBool() == acc->getActive()) {
+        if (needToReconnect && st != Shared::ConnectionState::disconnected) {
+            acc->reconnect();
+            wentReconnecting = true;
+        }
+    } else {
+        acc->setActive(mItr->toBool());
+        activeChanged = true;
     }
     
     mItr = map.find("login");
@@ -430,6 +473,14 @@ void Core::Squawk::modifyAccountRequest(const QString& name, const QMap<QString,
     }
 #endif
     
+    if (state != Shared::Availability::offline) {
+        if (activeChanged && acc->getActive()) {
+            acc->connect();
+        } else if (!wentReconnecting && acc->getActive() && acc->getLastError() == Account::Error::authentication) {
+            acc->connect();
+        }
+    }
+
     emit changeAccount(name, map);
 }
 
@@ -437,6 +488,10 @@ void Core::Squawk::onAccountError(const QString& text)
 {
     Account* acc = static_cast<Account*>(sender());
     emit changeAccount(acc->getName(), {{"error", text}});
+
+    if (acc->getLastError() == Account::Error::authentication) {
+        emit requestPassword(acc->getName(), true);
+    }
 }
 
 void Core::Squawk::removeAccountRequest(const QString& name)
@@ -596,14 +651,9 @@ void Core::Squawk::addRoomRequest(const QString& account, const QString& jid, co
     itr->second->addRoomRequest(jid, nick, password, autoJoin);
 }
 
-void Core::Squawk::fileLocalPathRequest(const QString& messageId, const QString& url)
+void Core::Squawk::fileDownloadRequest(const QString& url)
 {
-    network.fileLocalPathRequest(messageId, url);
-}
-
-void Core::Squawk::downloadFileRequest(const QString& messageId, const QString& url)
-{
-    network.downladFileRequest(messageId, url);
+    network.downladFile(url);
 }
 
 void Core::Squawk::addContactToGroupRequest(const QString& account, const QString& jid, const QString& groupName)
@@ -656,6 +706,70 @@ void Core::Squawk::uploadVCard(const QString& account, const Shared::VCard& card
     itr->second->uploadVCard(card);
 }
 
+void Core::Squawk::readSettings()
+{
+    QSettings settings;
+    settings.beginGroup("core");
+    int size = settings.beginReadArray("accounts");
+    for (int i = 0; i < size; ++i) {
+        settings.setArrayIndex(i);
+        Shared::AccountPassword passwordType =
+            Shared::Global::fromInt<Shared::AccountPassword>(
+                settings.value("passwordType", static_cast<int>(Shared::AccountPassword::plain)).toInt()
+            );
+
+        QString password = settings.value("password", "").toString();
+        if (passwordType == Shared::AccountPassword::jammed) {
+            SimpleCrypt crypto(passwordHash);
+            password = crypto.decryptToString(password);
+        }
+
+        addAccount(
+            settings.value("login").toString(), 
+            settings.value("server").toString(), 
+            password,
+            settings.value("name").toString(),
+            settings.value("resource").toString(),
+            settings.value("active").toBool(),
+            passwordType
+        );
+    }
+    settings.endArray();
+    settings.endGroup();
+
+    qDebug() << "Squawk core is ready";
+    emit ready();
+}
+
+void Core::Squawk::onAccountNeedPassword()
+{
+    Account* acc = static_cast<Account*>(sender());
+    switch (acc->getPasswordType()) {
+        case Shared::AccountPassword::alwaysAsk:
+            emit requestPassword(acc->getName(), false);
+            break;
+        case Shared::AccountPassword::kwallet: {
+#ifdef WITH_KWALLET
+            if (kwallet.supportState() == PSE::KWallet::success) {
+                kwallet.requestReadPassword(acc->getName());
+            } else {
+#endif
+                emit requestPassword(acc->getName(), false);
+#ifdef WITH_KWALLET
+            }
+#endif
+            break;
+        }
+        default:
+            break;      //should never happen;
+    }
+}
+
+void Core::Squawk::onWalletRejectPassword(const QString& login)
+{
+    emit requestPassword(login, false);
+}
+
 void Core::Squawk::responsePassword(const QString& account, const QString& password)
 {
     AccountsMap::const_iterator itr = amap.find(account);
@@ -663,92 +777,39 @@ void Core::Squawk::responsePassword(const QString& account, const QString& passw
         qDebug() << "An attempt to set password to non existing account" << account << ", skipping";
         return;
     }
-    itr->second->setPassword(password);
-    accountReady();
-}
-
-void Core::Squawk::readSettings()
-{
-    QSettings settings;
-    settings.beginGroup("core");
-    int size = settings.beginReadArray("accounts");
-    waitingForAccounts = size;
-    for (int i = 0; i < size; ++i) {
-        settings.setArrayIndex(i);
-        parseAccount(
-            settings.value("login").toString(), 
-            settings.value("server").toString(), 
-            settings.value("password", "").toString(), 
-            settings.value("name").toString(), 
-            settings.value("resource").toString(),
-            Shared::Global::fromInt<Shared::AccountPassword>(settings.value("passwordType", static_cast<int>(Shared::AccountPassword::plain)).toInt())
-        );
+    Account* acc = itr->second;
+    acc->setPassword(password);
+    emit changeAccount(account, {{"password", password}});
+    if (state != Shared::Availability::offline && acc->getActive()) {
+        acc->connect();
     }
-    settings.endArray();
-    settings.endGroup();
 }
 
-void Core::Squawk::accountReady()
+void Core::Squawk::onAccountUploadFileError(const QString& jid, const QString id, const QString& errorText)
 {
-    --waitingForAccounts;
+    Account* acc = static_cast<Account*>(sender());
+    emit fileError({{acc->getName(), jid, id}}, errorText, true);
+}
+
+void Core::Squawk::onLocalPathInvalid(const QString& path)
+{
+    std::list<Shared::MessageInfo> list = network.reportPathInvalid(path);
     
-    if (waitingForAccounts == 0) {
-        emit ready();
-    }
-}
-
-void Core::Squawk::parseAccount(
-    const QString& login, 
-    const QString& server, 
-    const QString& password, 
-    const QString& name, 
-    const QString& resource, 
-    Shared::AccountPassword passwordType
-)
-{
-    switch (passwordType) {
-        case Shared::AccountPassword::plain:
-            addAccount(login, server, password, name, resource, passwordType);
-            accountReady();
-            break;
-        case Shared::AccountPassword::jammed: {
-            SimpleCrypt crypto(passwordHash);
-            QString decrypted = crypto.decryptToString(password);
-            addAccount(login, server, decrypted, name, resource, passwordType);
-            accountReady();
-        }
-            break;
-        case Shared::AccountPassword::alwaysAsk: 
-            addAccount(login, server, QString(), name, resource, passwordType);
-            emit requestPassword(name);
-            break;
-        case Shared::AccountPassword::kwallet: {
-            addAccount(login, server, QString(), name, resource, passwordType);
-#ifdef WITH_KWALLET
-            if (kwallet.supportState() == PSE::KWallet::success) {
-                kwallet.requestReadPassword(name);
-            } else {
-#endif
-                emit requestPassword(name);
-#ifdef WITH_KWALLET
-            }
-#endif
+    QMap<QString, QVariant> data({
+        {"attachPath", ""}
+    });
+    for (const Shared::MessageInfo& info : list) {
+        AccountsMap::const_iterator itr = amap.find(info.account);
+        if (itr != amap.end()) {
+            itr->second->requestChangeMessage(info.jid, info.messageId, data);
+        } else {
+            qDebug() << "Reacting on failure to reach file" << path << "there was an attempt to change message in account" << info.account << "which doesn't exist, skipping";
         }
     }
 }
 
-void Core::Squawk::onWalletRejectPassword(const QString& login)
+void Core::Squawk::changeDownloadsPath(const QString& path)
 {
-    emit requestPassword(login);
+    network.moveFilesDirectory(path);
 }
 
-void Core::Squawk::onWalletResponsePassword(const QString& login, const QString& password)
-{
-    AccountsMap::const_iterator itr = amap.find(login);
-    if (itr == amap.end()) {
-        qDebug() << "An attempt to set password to non existing account" << login << ", skipping";
-        return;
-    }
-    itr->second->setPassword(password);
-    accountReady();
-}

core/squawk.h

@@ -51,47 +51,60 @@ public:
 signals:
     void quit();
     void ready();
+    
     void newAccount(const QMap<QString, QVariant>&);
     void changeAccount(const QString& account, const QMap<QString, QVariant>& data);
     void removeAccount(const QString& account);
+    
     void addGroup(const QString& account, const QString& name);
     void removeGroup(const QString& account, const QString& name);
+    
     void addContact(const QString& account, const QString& jid, const QString& group, const QMap<QString, QVariant>& data);
     void removeContact(const QString& account, const QString& jid);
     void removeContact(const QString& account, const QString& jid, const QString& group);
     void changeContact(const QString& account, const QString& jid, const QMap<QString, QVariant>& data);
+    
     void addPresence(const QString& account, const QString& jid, const QString& name, const QMap<QString, QVariant>& data);
     void removePresence(const QString& account, const QString& jid, const QString& name);
+    
     void stateChanged(Shared::Availability state);
+    
     void accountMessage(const QString& account, const Shared::Message& data);
-    void responseArchive(const QString& account, const QString& jid, const std::list<Shared::Message>& list);
+    void responseArchive(const QString& account, const QString& jid, const std::list<Shared::Message>& list, bool last);
+    
     void addRoom(const QString& account, const QString jid, const QMap<QString, QVariant>& data);
     void changeRoom(const QString& account, const QString jid, const QMap<QString, QVariant>& data);
     void removeRoom(const QString& account, const QString jid);
     void addRoomParticipant(const QString& account, const QString& jid, const QString& name, const QMap<QString, QVariant>& data);
     void changeRoomParticipant(const QString& account, const QString& jid, const QString& name, const QMap<QString, QVariant>& data);
     void removeRoomParticipant(const QString& account, const QString& jid, const QString& name);
-    void fileLocalPathResponse(const QString& messageId, const QString& path);
-    void downloadFileError(const QString& messageId, const QString& error);
-    void downloadFileProgress(const QString& messageId, qreal value);
-    void uploadFileError(const QString& messageId, const QString& error);
-    void uploadFileProgress(const QString& messageId, qreal value);
+    
+    void fileError(const std::list<Shared::MessageInfo> msgs, const QString& error, bool up);
+    void fileProgress(const std::list<Shared::MessageInfo> msgs, qreal value, bool up);
+    void fileDownloadComplete(const std::list<Shared::MessageInfo> msgs, const QString& path);
+    void fileUploadComplete(const std::list<Shared::MessageInfo> msgs, const QString& url, const QString& path);
+    
     void responseVCard(const QString& jid, const Shared::VCard& card);
     void changeMessage(const QString& account, const QString& jid, const QString& id, const QMap<QString, QVariant>& data);
-    void requestPassword(const QString& account);
+    void requestPassword(const QString& account, bool authernticationError);
     
 public slots:
     void start();
     void stop();
+    
     void newAccountRequest(const QMap<QString, QVariant>& map);
     void modifyAccountRequest(const QString& name, const QMap<QString, QVariant>& map);
     void removeAccountRequest(const QString& name);
     void connectAccount(const QString& account);
     void disconnectAccount(const QString& account);
+    
     void changeState(Shared::Availability state);
+    
     void sendMessage(const QString& account, const Shared::Message& data);
-    void sendMessage(const QString& account, const Shared::Message& data, const QString& path);
+    void replaceMessage(const QString& account, const QString& originalId, const Shared::Message& data);
+    void resendMessage(const QString& account, const QString& jid, const QString& id);
     void requestArchive(const QString& account, const QString& jid, int count, const QString& before);
+    
     void subscribeContact(const QString& account, const QString& jid, const QString& reason);
     void unsubscribeContact(const QString& account, const QString& jid, const QString& reason);
     void addContactToGroupRequest(const QString& account, const QString& jid, const QString& groupName);
@@ -99,15 +112,19 @@ public slots:
     void removeContactRequest(const QString& account, const QString& jid);
     void renameContactRequest(const QString& account, const QString& jid, const QString& newName);
     void addContactRequest(const QString& account, const QString& jid, const QString& name, const QSet<QString>& groups);
+    
     void setRoomJoined(const QString& account, const QString& jid, bool joined);
     void setRoomAutoJoin(const QString& account, const QString& jid, bool joined);
     void addRoomRequest(const QString& account, const QString& jid, const QString& nick, const QString& password, bool autoJoin);
     void removeRoomRequest(const QString& account, const QString& jid);
-    void fileLocalPathRequest(const QString& messageId, const QString& url);
-    void downloadFileRequest(const QString& messageId, const QString& url);
+    
+    void fileDownloadRequest(const QString& url);
+    
     void requestVCard(const QString& account, const QString& jid);
     void uploadVCard(const QString& account, const Shared::VCard& card);
     void responsePassword(const QString& account, const QString& password);
+    void onLocalPathInvalid(const QString& path);
+    void changeDownloadsPath(const QString& path);
     
 private:
     typedef std::deque<Account*> Accounts;
@@ -117,7 +134,7 @@ private:
     AccountsMap amap;
     Shared::Availability state;
     NetworkAccess network;
-    uint8_t waitingForAccounts;
+    bool isInitialized;
 
 #ifdef WITH_KWALLET
     PSE::KWallet kwallet;
@@ -130,6 +147,7 @@ private slots:
         const QString& password, 
         const QString& name, 
         const QString& resource, 
+        bool active,
         Shared::AccountPassword passwordType
     );
     
@@ -146,7 +164,7 @@ private slots:
     void onAccountAddPresence(const QString& jid, const QString& name, const QMap<QString, QVariant>& data);
     void onAccountRemovePresence(const QString& jid, const QString& name);
     void onAccountMessage(const Shared::Message& data);
-    void onAccountResponseArchive(const QString& jid, const std::list<Shared::Message>& list);
+    void onAccountResponseArchive(const QString& jid, const std::list<Shared::Message>& list, bool last);
     void onAccountAddRoom(const QString jid, const QMap<QString, QVariant>& data);
     void onAccountChangeRoom(const QString jid, const QMap<QString, QVariant>& data);
     void onAccountRemoveRoom(const QString jid);
@@ -154,20 +172,22 @@ private slots:
     void onAccountChangeRoomPresence(const QString& jid, const QString& nick, const QMap<QString, QVariant>& data);
     void onAccountRemoveRoomPresence(const QString& jid, const QString& nick);
     void onAccountChangeMessage(const QString& jid, const QString& id, const QMap<QString, QVariant>& data);
+    void onAccountNeedPassword();
+    
+    void onAccountUploadFileError(const QString& jid, const QString id, const QString& errorText);
     
     void onWalletOpened(bool success);
-    void onWalletResponsePassword(const QString& login, const QString& password);
     void onWalletRejectPassword(const QString& login);
     
 private:
     void readSettings();
-    void accountReady();
     void parseAccount(
         const QString& login, 
         const QString& server, 
         const QString& password, 
         const QString& name, 
         const QString& resource, 
+        bool active,
         Shared::AccountPassword passwordType
     );
     

core/storage/CMakeLists.txt

@@ -0,0 +1,8 @@
+target_sources(squawk PRIVATE
+    archive.cpp
+    archive.h
+    storage.cpp
+    storage.h
+    urlstorage.cpp
+    urlstorage.h
+)

core/storage/archive.cpp

@@ -58,15 +58,24 @@ void Core::Archive::open(const QString& account)
         }
         
         mdb_env_set_maxdbs(environment, 5);
-        mdb_env_set_mapsize(environment, 512UL * 1024UL * 1024UL);
+        mdb_env_set_mapsize(environment,
+#ifdef Q_OS_WIN
+                            // On Windows, the file is immediately allocated.
+                            // So we have to limit the size.
+                            80UL * 1024UL * 1024UL
+#else
+                            512UL * 1024UL * 1024UL
+#endif
+        );
         mdb_env_open(environment, path.toStdString().c_str(), 0, 0664);
         
         MDB_txn *txn;
         mdb_txn_begin(environment, NULL, 0, &txn);
         mdb_dbi_open(txn, "main", MDB_CREATE, &main);
-        mdb_dbi_open(txn, "order", MDB_CREATE | MDB_INTEGERKEY, &order);
+        mdb_dbi_open(txn, "order", MDB_CREATE | MDB_INTEGERKEY | MDB_INTEGERDUP | MDB_DUPSORT, &order);
         mdb_dbi_open(txn, "stats", MDB_CREATE, &stats);
         mdb_dbi_open(txn, "avatars", MDB_CREATE, &avatars);
+        mdb_dbi_open(txn, "sid", MDB_CREATE, &sid);
         mdb_txn_commit(txn);
         
         mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
@@ -99,6 +108,7 @@ void Core::Archive::open(const QString& account)
 void Core::Archive::close()
 {
     if (opened) {
+        mdb_dbi_close(environment, sid);
         mdb_dbi_close(environment, avatars);
         mdb_dbi_close(environment, stats);
         mdb_dbi_close(environment, order);
@@ -113,6 +123,7 @@ bool Core::Archive::addElement(const Shared::Message& message)
     if (!opened) {
         throw Closed("addElement", jid.toStdString());
     }
+    qDebug() << "Adding message with id " << message.getId();
     QByteArray ba;
     QDataStream ds(&ba, QIODevice::WriteOnly);
     message.serialize(ds);
@@ -139,12 +150,36 @@ bool Core::Archive::addElement(const Shared::Message& message)
             mdb_txn_abort(txn);
             return false;
         } else {
-            rc = mdb_txn_commit(txn);
-            if (rc) {
-                qDebug() << "A transaction error: " << mdb_strerror(rc);
-                return false;
+            if (message.getStanzaId().size() > 0) {
+                const std::string& szid = message.getStanzaId().toStdString();
+                
+                lmdbKey.mv_size = szid.size();
+                lmdbKey.mv_data = (char*)szid.c_str();
+                lmdbData.mv_size = id.size();
+                lmdbData.mv_data = (uint8_t*)id.data();
+                rc = mdb_put(txn, sid, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
+                
+                if (rc) {
+                    qDebug() << "An element stanzaId to id pair couldn't be inserted into the archive" << mdb_strerror(rc);
+                    mdb_txn_abort(txn);
+                    return false;
+                } else {
+                    rc = mdb_txn_commit(txn);
+                    if (rc) {
+                        qDebug() << "A transaction error: " << mdb_strerror(rc);
+                        return false;
+                    }
+                    return true;
+                }
+                
+            } else {
+                rc = mdb_txn_commit(txn);
+                if (rc) {
+                    qDebug() << "A transaction error: " << mdb_strerror(rc);
+                    return false;
+                }
+                return true;
             }
-            return true;
         }
     } else {
         qDebug() << "An element couldn't been added to the archive, skipping" << mdb_strerror(rc);
@@ -164,10 +199,12 @@ void Core::Archive::clear()
     mdb_drop(txn, main, 0);
     mdb_drop(txn, order, 0);
     mdb_drop(txn, stats, 0);
+    mdb_drop(txn, avatars, 0);
+    mdb_drop(txn, sid, 0);
     mdb_txn_commit(txn);
 }
 
-Shared::Message Core::Archive::getElement(const QString& id)
+Shared::Message Core::Archive::getElement(const QString& id) const
 {
     if (!opened) {
         throw Closed("getElement", jid.toStdString());
@@ -186,7 +223,27 @@ Shared::Message Core::Archive::getElement(const QString& id)
     }
 }
 
-Shared::Message Core::Archive::getMessage(const std::string& id, MDB_txn* txn)
+bool Core::Archive::hasElement(const QString& id) const
+{
+    if (!opened) {
+        throw Closed("hasElement", jid.toStdString());
+    }
+    
+    MDB_txn *txn;
+    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
+    
+    bool has;
+    MDB_val lmdbKey, lmdbData;
+    lmdbKey.mv_size = id.size();
+    lmdbKey.mv_data = (char*)id.toStdString().c_str();
+    int rc = mdb_get(txn, main, &lmdbKey, &lmdbData);
+    has = rc == 0;
+    mdb_txn_abort(txn);
+    
+    return has;
+}
+
+Shared::Message Core::Archive::getMessage(const std::string& id, MDB_txn* txn) const
 {
     MDB_val lmdbKey, lmdbData;
     lmdbKey.mv_size = id.size();
@@ -220,8 +277,11 @@ void Core::Archive::changeMessage(const QString& id, const QMap<QString, QVarian
     std::string strId(id.toStdString());
     try {
         Shared::Message msg = getMessage(strId, txn);
+        bool hadStanzaId = msg.getStanzaId().size() > 0;
         QDateTime oTime = msg.getTime();
         bool idChange = msg.change(data);
+        QDateTime nTime = msg.getTime();
+        bool orderChange = oTime != nTime;
         
         MDB_val lmdbKey, lmdbData;
         QByteArray ba;
@@ -231,15 +291,21 @@ void Core::Archive::changeMessage(const QString& id, const QMap<QString, QVarian
         lmdbKey.mv_size = strId.size();
         lmdbKey.mv_data = (char*)strId.c_str();
         int rc;
-        if (idChange) {
-            rc = mdb_del(txn, main, &lmdbKey, &lmdbData);
+        if (idChange || orderChange) {
+            if (idChange) {
+                rc = mdb_del(txn, main, &lmdbKey, &lmdbData);
+            } else {
+                quint64 ostamp = oTime.toMSecsSinceEpoch();
+                lmdbData.mv_data = (quint8*)&ostamp;
+                lmdbData.mv_size = 8;
+                rc = mdb_del(txn, order, &lmdbData, &lmdbKey);
+            }
             if (rc == 0) {
                 strId = msg.getId().toStdString();
                 lmdbKey.mv_size = strId.size();
                 lmdbKey.mv_data = (char*)strId.c_str();
                 
-                
-                quint64 stamp = oTime.toMSecsSinceEpoch();
+                quint64 stamp = nTime.toMSecsSinceEpoch();
                 lmdbData.mv_data = (quint8*)&stamp;
                 lmdbData.mv_size = 8;
                 rc = mdb_put(txn, order, &lmdbData, &lmdbKey, 0);
@@ -250,6 +316,20 @@ void Core::Archive::changeMessage(const QString& id, const QMap<QString, QVarian
                 throw Unknown(jid.toStdString(), mdb_strerror(rc));
             }
         }
+        
+        QString qsid = msg.getStanzaId();
+        if (qsid.size() > 0 && (idChange || !hadStanzaId)) {
+            std::string szid = qsid.toStdString();
+            
+            lmdbData.mv_size = szid.size();
+            lmdbData.mv_data = (char*)szid.c_str();
+            rc = mdb_put(txn, sid, &lmdbData, &lmdbKey, 0);
+            
+            if (rc != 0) {
+                throw Unknown(jid.toStdString(), mdb_strerror(rc));
+            }
+        };
+        
         lmdbData.mv_size = ba.size();
         lmdbData.mv_data = (uint8_t*)ba.data();
         rc = mdb_put(txn, main, &lmdbKey, &lmdbData, 0);
@@ -395,7 +475,20 @@ unsigned int Core::Archive::addElements(const std::list<Shared::Message>& messag
             if (rc) {
                 qDebug() << "An element couldn't be inserted into the index, aborting the transaction" << mdb_strerror(rc);
             } else {
-                //qDebug() << "element added with id" << message.getId() << "stamp" << message.getTime();
+                if (message.getStanzaId().size() > 0) {
+                    const std::string& szid = message.getStanzaId().toStdString();
+                    
+                    lmdbKey.mv_size = szid.size();
+                    lmdbKey.mv_data = (char*)szid.c_str();
+                    lmdbData.mv_size = id.size();
+                    lmdbData.mv_data = (uint8_t*)id.data();
+                    rc = mdb_put(txn, sid, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
+                    
+                    if (rc) {
+                        qDebug() << "During bulk add an element stanzaId to id pair couldn't be inserted into the archive, continuing without stanzaId" << mdb_strerror(rc);
+                    }
+                    
+                }
                 success++;
             }
         } else {
@@ -427,8 +520,9 @@ long unsigned int Core::Archive::size() const
     mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
     MDB_stat stat;
     mdb_stat(txn, order, &stat);
+    size_t amount = stat.ms_entries;
     mdb_txn_abort(txn);
-    return stat.ms_entries;
+    return amount;
 }
 
 std::list<Shared::Message> Core::Archive::getBefore(int count, const QString& id)
@@ -528,14 +622,54 @@ void Core::Archive::setFromTheBeginning(bool is)
         MDB_txn *txn;
         mdb_txn_begin(environment, NULL, 0, &txn);
         bool success = setStatValue("beginning", is, txn);
-        if (success != 0) {
-            mdb_txn_abort(txn);
-        } else {
+        if (success) {
             mdb_txn_commit(txn);
+        } else {
+            mdb_txn_abort(txn);
         }
     }
 }
 
+QString Core::Archive::idByStanzaId(const QString& stanzaId) const
+{
+    if (!opened) {
+        throw Closed("idByStanzaId", jid.toStdString());
+    }
+    QString id;
+    std::string ssid = stanzaId.toStdString();
+    
+    MDB_txn *txn;
+    MDB_val lmdbKey, lmdbData;
+    lmdbKey.mv_size = ssid.size();
+    lmdbKey.mv_data = (char*)ssid.c_str();
+    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
+    int rc = mdb_get(txn, sid, &lmdbKey, &lmdbData);
+    if (rc == 0) {
+        id = QString::fromStdString(std::string((char*)lmdbData.mv_data, lmdbData.mv_size));
+    }
+    mdb_txn_abort(txn);
+    
+    return id;
+}
+
+QString Core::Archive::stanzaIdById(const QString& id) const
+{
+    if (!opened) {
+        throw Closed("stanzaIdById", jid.toStdString());
+    }
+    
+    try {
+        Shared::Message msg = getElement(id);
+        return msg.getStanzaId();
+    } catch (const NotFound& e) {
+        return QString();
+    } catch (const Empty& e) {
+        return QString();
+    } catch (...) {
+        throw;
+    }
+}
+
 void Core::Archive::printOrder()
 {
     qDebug() << "Printing order";
@@ -817,15 +951,16 @@ void Core::Archive::readAllResourcesAvatars(std::map<QString, AvatarInfo>& data)
     mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
     mdb_cursor_open(txn, avatars, &cursor);
     rc = mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_FIRST);
-    
-    do {
-        std::string sId((char*)lmdbKey.mv_data, lmdbKey.mv_size);
-        QString res(sId.c_str());
-        if (res != jid) {
-            data.emplace(res, AvatarInfo());
-            data[res].deserialize((char*)lmdbData.mv_data, lmdbData.mv_size);
-        }
-    } while (mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_NEXT) == 0);
+    if (rc == 0) {                                                  //the db might be empty yet
+        do {
+            std::string sId((char*)lmdbKey.mv_data, lmdbKey.mv_size);
+            QString res(sId.c_str());
+            if (res != jid) {
+                data.emplace(res, AvatarInfo());
+                data[res].deserialize((char*)lmdbData.mv_data, lmdbData.mv_size);
+            }
+        } while (mdb_cursor_get(cursor, &lmdbKey, &lmdbData, MDB_NEXT) == 0);
+    }
     
     mdb_cursor_close(cursor);
     mdb_txn_abort(txn);

core/storage/archive.h

@@ -25,7 +25,7 @@
 #include <QMimeType>
 
 #include "shared/message.h"
-#include "exception.h"
+#include "shared/exception.h"
 #include <lmdb.h>
 #include <list>
 
@@ -45,7 +45,8 @@ public:
     
     bool addElement(const Shared::Message& message);
     unsigned int addElements(const std::list<Shared::Message>& messages);
-    Shared::Message getElement(const QString& id);
+    Shared::Message getElement(const QString& id) const;
+    bool hasElement(const QString& id) const;
     void changeMessage(const QString& id, const QMap<QString, QVariant>& data);
     Shared::Message oldest();
     QString oldestId();
@@ -60,6 +61,8 @@ public:
     AvatarInfo getAvatarInfo(const QString& resource = "") const;
     bool readAvatarInfo(AvatarInfo& target, const QString& resource = "") const;
     void readAllResourcesAvatars(std::map<QString, AvatarInfo>& data) const;
+    QString idByStanzaId(const QString& stanzaId) const;
+    QString stanzaIdById(const QString& id) const;
     
 public:
     const QString jid;
@@ -169,10 +172,11 @@ private:
     bool opened;
     bool fromTheBeginning;
     MDB_env* environment;
-    MDB_dbi main;
-    MDB_dbi order;
+    MDB_dbi main;           //id to message
+    MDB_dbi order;          //time to id
     MDB_dbi stats;
-    MDB_dbi avatars;
+    MDB_dbi avatars;        
+    MDB_dbi sid;            //stanzaId to id
     
     bool getStatBoolValue(const std::string& id, MDB_txn* txn);
     std::string getStatStringValue(const std::string& id, MDB_txn* txn);
@@ -183,7 +187,7 @@ private:
     void printOrder();
     void printKeys();
     bool dropAvatar(const std::string& resource);
-    Shared::Message getMessage(const std::string& id, MDB_txn* txn);
+    Shared::Message getMessage(const std::string& id, MDB_txn* txn) const;
     Shared::Message getStoredMessage(MDB_txn *txn, MDB_cursor* cursor, MDB_cursor_op op, MDB_val* key, MDB_val* value, int& rc);
     Shared::Message edge(bool end);
 };

core/storage/urlstorage.cpp

@@ -0,0 +1,491 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019 Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QStandardPaths>
+#include <QDir>
+#include <QDebug>
+
+#include "urlstorage.h"
+
+Core::UrlStorage::UrlStorage(const QString& p_name):
+    name(p_name),
+    opened(false),
+    environment(),
+    base(),
+    map()
+{
+}
+
+Core::UrlStorage::~UrlStorage()
+{
+    close();
+}
+
+void Core::UrlStorage::open()
+{
+    if (!opened) {
+        mdb_env_create(&environment);
+        QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
+        path += "/" + name;
+        QDir cache(path);
+        
+        if (!cache.exists()) {
+            bool res = cache.mkpath(path);
+            if (!res) {
+                throw Archive::Directory(path.toStdString());
+            }
+        }
+        
+        mdb_env_set_maxdbs(environment, 2);
+        mdb_env_set_mapsize(environment, 10UL * 1024UL * 1024UL);
+        mdb_env_open(environment, path.toStdString().c_str(), 0, 0664);
+        
+        MDB_txn *txn;
+        mdb_txn_begin(environment, NULL, 0, &txn);
+        mdb_dbi_open(txn, "base", MDB_CREATE, &base);
+        mdb_dbi_open(txn, "map", MDB_CREATE, &map);
+        mdb_txn_commit(txn);
+        opened = true;
+    }
+}
+
+void Core::UrlStorage::close()
+{
+    if (opened) {
+        mdb_dbi_close(environment, map);
+        mdb_dbi_close(environment, base);
+        mdb_env_close(environment);
+        opened = false;
+    }
+}
+
+void Core::UrlStorage::writeInfo(const QString& key, const Core::UrlStorage::UrlInfo& info, bool overwrite)
+{
+    MDB_txn *txn;
+    mdb_txn_begin(environment, NULL, 0, &txn);
+    
+    try {
+        writeInfo(key, info, txn, overwrite);
+        mdb_txn_commit(txn);
+    } catch (...) {
+        mdb_txn_abort(txn);
+        throw;
+    }
+}
+
+void Core::UrlStorage::writeInfo(const QString& key, const Core::UrlStorage::UrlInfo& info, MDB_txn* txn, bool overwrite)
+{
+    QByteArray ba;
+    QDataStream ds(&ba, QIODevice::WriteOnly);
+    info.serialize(ds);
+    
+    const std::string& id = key.toStdString();
+    MDB_val lmdbKey, lmdbData;
+    lmdbKey.mv_size = id.size();
+    lmdbKey.mv_data = (char*)id.c_str();
+    lmdbData.mv_size = ba.size();
+    lmdbData.mv_data = (uint8_t*)ba.data();
+    
+    int rc;
+    rc = mdb_put(txn, base, &lmdbKey, &lmdbData, overwrite ? 0 : MDB_NOOVERWRITE);
+    
+    if (rc != 0) {
+        if (rc == MDB_KEYEXIST) {
+            if (!overwrite) {
+                throw Archive::Exist(name.toStdString(), id);
+            }
+        } else {
+            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
+        }
+    }
+    
+    if (info.hasPath()) {
+        std::string sp = info.getPath().toStdString();
+        lmdbData.mv_size = sp.size();
+        lmdbData.mv_data = (char*)sp.c_str();
+        rc = mdb_put(txn, map, &lmdbData, &lmdbKey, 0);
+        if (rc != 0) {
+            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
+        }
+    }
+}
+
+void Core::UrlStorage::readInfo(const QString& key, Core::UrlStorage::UrlInfo& info, MDB_txn* txn)
+{
+    const std::string& id = key.toStdString();
+    MDB_val lmdbKey, lmdbData;
+    lmdbKey.mv_size = id.size();
+    lmdbKey.mv_data = (char*)id.c_str();
+    int rc = mdb_get(txn, base, &lmdbKey, &lmdbData);
+    
+    if (rc == 0) {
+        QByteArray ba((char*)lmdbData.mv_data, lmdbData.mv_size);
+        QDataStream ds(&ba, QIODevice::ReadOnly);
+        
+        info.deserialize(ds);
+    } else if (rc == MDB_NOTFOUND) {
+        throw Archive::NotFound(id, name.toStdString());
+    } else {
+        throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
+    }
+}
+
+void Core::UrlStorage::readInfo(const QString& key, Core::UrlStorage::UrlInfo& info)
+{
+    MDB_txn *txn;
+    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
+    
+    try {
+        readInfo(key, info, txn);
+        mdb_txn_commit(txn);
+    } catch (...) {
+        mdb_txn_abort(txn);
+        throw;
+    }
+}
+
+void Core::UrlStorage::addFile(const QString& url)
+{
+    if (!opened) {
+        throw Archive::Closed("addFile(no message, no path)", name.toStdString());
+    }
+    
+    addToInfo(url, "", "", "");
+}
+
+void Core::UrlStorage::addFile(const QString& url, const QString& path)
+{
+    if (!opened) {
+        throw Archive::Closed("addFile(no message, with path)", name.toStdString());
+    }
+    
+    addToInfo(url, "", "", "", path);
+}
+
+void Core::UrlStorage::addFile(const QString& url, const QString& account, const QString& jid, const QString& id)
+{
+    if (!opened) {
+        throw Archive::Closed("addFile(with message, no path)", name.toStdString());
+    }
+    
+    addToInfo(url, account, jid, id);
+}
+
+void Core::UrlStorage::addFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id)
+{
+    if (!opened) {
+        throw Archive::Closed("addFile(with message, with path)", name.toStdString());
+    }
+    
+    addToInfo(url, account, jid, id, path);
+}
+
+void Core::UrlStorage::addFile(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path)
+{
+    if (!opened) {
+        throw Archive::Closed("addFile(with list)", name.toStdString());
+    }
+    
+    UrlInfo info (path, msgs);
+    writeInfo(url, info, true);;
+}
+
+QString Core::UrlStorage::addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id)
+{
+    if (!opened) {
+        throw Archive::Closed("addMessageAndCheckForPath", name.toStdString());
+    }
+    
+    return addToInfo(url, account, jid, id).getPath();
+}
+
+Core::UrlStorage::UrlInfo Core::UrlStorage::addToInfo(const QString& url, const QString& account, const QString& jid, const QString& id, const QString& path)
+{
+    UrlInfo info;
+    MDB_txn *txn;
+    mdb_txn_begin(environment, NULL, 0, &txn);
+    
+    try {
+        readInfo(url, info, txn);
+    } catch (const Archive::NotFound& e) {
+        
+    } catch (...) {
+        mdb_txn_abort(txn);
+        throw;
+    }
+    
+    bool pathChange = false;
+    bool listChange = false;
+    if (path != "-s") {
+        if (info.getPath() != path) {
+            info.setPath(path);
+            pathChange = true;
+        }
+    }
+    
+    if (account.size() > 0 && jid.size() > 0 && id.size() > 0) {
+        listChange = info.addMessage(account, jid, id);
+    }
+    
+    if (pathChange || listChange) {
+        try {
+            writeInfo(url, info, txn, true);
+            mdb_txn_commit(txn);
+        } catch (...) {
+            mdb_txn_abort(txn);
+            throw;
+        }
+    } else {
+        mdb_txn_abort(txn);
+    }
+    
+    return info;
+}
+
+std::list<Shared::MessageInfo> Core::UrlStorage::setPath(const QString& url, const QString& path)
+{
+    std::list<Shared::MessageInfo> list;
+    
+    MDB_txn *txn;
+    mdb_txn_begin(environment, NULL, 0, &txn);
+    UrlInfo info;
+    
+    try {
+        readInfo(url, info, txn);
+        info.getMessages(list);
+    } catch (const Archive::NotFound& e) {
+    } catch (...) {
+        mdb_txn_abort(txn);
+        throw;
+    }
+    
+    info.setPath(path);
+    try {
+        writeInfo(url, info, txn, true);
+        mdb_txn_commit(txn);
+    } catch (...) {
+        mdb_txn_abort(txn);
+        throw;
+    }
+    
+    return list;
+}
+
+std::list<Shared::MessageInfo> Core::UrlStorage::removeFile(const QString& url)
+{
+    std::list<Shared::MessageInfo> list;
+    
+    MDB_txn *txn;
+    mdb_txn_begin(environment, NULL, 0, &txn);
+    UrlInfo info;
+    
+    try {
+        std::string id = url.toStdString();
+        readInfo(url, info, txn);
+        info.getMessages(list);
+        
+        MDB_val lmdbKey;
+        lmdbKey.mv_size = id.size();
+        lmdbKey.mv_data = (char*)id.c_str();
+        int rc = mdb_del(txn, base, &lmdbKey, NULL);
+        if (rc != 0) {
+            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
+        }
+        
+        if (info.hasPath()) {
+            std::string path = info.getPath().toStdString();
+            lmdbKey.mv_size = path.size();
+            lmdbKey.mv_data = (char*)path.c_str();
+            
+            int rc = mdb_del(txn, map, &lmdbKey, NULL);
+            if (rc != 0) {
+                throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
+            }
+        }
+        mdb_txn_commit(txn);
+    } catch (...) {
+        mdb_txn_abort(txn);
+        throw;
+    }
+    
+    return list;
+}
+
+std::list<Shared::MessageInfo> Core::UrlStorage::deletedFile(const QString& path)
+{
+    std::list<Shared::MessageInfo> list;
+    
+    MDB_txn *txn;
+    mdb_txn_begin(environment, NULL, 0, &txn);
+    
+    try {
+        std::string spath = path.toStdString();
+        
+        MDB_val lmdbKey, lmdbData;
+        lmdbKey.mv_size = spath.size();
+        lmdbKey.mv_data = (char*)spath.c_str();
+        
+        QString url;
+        int rc = mdb_get(txn, map, &lmdbKey, &lmdbData);
+        
+        if (rc == 0) {
+            std::string surl((char*)lmdbData.mv_data, lmdbData.mv_size);
+            url = QString(surl.c_str());
+        } else if (rc == MDB_NOTFOUND) {
+            qDebug() << "Have been asked to remove file" << path << ", which isn't in the database, skipping";
+            mdb_txn_abort(txn);
+            return list;
+        } else {
+            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
+        }
+        
+        UrlInfo info;
+        std::string id = url.toStdString();
+        readInfo(url, info, txn);
+        info.getMessages(list);
+        info.setPath(QString());
+        writeInfo(url, info, txn, true);
+        
+        rc = mdb_del(txn, map, &lmdbKey, NULL);
+        if (rc != 0) {
+            throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
+        }
+        
+        mdb_txn_commit(txn);
+    } catch (...) {
+        mdb_txn_abort(txn);
+        throw;
+    }
+    
+    return list;
+}
+
+
+QString Core::UrlStorage::getUrl(const QString& path)
+{
+    std::list<Shared::MessageInfo> list;
+    
+    MDB_txn *txn;
+    mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
+    
+    std::string spath = path.toStdString();
+    
+    MDB_val lmdbKey, lmdbData;
+    lmdbKey.mv_size = spath.size();
+    lmdbKey.mv_data = (char*)spath.c_str();
+    
+    QString url;
+    int rc = mdb_get(txn, map, &lmdbKey, &lmdbData);
+    
+    if (rc == 0) {
+        std::string surl((char*)lmdbData.mv_data, lmdbData.mv_size);
+        url = QString(surl.c_str());
+        
+        mdb_txn_abort(txn);
+        return url;
+    } else if (rc == MDB_NOTFOUND) {
+        mdb_txn_abort(txn);
+        throw Archive::NotFound(spath, name.toStdString());
+    } else {
+        mdb_txn_abort(txn);
+        throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
+    }
+}
+
+std::pair<QString, std::list<Shared::MessageInfo>> Core::UrlStorage::getPath(const QString& url)
+{
+    UrlInfo info;
+    readInfo(url, info);
+    std::list<Shared::MessageInfo> container;
+    info.getMessages(container);
+    return std::make_pair(info.getPath(), container);
+}
+
+Core::UrlStorage::UrlInfo::UrlInfo():
+    localPath(),
+    messages() {}
+
+Core::UrlStorage::UrlInfo::UrlInfo(const QString& path):
+    localPath(path),
+    messages() {}
+ 
+Core::UrlStorage::UrlInfo::UrlInfo(const QString& path, const std::list<Shared::MessageInfo>& msgs):
+    localPath(path),
+    messages(msgs) {}
+ 
+Core::UrlStorage::UrlInfo::~UrlInfo() {}
+ 
+bool Core::UrlStorage::UrlInfo::addMessage(const QString& acc, const QString& jid, const QString& id)
+{
+    for (const Shared::MessageInfo& info : messages) {
+        if (info.account == acc && info.jid == jid && info.messageId == id) {
+            return false;
+        }
+    }
+    messages.emplace_back(acc, jid, id);
+    return true;
+}
+
+void Core::UrlStorage::UrlInfo::serialize(QDataStream& data) const
+{
+    data << localPath;
+    std::list<Shared::MessageInfo>::size_type size = messages.size();
+    data << quint32(size);
+    for (const Shared::MessageInfo& info : messages) {
+        data << info.account;
+        data << info.jid;
+        data << info.messageId;
+    }
+}
+
+void Core::UrlStorage::UrlInfo::deserialize(QDataStream& data)
+{
+    data >> localPath;
+    quint32 size;
+    data >> size;
+    for (quint32 i = 0; i < size; ++i) {
+        messages.emplace_back();
+        Shared::MessageInfo& info = messages.back();
+        data >> info.account;
+        data >> info.jid;
+        data >> info.messageId;
+    }
+}
+
+void Core::UrlStorage::UrlInfo::getMessages(std::list<Shared::MessageInfo>& container) const
+{
+    for (const Shared::MessageInfo& info : messages) {
+        container.emplace_back(info);
+    }
+}
+
+QString Core::UrlStorage::UrlInfo::getPath() const
+{
+    return localPath;
+}
+
+bool Core::UrlStorage::UrlInfo::hasPath() const
+{
+    return localPath.size() > 0;
+}
+
+
+void Core::UrlStorage::UrlInfo::setPath(const QString& path)
+{
+    localPath = path;
+}

core/storage/urlstorage.h

@@ -0,0 +1,99 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019 Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CORE_URLSTORAGE_H
+#define CORE_URLSTORAGE_H
+
+#include <QString>
+#include <QDataStream>
+#include <lmdb.h>
+#include <list>
+
+#include "archive.h"
+#include <shared/messageinfo.h>
+
+namespace Core {
+
+/**
+ * @todo write docs
+ */
+class UrlStorage
+{
+    class UrlInfo;
+public:
+    UrlStorage(const QString& name);
+    ~UrlStorage();
+    
+    void open();
+    void close();
+    
+    void addFile(const QString& url);
+    void addFile(const QString& url, const QString& path);
+    void addFile(const QString& url, const QString& account, const QString& jid, const QString& id);
+    void addFile(const QString& url, const QString& path, const QString& account, const QString& jid, const QString& id);
+    void addFile(const std::list<Shared::MessageInfo>& msgs, const QString& url, const QString& path);      //this one overwrites all that was
+    std::list<Shared::MessageInfo> removeFile(const QString& url);      //removes entry like it never was in the database, returns affected message infos
+    std::list<Shared::MessageInfo> deletedFile(const QString& path);    //empties the localPath of the entry, returns affected message infos
+    std::list<Shared::MessageInfo> setPath(const QString& url, const QString& path);
+    QString getUrl(const QString& path);
+    QString addMessageAndCheckForPath(const QString& url, const QString& account, const QString& jid, const QString& id);
+    std::pair<QString, std::list<Shared::MessageInfo>> getPath(const QString& url);
+    
+private:
+    QString name;
+    bool opened;
+    MDB_env* environment;
+    MDB_dbi base;
+    MDB_dbi map;
+    
+private:
+    void writeInfo(const QString& key, const UrlInfo& info, bool overwrite = false);
+    void writeInfo(const QString& key, const UrlInfo& info, MDB_txn* txn, bool overwrite = false);
+    void readInfo(const QString& key, UrlInfo& info);
+    void readInfo(const QString& key, UrlInfo& info, MDB_txn* txn);
+    UrlInfo addToInfo(const QString& url, const QString& account, const QString& jid, const QString& id, const QString& path = "-s");
+    
+private:
+    class UrlInfo {
+    public:
+        UrlInfo(const QString& path);
+        UrlInfo(const QString& path, const std::list<Shared::MessageInfo>& msgs);
+        UrlInfo();
+        ~UrlInfo();
+        
+        void serialize(QDataStream& data) const;
+        void deserialize(QDataStream& data);
+        
+        QString getPath() const;
+        bool hasPath() const;
+        void setPath(const QString& path);
+        
+        bool addMessage(const QString& acc, const QString& jid, const QString& id);
+        void getMessages(std::list<Shared::MessageInfo>& container) const;
+        
+    private:
+        QString localPath;
+        std::list<Shared::MessageInfo> messages;
+    };
+    
+    
+};
+
+}
+
+#endif // CORE_URLSTORAGE_H

external/qxmpp

@@ -1 +1 @@
-Subproject commit 067c7743b1c72d055a749a7611efd2f9026fe784
+Subproject commit fe83e9c3d42c3becf682e2b5ecfc9d77b24c614f

external/simpleCrypt/CMakeLists.txt

@@ -1,16 +1,10 @@
 cmake_minimum_required(VERSION 3.0)
-project(simplecrypt)
+project(simplecrypt LANGUAGES CXX)
 
 set(CMAKE_AUTOMOC ON)
 
-find_package(Qt5Core CONFIG REQUIRED)
+find_package(Qt5 COMPONENTS Core REQUIRED)
 
-set(simplecrypt_SRC
-    simplecrypt.cpp
-)
+add_library(simpleCrypt STATIC simplecrypt.cpp simplecrypt.h)
 
-# Tell CMake to create the helloworld executable
-add_library(simpleCrypt ${simplecrypt_SRC})
-
-# Use the Widgets module from Qt 5.
 target_link_libraries(simpleCrypt Qt5::Core)

external/simpleCrypt/simplecrypt.cpp

@@ -36,10 +36,7 @@ SimpleCrypt::SimpleCrypt():
 m_key(0),
 m_compressionMode(CompressionAuto),
 m_protectionMode(ProtectionChecksum),
-m_lastError(ErrorNoError)
-{
-    qsrand(uint(QDateTime::currentMSecsSinceEpoch() & 0xFFFF));
-}
+m_lastError(ErrorNoError) {}
 
 SimpleCrypt::SimpleCrypt(quint64 key):
 m_key(key),
@@ -47,7 +44,6 @@ m_compressionMode(CompressionAuto),
 m_protectionMode(ProtectionChecksum),
 m_lastError(ErrorNoError)
 {
-    qsrand(uint(QDateTime::currentMSecsSinceEpoch() & 0xFFFF));
     splitKey();
 }
 
@@ -113,7 +109,7 @@ QByteArray SimpleCrypt::encryptToByteArray(QByteArray plaintext)
     }
     
     //prepend a random char to the string
-    char randomChar = char(qrand() & 0xFF);
+    char randomChar = char(QRandomGenerator::global()->generate() & 0xFF);
     ba = randomChar + integrityProtection + ba;
     
     int pos(0);

external/simpleCrypt/simplecrypt.h

@@ -30,6 +30,7 @@
 #include <QString>
 #include <QVector>
 #include <QFlags>
+#include <QRandomGenerator>
 
 /**
  @ short Simple encrypt*ion and decryption of strings and byte arrays

main.cpp

@@ -1,163 +0,0 @@
-/*
- * Squawk messenger. 
- * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "ui/squawk.h"
-#include "core/squawk.h"
-#include "signalcatcher.h"
-#include "shared/global.h"
-#include <QtWidgets/QApplication>
-#include <QtCore/QThread>
-#include <QtCore/QObject>
-#include <QSettings>
-#include <QTranslator>
-#include <QLibraryInfo>
-#include <QStandardPaths>
-
-int main(int argc, char *argv[])
-{
-    qRegisterMetaType<Shared::Message>("Shared::Message");
-    qRegisterMetaType<Shared::VCard>("Shared::VCard");
-    qRegisterMetaType<std::list<Shared::Message>>("std::list<Shared::Message>");
-    qRegisterMetaType<QSet<QString>>("QSet<QString>");
-    qRegisterMetaType<Shared::ConnectionState>("Shared::ConnectionState");
-    qRegisterMetaType<Shared::Availability>("Shared::Availability");
-    
-    QApplication app(argc, argv);
-    SignalCatcher sc(&app);
-    
-    QApplication::setApplicationName("squawk");
-    QApplication::setApplicationDisplayName("Squawk");
-    QApplication::setApplicationVersion("0.1.4");
-    
-    QTranslator qtTranslator;
-    qtTranslator.load("qt_" + QLocale::system().name(), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
-    app.installTranslator(&qtTranslator);
-    
-    QTranslator myappTranslator;
-    QStringList shares = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
-    bool found = false;
-    for (QString share : shares) {
-        found = myappTranslator.load(QLocale(), QLatin1String("squawk"), ".", share + "/l10n");
-        if (found) {
-            break;
-        }
-    }
-    if (!found) {
-        myappTranslator.load(QLocale(), QLatin1String("squawk"), ".", QCoreApplication::applicationDirPath());
-    }
-    
-    app.installTranslator(&myappTranslator);
-    
-    QIcon icon;
-    icon.addFile(":images/logo.svg", QSize(16, 16));
-    icon.addFile(":images/logo.svg", QSize(24, 24));
-    icon.addFile(":images/logo.svg", QSize(32, 32));
-    icon.addFile(":images/logo.svg", QSize(48, 48));
-    icon.addFile(":images/logo.svg", QSize(64, 64));
-    icon.addFile(":images/logo.svg", QSize(96, 96));
-    icon.addFile(":images/logo.svg", QSize(128, 128));
-    icon.addFile(":images/logo.svg", QSize(256, 256));
-    icon.addFile(":images/logo.svg", QSize(512, 512));
-    QApplication::setWindowIcon(icon);
-    
-    new Shared::Global();        //translates enums
-    
-    Squawk w;
-    w.show();
-    
-    Core::Squawk* squawk = new Core::Squawk();
-    QThread* coreThread = new QThread();
-    squawk->moveToThread(coreThread);
-    
-    QObject::connect(coreThread, &QThread::started, squawk, &Core::Squawk::start);
-    QObject::connect(&app, &QApplication::aboutToQuit, squawk, &Core::Squawk::stop);
-    QObject::connect(&app, &QApplication::aboutToQuit, &w, &QMainWindow::close);
-    QObject::connect(squawk, &Core::Squawk::quit, coreThread, &QThread::quit);
-    QObject::connect(coreThread, &QThread::finished, squawk, &Core::Squawk::deleteLater);
-    
-    QObject::connect(&w, &Squawk::newAccountRequest, squawk, &Core::Squawk::newAccountRequest);
-    QObject::connect(&w, &Squawk::modifyAccountRequest, squawk, &Core::Squawk::modifyAccountRequest);
-    QObject::connect(&w, &Squawk::removeAccountRequest, squawk, &Core::Squawk::removeAccountRequest);
-    QObject::connect(&w, &Squawk::connectAccount, squawk, &Core::Squawk::connectAccount);
-    QObject::connect(&w, &Squawk::disconnectAccount, squawk, &Core::Squawk::disconnectAccount);
-    QObject::connect(&w, &Squawk::changeState, squawk, &Core::Squawk::changeState);
-    QObject::connect(&w, qOverload<const QString&, const Shared::Message&>(&Squawk::sendMessage), 
-                     squawk, qOverload<const QString&, const Shared::Message&>(&Core::Squawk::sendMessage));
-    QObject::connect(&w, qOverload<const QString&, const Shared::Message&, const QString&>(&Squawk::sendMessage), 
-                     squawk, qOverload<const QString&, const Shared::Message&, const QString&>(&Core::Squawk::sendMessage));
-    QObject::connect(&w, &Squawk::requestArchive, squawk, &Core::Squawk::requestArchive);
-    QObject::connect(&w, &Squawk::subscribeContact, squawk, &Core::Squawk::subscribeContact);
-    QObject::connect(&w, &Squawk::unsubscribeContact, squawk, &Core::Squawk::unsubscribeContact);
-    QObject::connect(&w, &Squawk::addContactRequest, squawk, &Core::Squawk::addContactRequest);
-    QObject::connect(&w, &Squawk::removeContactRequest, squawk, &Core::Squawk::removeContactRequest);
-    QObject::connect(&w, &Squawk::setRoomJoined, squawk, &Core::Squawk::setRoomJoined);
-    QObject::connect(&w, &Squawk::setRoomAutoJoin, squawk, &Core::Squawk::setRoomAutoJoin);
-    QObject::connect(&w, &Squawk::removeRoomRequest, squawk, &Core::Squawk::removeRoomRequest);
-    QObject::connect(&w, &Squawk::addRoomRequest, squawk, &Core::Squawk::addRoomRequest);
-    QObject::connect(&w, &Squawk::fileLocalPathRequest, squawk, &Core::Squawk::fileLocalPathRequest);
-    QObject::connect(&w, &Squawk::downloadFileRequest, squawk, &Core::Squawk::downloadFileRequest);
-    QObject::connect(&w, &Squawk::addContactToGroupRequest, squawk, &Core::Squawk::addContactToGroupRequest);
-    QObject::connect(&w, &Squawk::removeContactFromGroupRequest, squawk, &Core::Squawk::removeContactFromGroupRequest);
-    QObject::connect(&w, &Squawk::renameContactRequest, squawk, &Core::Squawk::renameContactRequest);
-    QObject::connect(&w, &Squawk::requestVCard, squawk, &Core::Squawk::requestVCard);
-    QObject::connect(&w, &Squawk::uploadVCard, squawk, &Core::Squawk::uploadVCard);
-    QObject::connect(&w, &Squawk::responsePassword, squawk, &Core::Squawk::responsePassword);
-    
-    QObject::connect(squawk, &Core::Squawk::newAccount, &w, &Squawk::newAccount);
-    QObject::connect(squawk, &Core::Squawk::addContact, &w, &Squawk::addContact);
-    QObject::connect(squawk, &Core::Squawk::changeAccount, &w, &Squawk::changeAccount);
-    QObject::connect(squawk, &Core::Squawk::removeAccount, &w, &Squawk::removeAccount);
-    QObject::connect(squawk, &Core::Squawk::addGroup, &w, &Squawk::addGroup);
-    QObject::connect(squawk, &Core::Squawk::removeGroup, &w, &Squawk::removeGroup);
-    QObject::connect(squawk, qOverload<const QString&, const QString&>(&Core::Squawk::removeContact), 
-                     &w, qOverload<const QString&, const QString&>(&Squawk::removeContact));
-    QObject::connect(squawk, qOverload<const QString&, const QString&, const QString&>(&Core::Squawk::removeContact), 
-                     &w, qOverload<const QString&, const QString&, const QString&>(&Squawk::removeContact));
-    QObject::connect(squawk, &Core::Squawk::changeContact, &w, &Squawk::changeContact);
-    QObject::connect(squawk, &Core::Squawk::addPresence, &w, &Squawk::addPresence);
-    QObject::connect(squawk, &Core::Squawk::removePresence, &w, &Squawk::removePresence);
-    QObject::connect(squawk, &Core::Squawk::stateChanged, &w, &Squawk::stateChanged);
-    QObject::connect(squawk, &Core::Squawk::accountMessage, &w, &Squawk::accountMessage);
-    QObject::connect(squawk, &Core::Squawk::changeMessage, &w, &Squawk::changeMessage);
-    QObject::connect(squawk, &Core::Squawk::responseArchive, &w, &Squawk::responseArchive);
-    QObject::connect(squawk, &Core::Squawk::addRoom, &w, &Squawk::addRoom);
-    QObject::connect(squawk, &Core::Squawk::changeRoom, &w, &Squawk::changeRoom);
-    QObject::connect(squawk, &Core::Squawk::removeRoom, &w, &Squawk::removeRoom);
-    QObject::connect(squawk, &Core::Squawk::addRoomParticipant, &w, &Squawk::addRoomParticipant);
-    QObject::connect(squawk, &Core::Squawk::changeRoomParticipant, &w, &Squawk::changeRoomParticipant);
-    QObject::connect(squawk, &Core::Squawk::removeRoomParticipant, &w, &Squawk::removeRoomParticipant);
-    QObject::connect(squawk, &Core::Squawk::fileLocalPathResponse, &w, &Squawk::fileLocalPathResponse);
-    QObject::connect(squawk, &Core::Squawk::downloadFileProgress, &w, &Squawk::fileProgress);
-    QObject::connect(squawk, &Core::Squawk::downloadFileError, &w, &Squawk::fileError);
-    QObject::connect(squawk, &Core::Squawk::uploadFileProgress, &w, &Squawk::fileProgress);
-    QObject::connect(squawk, &Core::Squawk::uploadFileError, &w, &Squawk::fileError);
-    QObject::connect(squawk, &Core::Squawk::responseVCard, &w, &Squawk::responseVCard);
-    QObject::connect(squawk, &Core::Squawk::requestPassword, &w, &Squawk::requestPassword);
-    QObject::connect(squawk, &Core::Squawk::ready, &w, &Squawk::readSettings);
-    
-    coreThread->start();
-
-    int result = app.exec();
-    
-    w.writeSettings();
-    coreThread->wait(500);      //TODO hate doing that but settings for some reason don't get saved to the disk
-    
-    
-    return result;
-}
-

main/CMakeLists.txt

@@ -0,0 +1,7 @@
+target_sources(squawk PRIVATE
+    main.cpp
+    application.cpp
+    application.h
+    dialogqueue.cpp
+    dialogqueue.h
+)

main/application.cpp

@@ -0,0 +1,566 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "application.h"
+
+Application::Application(Core::Squawk* p_core):
+    QObject(),
+    availability(Shared::Availability::offline),
+    core(p_core),
+    squawk(nullptr),
+    notifications("org.freedesktop.Notifications", "/org/freedesktop/Notifications", "org.freedesktop.Notifications"),
+    roster(),
+    conversations(),
+    dialogueQueue(roster),
+    nowQuitting(false),
+    destroyingSquawk(false),
+    storage()
+{
+    connect(&roster, &Models::Roster::unnoticedMessage, this, &Application::notify);
+    connect(&roster, &Models::Roster::unreadMessagesCountChanged, this, &Application::unreadMessagesCountChanged);
+
+
+    //connecting myself to the backed
+    connect(this, &Application::changeState, core, &Core::Squawk::changeState);
+    connect(this, &Application::setRoomJoined, core, &Core::Squawk::setRoomJoined);
+    connect(this, &Application::setRoomAutoJoin, core, &Core::Squawk::setRoomAutoJoin);
+    connect(this, &Application::subscribeContact, core, &Core::Squawk::subscribeContact);
+    connect(this, &Application::unsubscribeContact, core, &Core::Squawk::unsubscribeContact);
+    connect(this, &Application::replaceMessage, core, &Core::Squawk::replaceMessage);
+    connect(this, &Application::sendMessage, core, &Core::Squawk::sendMessage);
+    connect(this, &Application::resendMessage, core, &Core::Squawk::resendMessage);
+    connect(&roster, &Models::Roster::requestArchive,
+            std::bind(&Core::Squawk::requestArchive, core, std::placeholders::_1, std::placeholders::_2, 20, std::placeholders::_3));
+
+    connect(&dialogueQueue, &DialogQueue::modifyAccountRequest, core, &Core::Squawk::modifyAccountRequest);
+    connect(&dialogueQueue, &DialogQueue::responsePassword, core, &Core::Squawk::responsePassword);
+    connect(&dialogueQueue, &DialogQueue::disconnectAccount, core, &Core::Squawk::disconnectAccount);
+
+    connect(&roster, &Models::Roster::fileDownloadRequest, core, &Core::Squawk::fileDownloadRequest);
+    connect(&roster, &Models::Roster::localPathInvalid, core, &Core::Squawk::onLocalPathInvalid);
+
+
+    //coonecting backend to myself
+    connect(core, &Core::Squawk::stateChanged, this, &Application::stateChanged);
+
+    connect(core, &Core::Squawk::accountMessage, &roster, &Models::Roster::addMessage);
+    connect(core, &Core::Squawk::responseArchive, &roster, &Models::Roster::responseArchive);
+    connect(core, &Core::Squawk::changeMessage, &roster, &Models::Roster::changeMessage);
+
+    connect(core, &Core::Squawk::newAccount, &roster, &Models::Roster::addAccount);
+    connect(core, &Core::Squawk::changeAccount, this, &Application::changeAccount);
+    connect(core, &Core::Squawk::removeAccount, this, &Application::removeAccount);
+
+    connect(core, &Core::Squawk::addContact, this, &Application::addContact);
+    connect(core, &Core::Squawk::addGroup, this, &Application::addGroup);
+    connect(core, &Core::Squawk::removeGroup, &roster, &Models::Roster::removeGroup);
+    connect(core, qOverload<const QString&, const QString&>(&Core::Squawk::removeContact),
+            &roster, qOverload<const QString&, const QString&>(&Models::Roster::removeContact));
+    connect(core, qOverload<const QString&, const QString&, const QString&>(&Core::Squawk::removeContact),
+            &roster, qOverload<const QString&, const QString&, const QString&>(&Models::Roster::removeContact));
+    connect(core, &Core::Squawk::changeContact, &roster, &Models::Roster::changeContact);
+    connect(core, &Core::Squawk::addPresence, &roster, &Models::Roster::addPresence);
+    connect(core, &Core::Squawk::removePresence, &roster, &Models::Roster::removePresence);
+
+    connect(core, &Core::Squawk::addRoom, &roster, &Models::Roster::addRoom);
+    connect(core, &Core::Squawk::changeRoom, &roster, &Models::Roster::changeRoom);
+    connect(core, &Core::Squawk::removeRoom, &roster, &Models::Roster::removeRoom);
+    connect(core, &Core::Squawk::addRoomParticipant, &roster, &Models::Roster::addRoomParticipant);
+    connect(core, &Core::Squawk::changeRoomParticipant, &roster, &Models::Roster::changeRoomParticipant);
+    connect(core, &Core::Squawk::removeRoomParticipant, &roster, &Models::Roster::removeRoomParticipant);
+
+
+    connect(core, &Core::Squawk::fileDownloadComplete, std::bind(&Models::Roster::fileComplete, &roster, std::placeholders::_1, false));
+    connect(core, &Core::Squawk::fileUploadComplete, std::bind(&Models::Roster::fileComplete, &roster, std::placeholders::_1, true));
+    connect(core, &Core::Squawk::fileProgress, &roster, &Models::Roster::fileProgress);
+    connect(core, &Core::Squawk::fileError, &roster, &Models::Roster::fileError);
+
+    connect(core, &Core::Squawk::requestPassword, this, &Application::requestPassword);
+    connect(core, &Core::Squawk::ready, this, &Application::readSettings);
+
+    QDBusConnection sys = QDBusConnection::sessionBus();
+    sys.connect(
+        "org.freedesktop.Notifications",
+        "/org/freedesktop/Notifications",
+        "org.freedesktop.Notifications",
+        "NotificationClosed",
+        this,
+        SLOT(onNotificationClosed(quint32, quint32))
+    );
+    sys.connect(
+        "org.freedesktop.Notifications",
+        "/org/freedesktop/Notifications",
+        "org.freedesktop.Notifications",
+        "ActionInvoked",
+        this,
+        SLOT(onNotificationInvoked(quint32, const QString&))
+    );
+}
+
+Application::~Application() {}
+
+void Application::quit()
+{
+    if (!nowQuitting) {
+        nowQuitting = true;
+        emit quitting();
+
+        writeSettings();
+        unreadMessagesCountChanged(0);      //this notification persist in the desktop, for now I'll zero it on quit not to confuse people
+        for (Conversations::const_iterator itr = conversations.begin(), end = conversations.end(); itr != end; ++itr) {
+            disconnect(itr->second, &Conversation::destroyed, this, &Application::onConversationClosed);
+            itr->second->close();
+        }
+        conversations.clear();
+        dialogueQueue.quit();
+
+        if (squawk != nullptr) {
+            squawk->close();
+        }
+        if (!destroyingSquawk) {
+            checkForTheLastWindow();
+        }
+    }
+}
+
+void Application::checkForTheLastWindow()
+{
+    if (QApplication::topLevelWidgets().size() > 0) {
+        emit readyToQuit();
+    } else {
+        connect(qApp, &QApplication::lastWindowClosed, this, &Application::readyToQuit);
+    }
+}
+
+void Application::createMainWindow()
+{
+    if (squawk == nullptr) {
+        squawk = new Squawk(roster);
+
+        connect(squawk, &Squawk::notify, this, &Application::notify);
+        connect(squawk, &Squawk::changeSubscription, this, &Application::changeSubscription);
+        connect(squawk, &Squawk::openedConversation, this, &Application::onSquawkOpenedConversation);
+        connect(squawk, &Squawk::openConversation, this, &Application::openConversation);
+        connect(squawk, &Squawk::changeState, this, &Application::setState);
+        connect(squawk, &Squawk::closing, this, &Application::onSquawkClosing);
+
+        connect(squawk, &Squawk::modifyAccountRequest, core, &Core::Squawk::modifyAccountRequest);
+        connect(squawk, &Squawk::newAccountRequest, core, &Core::Squawk::newAccountRequest);
+        connect(squawk, &Squawk::removeAccountRequest, core, &Core::Squawk::removeAccountRequest);
+        connect(squawk, &Squawk::connectAccount, core, &Core::Squawk::connectAccount);
+        connect(squawk, &Squawk::disconnectAccount, core, &Core::Squawk::disconnectAccount);
+
+        connect(squawk, &Squawk::addContactRequest, core, &Core::Squawk::addContactRequest);
+        connect(squawk, &Squawk::removeContactRequest, core, &Core::Squawk::removeContactRequest);
+        connect(squawk, &Squawk::removeRoomRequest, core, &Core::Squawk::removeRoomRequest);
+        connect(squawk, &Squawk::addRoomRequest, core, &Core::Squawk::addRoomRequest);
+        connect(squawk, &Squawk::addContactToGroupRequest, core, &Core::Squawk::addContactToGroupRequest);
+        connect(squawk, &Squawk::removeContactFromGroupRequest, core, &Core::Squawk::removeContactFromGroupRequest);
+        connect(squawk, &Squawk::renameContactRequest, core, &Core::Squawk::renameContactRequest);
+        connect(squawk, &Squawk::requestVCard, core, &Core::Squawk::requestVCard);
+        connect(squawk, &Squawk::uploadVCard, core, &Core::Squawk::uploadVCard);
+        connect(squawk, &Squawk::changeDownloadsPath, core, &Core::Squawk::changeDownloadsPath);
+
+        connect(core, &Core::Squawk::responseVCard, squawk, &Squawk::responseVCard);
+
+        dialogueQueue.setParentWidnow(squawk);
+        squawk->stateChanged(availability);
+        squawk->show();
+    }
+}
+
+void Application::onSquawkClosing()
+{
+    dialogueQueue.setParentWidnow(nullptr);
+
+    if (!nowQuitting) {
+        disconnect(core, &Core::Squawk::responseVCard, squawk, &Squawk::responseVCard);
+    }
+
+    destroyingSquawk = true;
+    squawk->deleteLater();
+    squawk = nullptr;
+
+    //for now
+    quit();
+}
+
+void Application::onSquawkDestroyed() {
+    destroyingSquawk = false;
+    if (nowQuitting) {
+        checkForTheLastWindow();
+    }
+}
+
+
+void Application::notify(const QString& account, const Shared::Message& msg)
+{
+    QString jid = msg.getPenPalJid();
+    QString name = QString(roster.getContactName(account, jid));
+    QString path = QString(roster.getContactIconPath(account, jid, msg.getPenPalResource()));
+    QVariantList args;
+    args << QString();
+
+    uint32_t notificationId = qHash(msg.getId());
+    args << notificationId;
+    if (path.size() > 0) {
+        args << path;
+    } else {
+        args << QString("mail-message");    //TODO should here better be unknown user icon?
+    }
+    if (msg.getType() == Shared::Message::groupChat) {
+        args << msg.getFromResource() + tr(" from ") + name;
+    } else {
+        args << name;
+    }
+
+    QString body(msg.getBody());
+    QString oob(msg.getOutOfBandUrl());
+    if (body == oob) {
+        body = tr("Attached file");
+    }
+
+    args << body;
+    args << QStringList({
+        "markAsRead", tr("Mark as Read"),
+        "openConversation", tr("Open conversation")
+    });
+    args << QVariantMap({
+        {"desktop-entry", qApp->desktopFileName()},
+        {"category", QString("message")},
+        {"urgency", 1},
+       // {"sound-file", "/path/to/macaw/squawk"},
+        {"sound-name", QString("message-new-instant")}
+    });
+    args << -1;
+    notifications.callWithArgumentList(QDBus::AutoDetect, "Notify", args);
+
+    storage.insert(std::make_pair(notificationId, std::make_pair(Models::Roster::ElId(account, name), msg.getId())));
+
+    if (squawk != nullptr) {
+        QApplication::alert(squawk);
+    }
+}
+
+void Application::onNotificationClosed(quint32 id, quint32 reason)
+{
+    Notifications::const_iterator itr = storage.find(id);
+    if (itr != storage.end()) {
+        if (reason == 2) {  //dissmissed by user (https://specifications.freedesktop.org/notification-spec/latest/ar01s09.html)
+            //TODO may ba also mark as read?
+        }
+        if (reason != 1) {  //just expired, can be activated again from history, so no removing for now
+            storage.erase(id);
+            qDebug() << "Notification" << id << "was closed";
+        }
+    }
+}
+
+void Application::onNotificationInvoked(quint32 id, const QString& action)
+{
+    qDebug() << "Notification" << id << action << "request";
+    Notifications::const_iterator itr = storage.find(id);
+    if (itr != storage.end()) {
+        if (action == "markAsRead") {
+            roster.markMessageAsRead(itr->second.first, itr->second.second);
+        } else if (action == "openConversation") {
+            focusConversation(itr->second.first, "", itr->second.second);
+        }
+    }
+}
+
+void Application::unreadMessagesCountChanged(int count)
+{
+    QDBusMessage signal = QDBusMessage::createSignal("/", "com.canonical.Unity.LauncherEntry", "Update");
+    signal << qApp->desktopFileName() + QLatin1String(".desktop");
+    signal << QVariantMap ({
+        {"count-visible", count != 0},
+        {"count", count}
+    });
+    QDBusConnection::sessionBus().send(signal);
+}
+
+void Application::focusConversation(const Models::Roster::ElId& id, const QString& resource, const QString& messageId)
+{
+    if (squawk != nullptr) {
+        if (squawk->currentConversationId() != id) {
+            QModelIndex index = roster.getContactIndex(id.account, id.name, resource);
+            squawk->select(index);
+        }
+
+        if (squawk->isMinimized()) {
+            squawk->showNormal();
+        } else {
+            squawk->show();
+        }
+        squawk->raise();
+        squawk->activateWindow();
+    } else {
+        openConversation(id, resource);
+    }
+
+    //TODO focus messageId;
+}
+
+void Application::setState(Shared::Availability p_availability)
+{
+    if (availability != p_availability) {
+        availability = p_availability;
+        emit changeState(availability);
+    }
+}
+
+void Application::stateChanged(Shared::Availability state)
+{
+    availability = state;
+    if (squawk != nullptr) {
+        squawk->stateChanged(state);
+    }
+}
+
+void Application::readSettings()
+{
+    QSettings settings;
+    settings.beginGroup("ui");
+    int avail;
+    if (settings.contains("availability")) {
+        avail = settings.value("availability").toInt();
+    } else {
+        avail = static_cast<int>(Shared::Availability::online);
+    }
+    settings.endGroup();
+
+    setState(Shared::Global::fromInt<Shared::Availability>(avail));
+    createMainWindow();
+}
+
+void Application::writeSettings()
+{
+    QSettings settings;
+    settings.setValue("availability", static_cast<int>(availability));
+}
+
+void Application::requestPassword(const QString& account, bool authenticationError) {
+    if (authenticationError) {
+        dialogueQueue.addAction(account, DialogQueue::askCredentials);
+    } else {
+        dialogueQueue.addAction(account, DialogQueue::askPassword);
+    }
+
+}
+void Application::onConversationClosed()
+{
+    Conversation* conv = static_cast<Conversation*>(sender());
+    Models::Roster::ElId id(conv->getAccount(), conv->getJid());
+    Conversations::const_iterator itr = conversations.find(id);
+    if (itr != conversations.end()) {
+        conversations.erase(itr);
+    }
+    if (conv->isMuc) {
+        Room* room = static_cast<Room*>(conv);
+        if (!room->autoJoined()) {
+            emit setRoomJoined(id.account, id.name, false);
+        }
+    }
+}
+
+void Application::changeSubscription(const Models::Roster::ElId& id, bool subscribe)
+{
+    Models::Item::Type type = roster.getContactType(id);
+
+    switch (type) {
+        case Models::Item::contact:
+            if (subscribe) {
+                emit subscribeContact(id.account, id.name, "");
+            } else {
+                emit unsubscribeContact(id.account, id.name, "");
+            }
+            break;
+        case Models::Item::room:
+            setRoomAutoJoin(id.account, id.name, subscribe);
+            if (!isConverstationOpened(id)) {
+                emit setRoomJoined(id.account, id.name, subscribe);
+            }
+            break;
+        default:
+            break;
+    }
+}
+
+void Application::subscribeConversation(Conversation* conv)
+{
+    connect(conv, &Conversation::destroyed, this, &Application::onConversationClosed);
+    connect(conv, &Conversation::sendMessage, this, &Application::onConversationMessage);
+    connect(conv, &Conversation::replaceMessage, this, &Application::onConversationReplaceMessage);
+    connect(conv, &Conversation::resendMessage, this, &Application::onConversationResend);
+    connect(conv, &Conversation::notifyableMessage, this, &Application::notify);
+}
+
+void Application::openConversation(const Models::Roster::ElId& id, const QString& resource)
+{
+    Conversations::const_iterator itr = conversations.find(id);
+    Models::Account* acc = roster.getAccount(id.account);
+    Conversation* conv = nullptr;
+    bool created = false;
+    if (itr != conversations.end()) {
+        conv = itr->second;
+    } else {
+        Models::Element* el = roster.getElement(id);
+        if (el != nullptr) {
+            if (el->type == Models::Item::room) {
+                created = true;
+                Models::Room* room = static_cast<Models::Room*>(el);
+                conv = new Room(acc, room);
+                if (!room->getJoined()) {
+                    emit setRoomJoined(id.account, id.name, true);
+                }
+            } else if (el->type == Models::Item::contact) {
+                created = true;
+                conv = new Chat(acc, static_cast<Models::Contact*>(el));
+            }
+        }
+    }
+
+    if (conv != nullptr) {
+        if (created) {
+            conv->setAttribute(Qt::WA_DeleteOnClose);
+            subscribeConversation(conv);
+            conversations.insert(std::make_pair(id, conv));
+        }
+
+        conv->show();
+        conv->raise();
+        conv->activateWindow();
+
+        if (resource.size() > 0) {
+            conv->setPalResource(resource);
+        }
+    }
+}
+
+void Application::onConversationMessage(const Shared::Message& msg)
+{
+    Conversation* conv = static_cast<Conversation*>(sender());
+    QString acc = conv->getAccount();
+
+    roster.addMessage(acc, msg);
+    emit sendMessage(acc, msg);
+}
+
+void Application::onConversationReplaceMessage(const QString& originalId, const Shared::Message& msg)
+{
+    Conversation* conv = static_cast<Conversation*>(sender());
+    QString acc = conv->getAccount();
+
+    roster.changeMessage(acc, msg.getPenPalJid(), originalId, {
+        {"state", static_cast<uint>(Shared::Message::State::pending)}
+    });
+    emit replaceMessage(acc, originalId, msg);
+}
+
+void Application::onConversationResend(const QString& id)
+{
+    Conversation* conv = static_cast<Conversation*>(sender());
+    QString acc = conv->getAccount();
+    QString jid = conv->getJid();
+
+    emit resendMessage(acc, jid, id);
+}
+
+void Application::onSquawkOpenedConversation() {
+    subscribeConversation(squawk->currentConversation);
+    Models::Roster::ElId id = squawk->currentConversationId();
+
+    const Models::Element* el = roster.getElementConst(id);
+    if (el != nullptr && el->isRoom() && !static_cast<const Models::Room*>(el)->getJoined()) {
+        emit setRoomJoined(id.account, id.name, true);
+    }
+}
+
+void Application::removeAccount(const QString& account)
+{
+    Conversations::const_iterator itr = conversations.begin();
+    while (itr != conversations.end()) {
+        if (itr->first.account == account) {
+            Conversations::const_iterator lItr = itr;
+            ++itr;
+            Conversation* conv = lItr->second;
+            disconnect(conv, &Conversation::destroyed, this, &Application::onConversationClosed);
+            conv->close();
+            conversations.erase(lItr);
+        } else {
+            ++itr;
+        }
+    }
+
+    if (squawk != nullptr && squawk->currentConversationId().account == account) {
+        squawk->closeCurrentConversation();
+    }
+
+    roster.removeAccount(account);
+}
+
+void Application::changeAccount(const QString& account, const QMap<QString, QVariant>& data)
+{
+    for (QMap<QString, QVariant>::const_iterator itr = data.begin(), end = data.end(); itr != end; ++itr) {
+        QString attr = itr.key();
+        roster.updateAccount(account, attr, *itr);
+    }
+}
+
+void Application::addContact(const QString& account, const QString& jid, const QString& group, const QMap<QString, QVariant>& data)
+{
+    roster.addContact(account, jid, group, data);
+
+    if (squawk != nullptr) {
+        QSettings settings;
+        settings.beginGroup("ui");
+        settings.beginGroup("roster");
+        settings.beginGroup(account);
+        if (settings.value("expanded", false).toBool()) {
+            QModelIndex ind = roster.getAccountIndex(account);
+            squawk->expand(ind);
+        }
+        settings.endGroup();
+        settings.endGroup();
+        settings.endGroup();
+    }
+}
+
+void Application::addGroup(const QString& account, const QString& name)
+{
+    roster.addGroup(account, name);
+
+    if (squawk != nullptr) {
+        QSettings settings;
+        settings.beginGroup("ui");
+        settings.beginGroup("roster");
+        settings.beginGroup(account);
+        if (settings.value("expanded", false).toBool()) {
+            QModelIndex ind = roster.getAccountIndex(account);
+            squawk->expand(ind);
+            if (settings.value(name + "/expanded", false).toBool()) {
+                squawk->expand(roster.getGroupIndex(account, name));
+            }
+        }
+        settings.endGroup();
+        settings.endGroup();
+        settings.endGroup();
+    }
+}
+
+bool Application::isConverstationOpened(const Models::Roster::ElId& id) const {
+    return (conversations.count(id) > 0) || (squawk != nullptr && squawk->currentConversationId() == id);}

main/application.h

@@ -0,0 +1,118 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef APPLICATION_H
+#define APPLICATION_H
+
+#include <map>
+
+#include <QObject>
+#include <QDBusInterface>
+
+#include "dialogqueue.h"
+#include "core/squawk.h"
+
+#include "ui/squawk.h"
+#include "ui/models/roster.h"
+#include "ui/widgets/conversation.h"
+
+#include "shared/message.h"
+#include "shared/enums.h"
+
+/**
+ * @todo write docs
+ */
+class Application : public QObject
+{
+    Q_OBJECT
+public:
+    Application(Core::Squawk* core);
+    ~Application();
+
+    bool isConverstationOpened(const Models::Roster::ElId& id) const;
+
+signals:
+    void sendMessage(const QString& account, const Shared::Message& data);
+    void replaceMessage(const QString& account, const QString& originalId, const Shared::Message& data);
+    void resendMessage(const QString& account, const QString& jid, const QString& id);
+
+    void changeState(Shared::Availability state);
+
+    void setRoomJoined(const QString& account, const QString& jid, bool joined);
+    void setRoomAutoJoin(const QString& account, const QString& jid, bool joined);
+    void subscribeContact(const QString& account, const QString& jid, const QString& reason);
+    void unsubscribeContact(const QString& account, const QString& jid, const QString& reason);
+
+    void quitting();
+    void readyToQuit();
+
+public slots:
+    void readSettings();
+    void quit();
+
+protected slots:
+    void notify(const QString& account, const Shared::Message& msg);
+    void unreadMessagesCountChanged(int count);
+    void setState(Shared::Availability availability);
+
+    void changeAccount(const QString& account, const QMap<QString, QVariant>& data);
+    void removeAccount(const QString& account);
+    void openConversation(const Models::Roster::ElId& id, const QString& resource = "");
+
+    void addGroup(const QString& account, const QString& name);
+    void addContact(const QString& account, const QString& jid, const QString& group, const QMap<QString, QVariant>& data);
+
+    void requestPassword(const QString& account, bool authenticationError);
+
+    void writeSettings();
+
+private slots:
+    void onConversationClosed();
+    void changeSubscription(const Models::Roster::ElId& id, bool subscribe);
+    void onSquawkOpenedConversation();
+    void onConversationMessage(const Shared::Message& msg);
+    void onConversationReplaceMessage(const QString& originalId, const Shared::Message& msg);
+    void onConversationResend(const QString& id);
+    void stateChanged(Shared::Availability state);
+    void onSquawkClosing();
+    void onSquawkDestroyed();
+    void onNotificationClosed(quint32 id, quint32 reason);
+    void onNotificationInvoked(quint32 id, const QString& action);
+
+
+private:
+    void createMainWindow();
+    void subscribeConversation(Conversation* conv);
+    void checkForTheLastWindow();
+    void focusConversation(const Models::Roster::ElId& id, const QString& resource = "", const QString& messageId = "");
+
+private:
+    typedef std::map<Models::Roster::ElId, Conversation*> Conversations;
+    typedef std::map<uint32_t, std::pair<Models::Roster::ElId, QString>> Notifications;
+
+    Shared::Availability availability;
+    Core::Squawk* core;
+    Squawk* squawk;
+    QDBusInterface notifications;
+    Models::Roster roster;
+    Conversations conversations;
+    DialogQueue dialogueQueue;
+    bool nowQuitting;
+    bool destroyingSquawk;
+    Notifications storage;
+};
+
+#endif // APPLICATION_H

main/dialogqueue.cpp

@@ -0,0 +1,187 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "dialogqueue.h"
+#include <QDebug>
+
+DialogQueue::DialogQueue(const Models::Roster& p_roster):
+    QObject(),
+    currentSource(),
+    currentAction(none),
+    queue(),
+    collection(queue.get<0>()),
+    sequence(queue.get<1>()),
+    prompt(nullptr),
+    parent(nullptr),
+    roster(p_roster)
+{
+}
+
+DialogQueue::~DialogQueue()
+{
+}
+
+void DialogQueue::quit()
+{
+    queue.clear();
+    if (currentAction != none) {
+        actionDone();
+    }
+}
+
+void DialogQueue::setParentWidnow(QMainWindow* p_parent)
+{
+    parent = p_parent;
+}
+
+bool DialogQueue::addAction(const QString& source, DialogQueue::Action action)
+{
+    if (action == none) {
+        return false;
+    }
+    if (currentAction == none) {
+        currentAction = action;
+        currentSource = source;
+        performNextAction();
+        return true;
+    } else {
+        if (currentAction != action || currentSource != source) {
+            std::pair<Queue::iterator, bool> result = queue.emplace(source, action);
+            return result.second;
+        } else {
+            return false;
+        }
+    }
+}
+
+bool DialogQueue::cancelAction(const QString& source, DialogQueue::Action action)
+{
+    if (source == currentSource && action == currentAction) {
+        actionDone();
+        return true;
+    } else {
+        Collection::iterator itr = collection.find(ActionId{source, action});
+        if (itr != collection.end()) {
+            collection.erase(itr);
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
+
+void DialogQueue::performNextAction()
+{
+    switch (currentAction) {
+        case none:
+            actionDone();
+            break;
+        case askPassword: {
+            QInputDialog* dialog = new QInputDialog(parent);
+            prompt = dialog;
+            connect(dialog, &QDialog::accepted, this, &DialogQueue::onPropmtAccepted);
+            connect(dialog, &QDialog::rejected, this, &DialogQueue::onPropmtRejected);
+            dialog->setInputMode(QInputDialog::TextInput);
+            dialog->setTextEchoMode(QLineEdit::Password);
+            dialog->setLabelText(tr("Input the password for account %1").arg(currentSource));
+            dialog->setWindowTitle(tr("Password for account %1").arg(currentSource));
+            dialog->setTextValue("");
+            dialog->exec();
+        }
+            break;
+        case askCredentials: {
+            CredentialsPrompt* dialog = new CredentialsPrompt(parent);
+            prompt = dialog;
+            connect(dialog, &QDialog::accepted, this, &DialogQueue::onPropmtAccepted);
+            connect(dialog, &QDialog::rejected, this, &DialogQueue::onPropmtRejected);
+            const Models::Account* acc = roster.getAccountConst(currentSource);
+            dialog->setAccount(currentSource);
+            dialog->setLogin(acc->getLogin());
+            dialog->setPassword(acc->getPassword());
+            dialog->exec();
+        }
+            break;
+    }
+}
+
+void DialogQueue::onPropmtAccepted()
+{
+    switch (currentAction) {
+        case none:
+            break;
+        case askPassword: {
+            QInputDialog* dialog = static_cast<QInputDialog*>(prompt);
+            emit responsePassword(currentSource, dialog->textValue());
+        }
+            break;
+        case askCredentials: {
+            CredentialsPrompt* dialog = static_cast<CredentialsPrompt*>(prompt);
+            emit modifyAccountRequest(currentSource, {
+                {"login", dialog->getLogin()},
+                {"password", dialog->getPassword()}
+            });
+        }
+            break;
+    }
+    actionDone();
+}
+
+void DialogQueue::onPropmtRejected()
+{
+    switch (currentAction) {
+        case none:
+            break;
+        case askPassword:
+        case askCredentials:
+            emit disconnectAccount(currentSource);
+            break;
+    }
+    actionDone();
+}
+
+void DialogQueue::actionDone()
+{
+    prompt->deleteLater();
+    prompt = nullptr;
+
+    if (queue.empty()) {
+        currentAction = none;
+        currentSource = "";
+    } else {
+        Sequence::iterator itr = sequence.begin();
+        currentAction = itr->action;
+        currentSource = itr->source;
+        sequence.erase(itr);
+        performNextAction();
+    }
+}
+
+DialogQueue::ActionId::ActionId(const QString& p_source, DialogQueue::Action p_action):
+    source(p_source),
+    action(p_action) {}
+
+bool DialogQueue::ActionId::operator < (const DialogQueue::ActionId& other) const
+{
+    if (action == other.action) {
+        return source < other.source;
+    } else {
+        return action < other.action;
+    }
+}
+
+DialogQueue::ActionId::ActionId(const DialogQueue::ActionId& other):
+    source(other.source),
+    action(other.action) {}

main/dialogqueue.h

@@ -0,0 +1,101 @@
+// Squawk messenger.
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef DIALOGQUEUE_H
+#define DIALOGQUEUE_H
+
+#include <QObject>
+#include <QInputDialog>
+#include <QMainWindow>
+
+#include <boost/multi_index_container.hpp>
+#include <boost/multi_index/ordered_index.hpp>
+#include <boost/multi_index/sequenced_index.hpp>
+
+#include <ui/widgets/accounts/credentialsprompt.h>
+#include <ui/models/roster.h>
+
+class DialogQueue : public QObject
+{
+    Q_OBJECT
+public:
+    enum Action {
+        none,
+        askPassword,
+        askCredentials
+    };
+
+    DialogQueue(const Models::Roster& roster);
+    ~DialogQueue();
+
+    bool addAction(const QString& source, Action action);
+    bool cancelAction(const QString& source, Action action);
+
+signals:
+    void modifyAccountRequest(const QString&, const QMap<QString, QVariant>&);
+    void responsePassword(const QString& account, const QString& password);
+    void disconnectAccount(const QString&);
+
+public:
+    void setParentWidnow(QMainWindow* parent);
+    void quit();
+
+private:
+    void performNextAction();
+    void actionDone();
+
+private slots:
+    void onPropmtAccepted();
+    void onPropmtRejected();
+
+private:
+    QString currentSource;
+    Action currentAction;
+
+    struct ActionId {
+    public:
+        ActionId(const QString& p_source, Action p_action);
+        ActionId(const ActionId& other);
+
+        const QString source;
+        const Action action;
+
+        bool operator < (const ActionId& other) const;
+    };
+
+    typedef boost::multi_index_container <
+        ActionId,
+        boost::multi_index::indexed_by <
+            boost::multi_index::ordered_unique <
+                boost::multi_index::identity <ActionId>
+            >,
+            boost::multi_index::sequenced<>
+        >
+    > Queue;
+
+    typedef Queue::nth_index<0>::type Collection;
+    typedef Queue::nth_index<1>::type Sequence;
+
+    Queue queue;
+    Collection& collection;
+    Sequence& sequence;
+
+    QDialog* prompt;
+    QMainWindow* parent;
+    const Models::Roster& roster;
+};
+
+#endif // DIALOGQUEUE_H

main/main.cpp

@@ -0,0 +1,140 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "shared/global.h"
+#include "shared/messageinfo.h"
+#include "shared/pathcheck.h"
+#include "main/application.h"
+#include "core/signalcatcher.h"
+#include "core/squawk.h"
+
+#include <QLibraryInfo>
+#include <QSettings>
+#include <QStandardPaths>
+#include <QTranslator>
+#include <QtCore/QObject>
+#include <QtCore/QThread>
+#include <QtWidgets/QApplication>
+#include <QDir>
+
+int main(int argc, char *argv[])
+{
+    qRegisterMetaType<Shared::Message>("Shared::Message");
+    qRegisterMetaType<Shared::MessageInfo>("Shared::MessageInfo");
+    qRegisterMetaType<Shared::VCard>("Shared::VCard");
+    qRegisterMetaType<std::list<Shared::Message>>("std::list<Shared::Message>");
+    qRegisterMetaType<std::list<Shared::MessageInfo>>("std::list<Shared::MessageInfo>");
+    qRegisterMetaType<QSet<QString>>("QSet<QString>");
+    qRegisterMetaType<Shared::ConnectionState>("Shared::ConnectionState");
+    qRegisterMetaType<Shared::Availability>("Shared::Availability");
+    
+    QApplication app(argc, argv);
+    SignalCatcher sc(&app);
+
+    QApplication::setApplicationName("squawk");
+    QApplication::setOrganizationName("macaw.me");
+    QApplication::setApplicationDisplayName("Squawk");
+    QApplication::setApplicationVersion("0.2.2");
+    app.setDesktopFileName("squawk");
+
+    QTranslator qtTranslator;
+    qtTranslator.load("qt_" + QLocale::system().name(), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
+    app.installTranslator(&qtTranslator);
+
+    QTranslator myappTranslator;
+    QStringList shares = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
+    bool found = false;
+    for (QString share : shares) {
+        found = myappTranslator.load(QLocale(), QLatin1String("squawk"), ".", share + "/l10n");
+        if (found) {
+            break;
+        }
+    }
+    if (!found) {
+        myappTranslator.load(QLocale(), QLatin1String("squawk"), ".", QCoreApplication::applicationDirPath());
+    }
+    
+    app.installTranslator(&myappTranslator);
+    
+    QIcon icon;
+    icon.addFile(":images/logo.svg", QSize(16, 16));
+    icon.addFile(":images/logo.svg", QSize(24, 24));
+    icon.addFile(":images/logo.svg", QSize(32, 32));
+    icon.addFile(":images/logo.svg", QSize(48, 48));
+    icon.addFile(":images/logo.svg", QSize(64, 64));
+    icon.addFile(":images/logo.svg", QSize(96, 96));
+    icon.addFile(":images/logo.svg", QSize(128, 128));
+    icon.addFile(":images/logo.svg", QSize(256, 256));
+    icon.addFile(":images/logo.svg", QSize(512, 512));
+    QApplication::setWindowIcon(icon);
+    
+    new Shared::Global();        //translates enums
+
+    QSettings settings;
+    QVariant vs = settings.value("style");
+    if (vs.isValid()) {
+        QString style = vs.toString().toLower();
+        if (style != "system") {
+            Shared::Global::setStyle(style);
+        }
+    }
+    if (Shared::Global::supported("colorSchemeTools")) {
+        QVariant vt = settings.value("theme");
+        if (vt.isValid()) {
+            QString theme = vt.toString();
+            if (theme.toLower() != "system") {
+                Shared::Global::setTheme(theme);
+            }
+        }
+    }
+    QString path = Shared::downloadsPathCheck();
+    if (path.size() > 0) {
+        settings.setValue("downloadsPath", path);
+    } else {
+        qDebug() << "couldn't initialize directory for downloads, quitting";
+        return -1;
+    }
+    
+    Core::Squawk* squawk = new Core::Squawk();
+    QThread* coreThread = new QThread();
+    squawk->moveToThread(coreThread);
+    
+    Application application(squawk);
+
+    QObject::connect(&sc, &SignalCatcher::interrupt, &application, &Application::quit);
+
+    QObject::connect(coreThread, &QThread::started, squawk, &Core::Squawk::start);
+    QObject::connect(&application, &Application::quitting, squawk, &Core::Squawk::stop);
+    //QObject::connect(&app, &QApplication::aboutToQuit, &w, &QMainWindow::close);
+    QObject::connect(squawk, &Core::Squawk::quit, squawk, &Core::Squawk::deleteLater);
+    QObject::connect(squawk, &Core::Squawk::destroyed, coreThread, &QThread::quit, Qt::QueuedConnection);
+    QObject::connect(coreThread, &QThread::finished, &app, &QApplication::quit, Qt::QueuedConnection);
+    
+    coreThread->start();
+    int result = app.exec();
+
+    if (coreThread->isRunning()) {
+        //coreThread->wait();
+        //todo if I uncomment that, the app will not quit if it has reconnected at least once
+        //it feels like a symptom of something badly desinged in the core thread
+        //need to investigate;
+    }
+    
+    return result;
+}
+

packaging/Archlinux/PKGBUILD

@@ -1,17 +1,20 @@
 # Maintainer: Yury Gubich <blue@macaw.me>
 pkgname=squawk
-pkgver=0.1.4
+pkgver=0.2.2
 pkgrel=1
 pkgdesc="An XMPP desktop messenger, written on pure c++ (qt)"
 arch=('i686' 'x86_64')
 url="https://git.macaw.me/blue/squawk"
 license=('GPL3')
 depends=('hicolor-icon-theme' 'desktop-file-utils' 'lmdb' 'qxmpp>=1.1.0')
-makedepends=('cmake>=3.3' 'imagemagick' 'qt5-tools')
-optdepends=('kwallet: secure password storage (requires rebuild)')
+makedepends=('cmake>=3.3' 'imagemagick' 'qt5-tools' 'boost')
+optdepends=('kwallet: secure password storage (requires rebuild)'
+            'kconfig: system themes support (requires rebuild)'
+            'kconfigwidgets: system themes support (requires rebuild)'
+            'kio: better show in folder action (requires rebuild)')
 
 source=("$pkgname-$pkgver.tar.gz")
-sha256sums=('3b290381eaf15a35d24a58a36c29eee375a4ea77b606124982a063d7ecf98870')
+sha256sums=('e4fa2174a3ba95159cc3b0bac3f00550c9e0ce971c55334e2662696a4543fc7e')
 build() {
         cd "$srcdir/squawk"
         cmake . -D CMAKE_INSTALL_PREFIX=/usr -D CMAKE_BUILD_TYPE=Release
@@ -19,5 +22,5 @@ build() {
 }
 package() {
         cd "$srcdir/squawk"
-        DESTDIR="$pkgdir/" cmake --build . --target install 
+        DESTDIR="$pkgdir/" cmake --build . --target install
 }

packaging/CMakeLists.txt

@@ -0,0 +1,3 @@
+configure_file(squawk.desktop squawk.desktop COPYONLY)
+
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk.desktop DESTINATION ${CMAKE_INSTALL_DATADIR}/applications)

packaging/squawk.desktop

@@ -5,8 +5,10 @@ Version=1.0
 Name=Squawk
 GenericName=Instant Messenger
 GenericName[ru]=Мгновенные сообщения
+GenericName[pt_BR]=Mensageiro instantâneo
 Comment=XMPP (Jabber) instant messenger client
 Comment[ru]=XMPP (Jabber) клиент обмена мгновенными сообщениями
+Comment[pt_BR]=Cliente de mensagem instantânea XMPP (Jabber)
 Exec=squawk %u
 Icon=squawk
 StartupNotify=true

plugins/CMakeLists.txt

@@ -0,0 +1,14 @@
+if (WITH_KIO)
+  add_library(openFileManagerWindowJob SHARED openfilemanagerwindowjob.cpp)
+  target_link_libraries(openFileManagerWindowJob PRIVATE KF5::KIOWidgets)
+
+  install(TARGETS openFileManagerWindowJob LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
+endif ()
+
+if (WITH_KCONFIG)
+  add_library(colorSchemeTools SHARED colorschemetools.cpp)
+  target_link_libraries(colorSchemeTools PRIVATE KF5::ConfigCore)
+  target_link_libraries(colorSchemeTools PRIVATE KF5::ConfigWidgets)
+
+  install(TARGETS colorSchemeTools LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
+endif()

plugins/colorschemetools.cpp

@@ -0,0 +1,70 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QIcon>
+#include <QPainter>
+#include <QFileInfo>
+
+#include <KConfigCore/KSharedConfig>
+#include <KConfigCore/KConfigGroup>
+#include <KConfigWidgets/KColorScheme>
+
+QPixmap createPixmap(int size, const QBrush& window, const QBrush& button, const QBrush& view, const QBrush& selection);
+
+extern "C" QIcon* createPreview(const QString& path) {
+    KSharedConfigPtr schemeConfig = KSharedConfig::openConfig(path);
+    QIcon* result = new QIcon();
+    KColorScheme activeWindow(QPalette::Active, KColorScheme::Window, schemeConfig);
+    KColorScheme activeButton(QPalette::Active, KColorScheme::Button, schemeConfig);
+    KColorScheme activeView(QPalette::Active, KColorScheme::View, schemeConfig);
+    KColorScheme activeSelection(QPalette::Active, KColorScheme::Selection, schemeConfig);
+
+    result->addPixmap(createPixmap(16, activeWindow.background(), activeButton.background(), activeView.background(), activeSelection.background()));
+    result->addPixmap(createPixmap(24, activeWindow.background(), activeButton.background(), activeView.background(), activeSelection.background()));
+
+    return result;
+}
+
+extern "C" void deletePreview(QIcon* icon) {
+    delete icon;
+}
+
+extern "C" void colorSchemeName(const QString& path, QString& answer) {
+    KSharedConfigPtr config = KSharedConfig::openConfig(path);
+    KConfigGroup group(config, QStringLiteral("General"));
+    answer = group.readEntry("Name", QFileInfo(path).baseName());
+}
+
+extern "C" void createPalette(const QString& path, QPalette& answer) {
+    KSharedConfigPtr config = KSharedConfig::openConfig(path);
+    answer = KColorScheme::createApplicationPalette(config);
+}
+
+QPixmap createPixmap(int size, const QBrush& window, const QBrush& button, const QBrush& view, const QBrush& selection) {
+    QPixmap pix(size, size);
+    pix.fill(Qt::black);
+    QPainter p;
+    p.begin(&pix);
+    const int itemSize = size / 2 - 1;
+    p.fillRect(1, 1, itemSize, itemSize, window);
+    p.fillRect(1 + itemSize, 1, itemSize, itemSize, button);
+    p.fillRect(1, 1 + itemSize, itemSize, itemSize, view);
+    p.fillRect(1 + itemSize, 1 + itemSize, itemSize, itemSize, selection);
+    p.end();
+    return pix;
+}

plugins/openfilemanagerwindowjob.cpp

@@ -0,0 +1,26 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QUrl>
+#include <QObject>
+#include <KIO/OpenFileManagerWindowJob>
+
+extern "C" void highlightInFileManager(const QUrl& url) {
+    KIO::OpenFileManagerWindowJob* job = KIO::highlightInFileManager({url});
+    QObject::connect(job, &KIO::OpenFileManagerWindowJob::result, job, &KIO::OpenFileManagerWindowJob::deleteLater);
+}

resources/CMakeLists.txt

@@ -0,0 +1,59 @@
+target_sources(squawk PRIVATE resources.qrc)
+
+configure_file(images/logo.svg squawk.svg COPYONLY)
+configure_file(squawk.rc squawk.rc COPYONLY)
+
+if(WIN32)
+    set(CONVERT_BIN magick convert)
+else(WIN32)
+    set(CONVERT_BIN convert)
+endif(WIN32)
+execute_process(COMMAND ${CONVERT_BIN} -background none -size 48x48 squawk.svg squawk48.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+execute_process(COMMAND ${CONVERT_BIN} -background none -size 64x64 squawk.svg squawk64.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+execute_process(COMMAND ${CONVERT_BIN} -background none -size 128x128 squawk.svg squawk128.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+execute_process(COMMAND ${CONVERT_BIN} -background none -size 256x256 squawk.svg squawk256.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+
+if (WIN32)
+    execute_process(COMMAND ${CONVERT_BIN} squawk48.png squawk64.png squawk256.png squawk.ico WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    set(SQUAWK_WIN_RC "${CMAKE_CURRENT_BINARY_DIR}/squawk.rc")
+    set(SQUAWK_WIN_RC "${SQUAWK_WIN_RC}" PARENT_SCOPE)
+    target_sources(squawk PRIVATE ${SQUAWK_WIN_RC})
+endif(WIN32)
+
+if (APPLE)
+    file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/icns.iconset")
+    execute_process(COMMAND convert -background none -size 16x16 squawk.svg icns.iconset/icon_16x16.png WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND convert -background none -resize !32x32 squawk.svg "icns.iconset/icon_16x16@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND convert -background none -resize !32x32 squawk.svg "icns.iconset/icon_32x32.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND convert -background none -resize !64x64 squawk.svg "icns.iconset/icon_32x32@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND convert -background none -resize !128x128 squawk.svg "icns.iconset/icon_128x128.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND convert -background none -resize !256x256 squawk.svg "icns.iconset/icon_128x128@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND convert -background none -resize !256x256 squawk.svg "icns.iconset/icon_256x256.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND convert -background none -resize !512x512 squawk.svg "icns.iconset/icon_256x256@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND convert -background none -resize !512x512 squawk.svg "icns.iconset/icon_512x512.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND convert -background none -resize !1024x1024 squawk.svg "icns.iconset/icon_512x512@2x.png" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    execute_process(COMMAND iconutil -c icns "icns.iconset" -o "squawk.icns" WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    set(MACOSX_BUNDLE_ICON_FILE squawk.icns)
+    set(MACOSX_BUNDLE_ICON_FILE ${MACOSX_BUNDLE_ICON_FILE} PARENT_SCOPE)
+    set(APP_ICON_MACOSX ${CMAKE_CURRENT_BINARY_DIR}/squawk.icns)
+    set(APP_ICON_MACOSX ${APP_ICON_MACOSX} PARENT_SCOPE)
+    target_sources(squawk PRIVATE ${APP_ICON_MACOSX})
+    set_source_files_properties(${APP_ICON_MACOSX} TARGET_DIRECTORY squawk PROPERTIES
+               MACOSX_PACKAGE_LOCATION "Resources")
+    if (CMAKE_BUILD_TYPE STREQUAL "Release")
+      if (APPLE)
+        set_target_properties(squawk PROPERTIES
+          MACOSX_BUNDLE_EXECUTABLE_NAME "Squawk"
+          MACOSX_BUNDLE_ICON_FILE "${MACOSX_BUNDLE_ICON_FILE}" # TODO
+          MACOSX_BUNDLE_BUNDLE_NAME "Squawk"
+          MACOSX_BUNDLE_INFO_PLIST ${CMAKE_SOURCE_DIR}/cmake/MacOSXBundleInfo.plist.in)
+      endif(APPLE)
+    endif()
+endif (APPLE)
+
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk.svg DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/scalable/apps)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk48.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/48x48/apps RENAME squawk.png)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk64.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/64x64/apps RENAME squawk.png)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk128.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/128x128/apps RENAME squawk.png)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/squawk256.png DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/256x256/apps RENAME squawk.png)
+

resources/images/fallback/dark/big/document-preview.svg

@@ -0,0 +1,11 @@
+<!DOCTYPE svg>
+<svg viewBox="0 0 22 22" version="1.1" xmlns="http://www.w3.org/2000/svg">
+    <defs>
+        <style type="text/css" id="current-color-scheme">
+            .ColorScheme-Text {
+                color:#232629;
+            }
+        </style>
+    </defs>
+    <path class="ColorScheme-Text" style="fill:currentColor; fill-opacity:1; stroke:none" d="M 4 3 L 4 19 L 15 19 L 15 18 L 5 18 L 5 4 L 13 4 L 13 8 L 17 8 L 17 16 L 18 16 L 18 7 L 14 3 L 4 3 Z M 13 11 C 11.338 11 10 12.338 10 14 C 10 15.662 11.338 17 13 17 C 13.6494 17 14.2464 16.7914 14.7363 16.4434 L 17.293 19 L 18 18.293 L 15.4434 15.7363 C 15.7914 15.2464 16 14.6494 16 14 C 16 12.338 14.662 11 13 11 Z M 13 12 C 14.108 12 15 12.892 15 14 C 15 15.108 14.108 16 13 16 C 11.892 16 11 15.108 11 14 C 11 12.892 11.892 12 13 12 Z"/>
+</svg>

resources/images/fallback/dark/big/folder.svg

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<svg width="32" version="1.1" xmlns="http://www.w3.org/2000/svg" height="32" viewBox="0 0 32 32" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape">
+ <defs id="defs5455">
+  <linearGradient inkscape:collect="always" id="linearGradient4172-5">
+   <stop style="stop-color:#3daee9" id="stop4174-6"/>
+   <stop offset="1" style="stop-color:#6cc1ef" id="stop4176-6"/>
+  </linearGradient>
+  <linearGradient inkscape:collect="always" xlink:href="#linearGradient4172-5" id="linearGradient4342" y1="29" y2="8" x2="0" gradientUnits="userSpaceOnUse"/>
+ </defs>
+ <metadata id="metadata5458"/>
+ <g inkscape:label="Capa 1" inkscape:groupmode="layer" id="layer1" transform="matrix(1 0 0 1 -384.57143 -515.798)">
+  <path inkscape:connector-curvature="0" style="fill:#147eb8;fill-rule:evenodd" id="path4308" d="m 386.57144,518.798 0,7 0,1 28,0 0,-6 -14.00001,0 -2,-2 z"/>
+  <path inkscape:connector-curvature="0" style="fill-opacity:0.235294;fill-rule:evenodd" id="path4306" d="m 397.57143,523.798 -1.99999,1 -9,0 0,1 6.99999,0 3,0 z"/>
+  <path style="fill:url(#linearGradient4342)" id="rect4294" d="M 13 8 L 11 10 L 2 10 L 1 10 L 1 29 L 12 29 L 13 29 L 31 29 L 31 8 L 13 8 z " transform="matrix(1 0 0 1 384.57143 515.798)"/>
+  <path inkscape:connector-curvature="0" style="fill:#ffffff;fill-opacity:0.235294;fill-rule:evenodd" id="path4304" d="m 397.57143,523.798 -2,2 -10,0 0,1 11,0 z"/>
+  <path inkscape:connector-curvature="0" style="fill:#ffffff;fill-opacity:0.235294;fill-rule:evenodd" id="path4310" d="m 398.57143,518.798 1,3 15.00001,0 0,-1 -14.00001,0 z"/>
+  <rect width="30" x="385.57144" y="543.79797" height="1" style="fill-opacity:0.235294" id="rect4292"/>
+ </g>
+</svg>

resources/images/fallback/dark/small/document-preview.svg

@@ -0,0 +1,12 @@
+<!DOCTYPE svg>
+<svg viewBox="0 0 16 16" version="1.1" xmlns="http://www.w3.org/2000/svg">
+    <defs>
+        <style type="text/css" id="current-color-scheme">
+            .ColorScheme-Text {
+                color:#232629;
+            }
+        </style>
+    </defs>
+    <path class="ColorScheme-Text" style="fill:currentColor; fill-opacity:1; stroke:none" d="M 3 2 L 3 14 L 10 14 L 10 13 L 4 13 L 4 3 L 9 3 L 9 6 L 12 6 L 12 11 L 13 11 L 13 5 L 10 2 L 3 2 Z"/>
+    <path class="ColorScheme-Text" style="fill:currentColor; fill-opacity:1; stroke:none" d="M 8.48828 7 C 7.10757 7 5.98828 8.11929 5.98828 9.5 C 5.98828 10.8807 7.10757 12 8.48828 12 C 8.97811 11.9992 9.45691 11.8546 9.86523 11.584 L 12.2813 14 L 12.9883 13.293 L 10.5723 10.877 C 10.8428 10.4686 10.9875 9.98983 10.9883 9.5 C 10.9883 8.11929 9.86899 7 8.48828 7 Z M 8.48828 8 C 9.31671 8 9.98828 8.67157 9.98828 9.5 C 9.98828 10.3284 9.31671 11 8.48828 11 C 7.65985 11 6.98828 10.3284 6.98828 9.5 C 6.98828 8.67157 7.65985 8 8.48828 8 Z"/>
+</svg>

resources/images/fallback/dark/small/folder.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#232629;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+       d="M 2 2 L 2 3 L 2 6 L 2 7 L 2 13 L 2 14 L 14 14 L 14 13 L 14 6 L 14 5 L 14 4 L 9.0078125 4 L 7.0078125 2 L 7 2.0078125 L 7 2 L 3 2 L 2 2 z M 3 3 L 6.5917969 3 L 7.59375 4 L 7 4 L 7 4.0078125 L 6.9921875 4 L 4.9921875 6 L 3 6 L 3 3 z M 3 7 L 13 7 L 13 13 L 3 13 L 3 7 z "
+       class="ColorScheme-Text"
+       />
+</svg>

resources/images/fallback/light/big/document-preview.svg

@@ -0,0 +1,11 @@
+<!DOCTYPE svg>
+<svg viewBox="0 0 22 22" version="1.1" xmlns="http://www.w3.org/2000/svg">
+    <defs>
+        <style type="text/css" id="current-color-scheme">
+            .ColorScheme-Text {
+                color:#eff0f1;
+            }
+        </style>
+    </defs>
+    <path class="ColorScheme-Text" style="fill:currentColor; fill-opacity:1; stroke:none" d="M 4 3 L 4 19 L 15 19 L 15 18 L 5 18 L 5 4 L 13 4 L 13 8 L 17 8 L 17 16 L 18 16 L 18 7 L 14 3 L 4 3 Z M 13 11 C 11.338 11 10 12.338 10 14 C 10 15.662 11.338 17 13 17 C 13.6494 17 14.2464 16.7914 14.7363 16.4434 L 17.293 19 L 18 18.293 L 15.4434 15.7363 C 15.7914 15.2464 16 14.6494 16 14 C 16 12.338 14.662 11 13 11 Z M 13 12 C 14.108 12 15 12.892 15 14 C 15 15.108 14.108 16 13 16 C 11.892 16 11 15.108 11 14 C 11 12.892 11.892 12 13 12 Z"/>
+</svg>

resources/images/fallback/light/big/folder.svg

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<svg width="32" version="1.1" xmlns="http://www.w3.org/2000/svg" height="32" viewBox="0 0 32 32" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape">
+ <defs id="defs5455">
+  <linearGradient inkscape:collect="always" id="linearGradient4172-5">
+   <stop style="stop-color:#3daee9" id="stop4174-6"/>
+   <stop offset="1" style="stop-color:#6cc1ef" id="stop4176-6"/>
+  </linearGradient>
+  <linearGradient inkscape:collect="always" xlink:href="#linearGradient4172-5" id="linearGradient4342" y1="29" y2="8" x2="0" gradientUnits="userSpaceOnUse"/>
+ </defs>
+ <metadata id="metadata5458"/>
+ <g inkscape:label="Capa 1" inkscape:groupmode="layer" id="layer1" transform="matrix(1 0 0 1 -384.57143 -515.798)">
+  <path inkscape:connector-curvature="0" style="fill:#147eb8;fill-rule:evenodd" id="path4308" d="m 386.57144,518.798 0,7 0,1 28,0 0,-6 -14.00001,0 -2,-2 z"/>
+  <path inkscape:connector-curvature="0" style="fill-opacity:0.235294;fill-rule:evenodd" id="path4306" d="m 397.57143,523.798 -1.99999,1 -9,0 0,1 6.99999,0 3,0 z"/>
+  <path style="fill:url(#linearGradient4342)" id="rect4294" d="M 13 8 L 11 10 L 2 10 L 1 10 L 1 29 L 12 29 L 13 29 L 31 29 L 31 8 L 13 8 z " transform="matrix(1 0 0 1 384.57143 515.798)"/>
+  <path inkscape:connector-curvature="0" style="fill:#ffffff;fill-opacity:0.235294;fill-rule:evenodd" id="path4304" d="m 397.57143,523.798 -2,2 -10,0 0,1 11,0 z"/>
+  <path inkscape:connector-curvature="0" style="fill:#ffffff;fill-opacity:0.235294;fill-rule:evenodd" id="path4310" d="m 398.57143,518.798 1,3 15.00001,0 0,-1 -14.00001,0 z"/>
+  <rect width="30" x="385.57144" y="543.79797" height="1" style="fill-opacity:0.235294" id="rect4292"/>
+ </g>
+</svg>

resources/images/fallback/light/small/document-preview.svg

@@ -0,0 +1,12 @@
+<!DOCTYPE svg>
+<svg viewBox="0 0 16 16" version="1.1" xmlns="http://www.w3.org/2000/svg">
+    <defs>
+        <style type="text/css" id="current-color-scheme">
+            .ColorScheme-Text {
+                color:#eff0f1;
+            }
+        </style>
+    </defs>
+    <path class="ColorScheme-Text" style="fill:currentColor; fill-opacity:1; stroke:none" d="M 3 2 L 3 14 L 10 14 L 10 13 L 4 13 L 4 3 L 9 3 L 9 6 L 12 6 L 12 11 L 13 11 L 13 5 L 10 2 L 3 2 Z"/>
+    <path class="ColorScheme-Text" style="fill:currentColor; fill-opacity:1; stroke:none" d="M 8.48828 7 C 7.10757 7 5.98828 8.11929 5.98828 9.5 C 5.98828 10.8807 7.10757 12 8.48828 12 C 8.97811 11.9992 9.45691 11.8546 9.86523 11.584 L 12.2813 14 L 12.9883 13.293 L 10.5723 10.877 C 10.8428 10.4686 10.9875 9.98983 10.9883 9.5 C 10.9883 8.11929 9.86899 7 8.48828 7 Z M 8.48828 8 C 9.31671 8 9.98828 8.67157 9.98828 9.5 C 9.98828 10.3284 9.31671 11 8.48828 11 C 7.65985 11 6.98828 10.3284 6.98828 9.5 C 6.98828 8.67157 7.65985 8 8.48828 8 Z"/>
+</svg>

resources/images/fallback/light/small/folder.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#eff0f1;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+       d="M 2 2 L 2 3 L 2 6 L 2 7 L 2 13 L 2 14 L 14 14 L 14 13 L 14 6 L 14 5 L 14 4 L 9.0078125 4 L 7.0078125 2 L 7 2.0078125 L 7 2 L 3 2 L 2 2 z M 3 3 L 6.5917969 3 L 7.59375 4 L 7 4 L 7 4.0078125 L 6.9921875 4 L 4.9921875 6 L 3 6 L 3 3 z M 3 7 L 13 7 L 13 13 L 3 13 L 3 7 z "
+       class="ColorScheme-Text"
+       />
+</svg>

resources/resources.qrc

@@ -40,6 +40,8 @@
     <file>images/fallback/dark/big/favorite.svg</file>
     <file>images/fallback/dark/big/unfavorite.svg</file>
     <file>images/fallback/dark/big/add.svg</file>
+    <file>images/fallback/dark/big/folder.svg</file>
+    <file>images/fallback/dark/big/document-preview.svg</file>
     
     
     <file>images/fallback/dark/small/absent.svg</file>
@@ -80,6 +82,8 @@
     <file>images/fallback/dark/small/favorite.svg</file>
     <file>images/fallback/dark/small/unfavorite.svg</file>
     <file>images/fallback/dark/small/add.svg</file>
+    <file>images/fallback/dark/small/folder.svg</file>
+    <file>images/fallback/dark/small/document-preview.svg</file>
     
     
     <file>images/fallback/light/big/absent.svg</file>
@@ -120,6 +124,8 @@
     <file>images/fallback/light/big/favorite.svg</file>
     <file>images/fallback/light/big/unfavorite.svg</file>
     <file>images/fallback/light/big/add.svg</file>
+    <file>images/fallback/light/big/folder.svg</file>
+    <file>images/fallback/light/big/document-preview.svg</file>
     
     
     <file>images/fallback/light/small/absent.svg</file>
@@ -160,5 +166,7 @@
     <file>images/fallback/light/small/favorite.svg</file>
     <file>images/fallback/light/small/unfavorite.svg</file>
     <file>images/fallback/light/small/add.svg</file>
+    <file>images/fallback/light/small/folder.svg</file>
+    <file>images/fallback/light/small/document-preview.svg</file>
 </qresource>
 </RCC>

resources/squawk.rc

@@ -0,0 +1 @@
+IDI_ICON1               ICON    "squawk.ico"

shared/CMakeLists.txt

@@ -0,0 +1,21 @@
+target_sources(squawk PRIVATE
+  enums.h
+  global.cpp
+  global.h
+  exception.cpp
+  exception.h
+  icons.cpp
+  icons.h
+  message.cpp
+  message.h
+  messageinfo.cpp
+  messageinfo.h
+  order.h
+  shared.h
+  utils.cpp
+  utils.h
+  vcard.cpp
+  vcard.h
+  pathcheck.cpp
+  pathcheck.h
+  )

shared/exception.cpp

@@ -28,5 +28,6 @@ Utils::Exception::~Exception()
 
 const char* Utils::Exception::what() const noexcept( true )
 {
-    return getMessage().c_str();
+    std::string* msg = new std::string(getMessage());
+    return msg->c_str();
 }

shared/global.cpp

@@ -19,10 +19,24 @@
 #include "global.h"
 
 #include "enums.h"
+#include "ui/models/roster.h"
 
 Shared::Global* Shared::Global::instance = 0;
 const std::set<QString> Shared::Global::supportedImagesExts = {"png", "jpg", "webp", "jpeg", "gif", "svg"};
 
+#ifdef WITH_KIO
+QLibrary Shared::Global::openFileManagerWindowJob("openFileManagerWindowJob");
+Shared::Global::HighlightInFileManager Shared::Global::hfm = 0;
+#endif
+
+#ifdef WITH_KCONFIG
+QLibrary Shared::Global::colorSchemeTools("colorSchemeTools");
+Shared::Global::CreatePreview Shared::Global::createPreview = 0;
+Shared::Global::DeletePreview Shared::Global::deletePreview = 0;
+Shared::Global::ColorSchemeName Shared::Global::colorSchemeName = 0;
+Shared::Global::CreatePalette Shared::Global::createPalette = 0;
+#endif
+
 Shared::Global::Global():
     availability({
         tr("Online", "Availability"), 
@@ -79,17 +93,94 @@ Shared::Global::Global():
         tr("Squawk is going to query you for the password on every start of the program", "AccountPasswordDescription"),
         tr("Your password is going to be stored in KDE wallet storage (KWallet). You're going to be queried for permissions", "AccountPasswordDescription")
     }),
+    defaultSystemStyle(QApplication::style()->objectName()),
+    defaultSystemPalette(QApplication::palette()),
     pluginSupport({
-        {"KWallet", false}
-    })
+        {"KWallet", false},
+        {"openFileManagerWindowJob", false},
+        {"colorSchemeTools", false}
+    }),
+    fileCache()
 {
     if (instance != 0) {
         throw 551;
     }
     
     instance = this;
+
+#ifdef WITH_KIO
+    openFileManagerWindowJob.load();
+    if (openFileManagerWindowJob.isLoaded()) {
+        hfm = (HighlightInFileManager) openFileManagerWindowJob.resolve("highlightInFileManager");
+        if (hfm) {
+            setSupported("openFileManagerWindowJob", true);
+            qDebug() << "KIO::OpenFileManagerWindow support enabled";
+        } else {
+            qDebug() << "KIO::OpenFileManagerWindow support disabled: couldn't resolve required methods in the library";
+        }
+    } else {
+        qDebug() << "KIO::OpenFileManagerWindow support disabled: couldn't load the library" << openFileManagerWindowJob.errorString();
+    }
+#endif
+
+#ifdef WITH_KCONFIG
+    colorSchemeTools.load();
+    if (colorSchemeTools.isLoaded()) {
+        createPreview = (CreatePreview) colorSchemeTools.resolve("createPreview");
+        deletePreview = (DeletePreview) colorSchemeTools.resolve("deletePreview");
+        colorSchemeName = (ColorSchemeName) colorSchemeTools.resolve("colorSchemeName");
+        createPalette = (CreatePalette) colorSchemeTools.resolve("createPalette");
+        if (createPreview && deletePreview && colorSchemeName && createPalette) {
+            setSupported("colorSchemeTools", true);
+            qDebug() << "Color Schemes support enabled";
+        } else {
+            qDebug() << "Color Schemes support disabled: couldn't resolve required methods in the library";
+        }
+    } else {
+        qDebug() << "Color Schemes support disabled: couldn't load the library" << colorSchemeTools.errorString();
+    }
+#endif
 }
 
+
+static const QSize defaultIconFileInfoHeight(50, 50);
+Shared::Global::FileInfo Shared::Global::getFileInfo(const QString& path)
+{
+    std::map<QString, FileInfo>::const_iterator itr = instance->fileCache.find(path);
+    if (itr == instance->fileCache.end()) {
+        QMimeDatabase db;
+        QMimeType type = db.mimeTypeForFile(path);
+        QStringList parts = type.name().split("/");
+        QString big = parts.front();
+        QFileInfo info(path);
+        
+        FileInfo::Preview p = FileInfo::Preview::none;
+        QSize size;
+        if (big == "image") {
+            QMovie mov(path);
+            if (mov.isValid() && mov.frameCount() > 1) {
+                p = FileInfo::Preview::animation;
+            } else {
+                p = FileInfo::Preview::picture;
+            }
+            QImageReader img(path);
+            size = img.size();
+//         } else if (big == "video") {
+//             p = FileInfo::Preview::movie;
+//             QMovie mov(path);
+//             size = mov.scaledSize();
+//             qDebug() << mov.isValid();
+        } else {
+            size = defaultIconFileInfoHeight;
+        }
+        
+        itr = instance->fileCache.insert(std::make_pair(path, FileInfo({info.absoluteFilePath(), info.fileName(), size, type, p}))).first;
+    } 
+    
+    return itr->second;
+}
+
+
 Shared::Global * Shared::Global::getInstance()
 {
     return instance;
@@ -152,6 +243,113 @@ QString Shared::Global::getDescription(Shared::AccountPassword ap)
     return instance->accountPasswordDescription[static_cast<int>(ap)];
 }
 
+
+static const QStringList query = {"query", "default", "inode/directory"};
+static const QRegularExpression dolphinReg("[Dd]olphin");
+static const QRegularExpression nautilusReg("[Nn]autilus");
+static const QRegularExpression cajaReg("[Cc]aja");
+static const QRegularExpression nemoReg("[Nn]emo");
+static const QRegularExpression konquerorReg("kfmclient");
+static const QRegularExpression pcmanfmQtReg("pcmanfm-qt");
+static const QRegularExpression pcmanfmReg("pcmanfm");
+static const QRegularExpression thunarReg("thunar");
+
+void Shared::Global::highlightInFileManager(const QString& path)
+{
+#ifdef WITH_KIO
+    if (supported("openFileManagerWindowJob")) {
+        hfm(path);
+        return;
+    } else {
+        qDebug() << "requested to highlight in file manager url" << path << "but it's not supported: KIO plugin isn't loaded, trying fallback";
+    }
+#else
+    qDebug() << "requested to highlight in file manager url" << path << "but it's not supported: squawk wasn't compiled to support it, trying fallback";
+#endif
+    
+    QFileInfo info = path;
+    if (info.exists()) {
+        QProcess proc;
+        proc.start("xdg-mime", query);
+        proc.waitForFinished();
+        QString output = proc.readLine().simplified();
+        
+        QString folder;
+        if (info.isDir()) {
+            folder = info.canonicalFilePath();
+        } else {
+            folder = info.canonicalPath();
+        }
+        
+        if (output.contains(dolphinReg)) {
+            //there is a bug on current (21.04.0) dolphin, it works correct only if you already have dolphin launched
+            proc.startDetached("dolphin", QStringList() << "--select" << info.canonicalFilePath());
+            //KIO::highlightInFileManager({QUrl(info.canonicalFilePath())});
+        } else if (output.contains(nautilusReg)) {
+            proc.startDetached("nautilus", QStringList() << "--select" << info.canonicalFilePath());    //this worked on nautilus
+        } else if (output.contains(cajaReg)) {
+            proc.startDetached("caja", QStringList() << folder);  //caja doesn't seem to support file selection command line, gonna just open directory
+        } else if (output.contains(nemoReg)) {
+            proc.startDetached("nemo", QStringList() << info.canonicalFilePath());      //nemo supports selecting files without keys
+        } else if (output.contains(konquerorReg)) {
+            proc.startDetached("konqueror", QStringList() << "--select" << info.canonicalFilePath());   //this worked on konqueror
+        } else if (output.contains(pcmanfmQtReg)) {
+            proc.startDetached("pcmanfm-qt", QStringList() << folder);   //pcmanfm-qt doesn't seem to support open with selection, gonna just open directory
+        } else if (output.contains(pcmanfmReg)) {
+            proc.startDetached("pcmanfm", QStringList() << folder);   //pcmanfm also doesn't seem to support open with selection, gonna just open directory
+        } else if (output.contains(thunarReg)) {
+            proc.startDetached("thunar", QStringList() << folder);   //thunar doesn't seem to support open with selection, gonna just open directory
+        } else {
+            QDesktopServices::openUrl(QUrl::fromLocalFile(folder));
+        }
+    }
+}
+
+QIcon Shared::Global::createThemePreview(const QString& path)
+{
+    if (supported("colorSchemeTools")) {
+        QIcon* icon = createPreview(path);
+        QIcon localIcon = *icon;
+        deletePreview(icon);
+        return localIcon;
+    } else {
+        return QIcon();
+    }
+}
+
+QString Shared::Global::getColorSchemeName(const QString& path)
+{
+    if (supported("colorSchemeTools")) {
+        QString res;
+        colorSchemeName(path, res);
+        return res;
+    } else {
+        return "";
+    }
+}
+
+void Shared::Global::setTheme(const QString& path)
+{
+    if (supported("colorSchemeTools")) {
+        if (path.toLower() == "system") {
+            QApplication::setPalette(getInstance()->defaultSystemPalette);
+        } else {
+            QPalette pallete;
+            createPalette(path, pallete);
+            QApplication::setPalette(pallete);
+        }
+    }
+}
+
+void Shared::Global::setStyle(const QString& style)
+{
+    if (style.toLower() == "system") {
+        QApplication::setStyle(getInstance()->defaultSystemStyle);
+    } else {
+        QApplication::setStyle(style);
+    }
+}
+
 #define FROM_INT_INPL(Enum)                                                                 \
 template<>                                                                                  \
 Enum Shared::Global::fromInt(int src)                                                       \

shared/global.h

@@ -27,17 +27,43 @@
 #include <set>
 #include <deque>
 
-#include <QCoreApplication>
+#include <QApplication>
+#include <QStyle>
 #include <QDebug>
+#include <QMimeType>
+#include <QMimeDatabase>
+#include <QFileInfo>
+#include <QImage>
+#include <QMovie>
+#include <QSize>
+#include <QUrl>
+#include <QLibrary>
+#include <QFileInfo>
+#include <QProcess>
+#include <QDesktopServices>
+#include <QRegularExpression>
 
 namespace Shared {
     
     class Global {
         Q_DECLARE_TR_FUNCTIONS(Global)
-        
     public:
-        Global();
+        struct FileInfo {
+            enum class Preview {
+                none,
+                picture,
+                animation
+            };
+            
+            QString path;
+            QString name;
+            QSize size;
+            QMimeType mime;
+            Preview preview;
+        };
         
+        Global();
+
         static Global* getInstance();
         static QString getName(Availability av);
         static QString getName(ConnectionState cs);
@@ -58,12 +84,22 @@ namespace Shared {
         const std::deque<QString> accountPassword;
         
         const std::deque<QString> accountPasswordDescription;
+
+        const QString defaultSystemStyle;
+        const QPalette defaultSystemPalette;
         
         static bool supported(const QString& pluginName);
         static void setSupported(const QString& pluginName, bool support);
         
         static const std::set<QString> supportedImagesExts;
         
+        static FileInfo getFileInfo(const QString& path);
+        static void highlightInFileManager(const QString& path);
+        static QIcon createThemePreview(const QString& path);
+        static QString getColorSchemeName(const QString& path);
+        static void setTheme(const QString& path);
+        static void setStyle(const QString& style);
+        
         template<typename T>
         static T fromInt(int src);
         
@@ -87,6 +123,29 @@ namespace Shared {
         static Global* instance;
         
         std::map<QString, bool> pluginSupport;
+        std::map<QString, FileInfo> fileCache;
+        
+#ifdef WITH_KIO
+        static QLibrary openFileManagerWindowJob;
+        
+        typedef void (*HighlightInFileManager)(const QUrl &);
+        
+        static HighlightInFileManager hfm;
+#endif
+
+#ifdef WITH_KCONFIG
+        static QLibrary colorSchemeTools;
+
+        typedef QIcon* (*CreatePreview)(const QString&);
+        typedef void (*DeletePreview)(QIcon*);
+        typedef void (*ColorSchemeName)(const QString&, QString&);
+        typedef void (*CreatePalette)(const QString&, QPalette&);
+
+        static CreatePreview createPreview;
+        static DeletePreview deletePreview;
+        static ColorSchemeName colorSchemeName;
+        static CreatePalette createPalette;
+#endif
     };
 }
 

shared/icons.h

@@ -170,6 +170,8 @@ static const std::map<QString, std::pair<QString, QString>> icons = {
     {"favorite", {"favorite", "favorite"}},
     {"unfavorite", {"draw-star", "unfavorite"}},
     {"list-add", {"list-add", "add"}},
+    {"folder", {"folder", "folder"}},
+    {"document-preview", {"document-preview", "document-preview"}}
 };
 }
 

shared/message.cpp

@@ -32,7 +32,13 @@ Shared::Message::Message(Shared::Message::Type p_type):
     outgoing(false),
     forwarded(false),
     state(State::delivered),
-    edited(false) {}
+    edited(false),
+    errorText(),
+    originalMessage(),
+    lastModified(),
+    stanzaId(),
+    attachPath()
+    {}
 
 Shared::Message::Message():
     jFrom(),
@@ -50,7 +56,10 @@ Shared::Message::Message():
     edited(false),
     errorText(),
     originalMessage(),
-    lastModified() {}
+    lastModified(),
+    stanzaId(),
+    attachPath()
+    {}
 
 QString Shared::Message::getBody() const
 {
@@ -77,7 +86,11 @@ QString Shared::Message::getTo() const
 
 QString Shared::Message::getId() const
 {
-    return id;
+    if (id.size() > 0) {
+        return id;
+    } else {
+        return stanzaId;
+    }
 }
 
 QDateTime Shared::Message::getTime() const
@@ -94,9 +107,9 @@ void Shared::Message::setFrom(const QString& from)
 {
     QStringList list = from.split("/");
     if (list.size() == 1) {
-        jFrom = from;
+        jFrom = from.toLower();
     } else {
-        jFrom = list.front();
+        jFrom = list.front().toLower();
         rFrom = list.back();
     }
 }
@@ -105,9 +118,9 @@ void Shared::Message::setTo(const QString& to)
 {
     QStringList list = to.split("/");
     if (list.size() == 1) {
-        jTo = to;
+        jTo = to.toLower();
     } else {
-        jTo = list.front();
+        jTo = list.front().toLower();
         rTo = list.back();
     }
 }
@@ -177,7 +190,7 @@ bool Shared::Message::getEdited() const
 
 void Shared::Message::setFromJid(const QString& from)
 {
-    jFrom = from;
+    jFrom = from.toLower();
 }
 
 void Shared::Message::setFromResource(const QString& from)
@@ -187,7 +200,7 @@ void Shared::Message::setFromResource(const QString& from)
 
 void Shared::Message::setToJid(const QString& to)
 {
-    jTo = to;
+    jTo = to.toLower();
 }
 
 void Shared::Message::setToResource(const QString& to)
@@ -299,6 +312,8 @@ void Shared::Message::serialize(QDataStream& data) const
         data << originalMessage;
         data << lastModified;
     }
+    data << stanzaId;
+    data << attachPath;
 }
 
 void Shared::Message::deserialize(QDataStream& data)
@@ -328,6 +343,8 @@ void Shared::Message::deserialize(QDataStream& data)
         data >> originalMessage;
         data >> lastModified;
     }
+    data >> stanzaId;
+    data >> attachPath;
 }
 
 bool Shared::Message::change(const QMap<QString, QVariant>& data)
@@ -337,6 +354,16 @@ bool Shared::Message::change(const QMap<QString, QVariant>& data)
         setState(static_cast<State>(itr.value().toUInt()));
     }
     
+    itr = data.find("outOfBandUrl");
+    if (itr != data.end()) {
+        setOutOfBandUrl(itr.value().toString());
+    }
+    
+    itr = data.find("attachPath");
+    if (itr != data.end()) {
+        setAttachPath(itr.value().toString());
+    }
+    
     if (state == State::error) {
         itr = data.find("errorText");
         if (itr != data.end()) {
@@ -353,20 +380,45 @@ bool Shared::Message::change(const QMap<QString, QVariant>& data)
             idChanged = true;
         }
     }
+    
+    itr = data.find("stanzaId");
+    if (itr != data.end()) {
+        QString newId = itr.value().toString();
+        if (stanzaId != newId) {
+            setStanzaId(newId);
+            if (id.size() == 0) {
+                idChanged = true;
+            }
+        }
+    }
+    
     itr = data.find("body");
     if (itr != data.end()) {
-        QMap<QString, QVariant>::const_iterator dItr = data.find("stamp");
-        QDateTime correctionDate;
-        if (dItr != data.end()) {
-            correctionDate = dItr.value().toDateTime();
-        } else {
-            correctionDate = QDateTime::currentDateTimeUtc();      //in case there is no information about time of this correction it's applied
+        QString b = itr.value().toString();
+        if (body != b) {
+            QMap<QString, QVariant>::const_iterator dItr = data.find("stamp");
+            QDateTime correctionDate;
+            if (dItr != data.end()) {
+                correctionDate = dItr.value().toDateTime();
+            } else {
+                correctionDate = QDateTime::currentDateTimeUtc();      //in case there is no information about time of this correction it's applied
+            }
+            if (!edited || lastModified < correctionDate) {
+                if (!edited) {
+                    originalMessage = body;
+                }
+                lastModified = correctionDate;
+                setBody(b);
+                setEdited(true);
+            }
         }
-        if (!edited || lastModified < correctionDate) {
-            originalMessage = body;
-            lastModified = correctionDate;
-            setBody(itr.value().toString());
-            setEdited(true);
+    } else {
+        QMap<QString, QVariant>::const_iterator dItr = data.find("stamp");
+        if (dItr != data.end()) {
+            QDateTime ntime = dItr.value().toDateTime();
+            if (time != ntime) {
+                setTime(ntime);
+            }
         }
     }
     
@@ -395,5 +447,45 @@ void Shared::Message::setOutOfBandUrl(const QString& url)
 
 bool Shared::Message::storable() const
 {
-    return id.size() > 0 && (body.size() > 0 || oob.size()) > 0;
+    return id.size() > 0 && (body.size() > 0 || oob.size() > 0 || attachPath.size() > 0);
 }
+
+void Shared::Message::setStanzaId(const QString& sid)
+{
+    stanzaId = sid;
+}
+
+QString Shared::Message::getStanzaId() const
+{
+    return stanzaId;
+}
+
+QString Shared::Message::getAttachPath() const
+{
+    return attachPath;
+}
+
+void Shared::Message::setAttachPath(const QString& path)
+{
+    attachPath = path;
+}
+
+Shared::Message::Change::Change(const QMap<QString, QVariant>& _data):
+    data(_data),
+    idModified(false) {}
+    
+void Shared::Message::Change::operator()(Shared::Message& msg)
+{
+    idModified = msg.change(data);
+}
+
+void Shared::Message::Change::operator()(Shared::Message* msg)
+{
+    idModified = msg->change(data);
+}
+
+bool Shared::Message::Change::hasIdBeenModified() const
+{
+    return idModified;
+}
+

shared/message.h

@@ -16,15 +16,15 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#ifndef SHAPER_MESSAGE_H
+#define SHAPER_MESSAGE_H
+
 #include <QString>
 #include <QDateTime>
 #include <QVariant>
 #include <QMap>
 #include <QDataStream>
 
-#ifndef SHAPER_MESSAGE_H
-#define SHAPER_MESSAGE_H
-
 namespace Shared {
 
 /**
@@ -46,9 +46,22 @@ public:
         delivered,
         error
     };
+    
     static const State StateHighest = State::error;
     static const State StateLowest = State::pending;
     
+    struct Change       //change functor, stores in idModified if ID has been modified during change
+    {
+        Change(const QMap<QString, QVariant>& _data);
+        void operator() (Message& msg);
+        void operator() (Message* msg);
+        bool hasIdBeenModified() const;
+        
+    private:
+        const QMap<QString, QVariant>& data;
+        bool idModified;
+    };
+    
     Message(Type p_type);
     Message();
     
@@ -71,6 +84,8 @@ public:
     void setEdited(bool p_edited);
     void setErrorText(const QString& err);
     bool change(const QMap<QString, QVariant>& data);
+    void setStanzaId(const QString& sid);
+    void setAttachPath(const QString& path);
     
     QString getFrom() const;
     QString getFromJid() const;
@@ -98,6 +113,8 @@ public:
     bool serverStored() const;
     QDateTime getLastModified() const;
     QString getOriginalBody() const;
+    QString getStanzaId() const;
+    QString getAttachPath() const;
     
     void serialize(QDataStream& data) const;
     void deserialize(QDataStream& data);
@@ -120,6 +137,8 @@ private:
     QString errorText;
     QString originalMessage;
     QDateTime lastModified;
+    QString stanzaId;
+    QString attachPath;
 };
 
 }

shared/messageinfo.cpp

@@ -0,0 +1,45 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "messageinfo.h"
+
+using namespace Shared;
+
+Shared::MessageInfo::MessageInfo():
+    account(),
+    jid(),
+    messageId() {}
+
+Shared::MessageInfo::MessageInfo(const QString& acc, const QString& j, const QString& id):
+    account(acc),
+    jid(j),
+    messageId(id) {}
+
+Shared::MessageInfo::MessageInfo(const Shared::MessageInfo& other):
+    account(other.account),
+    jid(other.jid),
+    messageId(other.messageId) {}
+
+Shared::MessageInfo & Shared::MessageInfo::operator=(const Shared::MessageInfo& other)
+{
+    account = other.account;
+    jid = other.jid;
+    messageId = other.messageId;
+    
+    return *this;
+}

shared/messageinfo.h

@@ -0,0 +1,43 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SHARED_MESSAGEINFO_H
+#define SHARED_MESSAGEINFO_H
+
+#include <QString>
+
+namespace Shared {
+
+/**
+ * @todo write docs
+ */
+struct MessageInfo {
+    MessageInfo();
+    MessageInfo(const QString& acc, const QString& j, const QString& id);
+    MessageInfo(const MessageInfo& other);
+    
+    QString account;
+    QString jid;
+    QString messageId;
+    
+    MessageInfo& operator=(const MessageInfo& other);
+};
+
+}
+
+#endif // SHARED_MESSAGEINFO_H

shared/pathcheck.cpp

@@ -0,0 +1,96 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "pathcheck.h"
+
+QRegularExpression squawk("^squawk:\\/\\/");
+QString Shared::downloadsPathCheck()
+{
+    QSettings settings;
+    QVariant dpv = settings.value("downloadsPath");
+    QString path;
+    if (!dpv.isValid()) {
+        path = defaultDownloadsPath();
+        qDebug() << "no downloadsPath variable in config, using default" << path;
+        path = getAbsoluteWritablePath(path);
+        return path;
+    } else {
+        path = dpv.toString();
+        path = getAbsoluteWritablePath(path);
+        if (path.size() == 0) {
+            path = defaultDownloadsPath();
+            qDebug() << "falling back to the default downloads path" << path;
+            path = getAbsoluteWritablePath(path);
+        }
+        return path;
+    }
+}
+
+QString Shared::defaultDownloadsPath()
+{
+    return QStandardPaths::writableLocation(QStandardPaths::DownloadLocation) + "/" + QApplication::applicationName();
+}
+
+QString Shared::getAbsoluteWritablePath(const QString& path)
+{
+    QDir location(path);
+    if (!location.exists()) {
+        bool res = location.mkpath(location.absolutePath());
+        if (!res) {
+            qDebug() << "couldn't create directory" << path;
+            return "";
+        }
+    }
+    QFileInfo info(location.absolutePath());
+    if (info.isWritable()) {
+        return location.absolutePath();
+    } else {
+        qDebug() << "directory" << path << "is not writable";
+        return "";
+    }
+}
+
+QString Shared::resolvePath(QString path)
+{
+    QSettings settings;
+    QVariant dpv = settings.value("downloadsPath");
+    return path.replace(squawk, dpv.toString() + "/");
+}
+
+QString Shared::squawkifyPath(QString path)
+{
+    QSettings settings;
+    QString current = settings.value("downloadsPath").toString();
+
+    if (path.startsWith(current)) {
+        path.replace(0, current.size() + 1, "squawk://");
+    }
+
+    return path;
+}
+
+bool Shared::isSubdirectoryOfSettings(const QString& path)
+{
+
+    QSettings settings;
+    QDir oldPath(settings.value("downloadsPath").toString());
+    QDir newPath(path);
+
+    return newPath.canonicalPath().startsWith(oldPath.canonicalPath());
+}
+

shared/pathcheck.h

@@ -0,0 +1,44 @@
+/*
+ * Squawk messenger.
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef PATHCHECK_H
+#define PATHCHECK_H
+
+#include <QString>
+#include <QStandardPaths>
+#include <QSettings>
+#include <QApplication>
+#include <QDir>
+#include <QFileInfo>
+#include <QDebug>
+#include <QRegularExpression>
+
+namespace Shared {
+
+QString downloadsPathCheck();
+QString downloadsPathCheck(QString path);
+QString defaultDownloadsPath();
+
+QString getAbsoluteWritablePath(const QString& path);
+QString resolvePath(QString path);
+QString squawkifyPath(QString path);
+bool isSubdirectoryOfSettings(const QString& path);
+
+}
+
+#endif // PATHCHECK_H

shared/shared.h

@@ -19,11 +19,12 @@
 #ifndef SHARED_H
 #define SHARED_H
 
-#include "shared/enums.h"
-#include "shared/utils.h"
-#include "shared/icons.h"
-#include "shared/message.h"
-#include "shared/vcard.h"
-#include "shared/global.h"
+#include "enums.h"
+#include "global.h"
+#include "icons.h"
+#include "message.h"
+#include "messageinfo.h"
+#include "utils.h"
+#include "vcard.h"
 
 #endif // SHARED_H

shared/utils.cpp

@@ -17,15 +17,11 @@
  */
 
 #include "utils.h"
+#include <QUuid>
 
 QString Shared::generateUUID()
 {
-    uuid_t uuid;
-    uuid_generate(uuid);
-    
-    char uuid_str[36];
-    uuid_unparse_lower(uuid, uuid_str);
-    return uuid_str;
+    return QUuid::createUuid().toString();
 }
 
 
@@ -44,5 +40,5 @@ QString Shared::processMessageBody(const QString& msg)
 {
     QString processed = msg.toHtmlEscaped();
     processed.replace(urlReg, "<a href=\"\\1\">\\1</a>");
-    return "<p style=\"white-space: pre-wrap;\">" + processed + "</p>";
+    return "<p style=\"white-space: pre-wrap; line-height: 1em;\">" + processed + "</p>";
 }

shared/utils.h

@@ -20,11 +20,11 @@
 #define SHARED_UTILS_H
 
 #include <QString>
+#include <QStringList>
 #include <QColor>
 #include <QRegularExpression>
 
-#include <uuid/uuid.h>
-#include <vector>
+#include <vector> 
 
 namespace Shared {
 
@@ -69,6 +69,12 @@ static const std::vector<QColor> colorPalette = {
     QColor(17, 17, 80),
     QColor(54, 54, 94)
 };
+
+enum class Hover {
+    nothing,
+    text,
+    anchor
+};
 }
 
 #endif // SHARED_UTILS_H

translations/CMakeLists.txt

@@ -0,0 +1,12 @@
+find_package(Qt5LinguistTools)
+
+set(TS_FILES
+    squawk.en.ts
+    squawk.ru.ts
+    squawk.pt_BR.ts
+)
+qt5_add_translation(QM_FILES ${TS_FILES})
+add_custom_target(translations ALL DEPENDS ${QM_FILES})
+install(FILES ${QM_FILES} DESTINATION ${CMAKE_INSTALL_DATADIR}/macaw.me/squawk/l10n)
+
+add_dependencies(${CMAKE_PROJECT_NAME} translations)

translations/squawk.ru.ts

@@ -1,6 +1,108 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE TS>
 <TS version="2.1" language="ru_RU">
+<context>
+    <name>About</name>
+    <message>
+        <source>About Squawk</source>
+        <translation>О Программе Squawk</translation>
+    </message>
+    <message>
+        <source>Squawk</source>
+        <translation>Squawk</translation>
+    </message>
+    <message>
+        <source>About</source>
+        <translatorcomment>Tab title</translatorcomment>
+        <translation>Общее</translation>
+    </message>
+    <message>
+        <source>XMPP (jabber) messenger</source>
+        <translation>XMPP (jabber) мессенджер</translation>
+    </message>
+    <message>
+        <source>(c) 2019 - 2022, Yury Gubich</source>
+        <translation>(c) 2019 - 2022, Юрий Губич</translation>
+    </message>
+    <message>
+        <source>&lt;a href=&quot;https://git.macaw.me/blue/squawk&quot;&gt;Project site&lt;/a&gt;</source>
+        <translation>&lt;a href=&quot;https://git.macaw.me/blue/squawk&quot;&gt;Сайт проекта&lt;/a&gt;</translation>
+    </message>
+    <message>
+        <source>&lt;a href=&quot;https://git.macaw.me/blue/squawk/src/branch/master/LICENSE.md&quot;&gt;License: GNU General Public License version 3&lt;/a&gt;</source>
+        <translation>&lt;a href=&quot;https://git.macaw.me/blue/squawk/src/branch/master/LICENSE.md&quot;&gt;Лицензия: GNU General Public License версия 3&lt;/a&gt;</translation>
+    </message>
+    <message>
+        <source>Components</source>
+        <translation>Компоненты</translation>
+    </message>
+    <message>
+        <source>Version</source>
+        <translation>Версия</translation>
+    </message>
+    <message>
+        <source>0.0.0</source>
+        <translation>0.0.0</translation>
+    </message>
+    <message>
+        <source>Report Bugs</source>
+        <translation>Сообщать об ошибках</translation>
+    </message>
+    <message>
+        <source>Please report any bug you find!
+To report bugs you can use:</source>
+        <translation>Пожалуйста, сообщайте о любых ошибках!
+Способы сообщить об ошибках:</translation>
+    </message>
+    <message>
+        <source>&lt;a href=&quot;https://git.macaw.me/blue/squawk/issues&quot;&gt;Project bug tracker&lt;/&gt;</source>
+        <translation>&lt;a href=&quot;https://git.macaw.me/blue/squawk/issues&quot;&gt;Баг-трекер проекта&lt;/&gt;</translation>
+    </message>
+    <message>
+        <source>XMPP (&lt;a href=&quot;xmpp:blue@macaw.me&quot;&gt;blue@macaw.me&lt;/a&gt;)</source>
+        <translation>XMPP (&lt;a href=&quot;xmpp:blue@macaw.me&quot;&gt;blue@macaw.me&lt;/a&gt;)</translation>
+    </message>
+    <message>
+        <source>E-Mail (&lt;a href=&quot;mailto:blue@macaw.me&quot;&gt;blue@macaw.me&lt;/a&gt;)</source>
+        <translation>E-Mail (&lt;a href=&quot;mailto:blue@macaw.me&quot;&gt;blue@macaw.me&lt;/a&gt;)</translation>
+    </message>
+    <message>
+        <source>Thanks To</source>
+        <translation>Благодарности</translation>
+    </message>
+    <message>
+        <source>Vae</source>
+        <translation>Vae</translation>
+    </message>
+    <message>
+        <source>Major refactoring, bug fixes, constructive criticism</source>
+        <translation>Крупный рефакторинг, исправление ошибок, конструктивная критика</translation>
+    </message>
+    <message>
+        <source>Shunf4</source>
+        <translation>Shunf4</translation>
+    </message>
+    <message>
+        <source>Major refactoring, bug fixes, build adaptations for Windows and MacOS</source>
+        <translation>Крупный рефакторинг, исправление ошибок, адаптация сборки под Windows and MacOS</translation>
+    </message>
+    <message>
+        <source>Bruno F. Fontes</source>
+        <translation>Bruno F. Fontes</translation>
+    </message>
+    <message>
+        <source>Brazilian Portuguese translation</source>
+        <translation>Перевод на Португальский (Бразилия)</translation>
+    </message>
+    <message>
+        <source>(built against %1)</source>
+        <translation>(версия при сборке %1)</translation>
+    </message>
+    <message>
+        <source>License</source>
+        <translation>Лицензия</translation>
+    </message>
+</context>
 <context>
     <name>Account</name>
     <message>
@@ -10,10 +112,12 @@
     </message>
     <message>
         <source>Your account login</source>
+        <translatorcomment>Tooltip</translatorcomment>
         <translation>Имя пользователя Вашей учетной записи</translation>
     </message>
     <message>
         <source>john_smith1987</source>
+        <translatorcomment>Login placeholder</translatorcomment>
         <translation>ivan_ivanov1987</translation>
     </message>
     <message>
@@ -22,10 +126,12 @@
     </message>
     <message>
         <source>A server address of your account. Like 404.city or macaw.me</source>
+        <translatorcomment>Tooltip</translatorcomment>
         <translation>Адресс сервера вашей учетной записи (выглядит как 404.city или macaw.me)</translation>
     </message>
     <message>
         <source>macaw.me</source>
+        <translatorcomment>Placeholder</translatorcomment>
         <translation>macaw.me</translation>
     </message>
     <message>
@@ -38,6 +144,7 @@
     </message>
     <message>
         <source>Password of your account</source>
+        <translatorcomment>Tooltip</translatorcomment>
         <translation>Пароль вашей учетной записи</translation>
     </message>
     <message>
@@ -46,10 +153,11 @@
     </message>
     <message>
         <source>Just a name how would you call this account, doesn&apos;t affect anything</source>
-        <translation>Просто имя, то как Вы называете свою учетную запись, может быть любым</translation>
+        <translation>Просто имя, то как Вы называете свою учетную запись, может быть любым (нельзя поменять)</translation>
     </message>
     <message>
         <source>John</source>
+        <translatorcomment>Placeholder</translatorcomment>
         <translation>Иван</translation>
     </message>
     <message>
@@ -58,6 +166,7 @@
     </message>
     <message>
         <source>A resource name like &quot;Home&quot; or &quot;Work&quot;</source>
+        <translatorcomment>Tooltip</translatorcomment>
         <translation>Имя этой программы для ваших контактов, может быть &quot;Home&quot; или &quot;Phone&quot;</translation>
     </message>
     <message>
@@ -69,6 +178,14 @@
         <source>Password storage</source>
         <translation>Хранение пароля</translation>
     </message>
+    <message>
+        <source>Active</source>
+        <translation>Активен</translation>
+    </message>
+    <message>
+        <source>enable</source>
+        <translation>включен</translation>
+    </message>
 </context>
 <context>
     <name>Accounts</name>
@@ -98,30 +215,139 @@
     </message>
     <message>
         <source>Disconnect</source>
-        <translation>Отключить</translation>
+        <translation type="vanished">Отключить</translation>
+    </message>
+    <message>
+        <source>Deactivate</source>
+        <translation>Деактивировать</translation>
+    </message>
+    <message>
+        <source>Activate</source>
+        <translation>Активировать</translation>
+    </message>
+</context>
+<context>
+    <name>Application</name>
+    <message>
+        <source> from </source>
+        <translation> от </translation>
+    </message>
+    <message>
+        <source>Attached file</source>
+        <translation>Прикрепленный файл</translation>
+    </message>
+    <message>
+        <source>Mark as Read</source>
+        <translation>Пометить прочитанным</translation>
+    </message>
+    <message>
+        <source>Open conversation</source>
+        <translation>Открыть окно беседы</translation>
     </message>
 </context>
 <context>
     <name>Conversation</name>
     <message>
         <source>Type your message here...</source>
+        <translatorcomment>Placeholder</translatorcomment>
         <translation>Введите сообщение...</translation>
     </message>
     <message>
         <source>Chose a file to send</source>
         <translation>Выберите файл для отправки</translation>
     </message>
+    <message>
+        <source>Drop files here to attach them to your message</source>
+        <translation>Бросьте файлы сюда для того что бы прикрепить их к сообщению</translation>
+    </message>
     <message>
         <source>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
 &lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
 p, li { white-space: pre-wrap; }
-&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:&apos;Liberation Sans&apos;; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;
+&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:&apos;Noto Sans&apos;; font-size:8pt; font-weight:400; font-style:normal;&quot;&gt;
 &lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;br /&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</source>
-        <translation></translation>
+        <translation>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
+&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
+p, li { white-space: pre-wrap; }
+&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:&apos;Noto Sans&apos;; font-size:8pt; font-weight:400; font-style:normal;&quot;&gt;
+&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;br /&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</translation>
     </message>
     <message>
-        <source>Drop files here to attach them to your message</source>
-        <translation>Бросьте файлы сюда для того что бы прикрепить их к сообщению</translation>
+        <source>Paste Image</source>
+        <translation>Вставить изображение</translation>
+    </message>
+    <message>
+        <source>Try sending again</source>
+        <translation>Отправить снова</translation>
+    </message>
+    <message>
+        <source>Copy selected</source>
+        <translation>Скопировать выделенное</translation>
+    </message>
+    <message>
+        <source>Copy message</source>
+        <translation>Скопировать сообщение</translation>
+    </message>
+    <message>
+        <source>Open</source>
+        <translation>Открыть</translation>
+    </message>
+    <message>
+        <source>Show in folder</source>
+        <translation>Показать в проводнике</translation>
+    </message>
+    <message>
+        <source>Edit</source>
+        <translation>Редактировать</translation>
+    </message>
+    <message>
+        <source>Editing message...</source>
+        <translation>Сообщение редактируется...</translation>
+    </message>
+</context>
+<context>
+    <name>CredentialsPrompt</name>
+    <message>
+        <source>Authentication error: %1</source>
+        <translatorcomment>Window title</translatorcomment>
+        <translation>Ошибка аутентификации: %1</translation>
+    </message>
+    <message>
+        <source>Couldn&apos;t authenticate account %1: login or password is icorrect.
+Would you like to check them and try again?</source>
+        <translation>Не получилось аутентифицировать
+учетную запись %1:
+имя пользователя или пароль введены неверно.
+Желаете ли проверить их и
+попробовать аутентифицироваться еще раз?</translation>
+    </message>
+    <message>
+        <source>Login</source>
+        <translation>Имя учетной записи</translation>
+    </message>
+    <message>
+        <source>Your account login (without @server.domain)</source>
+        <translatorcomment>Tooltip</translatorcomment>
+        <translation>Имя вашей учтетной записи (без @server.domain)</translation>
+    </message>
+    <message>
+        <source>Password</source>
+        <translation>Пароль</translation>
+    </message>
+    <message>
+        <source>Your password</source>
+        <translation>Ваш пароль</translation>
+    </message>
+</context>
+<context>
+    <name>DialogQueue</name>
+    <message>
+        <source>Input the password for account %1</source>
+        <translation>Введите пароль для учетной записи %1</translation>
+    </message>
+    <message>
+        <source>Password for account %1</source>
+        <translation>Пароль для учетной записи %1</translation>
     </message>
 </context>
 <context>
@@ -370,44 +596,44 @@ p, li { white-space: pre-wrap; }
     <name>Message</name>
     <message>
         <source>Open</source>
-        <translation>Открыть</translation>
+        <translation type="vanished">Открыть</translation>
     </message>
 </context>
 <context>
     <name>MessageLine</name>
     <message>
         <source>Downloading...</source>
-        <translation>Скачивается...</translation>
+        <translation type="vanished">Скачивается...</translation>
     </message>
     <message>
         <source>Download</source>
         <translation>Скачать</translation>
     </message>
-    <message>
-        <source>Push the button to daownload the file</source>
-        <translation>Нажмите на кнопку что бы загрузить файл</translation>
-    </message>
     <message>
         <source>Error uploading file: %1
 You can try again</source>
-        <translation>Ошибка загрузки файла на сервер:
+        <translation type="vanished">Ошибка загрузки файла на сервер:
 %1
 Для того, что бы попробовать снова нажмите на кнопку</translation>
     </message>
     <message>
         <source>Upload</source>
-        <translation>Загрузить</translation>
+        <translation type="vanished">Загрузить</translation>
     </message>
     <message>
         <source>Error downloading file: %1
 You can try again</source>
-        <translation>Ошибка скачивания файла: 
+        <translation type="vanished">Ошибка скачивания файла: 
 %1
 Вы можете попробовать снова</translation>
     </message>
     <message>
         <source>Uploading...</source>
-        <translation>Загружается...</translation>
+        <translation type="vanished">Загружается...</translation>
+    </message>
+    <message>
+        <source>Push the button to download the file</source>
+        <translation type="vanished">Нажмите на кнопку что бы загрузить файл</translation>
     </message>
 </context>
 <context>
@@ -481,7 +707,7 @@ You can try again</source>
     <name>NewContact</name>
     <message>
         <source>Add new contact</source>
-        <translatorcomment>Заголовок окна</translatorcomment>
+        <translatorcomment>Window title</translatorcomment>
         <translation>Добавление нового контакта</translation>
     </message>
     <message>
@@ -502,7 +728,7 @@ You can try again</source>
     </message>
     <message>
         <source>name@server.dmn</source>
-        <translatorcomment>Placeholder поля ввода JID</translatorcomment>
+        <translatorcomment>Placeholder</translatorcomment>
         <translation>name@server.dmn</translation>
     </message>
     <message>
@@ -518,6 +744,64 @@ You can try again</source>
         <translation>Иван Иванов</translation>
     </message>
 </context>
+<context>
+    <name>PageAppearance</name>
+    <message>
+        <source>Theme</source>
+        <translation>Оформление</translation>
+    </message>
+    <message>
+        <source>Color scheme</source>
+        <translation>Цветовая схема</translation>
+    </message>
+    <message>
+        <source>System</source>
+        <translation>Системная</translation>
+    </message>
+</context>
+<context>
+    <name>PageGeneral</name>
+    <message>
+        <source>Downloads path</source>
+        <translation>Папка для сохраненных файлов</translation>
+    </message>
+    <message>
+        <source>Browse</source>
+        <translation>Выбрать</translation>
+    </message>
+    <message>
+        <source>Select where downloads folder is going to be</source>
+        <translation>Выберете папку, в которую будут сохраняться файлы</translation>
+    </message>
+</context>
+<context>
+    <name>Settings</name>
+    <message>
+        <source>Preferences</source>
+        <translatorcomment>Window title</translatorcomment>
+        <translation>Настройки</translation>
+    </message>
+    <message>
+        <source>General</source>
+        <translation>Общее</translation>
+    </message>
+    <message>
+        <source>Appearance</source>
+        <translation>Внешний вид</translation>
+    </message>
+    <message>
+        <source>Apply</source>
+        <translation>Применить</translation>
+    </message>
+    <message>
+        <source>Cancel</source>
+        <translation>Отменить</translation>
+    </message>
+    <message>
+        <source>Ok</source>
+        <translation>Готово</translation>
+    </message>
+</context>
 <context>
     <name>Squawk</name>
     <message>
@@ -530,6 +814,7 @@ You can try again</source>
     </message>
     <message>
         <source>Squawk</source>
+        <translatorcomment>Menu bar entry</translatorcomment>
         <translation>Squawk</translation>
     </message>
     <message>
@@ -548,17 +833,13 @@ You can try again</source>
         <source>Add conference</source>
         <translation>Присоединиться к беседе</translation>
     </message>
-    <message>
-        <source>Contact list</source>
-        <translation>Список контактов</translation>
-    </message>
     <message>
         <source>Disconnect</source>
-        <translation>Отключить</translation>
+        <translation type="vanished">Отключить</translation>
     </message>
     <message>
         <source>Connect</source>
-        <translation>Подключить</translation>
+        <translation type="vanished">Подключить</translation>
     </message>
     <message>
         <source>VCard</source>
@@ -631,20 +912,40 @@ to be displayed as %1</source>
     </message>
     <message>
         <source>Attached file</source>
-        <translation>Прикрепленный файл</translation>
+        <translation type="vanished">Прикрепленный файл</translation>
     </message>
     <message>
         <source>Input the password for account %1</source>
-        <translation>Введите пароль для учетной записи %1</translation>
+        <translation type="vanished">Введите пароль для учетной записи %1</translation>
     </message>
     <message>
         <source>Password for account %1</source>
-        <translation>Пароль для учетной записи %1</translation>
+        <translation type="vanished">Пароль для учетной записи %1</translation>
     </message>
     <message>
         <source>Please select a contact to start chatting</source>
         <translation>Выберите контакт или группу что бы начать переписку</translation>
     </message>
+    <message>
+        <source>Help</source>
+        <translation>Помощь</translation>
+    </message>
+    <message>
+        <source>Preferences</source>
+        <translation>Настройки</translation>
+    </message>
+    <message>
+        <source>About Squawk</source>
+        <translation>О Программе Squawk</translation>
+    </message>
+    <message>
+        <source>Deactivate</source>
+        <translation>Деактивировать</translation>
+    </message>
+    <message>
+        <source>Activate</source>
+        <translation>Активировать</translation>
+    </message>
 </context>
 <context>
     <name>VCard</name>

ui/CMakeLists.txt

@@ -1,44 +1,9 @@
-cmake_minimum_required(VERSION 3.0)
-project(squawkUI)
-
-# Instruct CMake to run moc automatically when needed.
-set(CMAKE_AUTOMOC ON)
-# Instruct CMake to create code from Qt designer ui files
-set(CMAKE_AUTOUIC ON)
-
-# Find the QtWidgets library
-find_package(Qt5Widgets CONFIG REQUIRED)
-find_package(Qt5DBus CONFIG REQUIRED)
-
-add_subdirectory(widgets)
-
-set(squawkUI_SRC
-  squawk.cpp
-  models/accounts.cpp
-  models/roster.cpp
-  models/item.cpp
-  models/account.cpp
-  models/contact.cpp
-  models/presence.cpp
-  models/group.cpp
-  models/room.cpp
-  models/abstractparticipant.cpp
-  models/participant.cpp
-  utils/messageline.cpp
-  utils//message.cpp
-  utils/resizer.cpp
-  utils/image.cpp
-  utils/flowlayout.cpp
-  utils/badge.cpp
-  utils/progress.cpp
-  utils/comboboxdelegate.cpp
-  utils/dropshadoweffect.cpp
+target_sources(squawk PRIVATE
+    squawk.cpp
+    squawk.h
+    squawk.ui
 )
 
-# Tell CMake to create the helloworld executable
-add_library(squawkUI ${squawkUI_SRC})
-
-# Use the Widgets module from Qt 5.
-target_link_libraries(squawkUI squawkWidgets)
-target_link_libraries(squawkUI Qt5::Widgets)
-target_link_libraries(squawkUI Qt5::DBus)
+add_subdirectory(models)
+add_subdirectory(utils)
+add_subdirectory(widgets)

ui/models/CMakeLists.txt

@@ -0,0 +1,26 @@
+target_sources(squawk PRIVATE
+  abstractparticipant.cpp
+  abstractparticipant.h
+  account.cpp
+  account.h
+  accounts.cpp
+  accounts.h
+  contact.cpp
+  contact.h
+  element.cpp
+  element.h
+  group.cpp
+  group.h
+  item.cpp
+  item.h
+  participant.cpp
+  participant.h
+  presence.cpp
+  presence.h
+  reference.cpp
+  reference.h
+  room.cpp
+  room.h
+  roster.cpp
+  roster.h
+  )

ui/models/account.cpp

@@ -17,6 +17,8 @@
  */
 
 #include "account.h"
+#include "contact.h"
+#include "reference.h"
 #include <QDebug>
 
 Models::Account::Account(const QMap<QString, QVariant>& data, Models::Item* parentItem):
@@ -29,7 +31,9 @@ Models::Account::Account(const QMap<QString, QVariant>& data, Models::Item* pare
     avatarPath(data.value("avatarPath").toString()),
     state(Shared::ConnectionState::disconnected),
     availability(Shared::Availability::offline),
-    passwordType(Shared::AccountPassword::plain)
+    passwordType(Shared::AccountPassword::plain),
+    wasEverConnected(false),
+    active(false)
 {
     QMap<QString, QVariant>::const_iterator sItr = data.find("state");
     if (sItr != data.end()) {
@@ -43,6 +47,10 @@ Models::Account::Account(const QMap<QString, QVariant>& data, Models::Item* pare
     if (pItr != data.end()) {
         setPasswordType(pItr.value().toUInt());
     }
+    QMap<QString, QVariant>::const_iterator acItr = data.find("active");
+    if (acItr != data.end()) {
+        setActive(acItr.value().toBool());
+    }
 }
 
 Models::Account::~Account()
@@ -54,8 +62,19 @@ void Models::Account::setState(Shared::ConnectionState p_state)
     if (state != p_state) {
         state = p_state;
         changed(2);
-        if (state == Shared::ConnectionState::disconnected) {
-            toOfflineState();
+        switch (state) {
+            case Shared::ConnectionState::disconnected:
+                toOfflineState();
+                break;
+            case Shared::ConnectionState::connected:
+                if (wasEverConnected) {
+                    emit reconnected();
+                } else {
+                    wasEverConnected = true;
+                }
+                break;
+            default:
+                break;
         }
     }
 }
@@ -162,6 +181,8 @@ QVariant Models::Account::data(int column) const
             return avatarPath;
         case 9:
             return Shared::Global::getName(passwordType);
+        case 10:
+            return active;
         default:
             return QVariant();
     }
@@ -169,7 +190,7 @@ QVariant Models::Account::data(int column) const
 
 int Models::Account::columnCount() const
 {
-    return 10;
+    return 11;
 }
 
 void Models::Account::update(const QString& field, const QVariant& value)
@@ -194,6 +215,8 @@ void Models::Account::update(const QString& field, const QVariant& value)
         setAvatarPath(value.toString());
     } else if (field == "passwordType") {
         setPasswordType(value.toUInt());
+    } else if (field == "active") {
+        setActive(value.toBool());
     }
 }
 
@@ -229,7 +252,7 @@ void Models::Account::toOfflineState()
     Item::toOfflineState();
 }
 
-QString Models::Account::getAvatarPath()
+QString Models::Account::getAvatarPath() const
 {
     return avatarPath;
 }
@@ -268,3 +291,15 @@ void Models::Account::setPasswordType(unsigned int pt)
     setPasswordType(Shared::Global::fromInt<Shared::AccountPassword>(pt));
 }
 
+bool Models::Account::getActive() const
+{
+    return active;
+}
+
+void Models::Account::setActive(bool p_active)
+{
+    if (active != p_active) {
+        active = p_active;
+        changed(10);
+    }
+}

ui/models/account.h

@@ -28,6 +28,9 @@
 #include <QIcon>
 
 namespace Models {
+    class Contact;
+    class Reference;
+    
     class Account : public Item {
         Q_OBJECT
     public:
@@ -54,7 +57,10 @@ namespace Models {
         QString getError() const;
         
         void setAvatarPath(const QString& path);
-        QString getAvatarPath();
+        QString getAvatarPath() const;
+
+        void setActive(bool active);
+        bool getActive() const;
         
         void setAvailability(Shared::Availability p_avail);
         void setAvailability(unsigned int p_avail);
@@ -74,6 +80,9 @@ namespace Models {
         QString getBareJid() const;
         QString getFullJid() const;
         
+    signals:
+        void reconnected();
+        
     private:
         QString login;
         QString password;
@@ -84,6 +93,8 @@ namespace Models {
         Shared::ConnectionState state;
         Shared::Availability availability;
         Shared::AccountPassword passwordType;
+        bool wasEverConnected;
+        bool active;
         
     protected slots:
         void toOfflineState() override;

ui/models/accounts.cpp

@@ -48,6 +48,10 @@ QVariant Models::Accounts::data (const QModelIndex& index, int role) const
                 answer = Shared::connectionStateIcon(accs[index.row()]->getState());
             }
             break;
+        case Qt::ForegroundRole:
+            if (!accs[index.row()]->getActive()) {
+                answer = qApp->palette().brush(QPalette::Disabled, QPalette::Text);
+            }
         default:
             break;
     }
@@ -97,7 +101,10 @@ void Models::Accounts::addAccount(Account* account)
 
 void Models::Accounts::onAccountChanged(Item* item, int row, int col)
 {
-    if (row < accs.size()) {
+    if (row < 0) {
+        return;
+    }
+    if (static_cast<std::deque<Models::Account*>::size_type>(row) < accs.size()) {
         Account* acc = getAccount(row);
         if (item != acc) {
             return;     //it means the signal is emitted by one of accounts' children, not exactly him, this model has no interest in that

ui/models/contact.cpp

@@ -20,50 +20,23 @@
 
 #include <QDebug>
 
-Models::Contact::Contact(const QString& p_jid ,const QMap<QString, QVariant> &data, Item *parentItem):
-    Item(Item::contact, data, parentItem),
-    jid(p_jid),
+Models::Contact::Contact(const Account* acc, const QString& p_jid ,const QMap<QString, QVariant> &data, Item *parentItem):
+    Element(Item::contact, acc, p_jid, data, parentItem),
     availability(Shared::Availability::offline),
     state(Shared::SubscriptionState::none),
-    avatarState(Shared::Avatar::empty),
     presences(),
-    messages(),
-    childMessages(0),
-    status(),
-    avatarPath()
+    status()
 {
     QMap<QString, QVariant>::const_iterator itr = data.find("state");
     if (itr != data.end()) {
         setState(itr.value().toUInt());
     }
-    
-    itr = data.find("avatarState");
-    if (itr != data.end()) {
-        setAvatarState(itr.value().toUInt());
-    }
-    itr = data.find("avatarPath");
-    if (itr != data.end()) {
-        setAvatarPath(itr.value().toString());
-    }
 }
 
 Models::Contact::~Contact()
 {
 }
 
-QString Models::Contact::getJid() const
-{
-    return jid;
-}
-
-void Models::Contact::setJid(const QString p_jid)
-{
-    if (jid != p_jid) {
-        jid = p_jid;
-        changed(1);
-    }
-}
-
 void Models::Contact::setAvailability(unsigned int p_state)
 {
     setAvailability(Shared::Global::fromInt<Shared::Availability>(p_state));
@@ -142,16 +115,12 @@ void Models::Contact::update(const QString& field, const QVariant& value)
 {
     if (field == "name") {
         setName(value.toString());
-    } else if (field == "jid") {
-        setJid(value.toString());
     } else if (field == "availability") {
         setAvailability(value.toUInt());
     } else if (field == "state") {
         setState(value.toUInt());
-    } else if (field == "avatarState") {
-        setAvatarState(value.toUInt());
-    } else if (field == "avatarPath") {
-        setAvatarPath(value.toString());
+    } else {
+        Element::update(field, value);
     }
 }
 
@@ -186,15 +155,23 @@ void Models::Contact::removePresence(const QString& name)
     }
 }
 
+Models::Presence * Models::Contact::getPresence(const QString& name)
+{
+    QMap<QString, Presence*>::iterator itr = presences.find(name);
+    if (itr == presences.end()) {
+        return nullptr;
+    } else {
+        return itr.value();
+    }
+}
+
 void Models::Contact::refresh()
 {
     QDateTime lastActivity;
     Presence* presence = 0;
-    unsigned int count = 0;
     for (QMap<QString, Presence*>::iterator itr = presences.begin(), end = presences.end(); itr != end; ++itr) {
         Presence* pr = itr.value();
         QDateTime la = pr->getLastActivity();
-        count += pr->getMessagesCount();
         
         if (la > lastActivity) {
             lastActivity = la;
@@ -209,11 +186,6 @@ void Models::Contact::refresh()
         setAvailability(Shared::Availability::offline);
         setStatus("");
     }
-    
-    if (childMessages != count) {
-        childMessages = count;
-        changed(4);
-    }
 }
 
 void Models::Contact::_removeChild(int index)
@@ -224,9 +196,9 @@ void Models::Contact::_removeChild(int index)
     refresh();
 }
 
-void Models::Contact::appendChild(Models::Item* child)
+void Models::Contact::_appendChild(Models::Item* child)
 {
-    Item::appendChild(child);
+    Item::_appendChild(child);
     connect(child, &Item::childChanged, this, &Contact::refresh);
     refresh();
 }
@@ -255,94 +227,22 @@ QIcon Models::Contact::getStatusIcon(bool big) const
     }
 }
 
-void Models::Contact::addMessage(const Shared::Message& data)
-{
-    const QString& res = data.getPenPalResource();
-    if (res.size() > 0) {
-        QMap<QString, Presence*>::iterator itr = presences.find(res);
-        if (itr == presences.end()) {
-            // this is actually the place when I can spot someone's invisible presence, and there is nothing criminal in it, cuz the sender sent us a message
-            // therefore he have revealed himself
-            // the only issue is to find out when the sender is gone offline
-            Presence* pr = new Presence({});
-            pr->setName(res);
-            pr->setAvailability(Shared::Availability::invisible);
-            pr->setLastActivity(QDateTime::currentDateTimeUtc());
-            presences.insert(res, pr);
-            appendChild(pr);
-            pr->addMessage(data);
-            return;
-        }
-        itr.value()->addMessage(data);
-    } else {
-        messages.emplace_back(data);
-        changed(4);
-    }
-}
-
-void Models::Contact::changeMessage(const QString& id, const QMap<QString, QVariant>& data)
-{
-
-    bool found = false;
-    for (Shared::Message& msg : messages) {
-        if (msg.getId() == id) {
-            msg.change(data);
-            found = true;
-            break;
-        }
-    }
-    if (!found) {
-        for (Presence* pr : presences) {
-            found = pr->changeMessage(id, data);
-            if (found) {
-                break;
-            }
-        }
-    }
-}
-
-unsigned int Models::Contact::getMessagesCount() const
-{
-    return messages.size() + childMessages;
-}
-
-void Models::Contact::dropMessages()
-{
-    if (messages.size() > 0) {
-        messages.clear();
-        changed(4);
-    }
-    
-    for (QMap<QString, Presence*>::iterator itr = presences.begin(), end = presences.end(); itr != end; ++itr) {
-        itr.value()->dropMessages();
-    }
-}
-
-void Models::Contact::getMessages(Models::Contact::Messages& container) const
-{
-    for (Messages::const_iterator itr = messages.begin(), end = messages.end(); itr != end; ++itr) {
-        const Shared::Message& msg = *itr;
-        container.push_back(msg);
-    }
-    
-    for (QMap<QString, Presence*>::const_iterator itr = presences.begin(), end = presences.end(); itr != end; ++itr) {
-        itr.value()->getMessages(container);
-    }
-}
-
 void Models::Contact::toOfflineState()
 {
-    emit childIsAboutToBeRemoved(this, 0, childItems.size());
-    for (std::deque<Item*>::size_type i = 0; i < childItems.size(); ++i) {
-        Item* item = childItems[i];
-        disconnect(item, &Item::childChanged, this, &Contact::refresh);
-        Item::_removeChild(i);
-        item->deleteLater();
+    std::deque<Item*>::size_type size = childItems.size();
+    if (size > 0) {
+        emit childIsAboutToBeRemoved(this, 0, size - 1);
+        for (std::deque<Item*>::size_type i = 0; i < size; ++i) {
+            Item* item = childItems[0];
+            disconnect(item, &Item::childChanged, this, &Contact::refresh);
+            Item::_removeChild(0);
+            item->deleteLater();
+        }
+        childItems.clear();
+        presences.clear();
+        emit childRemoved();
+        refresh();
     }
-    childItems.clear();
-    presences.clear();
-    emit childRemoved();
-    refresh();
 }
 
 QString Models::Contact::getDisplayedName() const
@@ -350,68 +250,9 @@ QString Models::Contact::getDisplayedName() const
     return getContactName();
 }
 
-bool Models::Contact::columnInvolvedInDisplay(int col)
+void Models::Contact::handleRecconnect()
 {
-    return Item::columnInvolvedInDisplay(col) && col == 1;
-}
-
-Models::Contact * Models::Contact::copy() const
-{
-    Contact* cnt = new Contact(*this);
-    return cnt;
-}
-
-Models::Contact::Contact(const Models::Contact& other):
-    Item(other),
-    jid(other.jid),
-    availability(other.availability),
-    state(other.state),
-    presences(),
-    messages(other.messages),
-    childMessages(0)
-{
-    for (const Presence* pres : other.presences) {
-        Presence* pCopy = new Presence(*pres);
-        presences.insert(pCopy->getName(), pCopy);
-        Item::appendChild(pCopy);
-        connect(pCopy, &Item::childChanged, this, &Contact::refresh);
-    }
-    
-    refresh();
-}
-
-QString Models::Contact::getAvatarPath() const
-{
-    return avatarPath;
-}
-
-Shared::Avatar Models::Contact::getAvatarState() const
-{
-    return avatarState;
-}
-
-void Models::Contact::setAvatarPath(const QString& path)
-{
-    if (path != avatarPath) {
-        avatarPath = path;
-        changed(7);
-    }
-}
-
-void Models::Contact::setAvatarState(Shared::Avatar p_state)
-{
-    if (avatarState != p_state) {
-        avatarState = p_state;
-        changed(6);
-    }
-}
-
-void Models::Contact::setAvatarState(unsigned int p_state)
-{
-    if (p_state <= static_cast<quint8>(Shared::Avatar::valid)) {
-        Shared::Avatar state = static_cast<Shared::Avatar>(p_state);
-        setAvatarState(state);
-    } else {
-        qDebug() << "An attempt to set invalid avatar state" << p_state << "to the contact" << jid << ", skipping";
+    if (getMessagesCount() > 0) {
+        feed->requestLatestMessages();
     }
 }

ui/models/contact.h

@@ -19,7 +19,7 @@
 #ifndef MODELS_CONTACT_H
 #define MODELS_CONTACT_H
 
-#include "item.h"
+#include "element.h"
 #include "presence.h"
 #include "shared/enums.h"
 #include "shared/message.h"
@@ -32,46 +32,36 @@
 
 namespace Models {
     
-class Contact : public Item
+class Contact : public Element
 {
     Q_OBJECT
 public:
-    typedef std::deque<Shared::Message> Messages;
-    Contact(const QString& p_jid, const QMap<QString, QVariant> &data, Item *parentItem = 0);
-    Contact(const Contact& other);
+    Contact(const Account* acc, const QString& p_jid, const QMap<QString, QVariant> &data, Item *parentItem = 0);
     ~Contact();
     
-    QString getJid() const;
     Shared::Availability getAvailability() const;
     Shared::SubscriptionState getState() const;
-    Shared::Avatar getAvatarState() const;
-    QString getAvatarPath() const;
+
     QIcon getStatusIcon(bool big = false) const;
     
     int columnCount() const override;
     QVariant data(int column) const override;
         
-    void update(const QString& field, const QVariant& value);
+    void update(const QString& field, const QVariant& value) override;
     
     void addPresence(const QString& name, const QMap<QString, QVariant>& data);
     void removePresence(const QString& name);
+    Presence* getPresence(const QString& name);
     
-    void appendChild(Models::Item * child) override;
     QString getContactName() const;
     QString getStatus() const;
-    
-    void addMessage(const Shared::Message& data);
-    void changeMessage(const QString& id, const QMap<QString, QVariant>& data);
-    unsigned int getMessagesCount() const;
-    void dropMessages();
-    void getMessages(Messages& container) const;
     QString getDisplayedName() const override;
     
-    Contact* copy() const;
+    void handleRecconnect();        //this is a special method Models::Roster calls when reconnect happens
     
 protected:
     void _removeChild(int index) override;
-    bool columnInvolvedInDisplay(int col) override;
+    void _appendChild(Models::Item * child) override;
     
 protected slots:
     void refresh();
@@ -82,22 +72,13 @@ protected:
     void setAvailability(unsigned int p_state);
     void setState(Shared::SubscriptionState p_state);
     void setState(unsigned int p_state);
-    void setAvatarState(Shared::Avatar p_state);
-    void setAvatarState(unsigned int p_state);
-    void setAvatarPath(const QString& path);
-    void setJid(const QString p_jid);
     void setStatus(const QString& p_state);
     
 private:
-    QString jid;
     Shared::Availability availability;
     Shared::SubscriptionState state;
-    Shared::Avatar avatarState;
     QMap<QString, Presence*> presences;
-    Messages messages;
-    unsigned int childMessages;
     QString status;
-    QString avatarPath;
 };
 
 }

ui/models/element.cpp

@@ -0,0 +1,190 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "element.h"
+#include "account.h"
+
+#include <QDebug>
+
+Models::Element::Element(Type p_type, const Models::Account* acc, const QString& p_jid, const QMap<QString, QVariant>& data, Models::Item* parentItem):
+    Item(p_type, data, parentItem),
+    jid(p_jid),
+    avatarPath(),
+    avatarState(Shared::Avatar::empty),
+    account(acc),
+    feed(new MessageFeed(this))
+{
+    connect(feed, &MessageFeed::requestArchive, this, &Element::requestArchive);
+    connect(feed, &MessageFeed::fileDownloadRequest, this, &Element::fileDownloadRequest);
+    connect(feed, &MessageFeed::unreadMessagesCountChanged, this, &Element::onFeedUnreadMessagesCountChanged);
+    connect(feed, &MessageFeed::unnoticedMessage, this, &Element::onFeedUnnoticedMessage);
+    connect(feed, &MessageFeed::localPathInvalid, this, &Element::localPathInvalid);
+    
+    QMap<QString, QVariant>::const_iterator itr = data.find("avatarState");
+    if (itr != data.end()) {
+        setAvatarState(itr.value().toUInt());
+    }
+    itr = data.find("avatarPath");
+    if (itr != data.end()) {
+        setAvatarPath(itr.value().toString());
+    }
+}
+
+Models::Element::~Element()
+{
+    delete feed;
+}
+
+
+QString Models::Element::getJid() const
+{
+    return jid;
+}
+
+void Models::Element::setJid(const QString& p_jid)
+{
+    if (jid != p_jid) {
+        jid = p_jid;
+        changed(1);
+    }
+}
+
+void Models::Element::update(const QString& field, const QVariant& value)
+{
+    if (field == "jid") {
+        setJid(value.toString());
+    } else if (field == "avatarState") {
+        setAvatarState(value.toUInt());
+    } else if (field == "avatarPath") {
+        setAvatarPath(value.toString());
+    }
+}
+
+QString Models::Element::getAvatarPath() const
+{
+    return avatarPath;
+}
+
+Shared::Avatar Models::Element::getAvatarState() const
+{
+    return avatarState;
+}
+
+void Models::Element::setAvatarPath(const QString& path)
+{
+    if (path != avatarPath) {
+        avatarPath = path;
+        if (type == contact) {
+            changed(7);
+        } else if (type == room) {
+            changed(8);
+        }
+    }
+}
+
+void Models::Element::setAvatarState(Shared::Avatar p_state)
+{
+    if (avatarState != p_state) {
+        avatarState = p_state;
+        if (type == contact) {
+            changed(6);
+        } else if (type == room) {
+            changed(7);
+        }
+    }
+}
+
+void Models::Element::setAvatarState(unsigned int p_state)
+{
+    if (p_state <= static_cast<quint8>(Shared::Avatar::valid)) {
+        Shared::Avatar state = static_cast<Shared::Avatar>(p_state);
+        setAvatarState(state);
+    } else {
+        qDebug() << "An attempt to set invalid avatar state" << p_state << "to the element" << jid << ", skipping";
+    }
+}
+
+bool Models::Element::columnInvolvedInDisplay(int col)
+{
+    return Item::columnInvolvedInDisplay(col) && col == 1;
+}
+
+const Models::Account * Models::Element::getParentAccount() const
+{
+    return account;
+}
+
+unsigned int Models::Element::getMessagesCount() const
+{
+    return feed->unreadMessagesCount();
+}
+
+bool Models::Element::markMessageAsRead(const QString& id) const
+{
+    return feed->markMessageAsRead(id);
+}
+
+void Models::Element::addMessage(const Shared::Message& data)
+{
+    feed->addMessage(data);
+}
+
+void Models::Element::changeMessage(const QString& id, const QMap<QString, QVariant>& data)
+{
+    feed->changeMessage(id, data);
+}
+
+void Models::Element::responseArchive(const std::list<Shared::Message> list, bool last)
+{
+    feed->responseArchive(list, last);
+}
+
+bool Models::Element::isRoom() const
+{
+    return type != contact;
+}
+
+void Models::Element::fileProgress(const QString& messageId, qreal value, bool up)
+{
+    feed->fileProgress(messageId, value, up);
+}
+
+void Models::Element::fileComplete(const QString& messageId, bool up)
+{
+    feed->fileComplete(messageId, up);
+}
+
+void Models::Element::fileError(const QString& messageId, const QString& error, bool up)
+{
+    feed->fileError(messageId, error, up);
+}
+
+void Models::Element::onFeedUnreadMessagesCountChanged()
+{
+    emit unreadMessagesCountChanged();
+    if (type == contact) {
+        changed(4);
+    } else if (type == room) {
+        changed(5);
+    }
+}
+
+void Models::Element::onFeedUnnoticedMessage(const Shared::Message& msg)
+{
+    emit unnoticedMessage(getAccountName(), msg);
+}

ui/models/element.h

@@ -0,0 +1,84 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ELEMENT_H
+#define ELEMENT_H
+
+#include "item.h"
+
+#include "ui/widgets/messageline/messagefeed.h"
+
+namespace Models {
+    
+class Element : public Item
+{
+    Q_OBJECT
+protected:
+    Element(Type p_type, const Account* acc, const QString& p_jid, const QMap<QString, QVariant> &data, Item *parentItem = 0);
+    ~Element();
+    
+public:
+    QString getJid() const;
+    Shared::Avatar getAvatarState() const;
+    QString getAvatarPath() const;
+    
+    virtual void update(const QString& field, const QVariant& value);
+    
+    void addMessage(const Shared::Message& data);
+    void changeMessage(const QString& id, const QMap<QString, QVariant>& data);
+    unsigned int getMessagesCount() const;
+    bool markMessageAsRead(const QString& id) const;
+    void responseArchive(const std::list<Shared::Message> list, bool last);
+    bool isRoom() const;
+    void fileProgress(const QString& messageId, qreal value, bool up);
+    void fileError(const QString& messageId, const QString& error, bool up);
+    void fileComplete(const QString& messageId, bool up);
+    
+signals:
+    void requestArchive(const QString& before);
+    void fileDownloadRequest(const QString& url);
+    void unnoticedMessage(const QString& account, const Shared::Message& msg);
+    void unreadMessagesCountChanged();
+    void localPathInvalid(const QString& path);
+    
+protected:
+    void setJid(const QString& p_jid);
+    void setAvatarState(Shared::Avatar p_state);
+    void setAvatarState(unsigned int p_state);
+    void setAvatarPath(const QString& path);
+    bool columnInvolvedInDisplay(int col) override;
+    const Account* getParentAccount() const override;
+    
+protected slots:
+    void onFeedUnreadMessagesCountChanged();
+    void onFeedUnnoticedMessage(const Shared::Message& msg);
+    
+protected:
+    QString jid;
+    QString avatarPath;
+    Shared::Avatar avatarState;
+    
+    const Account* account;
+
+public:
+    MessageFeed* feed;
+};
+
+}
+
+#endif // ELEMENT_H

ui/models/group.cpp

@@ -18,6 +18,7 @@
 
 #include "group.h"
 #include "contact.h"
+#include "reference.h"
 
 Models::Group::Group(const QMap<QString, QVariant>& data, Models::Item* parentItem):
     Item(group, data, parentItem),
@@ -29,9 +30,9 @@ Models::Group::~Group()
 {
 }
 
-void Models::Group::appendChild(Models::Item* child)
+void Models::Group::_appendChild(Models::Item* child)
 {
-    Item::appendChild(child);
+    Item::_appendChild(child);
     connect(child, &Item::childChanged, this, &Group::refresh);
     changed(1);
     refresh();
@@ -82,9 +83,14 @@ void Models::Group::refresh()
 {
     unsigned int newAmount(0);
     
-    for (std::deque<Models::Item*>::const_iterator itr = childItems.begin(), end = childItems.end(); itr != end; ++itr) {
-        Models::Contact* cnt = static_cast<Models::Contact*>(*itr);
-        newAmount += cnt->getMessagesCount();
+    for (Models::Item* item : childItems) {
+        if (item->type == reference) {
+            item = static_cast<Reference*>(item)->dereference();
+        }
+        if (item->type == contact) {
+            Models::Contact* cnt = static_cast<Models::Contact*>(item);
+            newAmount += cnt->getMessagesCount();
+        }
     }
     
     setUnreadMessages(newAmount);
@@ -94,25 +100,17 @@ unsigned int Models::Group::getOnlineContacts() const
 {
     unsigned int amount(0);
     
-    for (std::deque<Models::Item*>::const_iterator itr = childItems.begin(), end = childItems.end(); itr != end; ++itr) {
-        Models::Contact* cnt = static_cast<Models::Contact*>(*itr);
-        if (cnt->getAvailability() != Shared::Availability::offline) {
-            ++amount;
+    for (Models::Item* item : childItems) {
+        if (item->type == reference) {
+            item = static_cast<Reference*>(item)->dereference();
+        }
+        if (item->type == contact) {
+            Models::Contact* cnt = static_cast<Models::Contact*>(item);
+            if (cnt->getAvailability() != Shared::Availability::offline) {
+                ++amount;
+            }
         }
     }
     
     return amount;
 }
-
-bool Models::Group::hasContact(const QString& jid) const
-{
-    for (Models::Item* item : childItems) {
-        if (item->type == Item::contact) {
-            const Contact* cnt = static_cast<const Contact*>(item);
-            if (cnt->getJid() == jid) {
-                return true;
-            }
-        }
-    }
-    return false;
-}

ui/models/group.h

@@ -23,6 +23,8 @@
 
 namespace Models {
 
+class Contact;
+    
 class Group : public Models::Item
 {
     Q_OBJECT
@@ -30,17 +32,15 @@ public:
     Group(const QMap<QString, QVariant> &data, Item *parentItem = 0);
     ~Group();
     
-    void appendChild(Models::Item* child) override;
     int columnCount() const override;
     QVariant data(int column) const override;
     
     unsigned int getUnreadMessages() const;
     unsigned int getOnlineContacts() const;
-    
-    bool hasContact(const QString& jid) const;
 
 protected:
     void _removeChild(int index) override;
+    void _appendChild(Models::Item* child) override;
     void setUnreadMessages(unsigned int amount);
     
 private slots:

ui/models/item.cpp

@@ -18,6 +18,8 @@
 
 #include "item.h"
 #include "account.h"
+#include "reference.h"
+#include "contact.h"
 
 #include <QDebug>
 
@@ -26,7 +28,10 @@ Models::Item::Item(Type p_type, const QMap<QString, QVariant> &p_data, Item *p_p
     type(p_type),
     name(""),
     childItems(),
-    parent(p_parent)
+    parent(p_parent),
+    references(),
+    destroyingByParent(false),
+    destroyingByOriginal(false)
 {
     QMap<QString, QVariant>::const_iterator itr = p_data.find("name");
     if (itr != p_data.end()) {
@@ -45,11 +50,25 @@ Models::Item::Item(const Models::Item& other):
 
 Models::Item::~Item()
 {
-    std::deque<Item*>::const_iterator itr = childItems.begin();
-    std::deque<Item*>::const_iterator end = childItems.end();
+    if (!destroyingByParent) {
+        Item* parent = parentItem();
+        if (parent != nullptr) {
+            if (parent->type == reference) {
+                parent->Item::removeChild(row());
+            } else {
+                parent->removeChild(row());
+            }
+        }
+    }
     
-    for (;itr != end; ++itr) {
-        delete (*itr);
+    for (Reference* ref : references) {
+        ref->destroyingByOriginal = true;
+        delete ref;
+    }
+    
+    for (Item* child : childItems) {
+        child->destroyingByParent = true;
+        delete child;
     }
 }
 
@@ -62,22 +81,35 @@ void Models::Item::setName(const QString& p_name)
 }
 
 void Models::Item::appendChild(Models::Item* child)
+{
+    _appendChild(child);
+}
+
+void Models::Item::_appendChild(Models::Item* child)
 {
     bool moving = false;
     int newRow = 0;
     std::deque<Item*>::const_iterator before = childItems.begin();
+    Type ct = child->type;
+    if (ct == reference) {
+        ct = static_cast<Reference*>(child)->dereference()->type;
+    }
     while (before != childItems.end()) {
         Item* bfr = *before;
-        if (bfr->type > child->type) {
+        Type bt = bfr->type;
+        if (bt == reference) {
+            bt = static_cast<Reference*>(bfr)->dereference()->type;
+        }
+        if (bt > ct) {
             break;
-        } else if (bfr->type == child->type && bfr->getDisplayedName() > child->getDisplayedName()) {
+        } else if (bt == ct && bfr->getDisplayedName() > child->getDisplayedName()) {
             break;
         }
         newRow++;
         before++;
     }
     
-    if (child->parent != 0) {
+    if (child->parent != nullptr) {
         int oldRow = child->row();
         moving = true;
         emit childIsAboutToBeMoved(child->parent, oldRow, oldRow, this, newRow);
@@ -115,7 +147,7 @@ int Models::Item::childCount() const
 
 int Models::Item::row() const
 {
-    if (parent != 0) {
+    if (parent != nullptr) {
         std::deque<Item*>::const_iterator itr = parent->childItems.begin();
         std::deque<Item*>::const_iterator end = parent->childItems.end();
         
@@ -126,7 +158,7 @@ int Models::Item::row() const
         }
     }
     
-    return 0;       //TODO not sure how it helps, i copy-pasted it from the example
+    return -1;       //TODO not sure how it helps
 }
 
 Models::Item * Models::Item::parentItem()
@@ -177,15 +209,14 @@ void Models::Item::_removeChild(int index)
     QObject::disconnect(child, &Item::childMoved, this, &Item::childMoved);
     
     childItems.erase(childItems.begin() + index);
-    child->parent = 0;
+    child->parent = nullptr;
 }
 
 
 void Models::Item::changed(int col)
 {
-    if (parent != 0) {
-        emit childChanged(this, row(), col);
-    }
+    
+    emit childChanged(this, row(), col);
 }
 
 void Models::Item::toOfflineState()
@@ -196,21 +227,21 @@ void Models::Item::toOfflineState()
     }
 }
 
-const Models::Item * Models::Item::getParentAccount() const
+const Models::Account * Models::Item::getParentAccount() const
 {
     const Item* p = this;
     
-    while (p != 0 && p->type != Item::account) {
+    while (p != nullptr && p->type != Item::account) {
         p = p->parentItemConst();
     }
     
-    return p;
+    return static_cast<const Account*>(p);
 }
 
 QString Models::Item::getAccountJid() const
 {
-    const Account* acc = static_cast<const Account*>(getParentAccount());
-    if (acc == 0) {
+    const Account* acc = getParentAccount();
+    if (acc == nullptr) {
         return "";
     }
     return acc->getLogin() + "@" + acc->getServer();
@@ -218,8 +249,8 @@ QString Models::Item::getAccountJid() const
 
 QString Models::Item::getAccountResource() const
 {
-    const Account* acc = static_cast<const Account*>(getParentAccount());
-    if (acc == 0) {
+    const Account* acc = getParentAccount();
+    if (acc == nullptr) {
         return "";
     }
     return acc->getResource();
@@ -227,8 +258,8 @@ QString Models::Item::getAccountResource() const
 
 QString Models::Item::getAccountName() const
 {
-    const Account* acc = static_cast<const Account*>(getParentAccount());
-    if (acc == 0) {
+    const Account* acc = getParentAccount();
+    if (acc == nullptr) {
         return "";
     }
     return acc->getName();
@@ -236,8 +267,8 @@ QString Models::Item::getAccountName() const
 
 Shared::Availability Models::Item::getAccountAvailability() const
 {
-    const Account* acc = static_cast<const Account*>(getParentAccount());
-    if (acc == 0) {
+    const Account* acc = getParentAccount();
+    if (acc == nullptr) {
         return Shared::Availability::offline;
     }
     return acc->getAvailability();
@@ -245,13 +276,22 @@ Shared::Availability Models::Item::getAccountAvailability() const
 
 Shared::ConnectionState Models::Item::getAccountConnectionState() const
 {
-    const Account* acc = static_cast<const Account*>(getParentAccount());
-    if (acc == 0) {
+    const Account* acc = getParentAccount();
+    if (acc == nullptr) {
         return Shared::ConnectionState::disconnected;
     }
     return acc->getState();
 }
 
+QString Models::Item::getAccountAvatarPath() const
+{
+    const Account* acc = getParentAccount();
+    if (acc == nullptr) {
+        return "";
+    }
+    return acc->getAvatarPath();
+}
+
 QString Models::Item::getDisplayedName() const
 {
     return name;
@@ -260,15 +300,24 @@ QString Models::Item::getDisplayedName() const
 void Models::Item::onChildChanged(Models::Item* item, int row, int col)
 {
     Item* parent = item->parentItem();
-    if (parent != 0 && parent == this) {
+    if (parent != nullptr && parent == this) {
         if (item->columnInvolvedInDisplay(col)) {
             int newRow = 0;
             std::deque<Item*>::const_iterator before = childItems.begin();
+            
+            Type ct = item->type;
+            if (ct == reference) {
+                ct = static_cast<Reference*>(item)->dereference()->type;
+            }
             while (before != childItems.end()) {
                 Item* bfr = *before;
-                if (bfr->type > item->type) {
+                Type bt = bfr->type;
+                if (bt == reference) {
+                    bt = static_cast<Reference*>(bfr)->dereference()->type;
+                }
+                if (bt > ct) {
                     break;
-                } else if (bfr->type == item->type && bfr->getDisplayedName() > item->getDisplayedName()) {
+                } else if (bt == ct && bfr->getDisplayedName() > item->getDisplayedName()) {
                     break;
                 }
                 newRow++;
@@ -292,3 +341,42 @@ bool Models::Item::columnInvolvedInDisplay(int col)
 {
     return col == 0;
 }
+
+void Models::Item::addReference(Models::Reference* ref)
+{
+    references.insert(ref);
+}
+
+void Models::Item::removeReference(Models::Reference* ref)
+{
+    std::set<Reference*>::const_iterator itr = references.find(ref);
+    if (itr != references.end()) {
+        references.erase(itr);
+    }
+}
+
+int Models::Item::getContact(const QString& jid) const
+{
+    int index = -1;
+    for (std::deque<Item*>::size_type i = 0; i < childItems.size(); ++i) {
+        const Models::Item* item = childItems[i];
+        const Contact* cnt = nullptr;
+        if (item->type == Item::reference) {
+            item = static_cast<const Reference*>(item)->dereferenceConst();
+        }
+        
+        if (item->type == Item::contact) {
+            cnt = static_cast<const Contact*>(item);
+            if (cnt->getJid() == jid) {
+                index = i;
+                break;
+            }
+        }
+    }
+    return index;
+}
+
+std::set<Models::Reference *>::size_type Models::Item::referencesCount() const
+{
+    return references.size();
+}