cmake_minimum_required(VERSION 3.16)

project(LMDBAL VERSION 0.2.0 LANGUAGES CXX)
string(TOLOWER ${PROJECT_NAME} PROJECT_LOW)

cmake_policy(SET CMP0076 NEW)
cmake_policy(SET CMP0079 NEW)

option(BUILD_STATIC "Builds library as static library" OFF)
option(BUILD_TESTS "Builds tests" OFF)
option(BUILD_DOC "Builds documentation" OFF)

include(GNUInstallDirs)
include(CMakePackageConfigHelpers)

set(CMAKE_AUTOMOC ON)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")

if (NOT DEFINED QT_VERSION_MAJOR)
  find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Core)
endif()
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Core)

find_package(LMDB REQUIRED)

# Build type
if (NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE Debug)
endif ()

if (BUILD_STATIC)
  add_library(${PROJECT_NAME} STATIC)
else ()
  add_library(${PROJECT_NAME} SHARED)
endif()

set_property(TARGET ${PROJECT_NAME} PROPERTY VERSION ${version})
set_property(TARGET ${PROJECT_NAME} PROPERTY SOVERSION 1)
set_property(TARGET ${PROJECT_NAME} PROPERTY
  INTERFACE_${PROJECT_NAME}_MAJOR_VERSION 1)
set_property(TARGET ${PROJECT_NAME} APPEND PROPERTY
  COMPATIBLE_INTERFACE_STRING ${PROJECT_NAME}_MAJOR_VERSION
)

add_subdirectory(src)
if (BUILD_DOC)
  find_package(Doxygen)
  if (DOXYGEN_FOUND)
    add_subdirectory(doc)
  else()
    message("Was trying to build documentation, but Doxygen was not found, skipping documentation")
  endif()
endif()

if (BUILD_TESTS)
  add_subdirectory(test)
endif ()

target_include_directories(${PROJECT_NAME} PUBLIC
                           "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>"
                           "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_LOW}>"
)
target_include_directories(${PROJECT_NAME} PRIVATE ${Qt${QT_VERSION_MAJOR}_INCLUDE_DIRS})
target_include_directories(${PROJECT_NAME} PRIVATE ${Qt${QT_VERSION_MAJOR}Core_INCLUDE_DIRS})

target_link_libraries(${PROJECT_NAME} PRIVATE
                      Qt${QT_VERSION_MAJOR}::Core
                      lmdb
)

configure_package_config_file(
    ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Config.cmake.in
    "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_LOW}Config.cmake"
    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_LOW}
)

write_basic_package_version_file(
    "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_LOW}ConfigVersion.cmake"
    VERSION "${version}"
    COMPATIBILITY AnyNewerVersion
)

install(TARGETS ${PROJECT_NAME}
        EXPORT ${PROJECT_LOW}Targets
        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}/${PROJECT_LOW}
        INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_LOW}
)

install(EXPORT ${PROJECT_LOW}Targets
        FILE ${PROJECT_LOW}Targets.cmake
        NAMESPACE ${PROJECT_NAME}::
        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_LOW}
)

install(FILES
          "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_LOW}Config.cmake"
          "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_LOW}ConfigVersion.cmake"
        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_LOW}
)