some more thoughts about state management

API/CMakeLists.txt

@@ -1,11 +1,13 @@
 set(HEADERS
     api.h
     codes.h
+    finalaction.h
 )
 
 set(SOURCES
     api.cpp
     codes.cpp
+    finalaction.cpp
 )
 
 target_sources(magpie PRIVATE ${SOURCES})

API/api.cpp

@@ -3,8 +3,10 @@
 #include <QJsonDocument>
 #include <QJsonObject>
 #include <QUrlQuery>
+#include <QTimer>
 
 #include "codes.h"
+#include "finalaction.h"
 
 constexpr const char* json = "application/json";
 constexpr const char* urlEncoded = "application/x-www-form-urlencoded";
@@ -15,7 +17,7 @@ const std::map<QString, QMetaType::Type> testStructure({
 });
 
 const std::map<QString, QMetaType::Type> resultStructure({
-    {"result", QMetaType::Double},
+    {"result", QMetaType::LongLong},
 });
 
 const std::map<QString, QMetaType::Type> tokensStructure({
@@ -47,8 +49,12 @@ API::State API::getState() const {
 void API::setTokens(const QString access, const QString &renew) {
     accessToken = access;
     renewToken = renew;
-    state = Authenticating;
+    setState(Authenticating);
-    emit stateChanged(state);
+
+    //dont forget to remove
+    QTimer::singleShot(1000, this, [this] () {
+        setState(Authenticated);
+    });
 }
 
 void API::setAddress(const QUrl& path) {
@@ -60,10 +66,8 @@ void API::setAddress(const QUrl& path) {
     }
 
     address = path;
-    state = address.isEmpty() ? NoServer : NotAuthenticated;
-
     emit addressChanged(address);
-    emit stateChanged(state);
+    setState(address.isEmpty() ? NoServer : NotAuthenticated);
 }
 
 std::optional<QVariantMap> API::readResult(QNetworkReply* reply) {
@@ -100,6 +104,14 @@ bool API::validateResponse(const std::optional<QVariantMap>& data, const std::ma
     return true;
 }
 
+void API::setState(State newState) {
+    if (newState == state)
+        return;
+
+    state = newState;
+    emit stateChanged(state);
+}
+
 void API::test(const QString& path, const QJSValue& finished) {
     qDebug() << "Testing" << path;
     if (state == Offline)
@@ -177,7 +189,7 @@ void API::sendLogin(const QString& login, const QString& password, const QJSValu
 
     QNetworkRequest request(url);
     request.setHeader(QNetworkRequest::ContentTypeHeader, urlEncoded);
-
+    setState(Authenticating);
     QNetworkReply* reply = network.post(request, params.toString(QUrl::FullyEncoded).toUtf8());
     connect(reply, &QNetworkReply::finished,
             std::bind(&API::onLoginFinished, this, reply, finished)
@@ -208,6 +220,11 @@ void API::onRegisterFinished(QNetworkReply* reply, const QJSValue& finished) con
 }
 
 void API::onLoginFinished(QNetworkReply* reply, const QJSValue& finished) {
+    State state = NotAuthenticated;
+    FinalAction action([this, &state]() {       //this should be executed on leaving the function in any way
+        setState(state);                        //setting the state as a result of this object destruction
+    });                                         //this way any error will result in NotAuthenticated, and on success it should be Authenticated
+
     std::unique_ptr<QNetworkReply, NetworkReplyDeleter> rpl(reply);
     QNetworkReply::NetworkError error = reply->error();
     std::optional<QVariantMap> data = readResult(reply);
@@ -237,7 +254,6 @@ void API::onLoginFinished(QNetworkReply* reply, const QJSValue& finished) {
     accessToken = data->value("accessToken").toString();
     renewToken = data->value("renewToken").toString();
     emit storeTokens(accessToken, renewToken);
-    emit stateChanged(state);
 }
 
 void API::callCallback(const QJSValue& callback, const QString& error, const QJSValueList& arguments) const {

API/api.h

@@ -57,6 +57,7 @@ private:
     void setAddress(const QUrl& path);
     static std::optional<QVariantMap> readResult(QNetworkReply* reply);
     static bool validateResponse(const std::optional<QVariantMap>& data, const std::map<QString, QMetaType::Type>& structure);
+    void setState(State newState);
 
 private:
     QUrl address;

API/finalaction.cpp

@@ -0,0 +1,10 @@
+#include "finalaction.h"
+
+FinalAction::FinalAction(const std::function<void()>& action):
+    action(action)
+{}
+
+FinalAction::~FinalAction() {
+    action();
+}
+

API/finalaction.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <functional>
+
+class FinalAction {
+public:
+    FinalAction(const std::function<void()>& action);
+    ~FinalAction();
+
+    FinalAction() = delete;
+    FinalAction(const FinalAction&) = delete;
+    FinalAction(FinalAction&&) = delete;
+    FinalAction& operator = (const FinalAction&) = delete;
+    FinalAction& operator = (FinalAction&&) = delete;
+
+private:
+    std::function<void()> action;
+};
+

qml/Application/CMakeLists.txt

@@ -0,0 +1,12 @@
+qt_add_qml_module(magpieApplication
+    URI magpie.Application
+    VERSION 1.0
+    STATIC
+    RESOURCE_PREFIX /
+    OUTPUT_DIRECTORY ../magpie/Application
+    NO_PLUGIN
+    QML_FILES
+        Root.qml
+)
+
+target_link_libraries(magpie PRIVATE magpieApplication)

qml/Application/Root.qml

@@ -0,0 +1,13 @@
+import QtQuick
+import QtQuick.Controls
+
+Page {
+    Label {
+        anchors.centerIn: parent
+        text: "Here we go!"
+        font {
+            pixelSize: 24
+            bold: true
+        }
+    }
+}

qml/CMakeLists.txt

@@ -18,3 +18,4 @@ target_link_libraries(magpie PRIVATE magpieQml)
 
 add_subdirectory(Forms)
 add_subdirectory(Components)
+add_subdirectory(Application)

qml/Components/Modal.qml

@@ -2,6 +2,7 @@ import QtQuick
 import QtQuick.Controls
 
 Popup {
+    property bool closable: true
     property bool inProgress: false
     property string status: ""
 
@@ -11,7 +12,7 @@ Popup {
     focus: true
     width: column.width + 60
     height: column.height + 60
-    closePolicy: Popup.CloseOnEscape
+    closePolicy: closable ? Popup.CloseOnEscape : Popup.NoAutoClose
     onClosed: inProgress = false
 
     Column {
@@ -32,11 +33,11 @@ Popup {
         Button {
             text: qsTr("Close")
             anchors.horizontalCenter: parent.horizontalCenter
-            visible: !inProgress
+            visible: closable && !inProgress
             onClicked: modal.close()
             focus: true
             Keys.onReturnPressed: {
-                if (!inProgress)
+                if (closable && !inProgress)
                     modal.close()
             }
         }

qml/Forms/Login.qml

@@ -6,11 +6,13 @@ import magpie.Components as Components
 
 Column {
     signal register()
+    signal loggingIn(value: bool)
 
     function login(login, password) {
         if (modal.inProgress)
             return;
 
+        loggingIn(true);
         loginField.text = login;
         passwordField.text = password;
 
@@ -28,6 +30,7 @@ Column {
             else
                 modal.status = qsTr("Success");
 
+            loggingIn(false);
             if (!!result)
                 modal.close();
         });

qml/Welcome.qml

@@ -4,9 +4,15 @@ import QtQuick.Layouts
 
 import magpie.API
 import magpie.Forms as Forms
+import magpie.Components as Components
 
 Page {
     id: page
+    QtObject {
+      id: priv
+      property bool loggingIn: false
+    }
+
     signal pickServer(address: string)
 
     // title: qsTr("Welcome")
@@ -48,8 +54,15 @@ Page {
             }
         }
 
+        Components.Modal {
+            inProgress: API.state === API.Authenticating
+            visible: !priv.loggingIn && API.state === API.Authenticating
+            closable: API.state === API.NotAuthenticated
+            status: "Logging into " + API.address + "..."
+        }
+
         Item {
-            visible: API.state === API.NotAuthenticated
+            visible: priv.loggingIn || API.state === API.NotAuthenticated || API.state === API.Authenticating
 
             width: page.width
             height: stack.currentItem ? stack.currentItem.implicitHeight: 0
@@ -67,6 +80,9 @@ Page {
                     id: loginForm
                     Forms.Login {
                         onRegister: stack.replace(registerForm)
+                        onLoggingIn: function (value) {
+                            priv.loggingIn = value;
+                        }
                         Component.onCompleted: {
                             if (stack.pendingLogin && stack.pendingPassword)
                                 this.login(stack.pendingLogin, stack.pendingPassword)
@@ -74,6 +90,7 @@ Page {
                             stack.pendingLogin = "";
                             stack.pendingPassword = "";
                         }
+                        Component.onDestruction: priv.loggingIn = false
                     }
                 }
 

qml/main.qml

@@ -5,6 +5,7 @@ import QtQuick.Layouts
 import QtCore
 
 import magpie.API
+import magpie.Application as Application
 
 ApplicationWindow {
     property int counter: 0
@@ -41,6 +42,13 @@ ApplicationWindow {
                 StackView.onDeactivating: pickingServer = false;
             }
         }
+
+        Component {
+            id: app
+            Application.Root {
+
+            }
+        }
     }
 
     Connections {
@@ -49,5 +57,9 @@ ApplicationWindow {
             if (pickingServer && url.toString().length > 0)
                 stack.pop()
         }
+        function onStateChanged (state) {
+            if (state === API.Authenticated)
+                stack.push(app)
+        }
     }
 }

root.cpp

@@ -26,6 +26,11 @@ Root::Root(const QUrl& root, int& argc, char* argv[]) :
     QSettings settings;
     api.setAddress(settings.value("address").toUrl());
 
+    QString acc = settings.value("accessToken").toString();
+    QString ren = settings.value("renewToken").toString();
+    if (!acc.isEmpty() && !ren.isEmpty())
+        api.setTokens(acc, ren);
+
     qRegisterMetaType<API>("API");
     connect(&api, &API::addressChanged, this, &Root::onAPIAddressChanged);
     connect(&api, &API::storeTokens, this, &Root::onStoreTokens);
@@ -72,6 +77,6 @@ void Root::onAPIAddressChanged(const QUrl& url) {
 
 void Root::onStoreTokens(const QString& access, const QString& renew) {
     QSettings settings;
-    settings.setValue("assessToken", access);
+    settings.setValue("accessToken", access);
     settings.setValue("renewToken", renew);
 }