[Linux] Add reopen to tray options, enhance app tray, add ability to detect duplicate app instances, prevent duplicate app instances, and allow for original instance to be brought to front using the sockets

linux/main.cpp

@@ -1,5 +1,6 @@
 #include <QSettings>
-
+#include <QLocalServer>
+#include <QLocalSocket>
 #include "main.h"
 #include "airpods_packets.h"
 #include "logger.h"
@@ -38,7 +39,7 @@ class AirPodsTrayApp : public QObject {
     Q_PROPERTY(bool hideOnStart READ hideOnStart CONSTANT)
 
 public:
-    AirPodsTrayApp(bool debugMode, bool hideOnStart, QObject *parent = nullptr)
+    AirPodsTrayApp(bool debugMode, bool hideOnStart, QQmlApplicationEngine *parent = nullptr)
       : QObject(parent)
       , debugMode(debugMode)
       , m_battery(new Battery(this)) 
@@ -46,6 +47,7 @@ public:
       , m_settings(new QSettings("AirPodsTrayApp", "AirPodsTrayApp"))
       , m_autoStartManager(new AutoStartManager(this))
       , m_hideOnStart(hideOnStart)
+      , parent(parent)
       {
         if (debugMode) {
             QLoggingCategory::setFilterRules("airpodsApp.debug=true");
@@ -58,6 +60,8 @@ public:
         trayManager = new TrayIconManager(this);
         trayManager->setNotificationsEnabled(loadNotificationsEnabled());
         connect(trayManager, &TrayIconManager::trayClicked, this, &AirPodsTrayApp::onTrayIconActivated);
+        connect(trayManager, &TrayIconManager::openApp, this, &AirPodsTrayApp::onOpenApp);
+        connect(trayManager, &TrayIconManager::openSettings, this, &AirPodsTrayApp::onOpenSettings);
         connect(trayManager, &TrayIconManager::noiseControlChanged, this, qOverload<NoiseControlMode>(&AirPodsTrayApp::setNoiseControlMode));
         connect(trayManager, &TrayIconManager::conversationalAwarenessToggled, this, &AirPodsTrayApp::setConversationalAwareness);
         connect(this, &AirPodsTrayApp::batteryStatusChanged, trayManager, &TrayIconManager::updateBatteryStatus);
@@ -146,6 +150,9 @@ public:
 private:
     bool debugMode;
     bool isConnectedLocally = false;
+
+    QQmlApplicationEngine *parent = nullptr;
+
     struct {
         bool isAvailable = true;
         bool isEnabled = true; // Ability to disable the feature
@@ -352,6 +359,30 @@ private slots:
         }
     }
 
+    void onOpenApp()
+    {
+        QObject *rootObject = parent->rootObjects().first();
+        if (rootObject) {
+            QMetaObject::invokeMethod(rootObject, "reopen", Q_ARG(QVariant, "app"));
+        }
+        else
+        {
+            parent->loadFromModule("linux", "Main");
+        }
+    }
+
+    void onOpenSettings()
+    {
+        QObject *rootObject = parent->rootObjects().first();
+        if (rootObject) {
+            QMetaObject::invokeMethod(rootObject, "reopen", Q_ARG(QVariant, "settings"));
+        }
+        else
+        {
+            parent->loadFromModule("linux", "Main");
+        }
+    }
+
     void sendHandshake() {
         LOG_INFO("Connected to device, sending initial packets");
         writePacketToSocket(AirPodsPackets::Connection::HANDSHAKE, "Handshake packet written: ");
@@ -918,6 +949,25 @@ private:
 
 int main(int argc, char *argv[]) {
     QApplication app(argc, argv);
+
+    // Check if app is already open
+    QSharedMemory sharedMemory;
+    sharedMemory.setKey("TcpServer-Key");
+    if(sharedMemory.create(1) == false) 
+    {
+        LOG_INFO("Another instance already running! Opening App Window Instead");
+        QLocalSocket socket;
+        // Connect to the original app, then trigger the reopen signal
+        socket.connectToServer("app_server");
+        if (socket.waitForConnected(500)) {
+            socket.write("reopen");
+            socket.flush();
+            socket.waitForBytesWritten(500);
+            socket.disconnectFromServer();
+        }
+        app.exit(); // exit already a process running
+        return 0;
+    }
     app.setQuitOnLastWindowClosed(false);
 
     bool debugMode = false;
@@ -935,6 +985,30 @@ int main(int argc, char *argv[]) {
     AirPodsTrayApp *trayApp = new AirPodsTrayApp(debugMode, hideOnStart, &engine);
     engine.rootContext()->setContextProperty("airPodsTrayApp", trayApp);
     engine.loadFromModule("linux", "Main");
+
+    QLocalServer server;
+    QLocalServer::removeServer("app_server");
+
+    server.listen("app_server");
+    QObject::connect(&server, &QLocalServer::newConnection, [&]() {
+        QLocalSocket* socket = server.nextPendingConnection();
+        QObject::connect(socket, &QLocalSocket::readyRead, [socket, &engine]() {
+            QString msg = socket->readAll();
+            // Check if the message is "reopen", if so, trigger onOpenApp function
+            if (msg == "reopen") {
+                LOG_INFO("Reopening app window");
+                QObject *rootObject = engine.rootObjects().first();
+                if (rootObject) {
+                    QMetaObject::invokeMethod(rootObject, "reopen", Q_ARG(QVariant, "app"));
+                }
+                else
+                {
+                    engine.loadFromModule("linux", "Main");
+                }
+            }
+            socket->disconnectFromServer();
+        });
+    });
     return app.exec();
 }