main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlContext>
#include <QProcess>
#include <QtQuickControls2/QQuickStyle>

#include "MapController.h"
#include "FileHandler.h"
#include "backend/dbmanager.h"
#include "DroneController.h"
#include "SettingsManager.h"
#include "missionmanager.h"


int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    // Force a non-native style so customization is supported
    QQuickStyle::setStyle("Basic");

    /*
     * We want to use QQmlApplicationEngine as it provides more resources for our use case
     * https://doc.qt.io/qt-6/qqmlapplicationengine.html
     */


    // If the database doesn't exist, it will create the database. The following code intializes the drones Table.
    DBManager gcs_db_manager;
    gcs_db_manager.initDB();
    qDebug() << "[main.cpp] Database started successfully.";

    // TODO: Intialize and make UI button click reach database

    QQmlApplicationEngine engine;

    // Create and register SettingsManager for persistent per-user settings
    SettingsManager settingsManager;
    engine.rootContext()->setContextProperty("settingsManager", &settingsManager);

    // Create and register MapController as an object that the cpp can use
    MapController mapController;
    engine.rootContext()->setContextProperty("mapController", &mapController);

    // Register the FileHandler class so that it can be used in QML
    qmlRegisterType<FileHandler>("com.gcs.filehandler", 1, 0, "FileHandler");

    // Register droneclass to QML
    qmlRegisterUncreatableType<DroneClass>(
        "com.gcs.dronecontroller", 1, 0, "DroneClass",
        "DroneClass cannot be created from QML");

    // Expose dronecontroller to QML
    qmlRegisterType<DroneController>("com.gcs.dronecontroller", 1, 0, "DroneController");
    DroneController droneController(gcs_db_manager);
    // Populate the QML property cache
    droneController.rebuildVariant();
    // Expose to QML
    engine.rootContext()->setContextProperty("droneController", &droneController);

    MissionManager missionManager;
    engine.rootContext()->setContextProperty("missionManager", &missionManager);

    QObject::connect(&missionManager, &MissionManager::navigateToNext,
                     &droneController, &DroneController::sendToCoordByUavID);

    const QUrl url(QStringLiteral("qrc:/main.qml"));
    /*
     * main.qml is our entry point for all of our UI/GUI resources.
     * It calls all of our QML files needed to create and display our GUI
     * As such, it allows for us to create very modular UI displays
     */

    // Creates the root object, which is the engine that runs the program
    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated, &app, [url](QObject *obj, const QUrl &objUrl)
                     {
                         if (!obj && url == objUrl)
                             QCoreApplication::exit(-1); }, Qt::QueuedConnection);
    engine.load(url);

    return app.exec();
}