#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QSettings>
#include <QCommandLineParser>
#include <QFileInfo>
#include <QDebug>
#include "controllers/NavigationController.h"
#include "MouseEventSpy.h"
#include "EnergySaver.h"

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

    QGuiApplication app(argc, argv);
    QQmlApplicationEngine engine;

    /* Add command line parser to specify a custom config file
     * https://doc.qt.io/qt-5/qcommandlineparser.html
     */
    QCommandLineParser parser;
    parser.setApplicationDescription("Lena's music app");
    // Define a custom config file using -c or --config
    QCommandLineOption configOption(QStringList() << "c" << "config", "Optional: Define custom config file");
    parser.addOption(configOption);

    // process commandline arguments
    parser.process(app);

    QSettings* settings = nullptr;
    if(!parser.value(configOption).isEmpty()){
        // config was handed over via commandline argument. Use this config if file exists.
        QString configFilePath = parser.value(configOption);
        QFileInfo configInfo(configFilePath);
        if(configInfo.exists()){
            settings = new QSettings(configFilePath, QSettings::Format::NativeFormat);
        }
    }
    if(!settings){
        // default config
        settings = new QSettings(QSettings::Scope::UserScope, "MaleyanaSoft", "LenaPi");
    }
    /* Read Settings */

    const auto rootPath = settings->value("rootPath", "/home/ar/source/lenaMusic/").toString(); // path to music files
    const auto profile = settings->value("profile", "RasPiTouch").toString(); // known profiles are "RasPiTouch" and "Desktop"
    const auto isEnergySavingEnabled = settings->value("enableEnergySaver", true).toBool(); // enable/disable energy saver
    const auto energySaverTimeout = settings->value("timeout", 60).toInt(); //timeout in seconds
    const auto shutdownScript = settings->value("shutdownScript", "/usr/local/sbin/do_shutdown.sh").toString();

    NavigationController navController;
    navController.setContext(engine.rootContext());
    navController.init(rootPath);
    navController.setUiProfile(profile);

    if(isEnergySavingEnabled){
        /* install MouseEventSpy and energy saver used for auto shut down of device
         *  if not used for a predefined time.
         */
        MouseEventSpy::init();
        EnergySaver::init(energySaverTimeout, shutdownScript);
        QObject::connect(MouseEventSpy::instance(), &MouseEventSpy::mouseEventDetected,
                         EnergySaver::instance(), &EnergySaver::restartTimer);
    }

    // load GUI
    engine.load(QUrl("qrc:/main.qml"));

    return app.exec();
}