#include <QApplication>
#include <QFontDatabase>
#include <QCommandLineParser>
#include <QMessageBox>
#include <QTranslator>
#include <QTimer>
#include <QLoggingCategory>
#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlContext>
#include "ui/uilogic.h"
#include <QDebug>

#include "ui/pages.h"

#include "ui/pages_logic/AppSettingsLogic.h"
#include "ui/pages_logic/GeneralSettingsLogic.h"
#include "ui/pages_logic/NetworkSettingsLogic.h"
#include "ui/pages_logic/NewServerProtocolsLogic.h"
#include "ui/pages_logic/QrDecoderLogic.h"
#include "ui/pages_logic/ServerConfiguringProgressLogic.h"
#include "ui/pages_logic/ServerContainersLogic.h"
#include "ui/pages_logic/ServerListLogic.h"
#include "ui/pages_logic/ServerSettingsLogic.h"
#include "ui/pages_logic/ServerContainersLogic.h"
#include "ui/pages_logic/ShareConnectionLogic.h"
#include "ui/pages_logic/SitesLogic.h"
#include "ui/pages_logic/StartPageLogic.h"
#include "ui/pages_logic/VpnLogic.h"
#include "ui/pages_logic/WizardLogic.h"

#include "ui/pages_logic/protocols/CloakLogic.h"
#include "ui/pages_logic/protocols/OpenVpnLogic.h"
#include "ui/pages_logic/protocols/ShadowSocksLogic.h"

#include "ui/uilogic.h"

#include "QZXing.h"

#include "platforms/ios/QRCodeReader.h"

#include "debug.h"
#include "defines.h"

#if !defined(Q_OS_ANDROID) && !defined(Q_OS_IOS)
#define QAPPLICATION_CLASS QGuiApplication
#include "singleapplication.h"
#undef QAPPLICATION_CLASS
#endif


#ifdef Q_OS_WIN
#include "Windows.h"
#endif

#if defined(Q_OS_ANDROID)
#include "native.h"
#endif

#if defined(Q_OS_IOS)
#include "QtAppDelegate-C-Interface.h"
#endif

static void loadTranslator()
{
    QTranslator* translator = new QTranslator;
    if (translator->load(QLocale(), QString("amneziavpn"), QLatin1String("_"), QLatin1String(":/translations"))) {
        qApp->installTranslator(translator);
    }
}

int main(int argc, char *argv[])
{
    QLoggingCategory::setFilterRules(QStringLiteral("qtc.ssh=false"));

    QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);

#ifdef Q_OS_WIN
    AllowSetForegroundWindow(ASFW_ANY);
#endif

#if !defined(Q_OS_ANDROID) && !defined(Q_OS_IOS)
    SingleApplication app(argc, argv, true, SingleApplication::Mode::User | SingleApplication::Mode::SecondaryNotification);

    if (!app.isPrimary()) {
        QTimer::singleShot(1000, &app, [&](){
            app.quit();
        });
        return app.exec();
    }
#else
    QApplication app(argc, argv);
#endif

#ifdef Q_OS_WIN
    AllowSetForegroundWindow(0);
#endif

#if defined(Q_OS_ANDROID)
    NativeHelpers::registerApplicationInstance(&app);
#endif

#if defined(Q_OS_IOS)
    QtAppDelegateInitialize();
#endif

    loadTranslator();

    QFontDatabase::addApplicationFont(":/fonts/Lato-Black.ttf");
    QFontDatabase::addApplicationFont(":/fonts/Lato-BlackItalic.ttf");
    QFontDatabase::addApplicationFont(":/fonts/Lato-Bold.ttf");
    QFontDatabase::addApplicationFont(":/fonts/Lato-BoldItalic.ttf");
    QFontDatabase::addApplicationFont(":/fonts/Lato-Italic.ttf");
    QFontDatabase::addApplicationFont(":/fonts/Lato-Light.ttf");
    QFontDatabase::addApplicationFont(":/fonts/Lato-LightItalic.ttf");
    QFontDatabase::addApplicationFont(":/fonts/Lato-Regular.ttf");
    QFontDatabase::addApplicationFont(":/fonts/Lato-Thin.ttf");
    QFontDatabase::addApplicationFont(":/fonts/Lato-ThinItalic.ttf");

    app.setApplicationName(APPLICATION_NAME);
    app.setOrganizationName(ORGANIZATION_NAME);
    app.setApplicationDisplayName(APPLICATION_NAME);

    QCommandLineParser parser;
    parser.setApplicationDescription(APPLICATION_NAME);
    parser.addHelpOption();
    parser.addVersionOption();

    QCommandLineOption c_autostart {{"a", "autostart"}, "System autostart"};
    parser.addOption(c_autostart);

    QCommandLineOption c_cleanup {{"c", "cleanup"}, "Cleanup logs"};
    parser.addOption(c_cleanup);

    parser.process(app);

    if (parser.isSet(c_cleanup)) {
        Debug::cleanUp();
        QTimer::singleShot(100,[&app]{
            app.quit();
        });
        app.exec();
        return 0;
    }

    Settings settings;

    if (settings.isSaveLogs()) {
        if (!Debug::init()) {
            qWarning() << "Initialization of debug subsystem failed";
        }
    }

    app.setQuitOnLastWindowClosed(false);

    QZXing::registerQMLTypes();

    qRegisterMetaType<VpnProtocol::VpnConnectionState>("VpnProtocol::VpnConnectionState");
    qRegisterMetaType<ServerCredentials>("ServerCredentials");

    qRegisterMetaType<DockerContainer>("DockerContainer");
    qRegisterMetaType<TransportProto>("TransportProto");
    qRegisterMetaType<Proto>("Proto");
    qRegisterMetaType<ServiceType>("ServiceType");
    qRegisterMetaType<Page>("Page");
    qRegisterMetaType<VpnProtocol::VpnConnectionState>("ConnectionState");

    qRegisterMetaType<PageProtocolLogicBase *>("PageProtocolLogicBase *");

    UiLogic *uiLogic = new UiLogic;

    QQmlApplicationEngine *engine = new QQmlApplicationEngine;

    declareQmlPageEnum();
    declareQmlProtocolEnum();
    declareQmlContainerEnum();

    qmlRegisterType<PageType>("PageType", 1, 0, "PageType");
    qmlRegisterType<QRCodeReader>("QRCodeReader", 1, 0, "QRCodeReader");

    QScopedPointer<ContainerProps> containerProps(new ContainerProps);
    qmlRegisterSingletonInstance("ContainerProps", 1, 0, "ContainerProps", containerProps.get());

    QScopedPointer<ProtocolProps> protocolProps(new ProtocolProps);
    qmlRegisterSingletonInstance("ProtocolProps", 1, 0, "ProtocolProps", protocolProps.get());

    const QUrl url(QStringLiteral("qrc:/ui/qml/main.qml"));
    QObject::connect(engine, &QQmlApplicationEngine::objectCreated,
                     &app, [url](QObject *obj, const QUrl &objUrl) {
        if (!obj && url == objUrl)
            QCoreApplication::exit(-1);
    }, Qt::QueuedConnection);

    engine->rootContext()->setContextProperty("Debug", &Debug::Instance());

    engine->rootContext()->setContextProperty("UiLogic", uiLogic);

    engine->rootContext()->setContextProperty("AppSettingsLogic", uiLogic->appSettingsLogic());
    engine->rootContext()->setContextProperty("GeneralSettingsLogic", uiLogic->generalSettingsLogic());
    engine->rootContext()->setContextProperty("NetworkSettingsLogic", uiLogic->networkSettingsLogic());
    engine->rootContext()->setContextProperty("NewServerProtocolsLogic", uiLogic->newServerProtocolsLogic());
    engine->rootContext()->setContextProperty("QrDecoderLogic", uiLogic->qrDecoderLogic());
    engine->rootContext()->setContextProperty("ServerConfiguringProgressLogic", uiLogic->serverConfiguringProgressLogic());
    engine->rootContext()->setContextProperty("ServerListLogic", uiLogic->serverListLogic());
    engine->rootContext()->setContextProperty("ServerSettingsLogic", uiLogic->serverSettingsLogic());
    engine->rootContext()->setContextProperty("ServerContainersLogic", uiLogic->serverprotocolsLogic());
    engine->rootContext()->setContextProperty("ShareConnectionLogic", uiLogic->shareConnectionLogic());
    engine->rootContext()->setContextProperty("SitesLogic", uiLogic->sitesLogic());
    engine->rootContext()->setContextProperty("StartPageLogic", uiLogic->startPageLogic());
    engine->rootContext()->setContextProperty("VpnLogic", uiLogic->vpnLogic());
    engine->rootContext()->setContextProperty("WizardLogic", uiLogic->wizardLogic());

#if defined(Q_OS_IOS)
    setStartPageLogic(uiLogic->startPageLogic());
#endif

    engine->load(url);

    QObject::connect(&app, &QCoreApplication::aboutToQuit, uiLogic, [&engine, uiLogic](){
        QObject::disconnect(engine, 0,0,0);
        delete engine;

        QObject::disconnect(uiLogic, 0,0,0);
        delete uiLogic;
    });

    if (engine->rootObjects().size() > 0) {
        uiLogic->setQmlRoot(engine->rootObjects().at(0));
    }

#ifdef Q_OS_WIN
    if (parser.isSet("a")) uiLogic->showOnStartup();
    else emit uiLogic->show();
#else
    uiLogic->showOnStartup();
#endif

    // TODO - fix
#if !defined(Q_OS_ANDROID) && !defined(Q_OS_IOS)
    if (app.isPrimary()) {
        QObject::connect(&app, &SingleApplication::instanceStarted, uiLogic, [&](){
            qDebug() << "Secondary instance started, showing this window instead";
            emit uiLogic->show();
            emit uiLogic->raise();
        });
    }
#endif

    return app.exec();
}