#include "legacyapplication.h"

#include <QLockFile>
#include <QDir>
#include <QMessageBox>
#include <QResource>
#include <QFontDatabase>
#include <QMessageLogContext>
#include <QApplication>

#include "utils.h"
#include "widgets/mainwindow.h"
#include "models/filesystem.h"
#include "models/patchdownloader.h"
#include "models/patchinstaller.h"

extern Q_CORE_EXPORT int qt_ntfs_permission_lookup;


LegacyApplication::LegacyApplication() {
    qInstallMessageHandler(logMessageHandler);

    modules_init_timer_.setInterval(1 * 1000); // one second.
    connect(&modules_init_timer_, &QTimer::timeout, this, &LegacyApplication::InitModules);
    modules_init_timer_.stop();
}

LegacyApplication::~LegacyApplication() {
    // gui will be deleted automatically on close due to Qt::WA_DeleteOnClose attribute
    patch_managers_thread_->terminate();
    patch_managers_thread_->wait();
    delete patch_managers_thread_;
}

bool LegacyApplication::init() {
    qt_ntfs_permission_lookup++;
    qDebug() << "Starting initialisation...";

    QCoreApplication::setOrganizationName("LotroLegacy");
    QCoreApplication::setOrganizationDomain("translate.lotros.ru");
    QCoreApplication::setApplicationName("Legacy_v2");

    QSettings::setDefaultFormat(QSettings::IniFormat);
    QSettings::setPath(QSettings::IniFormat, QSettings::UserScope, QApplication::applicationDirPath());
    QSettings::setPath(QSettings::IniFormat, QSettings::SystemScope, QApplication::applicationDirPath());

    qDebug() << "Checking if there's another instance of Legacy";
    if (!checkSingleAppInstance()) {
        return false;
    }

    qDebug() << "Initialising fonts and resources";
    QDir::setCurrent(QApplication::applicationDirPath());

    QResource::registerResource(QApplication::applicationDirPath() + "/data01.gtr");
    QResource::registerResource(QApplication::applicationDirPath() + "/data02.gtr");

    QFontDatabase::addApplicationFont(":/fonts/trpro.ttf");
    QFontDatabase::addApplicationFont(":/fonts/CrimsonText.ttf");
    QFontDatabase::addApplicationFont(":/fonts/EBGaramond.ttf");
    QFontDatabase::addApplicationFont(":/fonts/aniron.ttf");

    qDebug() << "Starting Patch managers initialization...";

    patch_managers_thread_ = new QThread();
    PatchDownloader::instance().moveToThread(patch_managers_thread_);
    PatchInstaller::instance().moveToThread(patch_managers_thread_);
    patch_managers_thread_->start();

    qDebug() << "Starting GUI initialisation...";
    gui = new MainWindow();

    qDebug() << "Starting functional modules initialisation...";
    InitModules();

    qDebug() << "Successfully finished the initialization!!!";
    return true;
}

void LegacyApplication::InitModules() {
    modules_init_timer_.stop();
    AppErrorStatus status = CheckAppPrerequesities();
    emit ErrorStatusChanged(status);
    qDebug() << "NEW ERROR STATUS: " << status;

    if (status == E_NO_ERRORS) {
        QMetaObject::invokeMethod(&PatchInstaller::instance(), &PatchInstaller::init, Qt::BlockingQueuedConnection);
        QMetaObject::invokeMethod(&PatchDownloader::instance(), &PatchDownloader::init, Qt::BlockingQueuedConnection);
        QMetaObject::invokeMethod(&PatchDownloader::instance(), &PatchDownloader::checkForUpdates, Qt::QueuedConnection);
    } else if (status == E_NO_SERVER_CONNECTION) {
        qWarning() << "LegacyApplication: Cannot connect to server - restarting in 1 second!";
        modules_init_timer_.start();
    }
}

void LegacyApplication::close() {
    gui->close();
}