#include <QFile>
#include <QDir>
#include <QDirIterator>
#include <QCoreApplication>
#include <QDebug>
#include <QThread>
#include <QProcess>
#include <QApplication>
#include <QMessageBox>

void logMessageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
    QString message_type;

    switch (type) {
    case QtDebugMsg:
        message_type = "[LEGACY_FORWARD_HELPER][DEBG]";
        break;
    case QtInfoMsg:
        message_type = "[LEGACY_FORWARD_HELPER][INFO]";
        break;
    case QtWarningMsg:
        message_type = "[LEGACY_FORWARD_HELPER][WARN]";
        break;
    case QtCriticalMsg:
        message_type = "[LEGACY_FORWARD_HELPER][CRIT]";
        break;
    case QtFatalMsg:
        message_type = "[LEGACY_FORWARD_HELPER][FATL]";
        break;
    default:
        message_type = "[LEGACY_FORWARD_HELPER][UNKN]";
        break;
    }

    QString filename = context.category;
    QString function = context.function;
    QString line_number = QString::number(context.line);

    QString s = QString("%1: %2 ||| %3:%4 %5\n")
                .arg(message_type)
                .arg(msg)
                .arg(filename)
                .arg(line_number)
                .arg(function);

#ifndef QT_DEBUG
    QFile log_file("legacy_log.txt");
    QFileInfo log_file_info(log_file);
    if (log_file_info.size() >= 10 * 1024 * 1024) {
        QFile::remove("legacy_log.old.txt");
        QFile::copy("legacy_log.txt", "legacy_log.old.txt");
        QFile::remove("legacy_log.txt");
    }
    log_file.open(QIODevice::ReadWrite | QIODevice::Append);
    QTextStream stream(&log_file);
    stream << s;
    log_file.close();
#endif

    fprintf(stderr, "%s", qUtf8Printable(s));
    fflush(stderr);
}

int main(int argc, char** argv) {
    if (argc <= 1 || (argc > 1 && std::string(argv[1]) != "-prelaunched")) {
        QApplication a(argc, argv);
        QMessageBox msgBox;
        msgBox.setIcon(QMessageBox::Warning);

        #ifdef DEBUG
            msgBox.setText("ЭТО ТЕСТОВАЯ ВЕРСИЯ ЛАУНЧЕРА! НЕ ДЛЯ РАСПРОСТРАНЕНИЯ!");
            msgBox.exec();
            long long cur_time = time(0);
            if (cur_time >= DEBUG_EXPIRE)
                return 0;
        #else
            msgBox.setText("Запуск Наследия невозможен без лаунчера. Используйте лаунчер Наследия для запуска приложения!");
            msgBox.exec();
            a.exit(0);
            return 0;
        #endif
    }

    QCoreApplication a(argc, argv);
    qInstallMessageHandler(logMessageHandler);
    QThread::currentThread()->sleep(1); // Sleep 2 seconds to ensure that application-caller finished its work
    const QString app_path = QCoreApplication::applicationDirPath();
    const QDir::Filters filters = (QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot);
    QDirIterator it(app_path, filters, QDirIterator::Subdirectories);

    while (it.hasNext()) {
        QString path = it.next();

        if (QFileInfo(path).isFile() && path.endsWith(".forward")) {
            QString path_stripped = path.left(path.length() - QString(".forward").length());
            QFile::remove(path_stripped);
            if (QFile::copy(path, path_stripped)) {
                QFile::remove(path);
            }
            qInfo() << "Renaming file " << path << " to file " << path_stripped;
        }
    }

    QProcess process;
    process.setProgram("./Legacy.exe");
    process.setArguments({"-prelaunched"});
    process.startDetached();
    process.waitForFinished(-1);
    return 0;
}