#ifndef LEGACYAPP_H
#define LEGACYAPP_H

#include <QObject>
#include <QSqlDatabase>

#include "models/downloader.h"
#include <LotroDat/datfile.h>
#include <LotroDat/database.h>

class PatchInstaller : public QObject
{
    Q_OBJECT

public:
    struct Status {
        size_t total_parts = 0;
        size_t finished_parts = 0;
    };


public:
    static PatchInstaller& instance() {
        static PatchInstaller instance_;
        return instance_;
    }
    bool initialised();
    ~PatchInstaller();

//    TODO: bool NotPatched();


private:
    Q_DISABLE_COPY(PatchInstaller)

    enum RESOURCE_FILE_TYPE : int {
        E_CLIENT_LOCAL = 0,
        E_CLIENT_GENERAL = 1
    };

    explicit PatchInstaller(QObject *parent = nullptr);

    bool datPathIsRelevant();

    void deinit();

    void installPatch(QString patch_name, LOTRO_DAT::Database* database);

    void installLoadscreens(LOTRO_DAT::Database* database);

    void installVideos(LOTRO_DAT::Database* database);

public slots:
    void init();
    void startGame(bool freeze_updates);
    void startPatchInstallationChain();

private slots:
    void onDownloaderProgressChanged(Downloader* context, Downloader::Status progress);

signals:
    void started();
    void progressChanged(PatchInstaller::Status status);
    void videosDownloadProgressChanged(int finished_videos, int total_videos, Downloader::Status status);
    void finished();

private:
    LOTRO_DAT::DatFile* client_local_file_;
    LOTRO_DAT::DatFile* client_general_file_;

    QSqlDatabase orig_files_db;
    const QString create_table_query = "CREATE TABLE IF NOT EXISTS `patch_data` "
                                       "(`file_id` INTEGER PRIMARY KEY,"
                                       "`binary_data` BLOB, "
                                       "`text_data` TEXT, "
                                       "`options` TEXT NOT NULL)";

//    const QString upset_table_value_query = "INSERT INTO `patch_data` (`file_id`, ``) VALUES (?);";
    Status current_status;
    int download_video_finished_videos = 0;
    int download_video_total_videos = 0;
};

Q_DECLARE_METATYPE(PatchInstaller::Status)

#endif // LEGACYAPP_H