#ifndef FM_THUMBNAIL_H
#define FM_THUMBNAIL_H
#include "../rm_include.h"
#if (RM_MODEL == RM_MODEL_TYPE_TB4000)
#define DYNAMIC_THUMBNAIL 1

#define MULTI_THUMBNAIL_ONLY            1     // SINGLE 모드 제거
#define FIXED_SIZE_THUMBNAIL            1     // 고정 크기
#define THUMBNAIL_ITEM_CONNECT_EACH     1     // FMSIGNAL 로 연결
#define THUMBNAIL_DIALOG_SNAP           1     // 크기 조정
#include <QDialog>
#include <QObject>
#include <QWidget>
class QScrollArea;
class QVBoxLayout;
class RMVideoItem;
#include <QStyledItemDelegate>
#include <QDateTime>
class FMThumbnailDelegate;
class QItemSelection;
class FMButton;

class QTableWidget;
#if (DETECT_USB_CHANGE)
class rm_usb;
#endif

class FMThumbnailDialog : public QDialog
{
    Q_OBJECT
public:
#if (USE_DATE_FILTER)
    FMThumbnailDialog(QWidget *parent, QString folder);
#else // USE_DATE_FILTER
    FMThumbnailDialog(QWidget *parent, bool bAll);
#endif // USE_DATE_FILTER
    enum MODE {
        MODE_SIMPLE,        // 심플 아이템 표시
        MODE_SUB            // 심플 아이템에 포함된 모든 영상
    };

    QString selectedFile;

protected:
    bool _bFirst;

#if (DETECT_USB_CHANGE)
    rm_usb* _usb;   // 메인 윈도우의 참조
#endif // #if (DETECT_USB_CHANGE)

#if (USE_DATE_FILTER)
    QString _folder;
    static QStringList _files;
    QList<RMVideoItem*> _items;             // 멀티에서만 사용
#endif // #if (USE_DATE_FILTER)
#if (USE_1HOUR_FILTER)
    QDateTime _selectedDateTime;                    ///!< 선택된 영상 시간
    static QList<RMVideoItem*> _items;              ///!< 시간 및 재생처리를 위해..
    static QList<QPair<QString,QString>> _thumbnails;      ///!< 로딩된 Thumbnail 경로
    FMButton* _backButton;                          ///!< 세부->1시간으로 돌아가기 버튼
    QLabel* _titleBar;                              ///!< 1시간 및 세부 리스트에서 표시되는 타이틀
#endif

    QModelIndex _lastIndex;                 // 1시간 리스트에서 전체 리스트로 이동시
    //QString windowTitle;
    MODE _mode;
    QTableWidget* _tableView;
    FMThumbnailDelegate* _delegate;

    void createLayout(MODE mode,RMVideoItem* selected = NULL);
    void closeEvent(QCloseEvent *event);
    void showEvent(QShowEvent * event);
#if (USE_DATE_FILTER)
    void loadThumbnails(QString folder);
#else
    void loadThumbnails();
#endif // #if (USE_DATE_FILTER)
public slots:
    void onLoadThumbnails();

    //void onThumbnailLoaded(RMVideoItem* item); // FMThumbnail* thumbnail,
    //void onProcessFinished();
#if (USE_1HOUR_FILTER)
    void onBack();
#endif // #if (USE_1HOUR_FILTER)

    void onSelectionChanged(const QItemSelection &selected, const QItemSelection &deselected);

    friend class FMThumbnailDelegate;
    void scrollTo();
    void onThumbnailUpdated(int);

    void onDoubleClickItem(int row, int column);

    void onEnableClick(); ///! 더블클릭 방지용

#if (DETECT_USB_CHANGE)
    void onUSBChange(bool inserted, QString& drive);
#endif // #if (DETECT_USB_CHANGE)
};


class thumbnail_cache : public QObject
{
    Q_OBJECT
private:
    thumbnail_cache(QObject* parent = nullptr);
    QMap<QString,QPixmap> cache;
    QPixmap _load(QString path, const QSize& wh);
    QPixmap _dummy;
public:
    const QPixmap thumbnail(const QString path,int index, const QSize& wh);

    static thumbnail_cache* instance() {
        static thumbnail_cache _instance;
        return &_instance;
    }
    void clear() {
        cache.clear();
    }

signals:
    void thumbnailLoaded(int index);
};

class FMThumbnailDelegate : public QStyledItemDelegate
{
    Q_OBJECT
public:
    explicit FMThumbnailDelegate(QObject *parent = 0);
    void paint(QPainter *painter, const QStyleOptionViewItem &option,
               const QModelIndex &index) const;
private:
    QPersistentModelIndex currentEditedCellIndex;
    FMThumbnailDialog* _dialog;
public slots:
    void entered(const QModelIndex &index);
};

// PROCESS 강제 종료하기 위해 사용
class FMThumbnailSignal : public QObject {
    Q_OBJECT
private:
    static FMThumbnailSignal* _instance;
public:
    enum SIGNAL_MODE {
        MODE_REJECT,    // 종료(닫기, 취소)
        MODE_ACCEPT,    // 선택됨
        MODE_RESTART    // 다른 썸네일 로딩
    };
    static FMThumbnailSignal* instance()
    {
        if(_instance == NULL)
        {
            _instance = new FMThumbnailSignal();
        }
        return _instance;
    }
    SIGNAL_MODE mode;
    FMThumbnailDialog::MODE restartMode;
    RMVideoItem* restartItem;

signals:
    void finished();
    void thumnbnailsLoaded(RMVideoItem* item);
};


#endif // #if (RM_MODEL == RM_MODEL_TYPE_TB4000)
#endif // FM_THUMBNAIL_H