#ifndef FRAMELESS_H
#define FRAMELESS_H

#include <QAbstractNativeEventFilter>
#include <QQuickItem>

class Frameless : public QQuickItem, QAbstractNativeEventFilter {
    Q_OBJECT
    QML_ELEMENT
    Q_PROPERTY(QQuickItem *appBar READ appBar WRITE setAppBar NOTIFY appBarChanged)
    Q_PROPERTY(QQuickItem *maximizeButton READ maximizeButton WRITE setMaximizeButton NOTIFY maximizeButtonChanged)
    Q_PROPERTY(QQuickItem *minimizedButton READ minimizedButton WRITE setMinimizedButton NOTIFY minimizedButtonChanged)
    Q_PROPERTY(QQuickItem *closeButton READ closeButton WRITE setCloseButton NOTIFY closeButtonChanged)

    Q_PROPERTY(bool fixSize READ fixSize WRITE setFixSize NOTIFY fixSizeChanged)
    Q_PROPERTY(bool topmost READ topmost WRITE setTopmost NOTIFY topmostChanged)
    Q_PROPERTY(bool disabled READ disabled WRITE setDisabled NOTIFY disabledChanged)

public:
    Frameless(QQuickItem *parent = nullptr);
    QQuickItem *appBar() const;
    void setAppBar(QQuickItem *appBar);

    QQuickItem *maximizeButton() const;
    void setMaximizeButton(QQuickItem *button);

    QQuickItem *minimizedButton() const;
    void setMinimizedButton(QQuickItem *button);

    QQuickItem *closeButton() const;
    void setCloseButton(QQuickItem *button);

    bool fixSize() const;
    void setFixSize(bool fix);

    bool topmost() const;
    void setTopmost(bool topmost);

    bool disabled() const;
    void setDisabled(bool disabled);

    Q_INVOKABLE void setHitTestVisible(QQuickItem *item);
    Q_INVOKABLE void onDestruction();
    void componentComplete() final;

    bool nativeEventFilter(const QByteArray &eventType, void *message, qintptr *result) final;

signals:
    void appBarChanged();
    void maximizeButtonChanged();
    void minimizedButtonChanged();
    void closeButtonChanged();
    void fixSizeChanged();
    void topmostChanged();
    void disabledChanged();

protected:
    bool isFullScreen();
    bool isMaximized();
    void setMaximizeHovered(bool val);
    void setMaximizePressed(bool val);
    void setWindowTopmost(bool topmost);
    bool hitMaximizeButton();
    bool hitAppBar();
    void showSystemMenu(QPoint point);
    bool eventFilter(QObject *obj, QEvent *event) final;

private:
    quint64 m_current = 0;
    QQuickItem *m_appBar = nullptr;
    QQuickItem *m_maximizeButton = nullptr;
    QQuickItem *m_minimizedButton = nullptr;
    QQuickItem *m_closeButton = nullptr;
    bool m_fixSize = false;
    bool m_topmost = false;
    bool m_disabled = false;
    int m_margins = 8;
    QList<QPointer<QQuickItem>> m_hitTestList;
    bool m_isWindows11OrGreater = false;
};

#endif // FRAMELESS_H