/*
    SPDX-FileCopyrightText: 2016 Smith AR <audoban@openmailbox.org>
    SPDX-FileCopyrightText: 2016 Michail Vourlakos <mvourlakos@gmail.com>
    SPDX-License-Identifier: GPL-2.0-or-later
*/

#ifndef ABSTRACTWINDOWINTERFACE_H
#define ABSTRACTWINDOWINTERFACE_H

// local
#include <coretypes.h>
#include "schemecolors.h"
#include "tasktools.h"
#include "windowinfowrap.h"
#include "tracker/windowstracker.h"

// C++
#include <unordered_map>
#include <list>

// Qt
#include <QObject>
#include <QWindow>
#include <QDBusServiceWatcher>
#include <QDialog>
#include <QMap>
#include <QRect>
#include <QPoint>
#include <QPointer>
#include <QScreen>
#include <QTimer>

// KDE
#include <KSharedConfig>
#include <KActivities/Consumer>

// Plasma
#include <Plasma>


namespace Latte {
class Corona;
namespace WindowSystem {
namespace Tracker {
class Schemes;
class Windows;
}
}
}

namespace Latte {
namespace WindowSystem {

class AbstractWindowInterface : public QObject
{
    Q_OBJECT

public:
    enum class Slide
    {
        None,
        Top,
        Left,
        Bottom,
        Right,
    };

    explicit AbstractWindowInterface(QObject *parent = nullptr);
    virtual ~AbstractWindowInterface();

    virtual void setViewExtraFlags(QObject *view,bool isPanelWindow = true, Latte::Types::Visibility mode = Latte::Types::WindowsGoBelow) = 0;
    virtual void setViewStruts(QWindow &view, const QRect &rect
                               , Plasma::Types::Location location) = 0;
    virtual void setWindowOnActivities(const WindowId &wid, const QStringList &activities) = 0;

    virtual void removeViewStruts(QWindow &view) = 0;

    virtual WindowId activeWindow() = 0;
    virtual WindowInfoWrap requestInfo(WindowId wid) = 0;
    virtual WindowInfoWrap requestInfoActive() = 0;

    virtual void skipTaskBar(const QDialog &dialog) = 0;
    virtual void slideWindow(QWindow &view, Slide location) = 0;
    virtual void enableBlurBehind(QWindow &view) = 0;
    virtual void setActiveEdge(QWindow *view, bool active) = 0;

    virtual void requestActivate(WindowId wid) = 0;
    virtual void requestClose(WindowId wid) = 0;
    virtual void requestMoveWindow(WindowId wid, QPoint from) = 0;
    virtual void requestToggleIsOnAllDesktops(WindowId wid) = 0;
    virtual void requestToggleKeepAbove(WindowId wid) = 0;
    virtual void requestToggleMinimized(WindowId wid) = 0;
    virtual void requestToggleMaximized(WindowId wid) = 0;
    virtual void setKeepAbove(WindowId wid, bool active) = 0;
    virtual void setKeepBelow(WindowId wid, bool active) = 0;

    virtual bool windowCanBeDragged(WindowId wid) = 0;
    virtual bool windowCanBeMaximized(WindowId wid) = 0;

    virtual QIcon iconFor(WindowId wid) = 0;
    virtual WindowId winIdFor(QString appId, QRect geometry) = 0;
    virtual WindowId winIdFor(QString appId, QString title) = 0;
    virtual AppData appDataFor(WindowId wid) = 0;

    bool isKWinRunning() const;

    bool inCurrentDesktopActivity(const WindowInfoWrap &winfo);
    bool isShowingDesktop() const;

    bool hasBlockedTracking(const WindowId &wid) const;

    QString currentDesktop();
    QString currentActivity();

    virtual void registerIgnoredWindow(WindowId wid);
    virtual void unregisterIgnoredWindow(WindowId wid);

    void registerPlasmaIgnoredWindow(WindowId wid);
    void unregisterPlasmaIgnoredWindow(WindowId wid);

    void registerWhitelistedWindow(WindowId wid);
    void unregisterWhitelistedWindow(WindowId wid);

    void switchToNextActivity();
    void switchToPreviousActivity();

    virtual void switchToNextVirtualDesktop() = 0;
    virtual void switchToPreviousVirtualDesktop() = 0;

    virtual void setFrameExtents(QWindow *view, const QMargins &margins) = 0;
    virtual void setInputMask(QWindow *window, const QRect &rect) = 0;

    Latte::Corona *corona();
    Tracker::Schemes *schemesTracker();
    Tracker::Windows *windowsTracker() const;

signals:
    void activeWindowChanged(WindowId wid);
    void windowChanged(WindowId winfo);
    void windowAdded(WindowId wid);
    void windowRemoved(WindowId wid);
    void currentDesktopChanged();
    void currentActivityChanged();

    void isShowingDesktopChanged();

    void latteWindowAdded();

protected:
    QString m_currentDesktop;
    QString m_currentActivity;

    //! windows that must be ignored from tracking, a good example are Latte::Views and
    //! their Configuration windows
    QList<WindowId> m_ignoredWindows;
    //! identified plasma panels
    QList<WindowId> m_plasmaIgnoredWindows;

    //! identified whitelisted windows that can be tracked e.g. plasma widgets explorer and activities
    QList<WindowId> m_whitelistedWindows;

    QPointer<KActivities::Consumer> m_activities;

    //! Sending too fast plenty of signals for the same window
    //! has no reason and can create HIGH CPU usage. This Timer
    //! can delay the batch sending of signals for the same window
    WindowId m_windowChangedWaiting;
    QTimer m_windowWaitingTimer;

    //! Plasma taskmanager rules ile
    KSharedConfig::Ptr rulesConfig;

    void considerWindowChanged(WindowId wid);

    bool isIgnored(const WindowId &wid) const;
    bool isRegisteredPlasmaIgnoredWindow(const WindowId &wid) const;
    bool isWhitelistedWindow(const WindowId &wid) const;

    bool isFullScreenWindow(const QRect &wGeometry) const;
    bool isPlasmaPanel(const QRect &wGeometry) const;
    bool isSidepanel(const QRect &wGeometry) const;

    bool isVirtualDesktopNavigationWrappingAround() const;

private slots:
    void initKWinInterface();
    void windowRemovedSlot(WindowId wid);

    void setIsShowingDesktop(const bool &showing);

    void onVirtualDesktopNavigationWrappingAroundChanged(bool navigationWrappingAround);

private:
    bool m_isShowingDesktop{false};

    bool m_isKWinInterfaceAvailable{false};
    bool m_isVirtualDesktopNavigationWrappingAround{true};

    Latte::Corona *m_corona;
    Tracker::Schemes *m_schemesTracker;
    Tracker::Windows *m_windowsTracker;

    QDBusServiceWatcher *m_kwinServiceWatcher{nullptr};
};

}
}

#endif // ABSTRACTWINDOWINTERFACE_H