#pragma once

#include <QObject>
#include <QString>
#include <QVariant>
#include <openvr.h>

class QQuickWindow;

namespace video_keys
{
constexpr auto k_brightnessOverlayFilename = "/res/img/video/dimmer.png";

} // namespace video_keys

namespace advsettings
{
// forward declaration
class OverlayController;

class VideoTabController : public QObject
{
    Q_OBJECT
    Q_PROPERTY( bool brightnessEnabled READ brightnessEnabled WRITE
                    setBrightnessEnabled NOTIFY brightnessEnabledChanged )
    Q_PROPERTY( float brightnessValue READ brightnessValue WRITE
                    setBrightnessValue NOTIFY brightnessValueChanged )

private:
    // how far away the overlay is, any OVERLAY closer will not be dimmed.
    const float k_hmdDistance = -0.15f;
    // how wide overlay is, Increase this value if edges of view are not dimmed.
    const float k_overlayWidth = 1.0f;
    OverlayController* parent;
    QQuickWindow* widget;

    vr::VROverlayHandle_t m_brightnessNotificationOverlayHandle
        = vr::k_ulOverlayHandleInvalid;
    float m_opacityValue = 0.0f;
    float m_brightnessValue = 1.0f;
    bool m_brightnessEnabled = false;

    void reloadVideoConfig();
    void saveVideoConfig();
    void setOpacityValue();

    QString getSettingsName()
    {
        return "videoSettings";
    }

    vr::VROverlayHandle_t getBrightnessOverlayHandle()
    {
        return m_brightnessNotificationOverlayHandle;
    }

public:
    float opacityValue() const;
    // inverse of brightnessValue
    float brightnessValue() const;
    bool brightnessEnabled() const;

    void initStage1();
    void initStage2( OverlayController* var_parent, QQuickWindow* var_widget );
    void eventLoopTick();

public slots:
    void setBrightnessEnabled( bool value, bool notify = true );
    void setBrightnessValue( float percvalue, bool notify = true );

signals:
    void brightnessEnabledChanged( bool value );
    void brightnessValueChanged( float value );
};

} // namespace advsettings