/******************************************************************************
 * QSkinny - Copyright (C) 2016 Uwe Rathmann
 * This file may be used under the terms of the QSkinny License, Version 1.0
 *****************************************************************************/

#ifndef QSK_MATERIAL_SKIN_H
#define QSK_MATERIAL_SKIN_H

#include "QskMaterialGlobal.h"
#include <QskSkin.h>
#include <QskRgbValue.h>
#include <memory>

struct ColorPalette
{
    enum Lightness { light, dark } lightness;

    QColor primary;
    QColor primaryVariant;
    QColor onPrimary;

    QColor secondary;
    QColor secondaryVariant;
    QColor onSecondary;

    QColor background;
    QColor onBackground;

    QColor error;
    QColor onError;

    QColor primaryNoSaturation = QColor::fromHsl( primary.hslHue(), 0,
        primary.lightness() );

    QColor secondaryNoSaturation =
        QColor::fromHsl( secondary.hslHue(), 0,
        secondary.lightness() );

    QColor secondaryVariantNoSaturation =
        QColor::fromHsl( secondaryVariant.hslHue(), 0,
        secondaryVariant.lightness() +
        secondaryVariant.hslSaturation() );

    qreal disabledOccupancy = 0.2;
    qreal widgetBackgroundDisabled = 0.6;

    qreal hover = 0.1;
    qreal focused = 0.4;
    qreal pressed = 0.5;
    qreal disabled = 0.3;

    ColorPalette(
        Lightness lightness = light,
        QColor primary = QColor::fromRgb( 0x6200EE ),
        QColor primaryVariant = QColor::fromRgb( 0x3700B3 ),
        QColor onPrimary = Qt::white,
        QColor secondary = QColor::fromRgb( 0x03DAC6 ),
        QColor secondaryVariant = QColor::fromRgb( 0x018786 ),
        QColor onSecondary = Qt::white,
        QColor background = QColor::fromRgba( QskRgb::Grey100 ),
        QColor onBackground = Qt::black,
        QColor error = QColor::fromRgb( 0xB00020 ),
        QColor onError = Qt::white ):
        lightness( lightness ),
        primary( primary ),
        primaryVariant( primaryVariant ),
        onPrimary( onPrimary ),
        secondary( secondary ),
        secondaryVariant( secondaryVariant ),
        onSecondary( onSecondary ),
        background( background ),
        onBackground( onBackground ),
        error( error ),
        onError( onError )
    {
        primaryNoSaturation = QColor::fromHsl( primary.hslHue(), 0,
            primary.lightness() );

        secondaryNoSaturation = QColor::fromHsl( secondary.hslHue(),
            0,
            secondary.lightness() );

        secondaryVariantNoSaturation =
            QColor::fromHsl( secondaryVariant.hslHue(), 0,
            secondaryVariant.lightness() );
    }

    inline QColor elevated( const QColor target, const float level = 1 ) const {
        return ( lightness == light ) ? target.darker( 100 + level * 15 )
      : target.lighter( 130 + level * 30 );
    }
};

class QSK_MATERIAL_EXPORT QskMaterialSkin : public QskSkin
{
    Q_OBJECT

    using Inherited = QskSkin;

  public:
    QskMaterialSkin( ColorPalette, QObject* parent = nullptr );
    ~QskMaterialSkin() override;

  private:
    class PrivateData;
    std::unique_ptr< PrivateData > m_data;
};

#endif