/*
    QMPlay2 is a video and audio player.
    Copyright (C) 2010-2020  Błażej Szczygieł

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#pragma once

#include <QMPlay2Core.hpp>

#include <QSettings>
#include <QMutex>
#include <QMap>
#include <QSet>

class QMPLAY2SHAREDLIB_EXPORT Settings : protected QSettings
{
    using SettingsMap = QMap<QString, QVariant>;
public:
    Settings(const QString &name);
    ~Settings();

    void flush();

    void init(const QString &key, const QVariant &val);
    void set(const QString &key, const QVariant &val);
    bool contains(const QString &key) const;
    void remove(const QString &key);

    template<typename T>
    inline T getWithBounds(const QString &key, T min, T max, T def = T()) const
    {
        return qBound(min, (T)get(key, def).toInt(), max);
    }

    inline bool getBool(const QString &key, const bool def = bool()) const
    {
        return get(key, def).toBool();
    }
    inline int getInt(const QString &key, const int def = int()) const
    {
        return get(key, def).toInt();
    }
    inline uint getUInt(const QString &key, const uint def = uint()) const
    {
        return get(key, def).toUInt();
    }
    inline double getDouble(const QString &key, const double def = double()) const
    {
        return get(key, def).toDouble();
    }
    inline QByteArray getByteArray(const QString &key, const QByteArray &def = QByteArray()) const
    {
        return get(key, def).toByteArray();
    }
    inline QString getString(const QString &key, const QString &def = QString()) const
    {
        return get(key, def).toString();
    }
    inline QStringList getStringList(const QString &key, const QStringList &def = {}) const
    {
        return get(key, def).toStringList();
    }
    inline QRect getRect(const QString &key, const QRect &def = QRect()) const
    {
        return get(key, def).toRect();
    }
    inline QColor getColor(const QString &key, const QColor &def = QColor()) const
    {
        return get(key, def).value<QColor>();
    }
private:
    QVariant get(const QString &key, const QVariant &def = QVariant()) const;

    void flushCache();

    mutable QMutex mutex;
    QSet<QString> toRemove;
    SettingsMap cache;
};
