/*
 *  Copyright 2019  Michail Vourlakos <mvourlakos@gmail.com>
 *
 *  This file is part of Window Buttons Applet
 *
 *  Latte-Dock is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License as
 *  published by the Free Software Foundation; either version 2 of
 *  the License, or (at your option) any later version.
 *
 *  Latte-Dock 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef ENVIRONMENT_H
#define ENVIRONMENT_H

// Qt
#include <QJSEngine>
#include <QObject>
#include <QQmlEngine>

namespace Decoration
{
namespace Applet
{
class Environment final : public QObject
{
    Q_OBJECT
    Q_PROPERTY(uint frameworksVersion READ frameworksVersion NOTIFY frameworksVersionChanged)
    Q_PROPERTY(uint plasmaDesktopVersion READ plasmaDesktopVersion NOTIFY plasmaDesktopVersionChanged)

public:
    virtual ~Environment();

    bool compositingActive() const;
    bool isPlatformWayland() const;

    uint frameworksVersion() const;
    uint plasmaDesktopVersion();

    static QObject *instance(QQmlEngine *engine, QJSEngine *scriptEngine)
    {
        Q_UNUSED(engine)
        Q_UNUSED(scriptEngine)

        // NOTE: QML engine is the owner of this resource
        return new Environment;
    }

public slots:
    Q_INVOKABLE uint makeVersion(uint major, uint minor, uint release) const;

signals:
    void frameworksVersionChanged();
    void plasmaDesktopVersionChanged();

private:
    explicit Environment(QObject *parent = nullptr);

    void loadPlasmaDesktopVersion();

    uint identifyPlasmaDesktopVersion();

private:
    int m_plasmaDesktopVersion {-1};
};

}
}

#endif // ENVIRONMENT_H
