/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QMEDIAPLAYLIST_H
#define QMEDIAPLAYLIST_H

#include <QtCore/qobject.h>

#include <QtMultimedia/qmediacontent.h>
#include <QtMultimedia/qmediaobject.h>
#include <QtMultimedia/qmediabindableinterface.h>
#include <QtMultimedia/qmediaenumdebug.h>


QT_BEGIN_NAMESPACE


class QMediaPlaylistProvider;

class QMediaPlaylistPrivate;
class Q_MULTIMEDIA_EXPORT QMediaPlaylist : public QObject, public QMediaBindableInterface
{
    Q_OBJECT
    Q_INTERFACES(QMediaBindableInterface)
    Q_PROPERTY(QMediaPlaylist::PlaybackMode playbackMode READ playbackMode WRITE setPlaybackMode NOTIFY playbackModeChanged)
    Q_PROPERTY(QMediaContent currentMedia READ currentMedia NOTIFY currentMediaChanged)
    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)
    Q_ENUMS(PlaybackMode Error)

public:
    enum PlaybackMode { CurrentItemOnce, CurrentItemInLoop, Sequential, Loop, Random };
    enum Error { NoError, FormatError, FormatNotSupportedError, NetworkError, AccessDeniedError };

    explicit QMediaPlaylist(QObject *parent = Q_NULLPTR);
    virtual ~QMediaPlaylist();

    QMediaObject *mediaObject() const;

    PlaybackMode playbackMode() const;
    void setPlaybackMode(PlaybackMode mode);

    int currentIndex() const;
    QMediaContent currentMedia() const;

    int nextIndex(int steps = 1) const;
    int previousIndex(int steps = 1) const;

    QMediaContent media(int index) const;

    int mediaCount() const;
    bool isEmpty() const;
    bool isReadOnly() const;

    bool addMedia(const QMediaContent &content);
    bool addMedia(const QList<QMediaContent> &items);
    bool insertMedia(int index, const QMediaContent &content);
    bool insertMedia(int index, const QList<QMediaContent> &items);
    bool moveMedia(int from, int to);
    bool removeMedia(int pos);
    bool removeMedia(int start, int end);
    bool clear();

    void load(const QNetworkRequest &request, const char *format = Q_NULLPTR);
    void load(const QUrl &location, const char *format = Q_NULLPTR);
    void load(QIODevice *device, const char *format = Q_NULLPTR);

    bool save(const QUrl &location, const char *format = Q_NULLPTR);
    bool save(QIODevice * device, const char *format);

    Error error() const;
    QString errorString() const;

public Q_SLOTS:
    void shuffle();

    void next();
    void previous();

    void setCurrentIndex(int index);

Q_SIGNALS:
    void currentIndexChanged(int index);
    void playbackModeChanged(QMediaPlaylist::PlaybackMode mode);
    void currentMediaChanged(const QMediaContent&);

    void mediaAboutToBeInserted(int start, int end);
    void mediaInserted(int start, int end);
    void mediaAboutToBeRemoved(int start, int end);
    void mediaRemoved(int start, int end);
    void mediaChanged(int start, int end);

    void loaded();
    void loadFailed();

protected:
    bool setMediaObject(QMediaObject *object);
    QMediaPlaylistPrivate *d_ptr;

private:
    Q_DECLARE_PRIVATE(QMediaPlaylist)
    Q_PRIVATE_SLOT(d_func(), void _q_loadFailed(QMediaPlaylist::Error, const QString &))
};

QT_END_NAMESPACE

Q_DECLARE_METATYPE(QMediaPlaylist::PlaybackMode)
Q_DECLARE_METATYPE(QMediaPlaylist::Error)

Q_MEDIA_ENUM_DEBUG(QMediaPlaylist, PlaybackMode)
Q_MEDIA_ENUM_DEBUG(QMediaPlaylist, Error)

#endif  // QMEDIAPLAYLIST_H
