/* This file is part of Clementine.
   Copyright 2010, David Sansome <me@davidsansome.com>

   Clementine 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 3 of the License, or
   (at your option) any later version.

   Clementine 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 Clementine.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef MPRIS2_H
#define MPRIS2_H

#include "playlist/playlistitem.h"

#include <QMetaObject>
#include <QObject>
#include <QtDBus>

#include <boost/scoped_ptr.hpp>

class MainWindow;
class Player;

typedef QList<QVariantMap> TrackMetadata;
typedef QList<QDBusObjectPath> TrackIds;
Q_DECLARE_METATYPE(TrackMetadata)

namespace mpris {

class ArtLoader;
class Mpris1;

class Mpris2 : public QObject {
  Q_OBJECT

  //org.mpris.MediaPlayer2 MPRIS 2.0 Root interface
  Q_PROPERTY( bool CanQuit READ CanQuit )
  Q_PROPERTY( bool CanRaise READ CanRaise )
  Q_PROPERTY( bool HasTrackList READ HasTrackList )
  Q_PROPERTY( QString Identity READ Identity )
  Q_PROPERTY( QString DesktopEntry READ DesktopEntry )
  Q_PROPERTY( QStringList SupportedUriSchemes READ SupportedUriSchemes )
  Q_PROPERTY( QStringList SupportedMimeTypes READ SupportedMimeTypes )

  //org.mpris.MediaPlayer2.Player MPRIS 2.0 Player interface
  Q_PROPERTY( QString PlaybackStatus READ PlaybackStatus )
  Q_PROPERTY( QString LoopStatus READ LoopStatus WRITE SetLoopStatus )
  Q_PROPERTY( double Rate READ Rate WRITE SetRate )
  Q_PROPERTY( bool Shuffle READ Shuffle WRITE SetShuffle )
  Q_PROPERTY( QVariantMap Metadata READ Metadata )
  Q_PROPERTY( double Volume READ Volume WRITE SetVolume )
  Q_PROPERTY( qlonglong Position READ Position )
  Q_PROPERTY( double MinimumRate READ MinimumRate )
  Q_PROPERTY( double MaximumRate READ MaximumRate )
  Q_PROPERTY( bool CanGoNext READ CanGoNext )
  Q_PROPERTY( bool CanGoPrevious READ CanGoPrevious )
  Q_PROPERTY( bool CanPlay READ CanPlay )
  Q_PROPERTY( bool CanPause READ CanPause )
  Q_PROPERTY( bool CanSeek READ CanSeek )
  Q_PROPERTY( bool CanControl READ CanControl )

  //org.mpris.MediaPlayer2.TrackList MPRIS 2.0 Player interface
  Q_PROPERTY( TrackIds Tracks READ Tracks )
  Q_PROPERTY( bool CanEditTracks READ CanEditTracks )

public:
  Mpris2(Player* player, ArtLoader* art_loader,
         Mpris1* mpris1, QObject* parent);

  // Root Properties
  bool CanQuit() const;
  bool CanRaise() const;
  bool HasTrackList() const;
  QString Identity() const;
  QString DesktopEntry() const;
  QStringList SupportedUriSchemes() const;
  QStringList SupportedMimeTypes() const;

  // Methods
  void Raise();
  void Quit();

  // Player Properties
  QString PlaybackStatus() const;
  QString LoopStatus() const;
  void SetLoopStatus(const QString& value);
  double Rate() const;
  void SetRate(double value);
  bool Shuffle() const;
  void SetShuffle(bool value);
  QVariantMap Metadata() const;
  double Volume() const;
  void SetVolume(double value);
  qlonglong Position() const;
  double MaximumRate() const;
  double MinimumRate() const;
  bool CanGoNext() const;
  bool CanGoPrevious() const;
  bool CanPlay() const;
  bool CanPause() const;
  bool CanSeek() const;
  bool CanControl() const;

  // Methods
  void Next();
  void Previous();
  void Pause();
  void PlayPause();
  void Stop();
  void Play();
  void Seek(qlonglong offset);
  void SetPosition(const QDBusObjectPath& trackId, qlonglong offset);
  void OpenUri(const QString& uri);

  // TrackList Properties
  TrackIds Tracks() const;
  bool CanEditTracks() const;

  // Methods
  TrackMetadata GetTracksMetadata(const TrackIds& tracks) const;
  void AddTrack(const QString& uri, const QDBusObjectPath& afterTrack, bool setAsCurrent);
  void RemoveTrack(const QDBusObjectPath& trackId);
  void GoTo(const QDBusObjectPath& trackId);

signals:
  // Player
  void Seeked(qlonglong position);

  // TrackList
  void TrackListReplaced(const TrackIds& Tracks, QDBusObjectPath CurrentTrack);
  void TrackAdded(const TrackMetadata& Metadata, QDBusObjectPath AfterTrack);
  void TrackRemoved(const QDBusObjectPath& trackId);
  void TrackMetadataChanged(const QDBusObjectPath& trackId, const TrackMetadata& metadata);

  void RaiseMainWindow();

private slots:
  void ArtLoaded(const Song& song, const QString& art_uri);
  void EngineStateChanged(Engine::State newState);
  void VolumeChanged();

  void PlaylistManagerInitialized();
  void CurrentSongChanged(const Song& song);
  void ShuffleModeChanged();
  void RepeatModeChanged();

private:
  void EmitNotification(const QString& name);
  void EmitNotification(const QString& name, const QVariant& val);

  QString PlaybackStatus(Engine::State state) const;

  QString current_track_id() const;

private:
  static const char* kMprisObjectPath;
  static const char* kServiceName;
  static const char* kFreedesktopPath;

  QVariantMap last_metadata_;

  Player* player_;
  Mpris1* mpris1_;
};

inline QString AsMPRISDateTimeType(uint time) {
  return time != -1 ? QDateTime::fromTime_t(time).toString(Qt::ISODate) : "";
}

} // namespace mpris

#endif