/**

 * Copyright (c) 2010 Sasken Communication Technologies Ltd. 

 * All rights reserved.

 * This component and the accompanying materials are made available 

 * under the terms of the "Eclipse Public License v1.0"

 * which accompanies  this distribution, and is available 

 * at the URL "http://www.eclipse.org/legal/epl-v10.html"

 * 

 * Initial Contributors:

 * Chandradeep Gandhi, Sasken Communication Technologies Ltd - Initial contribution

 *

 * Contributors:

 * Manasij Roy, Nalina Hariharan

 * 

 * Description:

 * Interface specification for playlists service

 *

 */

#ifndef SMFPLAYLISTSERVICEPLUGIN_H_

#define SMFPLAYLISTSERVICEPLUGIN_H_

#include <smfpluginbase.h>

#include <smfplaylist.h>

#include <smfmusicprofile.h>

#include <smftrackinfo.h>

// Forward declaration

class SmfPluginManagerUtil;

/**

 * @ingroup smf_plugin_group

 * Interface specification for playlists service. This class provides 

 * basic functionality to allow applications to get playlists of a user, 

 * add some track to an existing playlist, post the current playing 

 * playlists etc.

 *

 * All of the functionality described here should be implemented by a service

 * specific plug-in.

 */

class SmfPlaylistServicePlugin : public SmfPluginBase

	{

	Q_OBJECT

public:

	/**

	 * Constructor with default argument

	 * @param aUtil The SmfPluginManagerUtil instance. The plugins can 

	 * call the method getAuthKeys() of this class, with its pluginID to 

	 * get the OAuth keys, keys are returned only if this plugin is 

	 * authorised by Smf franework

	 */

	SmfPlaylistServicePlugin( SmfPluginManagerUtil *aUtil );

	/**

	 * Destructor

	 */

	~SmfPlaylistServicePlugin( );

	/**

	 * Method to get the playlist

	 * @param aRequest [out] The request data to be sent to network

	 * @param aPageNum The page to be extracted

	 * @param aItemsPerPage Number of items per page

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError playlists( SmfPluginRequestData &aRequest,

			const int aPageNum = SMF_FIRST_PAGE, 

			const int aItemsPerPage = SMF_ITEMS_PER_PAGE ) = 0;

	/**

	 * Method to get the playlist of a particular user

	 * @param aRequest [out] The request data to be sent to network

	 * @param aUser The user whose playlists need to be fetched

	 * @param aPageNum The page to be extracted

	 * @param aItemsPerPage Number of items per page

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError playlistsOf( SmfPluginRequestData &aRequest,

			const SmfMusicProfile &aUser,

			const int aPageNum = SMF_FIRST_PAGE, 

			const int aItemsPerPage = SMF_ITEMS_PER_PAGE ) = 0;

	/**

	 * Method to add tracks to a playlist

	 * @param aRequest [out] The request data to be sent to network

	 * @param aPlaylist The playlist where tracks should be added

	 * @param aTracks The tracks to be added to the playlist

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError addToPlaylist( SmfPluginRequestData &aRequest,

			const SmfPlaylist &aPlaylist, 

			const QList<SmfTrackInfo> &aTracks ) = 0;

	/**

	 * Method to post the current playing playlist

	 * @param aRequest [out] The request data to be sent to network

	 * @param aPlaylist The current playing playlist which should be posted

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError postCurrentPlayingPlaylist(

			SmfPluginRequestData &aRequest, 

			const SmfPlaylist &aPlaylist ) = 0;

	};

Q_DECLARE_INTERFACE( SmfPlaylistServicePlugin, "org.symbian.smf.plugin.music.playlist/v1.0" );

#endif /* SMFPLAYLISTSERVICEPLUGIN_H_ */