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<?php |
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/** |
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* ownCloud - Music app |
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* |
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* This file is licensed under the Affero General Public License version 3 or |
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* later. See the COPYING file. |
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* |
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* @author Morris Jobke <[email protected]> |
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* @author Volkan Gezer <[email protected]> |
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* @copyright Morris Jobke 2014 |
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* @copyright Volkan Gezer 2014 |
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*/ |
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namespace OCA\Music\Db; |
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use OCP\AppFramework\Db\Entity; |
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use OCP\IDb; |
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class PlaylistMapper extends BaseMapper { |
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public function __construct(IDb $db){ |
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parent::__construct($db, 'music_playlists', '\OCA\Music\Db\Playlist'); |
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} |
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/** |
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* @param string $condition |
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*/ |
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private function makeSelectQuery($condition=null){ |
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return 'SELECT `name`, `id` ' . |
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'FROM `*PREFIX*music_playlists` ' . |
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'WHERE `user_id` = ? ' . $condition; |
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} |
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/** |
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* @param string $userId |
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* @param integer $limit |
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* @param integer $offset |
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* @return Playlist[] |
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*/ |
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public function findAll($userId, $limit=null, $offset=null){ |
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$sql = $this->makeSelectQuery(); |
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$params = array($userId); |
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return $this->findEntities($sql, $params, $limit, $offset); |
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} |
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/** |
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* @param integer $id |
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* @param string $userId |
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* @return Playlist |
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*/ |
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public function find($id, $userId){ |
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$sql = $this->makeSelectQuery('AND `id` = ?'); |
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$params = array($userId, $id); |
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return $this->findEntity($sql, $params); |
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} |
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/** |
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* adds tracks to a playlist |
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* @param int[] $trackIds array of all track IDs to add |
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* @param int $id playlist ID |
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*/ |
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public function addTracks($trackIds, $id) { |
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$currentTrackIds = $this->getTracks($id); |
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// returns elements of $trackIds that are not in $currentTrackIds |
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$newTrackIds = array_diff($trackIds, $currentTrackIds); |
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$sql = 'INSERT INTO `*PREFIX*music_playlist_tracks` (`playlist_id`, ' . |
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'`track_id`) VALUES ( ?, ? )'; |
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// this is called for each track ID, because the is no identical way |
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// to do a multi insert for all supported databases |
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foreach ($newTrackIds as $trackId) { |
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$this->execute($sql, array($id, $trackId)); |
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} |
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} |
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/** |
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* gets track of a playlist |
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* @param int $id ID of the playlist |
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* @return int[] list of all track IDs |
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*/ |
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public function getTracks($id) { |
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$sql = 'SELECT `track_id` FROM `*PREFIX*music_playlist_tracks` '. |
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'WHERE `playlist_id` = ?'; |
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$result = $this->execute($sql, array($id)); |
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$trackIds = array(); |
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while($row = $result->fetchRow()){ |
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$trackIds[] = (int) $row['track_id']; |
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} |
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return $trackIds; |
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} |
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/** |
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* deletes a playlist |
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* @param integer[] $ids IDs of the entities to be deleted |
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*/ |
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public function deleteById($ids){ |
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$count = count($ids); |
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if($count === 0) { |
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return; |
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} |
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// delete from oc_music_playlists |
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parent::deleteById($ids); |
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// delete from oc_music_playlist_tracks |
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$questionMarks = '?'; |
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for($i = 1; $i < $count; $i++){ |
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$questionMarks .= ',?'; |
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} |
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$sql = 'DELETE FROM `*PREFIX*music_playlist_tracks` WHERE `playlist_id` IN ('. $questionMarks . ')'; |
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$this->execute($sql, $ids); |
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} |
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/** |
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* removes tracks from a playlist |
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* @param int $id playlist ID |
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* @param int[] $trackIds array of all track IDs to remove - if empty all tracks will be removed |
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*/ |
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public function removeTracks($id, $trackIds = null) { |
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// TODO delete multiple per SQL statement |
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$sql = 'DELETE FROM `*PREFIX*music_playlist_tracks` ' . |
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'WHERE `playlist_id` = ?'; |
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if(is_null($trackIds)) { |
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$this->execute($sql, array($id)); |
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} else { |
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$sql .= ' AND `track_id` = ?'; |
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foreach ($trackIds as $trackId) { |
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$this->execute($sql, array($id, $trackId)); |
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} |
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} |
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} |
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} |
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owncloud /
music
