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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 Pauli Järvinen <[email protected]> |
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* @copyright Pauli Järvinen 2016 - 2020 |
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*/ |
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namespace OCA\Music\BusinessLayer; |
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use \OCA\Music\AppFramework\BusinessLayer\BusinessLayer; |
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use \OCA\Music\AppFramework\Core\Logger; |
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use \OCA\Music\Db\PlaylistMapper; |
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use \OCA\Music\Db\Playlist; |
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use \OCA\Music\Utility\Util; |
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class PlaylistBusinessLayer extends BusinessLayer { |
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private $logger; |
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private $trackBusinessLayer; |
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public function __construct( |
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PlaylistMapper $playlistMapper, |
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TrackBusinessLayer $trackBusinessLayer, |
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Logger $logger) { |
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parent::__construct($playlistMapper); |
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$this->logger = $logger; |
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$this->trackBusinessLayer = $trackBusinessLayer; |
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} |
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public function addTracks($trackIds, $playlistId, $userId) { |
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$playlist = $this->find($playlistId, $userId); |
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$prevTrackIds = $playlist->getTrackIdsAsArray(); |
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$playlist->setTrackIdsFromArray(\array_merge($prevTrackIds, $trackIds)); |
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$this->mapper->update($playlist); |
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return $playlist; |
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} |
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public function removeTracks($trackIndices, $playlistId, $userId) { |
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$playlist = $this->find($playlistId, $userId); |
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$trackIds = $playlist->getTrackIdsAsArray(); |
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$trackIds = \array_diff_key($trackIds, \array_flip($trackIndices)); |
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$playlist->setTrackIdsFromArray($trackIds); |
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$this->mapper->update($playlist); |
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return $playlist; |
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} |
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public function moveTrack($fromIndex, $toIndex, $playlistId, $userId) { |
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$playlist = $this->find($playlistId, $userId); |
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$trackIds = $playlist->getTrackIdsAsArray(); |
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$movedTrack = \array_splice($trackIds, $fromIndex, 1); |
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\array_splice($trackIds, $toIndex, 0, $movedTrack); |
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$playlist->setTrackIdsFromArray($trackIds); |
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$this->mapper->update($playlist); |
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return $playlist; |
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} |
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public function create($name, $userId) { |
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$playlist = new Playlist(); |
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$playlist->setName(Util::truncate($name, 256)); // some DB setups can't truncate automatically to column max size |
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$playlist->setUserId($userId); |
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return $this->mapper->insert($playlist); |
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} |
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public function rename($name, $playlistId, $userId) { |
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$playlist = $this->find($playlistId, $userId); |
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$playlist->setName(Util::truncate($name, 256)); // some DB setups can't truncate automatically to column max size |
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$this->mapper->update($playlist); |
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return $playlist; |
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} |
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/** |
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* removes tracks from all available playlists |
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* @param int[] $trackIds array of all track IDs to remove |
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*/ |
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public function removeTracksFromAllLists($trackIds) { |
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foreach ($trackIds as $trackId) { |
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$affectedLists = $this->mapper->findListsContainingTrack($trackId); |
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foreach ($affectedLists as $playlist) { |
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$prevTrackIds = $playlist->getTrackIdsAsArray(); |
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$playlist->setTrackIdsFromArray(\array_diff($prevTrackIds, [$trackId])); |
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$this->mapper->update($playlist); |
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} |
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} |
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} |
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/** |
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* get list of Track objects belonging to a given playlist |
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* @param int $playlistId |
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* @param string $userId |
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* @param int|null $limit |
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* @param int|null $offset |
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* @return Track[] |
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*/ |
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public function getPlaylistTracks($playlistId, $userId, $limit=null, $offset=null) { |
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$playlist = $this->find($playlistId, $userId); |
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$trackIds = $playlist->getTrackIdsAsArray(); |
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$trackIds = \array_slice($trackIds, \intval($offset), $limit); |
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$tracks = empty($trackIds) ? [] : $this->trackBusinessLayer->findById($trackIds, $userId); |
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// The $tracks contains the songs in unspecified order and with no duplicates. |
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// Build a new array where the tracks are in the same order as in $trackIds. |
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// First create an index as a middle-step. |
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$tracksById = Util::createIdLookupTable($tracks); |
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$playlistTracks = []; |
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foreach ($trackIds as $index => $trackId) { |
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$track = $tracksById[$trackId]; |
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// in case the same track comes up again in the list, clone the track object |
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// to have different number of the instances |
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if ($track->getNumberOnPlaylist() !== null) { |
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$track = clone $track; |
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} |
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$track->setNumberOnPlaylist(\intval($offset) + $index + 1); |
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$playlistTracks[] = $track; |
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} |
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return $playlistTracks; |
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} |
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/** |
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* get the total duration of all the tracks on a playlist |
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* |
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* @param int $playlistId |
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* @param string $userId |
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* @return int duration in seconds |
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*/ |
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public function getDuration($playlistId, $userId) { |
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$playlist = $this->find ( $playlistId, $userId ); |
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$trackIds = $playlist->getTrackIdsAsArray (); |
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$durations = $this->trackBusinessLayer->mapper->getDurations ( $trackIds ); |
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// We can't simply sum up the values of $durations array, because the playlist may |
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// contain duplicate entries, and those are not reflected in $durations. |
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$sum = 0; |
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foreach ( $trackIds as $trackId ) { |
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$sum += $durations [$trackId]; |
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} |
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return $sum; |
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} |
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} |
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owncloud /
music
