130 lines
4.3 KiB
PHP
130 lines
4.3 KiB
PHP
<?php
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declare(strict_types=1);
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namespace OCA\Memories\Db;
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use OCP\DB\QueryBuilder\IQueryBuilder;
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use OCP\IDBConnection;
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trait TimelineQueryAlbums
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{
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protected IDBConnection $connection;
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/** Transform only for album */
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public function transformAlbumFilter(IQueryBuilder &$query, string $uid, string $albumId)
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{
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// Get album object
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$album = $this->getAlbumIfAllowed($query->getConnection(), $uid, $albumId);
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// Check permission
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if (null === $album) {
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throw new \Exception("Album {$albumId} not found");
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}
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// WHERE these are items with this album
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$query->innerJoin('m', 'photos_albums_files', 'paf', $query->expr()->andX(
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$query->expr()->eq('paf.album_id', $query->createNamedParameter($album['album_id'])),
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$query->expr()->eq('paf.file_id', 'm.fileid'),
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));
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}
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/** Get list of albums */
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public function getAlbums(string $uid, $shared=false)
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{
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$query = $this->connection->getQueryBuilder();
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// SELECT everything from albums
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$count = $query->func()->count($query->createFunction('DISTINCT m.fileid'), 'count');
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$query->select('pa.*', $count)->from('photos_albums', 'pa');
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if ($shared) {
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$query->innerJoin('pa', 'photos_collaborators', 'pc', $query->expr()->andX(
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$query->expr()->eq('pa.album_id', 'pc.album_id'),
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$query->expr()->eq('pc.collaborator_id', $query->createNamedParameter($uid)),
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));
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} else {
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$query->where(
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$query->expr()->eq('user', $query->createNamedParameter($uid)),
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);
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}
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// WHERE these are items with this album
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$query->leftJoin('pa', 'photos_albums_files', 'paf', $query->expr()->andX(
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$query->expr()->eq('paf.album_id', 'pa.album_id'),
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));
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// WHERE these items are memories indexed photos
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$query->leftJoin('paf', 'memories', 'm', $query->expr()->eq('m.fileid', 'paf.file_id'));
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// WHERE these photos are in the filecache
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$query->leftJoin('m', 'filecache', 'f', $query->expr()->eq('m.fileid', 'f.fileid'));
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// GROUP and ORDER by
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$query->groupBy('pa.album_id');
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$query->orderBy('pa.created', 'DESC');
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$query->addOrderBy('pa.album_id', 'DESC'); // tie-breaker
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// FETCH all albums
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$albums = $query->executeQuery()->fetchAll();
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// Post process
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foreach ($albums as &$row) {
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$row['album_id'] = (int) $row['album_id'];
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$row['created'] = (int) $row['created'];
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$row['last_added_photo'] = (int) $row['last_added_photo'];
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}
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return $albums;
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}
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/**
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* Get album if allowed. Also check if album is shared with user.
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*
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* @param IDBConnection $connection
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* @param string $uid UID of CURRENT user
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* @param string $albumId $user/$name where $user is the OWNER of the album
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*/
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private function getAlbumIfAllowed(IDBConnection $conn, string $uid, string $albumId)
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{
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// Split name and uid
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$parts = explode('/', $albumId);
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if (2 !== \count($parts)) {
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return null;
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}
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$albumUid = $parts[0];
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$albumName = $parts[1];
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// Check if owner
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$query = $conn->getQueryBuilder();
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$query->select('*')->from('photos_albums')->where(
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$query->expr()->andX(
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$query->expr()->eq('name', $query->createNamedParameter($albumName)),
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$query->expr()->eq('user', $query->createNamedParameter($albumUid)),
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)
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);
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$album = $query->executeQuery()->fetch();
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if (!$album) {
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return null;
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}
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// Check if user is owner
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if ($albumUid === $uid) {
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return $album;
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}
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// Check in collaborators instead
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$query = $conn->getQueryBuilder();
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$query->select('album_id')->from('photos_collaborators')->where(
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$query->expr()->andX(
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$query->expr()->eq('album_id', $query->createNamedParameter($album['album_id'])),
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$query->expr()->eq('collaborator_id', $query->createNamedParameter($uid)),
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)
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);
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if (false !== $query->executeQuery()->fetchOne()) {
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return $album;
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}
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}
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}
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