memories/lib/Db/TimelineQueryAlbums.php

130 lines
4.3 KiB
PHP

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