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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2022 Louis Chmn <louis@chmn.me>
*
* @author Louis Chmn <louis@chmn.me>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Files_Versions\Db;
use OCP\AppFramework\Db\QBMapper;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
/**
* @extends QBMapper<VersionEntity>
*/
class VersionsMapper extends QBMapper {
public function __construct(IDBConnection $db) {
parent::__construct($db, 'files_versions', VersionEntity::class);
}
/**
* @return VersionEntity[]
*/
public function findAllVersionsForFileId(int $fileId): array {
$qb = $this->db->getQueryBuilder();
$qb->select('*')
->from($this->getTableName())
->where($qb->expr()->eq('file_id', $qb->createNamedParameter($fileId)));
return $this->findEntities($qb);
}
/**
* @return VersionEntity
*/
public function findCurrentVersionForFileId(int $fileId): VersionEntity {
$qb = $this->db->getQueryBuilder();
$qb->select('*')
->from($this->getTableName())
->where($qb->expr()->eq('file_id', $qb->createNamedParameter($fileId)))
->orderBy('timestamp', 'DESC')
->setMaxResults(1);
return $this->findEntity($qb);
}
public function findVersionForFileId(int $fileId, int $timestamp): VersionEntity {
$qb = $this->db->getQueryBuilder();
$qb->select('*')
->from($this->getTableName())
->where($qb->expr()->eq('file_id', $qb->createNamedParameter($fileId)))
->andWhere($qb->expr()->eq('timestamp', $qb->createNamedParameter($timestamp)));
return $this->findEntity($qb);
}
public function deleteAllVersionsForFileId(int $fileId): int {
$qb = $this->db->getQueryBuilder();
return $qb->delete($this->getTableName())
->where($qb->expr()->eq('file_id', $qb->createNamedParameter($fileId)))
->executeStatement();
}
public function deleteAllVersionsForUser(int $storageId, string $path = null): void {
$fileIdsGenerator = $this->getFileIdsGenerator($storageId, $path);
$versionEntitiesDeleteQuery = $this->db->getQueryBuilder();
$versionEntitiesDeleteQuery->delete($this->getTableName())
->where($versionEntitiesDeleteQuery->expr()->in('file_id', $versionEntitiesDeleteQuery->createParameter('file_ids')));
foreach ($fileIdsGenerator as $fileIds) {
$versionEntitiesDeleteQuery->setParameter('file_ids', $fileIds, IQueryBuilder::PARAM_INT_ARRAY);
$versionEntitiesDeleteQuery->executeStatement();
}
}
private function getFileIdsGenerator(int $storageId, ?string $path): \Generator {
$offset = 0;
do {
$filesIdsSelect = $this->db->getQueryBuilder();
$filesIdsSelect->select('fileid')
->from('filecache')
->where($filesIdsSelect->expr()->eq('storage', $filesIdsSelect->createNamedParameter($storageId, IQueryBuilder::PARAM_STR)))
->andWhere($filesIdsSelect->expr()->like('path', $filesIdsSelect->createNamedParameter('files' . ($path ? '/' . $this->db->escapeLikeParameter($path) : '') . '/%', IQueryBuilder::PARAM_STR)))
->andWhere($filesIdsSelect->expr()->gt('fileid', $filesIdsSelect->createParameter('offset')))
->setMaxResults(1000)
->orderBy('fileid', 'ASC');
$filesIdsSelect->setParameter('offset', $offset, IQueryBuilder::PARAM_INT);
$result = $filesIdsSelect->executeQuery();
$fileIds = $result->fetchAll(\PDO::FETCH_COLUMN);
$offset = end($fileIds);
yield $fileIds;
} while (!empty($fileIds));
}
}
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