nextcloud/apps/files_versions/lib/Versions/IVersionBackend.php

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<?php declare(strict_types=1);
/**
* @copyright Copyright (c) 2018 Robin Appelman <robin@icewind.nl>
*
* @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\Versions;
use OCP\Files\File;
use OCP\Files\FileInfo;
use OCP\Files\NotFoundException;
use OCP\Files\SimpleFS\ISimpleFile;
use OCP\Files\Storage\IStorage;
use OCP\IUser;
/**
* @since 15.0.0
*/
interface IVersionBackend {
/**
* Whether or not this version backend should be used for a storage
*
* If false is returned then the next applicable backend will be used
*
* @param IStorage $storage
* @return bool
* @since 17.0.0
*/
public function useBackendForStorage(IStorage $storage): bool;
/**
* Get all versions for a file
*
* @param IUser $user
* @param FileInfo $file
* @return IVersion[]
* @since 15.0.0
*/
public function getVersionsForFile(IUser $user, FileInfo $file): array;
/**
* Create a new version for a file
*
* @param IUser $user
* @param FileInfo $file
* @since 15.0.0
*/
public function createVersion(IUser $user, FileInfo $file);
/**
* Restore this version
*
* @param IVersion $version
* @since 15.0.0
*/
public function rollback(IVersion $version);
/**
* Open the file for reading
*
* @param IVersion $version
* @return resource
* @throws NotFoundException
* @since 15.0.0
*/
public function read(IVersion $version);
/**
* Get the preview for a specific version of a file
*
* @param IUser $user
* @param FileInfo $sourceFile
* @param int $revision
* @return ISimpleFile
* @since 15.0.0
*/
public function getVersionFile(IUser $user, FileInfo $sourceFile, int $revision): File;
}