115 lines
3.2 KiB
PHP
115 lines
3.2 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2018 Robin Appelman <robin@icewind.nl>
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*
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* @author Robin Appelman <robin@icewind.nl>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\Files_Versions\Versions;
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use OCP\Files\File;
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use OCP\Files\FileInfo;
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use OCP\Files\Storage\IStorage;
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use OCP\IUser;
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class VersionManager implements IVersionManager {
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/** @var (IVersionBackend[])[] */
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private $backends = [];
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public function registerBackend(string $storageType, IVersionBackend $backend) {
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if (!isset($this->backends[$storageType])) {
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$this->backends[$storageType] = [];
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}
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$this->backends[$storageType][] = $backend;
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}
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/**
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* @return (IVersionBackend[])[]
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*/
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private function getBackends(): array {
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return $this->backends;
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}
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/**
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* @param IStorage $storage
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* @return IVersionBackend
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* @throws BackendNotFoundException
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*/
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public function getBackendForStorage(IStorage $storage): IVersionBackend {
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$fullType = get_class($storage);
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$backends = $this->getBackends();
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$foundType = '';
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$foundBackend = null;
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foreach ($backends as $type => $backendsForType) {
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if (
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$storage->instanceOfStorage($type) &&
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($foundType === '' || is_subclass_of($type, $foundType))
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) {
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foreach ($backendsForType as $backend) {
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/** @var IVersionBackend $backend */
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if ($backend->useBackendForStorage($storage)) {
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$foundBackend = $backend;
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$foundType = $type;
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}
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}
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}
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}
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if ($foundType === '' || $foundBackend === null) {
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throw new BackendNotFoundException("Version backend for $fullType not found");
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} else {
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return $foundBackend;
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}
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}
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public function getVersionsForFile(IUser $user, FileInfo $file): array {
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$backend = $this->getBackendForStorage($file->getStorage());
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return $backend->getVersionsForFile($user, $file);
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}
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public function createVersion(IUser $user, FileInfo $file) {
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$backend = $this->getBackendForStorage($file->getStorage());
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$backend->createVersion($user, $file);
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}
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public function rollback(IVersion $version) {
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$backend = $version->getBackend();
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return $backend->rollback($version);
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}
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public function read(IVersion $version) {
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$backend = $version->getBackend();
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return $backend->read($version);
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}
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public function getVersionFile(IUser $user, FileInfo $sourceFile, $revision): File {
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$backend = $this->getBackendForStorage($sourceFile->getStorage());
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return $backend->getVersionFile($user, $sourceFile, $revision);
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}
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public function useBackendForStorage(IStorage $storage): bool {
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return false;
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}
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}
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