* @license AGPL-3.0-or-later * * This code is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License, version 3, * as published by the Free Software Foundation. * * 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, version 3, * along with this program. If not, see * */ namespace OC\Metadata; use OC\Metadata\Provider\ExifProvider; use OCP\Files\File; class MetadataManager implements IMetadataManager { /** @var array */ private array $providers; private array $providerClasses; private FileMetadataMapper $fileMetadataMapper; public function __construct( FileMetadataMapper $fileMetadataMapper ) { $this->providers = []; $this->providerClasses = []; $this->fileMetadataMapper = $fileMetadataMapper; // TODO move to another place, where? $this->registerProvider(ExifProvider::class); } /** * @param class-string $className */ public function registerProvider(string $className):void { if (in_array($className, $this->providerClasses)) { return; } if (call_user_func([$className, 'isAvailable'])) { $this->providers[call_user_func([$className, 'getMimetypesSupported'])] = \OC::$server->get($className); } } public function generateMetadata(File $file, bool $checkExisting = false): void { $existingMetadataGroups = []; if ($checkExisting) { $existingMetadata = $this->fileMetadataMapper->findForFile($file->getId()); foreach ($existingMetadata as $metadata) { $existingMetadataGroups[] = $metadata->getGroupName(); } } foreach ($this->providers as $supportedMimetype => $provider) { if (preg_match($supportedMimetype, $file->getMimeType())) { if (count(array_diff($provider::groupsProvided(), $existingMetadataGroups)) > 0) { $metaDataGroup = $provider->execute($file); foreach ($metaDataGroup as $group => $metadata) { $this->fileMetadataMapper->insertOrUpdate($metadata); } } } } } public function clearMetadata(int $fileId): void { $this->fileMetadataMapper->clear($fileId); } public function fetchMetadataFor(string $group, array $fileIds): array { return $this->fileMetadataMapper->findForGroupForFiles($fileIds, $group); } public function getCapabilities(): array { $capabilities = []; foreach ($this->providers as $supportedMimetype => $provider) { foreach ($provider::groupsProvided() as $group) { if (isset($capabilities[$group])) { $capabilities[$group][] = $supportedMimetype; } $capabilities[$group] = [$supportedMimetype]; } } return $capabilities; } }