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100 lines
3 KiB
PHP
100 lines
3 KiB
PHP
<?php
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/**
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* @copyright Copyright 2022 Carl Schwan <carl@carlschwan.eu>
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* @license AGPL-3.0-or-later
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*
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* This code 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, version 3,
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* as published by the Free Software Foundation.
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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, version 3,
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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 OC\Metadata;
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use OC\Metadata\Provider\ExifProvider;
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use OCP\Files\File;
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class MetadataManager implements IMetadataManager {
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/** @var array<string, IMetadataProvider> */
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private array $providers;
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private array $providerClasses;
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private FileMetadataMapper $fileMetadataMapper;
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public function __construct(
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FileMetadataMapper $fileMetadataMapper
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) {
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$this->providers = [];
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$this->providerClasses = [];
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$this->fileMetadataMapper = $fileMetadataMapper;
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// TODO move to another place, where?
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$this->registerProvider(ExifProvider::class);
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}
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/**
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* @param class-string<IMetadataProvider> $className
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*/
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public function registerProvider(string $className):void {
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if (in_array($className, $this->providerClasses)) {
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return;
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}
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if (call_user_func([$className, 'isAvailable'])) {
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$this->providers[call_user_func([$className, 'getMimetypesSupported'])] = \OC::$server->get($className);
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}
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}
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public function generateMetadata(File $file, bool $checkExisting = false): void {
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$existingMetadataGroups = [];
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if ($checkExisting) {
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$existingMetadata = $this->fileMetadataMapper->findForFile($file->getId());
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foreach ($existingMetadata as $metadata) {
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$existingMetadataGroups[] = $metadata->getGroupName();
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}
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}
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foreach ($this->providers as $supportedMimetype => $provider) {
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if (preg_match($supportedMimetype, $file->getMimeType())) {
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if (count(array_diff($provider::groupsProvided(), $existingMetadataGroups)) > 0) {
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$metaDataGroup = $provider->execute($file);
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foreach ($metaDataGroup as $group => $metadata) {
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$this->fileMetadataMapper->insertOrUpdate($metadata);
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}
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}
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}
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}
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}
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public function clearMetadata(int $fileId): void {
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$this->fileMetadataMapper->clear($fileId);
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}
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/**
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* @return array<int, FileMetadata>
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*/
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public function fetchMetadataFor(string $group, array $fileIds): array {
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return $this->fileMetadataMapper->findForGroupForFiles($fileIds, $group);
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}
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public function getCapabilities(): array {
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$capabilities = [];
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foreach ($this->providers as $supportedMimetype => $provider) {
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foreach ($provider::groupsProvided() as $group) {
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if (isset($capabilities[$group])) {
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$capabilities[$group][] = $supportedMimetype;
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}
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$capabilities[$group] = [$supportedMimetype];
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}
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}
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return $capabilities;
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}
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}
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