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- <?php
- /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Daniel Kesselberg <mail@danielkesselberg.de>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Vincent Petry <vincent@nextcloud.com>
- *
- * @license AGPL-3.0
- *
- * 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 <http://www.gnu.org/licenses/>
- *
- */
-
- namespace OCA\Files\Service;
-
- use OCA\Files\Activity\FavoriteProvider;
- use OCP\Activity\IManager;
- use OCP\Files\Folder;
- use OCP\ITags;
- use OCP\IUser;
- use OCP\IUserSession;
- use Symfony\Component\EventDispatcher\EventDispatcherInterface;
- use Symfony\Component\EventDispatcher\GenericEvent;
-
- /**
- * Service class to manage tags on files.
- */
- class TagService {
-
- /** @var IUserSession */
- private $userSession;
- /** @var IManager */
- private $activityManager;
- /** @var ITags */
- private $tagger;
- /** @var Folder */
- private $homeFolder;
- /** @var EventDispatcherInterface */
- private $dispatcher;
-
- /**
- * @param IUserSession $userSession
- * @param IManager $activityManager
- * @param ITags $tagger
- * @param Folder $homeFolder
- * @param EventDispatcherInterface $dispatcher
- */
- public function __construct(
- IUserSession $userSession,
- IManager $activityManager,
- ITags $tagger,
- Folder $homeFolder,
- EventDispatcherInterface $dispatcher
- ) {
- $this->userSession = $userSession;
- $this->activityManager = $activityManager;
- $this->tagger = $tagger;
- $this->homeFolder = $homeFolder;
- $this->dispatcher = $dispatcher;
- }
-
- /**
- * Updates the tags of the specified file path.
- * The passed tags are absolute, which means they will
- * replace the actual tag selection.
- *
- * @param string $path path
- * @param array $tags array of tags
- * @return array list of tags
- * @throws \OCP\Files\NotFoundException if the file does not exist
- */
- public function updateFileTags($path, $tags) {
- $fileId = $this->homeFolder->get($path)->getId();
-
- $currentTags = $this->tagger->getTagsForObjects([$fileId]);
-
- if (!empty($currentTags)) {
- $currentTags = current($currentTags);
- }
-
- $newTags = array_diff($tags, $currentTags);
- foreach ($newTags as $tag) {
- if ($tag === ITags::TAG_FAVORITE) {
- $this->addActivity(true, $fileId, $path);
- }
- $this->tagger->tagAs($fileId, $tag);
- }
- $deletedTags = array_diff($currentTags, $tags);
- foreach ($deletedTags as $tag) {
- if ($tag === ITags::TAG_FAVORITE) {
- $this->addActivity(false, $fileId, $path);
- }
- $this->tagger->unTag($fileId, $tag);
- }
-
- // TODO: re-read from tagger to make sure the
- // list is up to date, in case of concurrent changes ?
- return $tags;
- }
-
- /**
- * @param bool $addToFavorite
- * @param int $fileId
- * @param string $path
- */
- protected function addActivity($addToFavorite, $fileId, $path) {
- $user = $this->userSession->getUser();
- if (!$user instanceof IUser) {
- return;
- }
-
- $eventName = $addToFavorite ? 'addFavorite' : 'removeFavorite';
- $this->dispatcher->dispatch(self::class . '::' . $eventName, new GenericEvent(null, [
- 'userId' => $user->getUID(),
- 'fileId' => $fileId,
- 'path' => $path,
- ]));
-
- $event = $this->activityManager->generateEvent();
- try {
- $event->setApp('files')
- ->setObject('files', $fileId, $path)
- ->setType('favorite')
- ->setAuthor($user->getUID())
- ->setAffectedUser($user->getUID())
- ->setTimestamp(time())
- ->setSubject(
- $addToFavorite ? FavoriteProvider::SUBJECT_ADDED : FavoriteProvider::SUBJECT_REMOVED,
- ['id' => $fileId, 'path' => $path]
- );
- $this->activityManager->publish($event);
- } catch (\InvalidArgumentException $e) {
- } catch (\BadMethodCallException $e) {
- }
- }
- }
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