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<?php |
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declare(strict_types=1); |
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/** |
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* @copyright Copyright (c) 2016, Roeland Jago Douma <[email protected]> |
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* @copyright Copyright (c) 2017-2021 Matias De lellis <[email protected]> |
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* @copyright Copyright (c) 2021 Ming Tsang <[email protected]> |
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* |
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* @author Roeland Jago Douma <[email protected]> |
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* @author Matias De lellis <[email protected]> |
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* @author Ming Tsang <[email protected]> |
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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\FaceRecognition\Listener; |
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use OCP\EventDispatcher\Event; |
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use OCP\EventDispatcher\IEventListener; |
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use OCP\Files\Folder; |
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use OCP\Files\Events\Node\NodeDeletedEvent; |
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use OCA\FaceRecognition\Service\FileService; |
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use OCA\FaceRecognition\Service\SettingsService; |
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use OCA\FaceRecognition\Db\FaceMapper; |
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use OCA\FaceRecognition\Db\Image; |
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use OCA\FaceRecognition\Db\ImageMapper; |
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use OCA\FaceRecognition\Db\PersonMapper; |
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use Psr\Log\LoggerInterface; |
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class PostDeleteListener implements IEventListener { |
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/** @var LoggerInterface $logger */ |
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private $logger; |
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/** @var FaceMapper */ |
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private $faceMapper; |
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/** @var ImageMapper */ |
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private $imageMapper; |
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/** @var PersonMapper */ |
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private $personMapper; |
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/** @var SettingsService */ |
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private $settingsService; |
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/** @var FileService */ |
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private $fileService; |
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public function __construct(LoggerInterface $logger, |
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FaceMapper $faceMapper, |
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ImageMapper $imageMapper, |
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PersonMapper $personMapper, |
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SettingsService $settingsService, |
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FileService $fileService) |
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{ |
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$this->logger = $logger; |
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$this->faceMapper = $faceMapper; |
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$this->imageMapper = $imageMapper; |
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$this->personMapper = $personMapper; |
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$this->settingsService = $settingsService; |
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$this->fileService = $fileService; |
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} |
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/** |
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* A node has been deleted. Remove faces with file id |
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* with the current user in the DB |
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*/ |
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public function handle(Event $event): void { |
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if (!($event instanceof NodeDeletedEvent)) { |
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return; |
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} |
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$node = $event->getNode(); |
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if (!$this->fileService->isAllowedNode($node)) { |
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// Nextcloud sends the Hooks when create thumbnails for example. |
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return; |
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} |
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if ($node instanceof Folder) { |
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return; |
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} |
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$modelId = $this->settingsService->getCurrentFaceModel(); |
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if ($modelId === SettingsService::FALLBACK_CURRENT_MODEL) { |
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$this->logger->debug("Skipping deleting file since there are no configured model"); |
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return; |
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} |
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$owner = null; |
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if ($this->fileService->isUserFile($node)) { |
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$owner = $node->getOwner()->getUid(); |
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} else { |
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if (!\OC::$server->getUserSession()->isLoggedIn()) { |
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$this->logger->debug('Skipping deleting the file ' . $node->getName() . ' since we cannot determine the owner'); |
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return; |
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} |
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$owner = \OC::$server->getUserSession()->getUser()->getUID(); |
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} |
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$enabled = $this->settingsService->getUserEnabled($owner); |
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if (!$enabled) { |
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$this->logger->debug('The user ' . $owner . ' not have the analysis enabled. Skipping'); |
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return; |
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} |
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if ($node->getName() === FileService::NOMEDIA_FILE || |
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$node->getName() === FileService::NOIMAGE_FILE) { |
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// If user deleted file named .nomedia, that means all images in this and all child directories should be added. |
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// But, instead of doing that here, better option seem to be to just reset flag that image scan is not done. |
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// This will trigger another round of image crawling in AddMissingImagesTask for this user and those images will be added. |
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$this->settingsService->setUserFullScanDone(false, $owner); |
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return; |
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} |
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if ($node->getName() === FileService::FACERECOGNITION_SETTINGS_FILE) { |
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// This file can enable or disable the analysis, so I have to look for new files and forget others. |
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$this->settingsService->setNeedRemoveStaleImages(true, $owner); |
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$this->settingsService->setUserFullScanDone(false, $owner); |
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return; |
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} |
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if (!$this->settingsService->isAllowedMimetype($node->getMimeType())) { |
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// The file is not an image or the model does not support it |
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return; |
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} |
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$this->logger->debug("Deleting image " . $node->getName() . " from face recognition"); |
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$image = new Image(); |
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$image->setUser($owner); |
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$image->setFile($node->getId()); |
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$image->setModel($modelId); |
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$imageId = $this->imageMapper->imageExists($image); |
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if ($imageId !== null) { |
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// note that invalidatePersons depends on existence of faces for a given image, |
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// and we must invalidate before we delete faces! |
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$this->personMapper->invalidatePersons($imageId); |
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// Fetch all faces to be deleted before deleting them, and then delete them |
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$facesToRemove = $this->faceMapper->findByImage($imageId); |
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$this->faceMapper->removeFromImage($imageId); |
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$image->setId($imageId); |
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$this->imageMapper->delete($image); |
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// If any person is now without faces, remove those (empty) persons |
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foreach ($facesToRemove as $faceToRemove) { |
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if ($faceToRemove->getPerson() !== null) { |
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$this->personMapper->removeIfEmpty($faceToRemove->getPerson()); |
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} |
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} |
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} |
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} |
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} |
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matiasdelellis /
facerecognition
