Passed
Push — fix-hooks ( c75b48...927e83 )
by Matias
02:17
created

Watcher::__construct()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 15
Code Lines 7

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 8
CRAP Score 1

Importance

Changes 0
Metric Value
cc 1
eloc 7
nc 1
nop 7
dl 0
loc 15
ccs 8
cts 8
cp 1
crap 1
rs 10
c 0
b 0
f 0
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<?php
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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, Matias De lellis <[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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 *
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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;
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use OCP\Files\Folder;
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use OCP\Files\IHomeStorage;
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use OCP\Files\Node;
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use OCP\IConfig;
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use OCP\IDBConnection;
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use OCP\ILogger;
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use OCP\IUserManager;
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use OCA\FaceRecognition\BackgroundJob\Tasks\AddMissingImagesTask;
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use OCA\FaceRecognition\Db\Face;
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use OCA\FaceRecognition\Db\Image;
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use OCA\FaceRecognition\Db\FaceMapper;
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use OCA\FaceRecognition\Db\ImageMapper;
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use OCA\FaceRecognition\Db\PersonMapper;
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use OCA\FaceRecognition\Helper\Requirements;
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use OCA\FaceRecognition\Migration\AddDefaultFaceModel;
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class Watcher {
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	/** @var IConfig Config */
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	private $config;
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	/** @var ILogger Logger */
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	private $logger;
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	/** @var IDBConnection */
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	private $connection;
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	/** @var IUserManager */
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	private $userManager;
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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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	/**
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	 * Watcher constructor.
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	 *
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	 * @param IConfig $config
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	 * @param ILogger $logger
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	 * @param IDBConnection $connection
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	 * @param IUserManager $userManager
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	 * @param FaceMapper $faceMapper
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	 * @param ImageMapper $imageMapper
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	 * @param PersonMapper $personMapper
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	 */
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	public function __construct(IConfig       $config,
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	                            ILogger       $logger,
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	                            IDBConnection $connection,
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	                            IUserManager  $userManager,
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	                            FaceMapper    $faceMapper,
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	                            ImageMapper   $imageMapper,
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	                            PersonMapper  $personMapper)
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	{
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		$this->config = $config;
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		$this->logger = $logger;
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		$this->connection = $connection;
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		$this->userManager = $userManager;
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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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	}
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	/**
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	 * A node has been updated. We just store the file id
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	 * with the current user in the DB
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	 *
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	 * @param Node $node
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	 */
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	public function postWrite(Node $node) {
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		$model = intval($this->config->getAppValue('facerecognition', 'model', AddDefaultFaceModel::DEFAULT_FACE_MODEL_ID));
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		// FIXME: Can we know if it is a local or shared file?
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		// todo: should we also care about this too: instanceOfStorage(ISharedStorage::class);
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		/*if ($node->getStorage()->instanceOfStorage(IHomeStorage::class) === false) {
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			return;
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		}*/
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		if ($node instanceof Folder) {
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			return;
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		}
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		// todo: issue #37 - if we detect .nomedia written, reset some global flag such that RemoveMissingImagesTask is triggered.
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		if (!Requirements::isImageTypeSupported($node->getMimeType())) {
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			return;
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		}
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		// NOTE: The hooks also report the creation of thumbnails, and other files.
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		// The way to differentiate between them, is that the user files starting with the userId, and the thumbains as appdata_ocs######
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		$absPath = ltrim($node->getPath(), '/');
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		$owner = explode('/', $absPath)[0];
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		if (!$this->userManager->userExists($owner)) {
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			return;
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		}
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		// If we detect .nomedia file anywhere on the path to root folder (id===null), bail out
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		$parentNode = $node->getParent();
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		while (($parentNode instanceof Folder) && ($parentNode->getId() !== null)) {
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			if ($parentNode->nodeExists('.nomedia')) {
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				$this->logger->debug(
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					"Skipping inserting image " . $node->getName() . " because directory " . $parentNode->getName() . " contains .nomedia file");
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				return;
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			}
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			$parentNode = $parentNode->getParent();
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		}
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		$this->logger->debug("Inserting/updating image " . $node->getName() . " for 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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		$image->setModel($model);
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		$imageId = $this->imageMapper->imageExists($image);
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		if ($imageId === null) {
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			// todo: can we have larger transaction with bulk insert?
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			$this->imageMapper->insert($image);
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		} else {
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			$this->imageMapper->resetImage($image);
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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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			$this->faceMapper->removeFaces($imageId);
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		}
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	}
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	/**
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	 * A node has been delete. Remove faces with file id
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	 * with the current user in the DB
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	 *
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	 * @param Node $node
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	 */
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	public function postDelete(Node $node) {
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		$model = intval($this->config->getAppValue('facerecognition', 'model', AddDefaultFaceModel::DEFAULT_FACE_MODEL_ID));
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		// todo: should we also care about this too: instanceOfStorage(ISharedStorage::class);
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		if ($node->getStorage()->instanceOfStorage(IHomeStorage::class) === false) {
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			return;
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		}
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		if ($node instanceof Folder) {
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			return;
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		}
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		if ($node->getName() === '.nomedia') {
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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 global flag that image scan is not done.
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			// This will trigger another round of image crawling in AddMissingImagesTask and those images will be added.
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			$this->config->setAppValue('facerecognition', AddMissingImagesTask::FULL_IMAGE_SCAN_DONE_KEY, 'false');
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			return;
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		}
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		if (!Requirements::isImageTypeSupported($node->getMimeType())) {
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			return;
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		}
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		$owner = $node->getOwner()->getUid();
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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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		$image->setModel($model);
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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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			$this->faceMapper->removeFaces($imageId);
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			$image->setId($imageId);
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			$this->imageMapper->delete($image);
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		}
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	}
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}
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