Passed
Push — shared-storage-experiments ( 606554...2addb2 )
by Matias
08:21
created

AddMissingImagesTask::__construct()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 7
Code Lines 4

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 0
CRAP Score 2

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 1
eloc 4
c 1
b 0
f 0
nc 1
nop 3
dl 0
loc 7
ccs 0
cts 5
cp 0
crap 2
rs 10
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<?php
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/**
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 * @copyright Copyright (c) 2017, Matias De lellis <[email protected]>
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 * @copyright Copyright (c) 2018, Branko Kokanovic <[email protected]>
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 *
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 * @author Branko Kokanovic <[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\BackgroundJob\Tasks;
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use OCP\IConfig;
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use OCP\IUser;
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use OCP\Files\File;
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use OCP\Files\Folder;
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use OCA\FaceRecognition\BackgroundJob\FaceRecognitionBackgroundTask;
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use OCA\FaceRecognition\BackgroundJob\FaceRecognitionContext;
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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\Helper\Requirements;
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use OCA\FaceRecognition\Migration\AddDefaultFaceModel;
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use OCA\FaceRecognition\Service\FileService;
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/**
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 * Task that, for each user, crawls for all images in filesystem and insert them in database.
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 * This is job that normally does file watcher, but this should be done at least once,
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 * after app is installed (or re-enabled).
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 */
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class AddMissingImagesTask extends FaceRecognitionBackgroundTask {
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	const FULL_IMAGE_SCAN_DONE_KEY = "full_image_scan_done";
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	/** @var IConfig Config */
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	private $config;
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	/** @var ImageMapper Image mapper */
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	private $imageMapper;
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	/** @var FileService */
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	private $fileService;
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	/**
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	 * @param IConfig $config Config
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	 * @param ImageMapper $imageMapper Image mapper
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	 * @param FileService $fileService File Service
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	 */
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	public function __construct(IConfig     $config,
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	                            ImageMapper $imageMapper,
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	                            FileService $fileService) {
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		parent::__construct();
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		$this->config      = $config;
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		$this->imageMapper = $imageMapper;
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		$this->fileService = $fileService;
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	}
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	/**
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	 * @inheritdoc
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	 */
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	public function description() {
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		return "Crawl for missing images for each user and insert them in DB";
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	}
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	/**
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	 * @inheritdoc
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	 */
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	public function execute(FaceRecognitionContext $context) {
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		$this->setContext($context);
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		$model = intval($this->config->getAppValue('facerecognition', 'model', AddDefaultFaceModel::DEFAULT_FACE_MODEL_ID));
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		// Check if we are called for one user only, or for all user in instance.
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		$insertedImages = 0;
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		$eligable_users = array();
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		if (is_null($this->context->user)) {
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			$this->context->userManager->callForSeenUsers(function (IUser $user) use (&$eligable_users) {
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				$eligable_users[] = $user->getUID();
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			});
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		} else {
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			$eligable_users[] = $this->context->user->getUID();
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		}
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		foreach($eligable_users as $user) {
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			$userEnabled = $this->config->getUserValue($user, 'facerecognition', 'enabled', 'false');
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			if ($userEnabled === 'false') {
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				// Completely skip this task for this user, seems that disable analysis
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				$this->logInfo('Skipping image scan for user ' . $user . ' that has disabled the analysis');
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				continue;
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			}
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			$fullImageScanDone = $this->config->getUserValue($user, 'facerecognition', AddMissingImagesTask::FULL_IMAGE_SCAN_DONE_KEY, 'false');
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			if ($fullImageScanDone === 'true') {
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				// Completely skip this task for this user, seems that we already did full scan for him
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				$this->logDebug('Skipping full image scan for user ' . $user);
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				continue;
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			}
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			$insertedImages += $this->addMissingImagesForUser($user, $model);
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			$this->config->setUserValue($user, 'facerecognition', AddMissingImagesTask::FULL_IMAGE_SCAN_DONE_KEY, 'true');
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			yield;
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		}
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		$this->context->propertyBag['AddMissingImagesTask_insertedImages'] = $insertedImages;
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		return true;
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	}
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	/**
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	 * Crawl filesystem for a given user
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	 *
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	 * @param string $userId ID of the user for which to crawl images for
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	 * @param int $model Used model
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	 * @return int Number of missing images found
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	 */
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	private function addMissingImagesForUser(string $userId, int $model): int {
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		$this->logInfo(sprintf('Finding missing images for user %s', $userId));
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		$this->fileService->setupFS($userId);
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		$userFolder = $this->context->rootFolder->getUserFolder($userId);
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		return $this->parseUserFolder($userId, $model, $userFolder);
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	}
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	/**
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	 * Recursively crawls given folder for a given user
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	 *
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	 * @param int $model Used model
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	 * @param Folder $folder Folder to recursively search images in
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	 * @return int Number of missing images found
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	 */
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	private function parseUserFolder(string $userId, int $model, Folder $folder): int {
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		$insertedImages = 0;
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		$nodes = $this->getPicturesFromFolder($folder);
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		foreach ($nodes as $file) {
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			$this->logDebug('Found ' . $file->getPath());
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			$image = new Image();
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			$image->setUser($userId);
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			$image->setFile($file->getId());
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			$image->setModel($model);
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			// todo: this check/insert logic for each image is so inefficient it hurts my mind
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			if ($this->imageMapper->imageExists($image) === 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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				$insertedImages++;
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			}
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		}
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		return $insertedImages;
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	}
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	/**
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	 * Return all images from a given folder.
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	 *
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	 * TODO: It is inefficient since it copies the array recursively.
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	 *
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	 * @param Folder $folder Folder to get images from
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	 * @return array List of all images and folders to continue recursive crawling
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	 */
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	private function getPicturesFromFolder(Folder $folder, $results = array()) {
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		$handleSharedFiles = $this->config->getAppValue('facerecognition', 'handle-shared-files', 'false');
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		$nodes = $folder->getDirectoryListing();
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		foreach ($nodes as $node) {
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			if (!$this->fileService->isUserFile($node) &&
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			    ($this->fileService->isSharedFile($node) && $handleSharedFiles !== 'true')) {
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				$this->logDebug('Ignore ' . $node->getPath() . ' since is shared and is disabled');
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				continue;
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			}
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			if ($node instanceof Folder and !$node->nodeExists('.nomedia')) {
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				$results = $this->getPicturesFromFolder($node, $results);
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			} else if ($node instanceof File) {
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				if (Requirements::isImageTypeSupported($node->getMimeType())) {
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					$results[] = $node;
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				}
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			}
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		}
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		return $results;
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	}
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}
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