Add command: recognize:reset-face-clusters

Signed-off-by: Marcel Klehr <[email protected]>

appinfo/info.xml

@@ -62,6 +62,7 @@ The app does not send any sensitive data to cloud providers or similar services.
 
 	<commands>
 		<command>OCA\Recognize\Command\ResetFaces</command>
+		<command>OCA\Recognize\Command\ResetFaceClusters</command>
 		<command>OCA\Recognize\Command\ResetTags</command>
 		<command>OCA\Recognize\Command\RemoveLegacyTags</command>
 		<command>OCA\Recognize\Command\CleanupTags</command>

lib/Command/ResetFaceClusters.php

@@ -0,0 +1,55 @@
+<?php
+/*
+ * Copyright (c) 2022 The Recognize contributors.
+ * This file is licensed under the Affero General Public License version 3 or later. See the COPYING file.
+ */
+
+namespace OCA\Recognize\Command;
+
+use OCA\Recognize\Db\FaceClusterMapper;
+use OCA\Recognize\Db\FaceDetectionMapper;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class ResetFaceClusters extends Command {
+	private FaceDetectionMapper $faceDetectionMapper;
+	private FaceClusterMapper $clusterMapper;
+
+	public function __construct(FaceDetectionMapper $faceDetectionMapper, FaceClusterMapper $clusterMapper) {
+		parent::__construct();
+		$this->faceDetectionMapper = $faceDetectionMapper;
+		$this->clusterMapper = $clusterMapper;
+	}
+
+	/**
+	 * Configure the command
+	 *
+	 * @return void
+	 */
+	protected function configure() {
+		$this->setName('recognize:reset-face-clusters')
+			->setDescription('Remove all face clusters. Detected face will stay intact.');
+	}
+
+	/**
+	 * Execute the command
+	 *
+	 * @param InputInterface  $input
+	 * @param OutputInterface $output
+	 *
+	 * @return int
+	 */
+	protected function execute(InputInterface $input, OutputInterface $output): int {
+		try {
+			$this->clusterMapper->deleteAll();
+			$this->faceDetectionMapper->removeAllClusters();
+		} catch (\Exception $ex) {
+			$output->writeln('<error>Failed to reset face clusters</error>');
+			$output->writeln($ex->getMessage());
+			return 1;
+		}
+
+		return 0;
+	}
+}

lib/Db/FaceDetectionMapper.php

@@ -164,6 +164,14 @@ public function findClusterSample(int $clusterId, int $n) {
 		return $this->findEntities($qb);
 	}
 
+	public function removeAllClusters(): void {
+		$qb = $this->db->getQueryBuilder();
+		$qb->update('recognize_face_detections')
+			->set('cluster_id', $qb->createPositionalParameter(null))
+			->where($qb->expr()->isNotNull('cluster_id'));
+		$qb->executeStatement();
+	}
+
 	protected function mapRowToEntity(array $row): Entity {
 		try {
 			return parent::mapRowToEntity($row);