1 files changed, 115 insertions, 0 deletions
diff --git a/apps/files/lib/Command/Object/ObjectUtil.php b/apps/files/lib/Command/Object/ObjectUtil.php
new file mode 100644
index 00000000000..5f053c2c42f
--- /dev/null
+++ b/apps/files/lib/Command/Object/ObjectUtil.php
@@ -0,0 +1,115 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Files\Command\Object;
+
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\Files\ObjectStore\IObjectStore;
+use OCP\IConfig;
+use OCP\IDBConnection;
+use OCP\Util;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class ObjectUtil {
+	public function __construct(
+		private IConfig $config,
+		private IDBConnection $connection,
+	) {
+	}
+
+	private function getObjectStoreConfig(): ?array {
+		$config = $this->config->getSystemValue('objectstore_multibucket');
+		if (is_array($config)) {
+			$config['multibucket'] = true;
+			return $config;
+		}
+		$config = $this->config->getSystemValue('objectstore');
+		if (is_array($config)) {
+			if (!isset($config['multibucket'])) {
+				$config['multibucket'] = false;
+			}
+			return $config;
+		}
+
+		return null;
+	}
+
+	public function getObjectStore(?string $bucket, OutputInterface $output): ?IObjectStore {
+		$config = $this->getObjectStoreConfig();
+		if (!$config) {
+			$output->writeln('<error>Instance is not using primary object store</error>');
+			return null;
+		}
+		if ($config['multibucket'] && !$bucket) {
+			$output->writeln('<error>--bucket option required</error> because <info>multi bucket</info> is enabled.');
+			return null;
+		}
+
+		if (!isset($config['arguments'])) {
+			throw new \Exception('no arguments configured for object store configuration');
+		}
+		if (!isset($config['class'])) {
+			throw new \Exception('no class configured for object store configuration');
+		}
+
+		if ($bucket) {
+			// s3, swift
+			$config['arguments']['bucket'] = $bucket;
+			// azure
+			$config['arguments']['container'] = $bucket;
+		}
+
+		$store = new $config['class']($config['arguments']);
+		if (!$store instanceof IObjectStore) {
+			throw new \Exception('configured object store class is not an object store implementation');
+		}
+		return $store;
+	}
+
+	/**
+	 * Check if an object is referenced in the database
+	 */
+	public function objectExistsInDb(string $object): int|false {
+		if (!str_starts_with($object, 'urn:oid:')) {
+			return false;
+		}
+
+		$fileId = (int)substr($object, strlen('urn:oid:'));
+		$query = $this->connection->getQueryBuilder();
+		$query->select('fileid')
+			->from('filecache')
+			->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)));
+		$result = $query->executeQuery();
+
+		if ($result->fetchOne() === false) {
+			return false;
+		}
+
+		return $fileId;
+	}
+
+	public function formatObjects(\Iterator $objects, bool $humanOutput): \Iterator {
+		foreach ($objects as $object) {
+			yield $this->formatObject($object, $humanOutput);
+		}
+	}
+
+	public function formatObject(array $object, bool $humanOutput): array {
+		$row = array_merge([
+			'urn' => $object['urn'],
+		], ($object['metadata'] ?? []));
+
+		if ($humanOutput && isset($row['size'])) {
+			$row['size'] = Util::humanFileSize($row['size']);
+		}
+		if (isset($row['mtime'])) {
+			$row['mtime'] = $row['mtime']->format(\DateTimeImmutable::ATOM);
+		}
+		return $row;
+	}
+}