Refactors files app commands.

To improve code readability.

Signed-off-by: Faraz Samapoor <fsa@adlas.at>

apps/files/lib/Command/Delete.php

@@ -35,10 +35,9 @@ use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Question\ConfirmationQuestion;
 
 class Delete extends Command {
-	private FileUtils $fileUtils;
-
-	public function __construct(FileUtils $fileUtils) {
-		$this->fileUtils = $fileUtils;
+	public function __construct(
+		private FileUtils $fileUtils,
+	) {
 		parent::__construct();
 	}
 
@@ -58,7 +57,7 @@ class Delete extends Command {
 
 		if (!$node) {
 			$output->writeln("<error>file $fileInput not found</error>");
-			return 1;
+			return self::FAILURE;
 		}
 
 		$deleteConfirmed = $force;
@@ -72,7 +71,7 @@ class Delete extends Command {
 				$question = new ConfirmationQuestion("<info>$fileInput</info> in a shared file, do you want to unshare the file from <info>$user</info> instead of deleting the source file? [Y/n] ", true);
 				if ($helper->ask($input, $output, $question)) {
 					$storage->unshareStorage();
-					return 0;
+					return self::SUCCESS;
 				} else {
 					$node = $storage->getShare()->getNode();
 					$output->writeln("");
@@ -110,7 +109,6 @@ class Delete extends Command {
 			}
 		}
 
-		return 0;
+		return self::SUCCESS;
 	}
-
 }

apps/files/lib/Command/DeleteOrphanedFiles.php

@@ -35,17 +35,13 @@ use Symfony\Component\Console\Output\OutputInterface;
 class DeleteOrphanedFiles extends Command {
 	public const CHUNK_SIZE = 200;
 
-	/**
-	 * @var IDBConnection
-	 */
-	protected $connection;
-
-	public function __construct(IDBConnection $connection) {
-		$this->connection = $connection;
+	public function __construct(
+		protected IDBConnection $connection,
+	) {
 		parent::__construct();
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 			->setName('files:cleanup')
 			->setDescription('cleanup filecache');
@@ -81,10 +77,10 @@ class DeleteOrphanedFiles extends Command {
 
 		$deletedMounts = $this->cleanupOrphanedMounts();
 		$output->writeln("$deletedMounts orphaned mount entries deleted");
-		return 0;
+		return self::SUCCESS;
 	}
 
-	private function cleanupOrphanedMounts() {
+	private function cleanupOrphanedMounts(): int {
 		$deletedEntries = 0;
 
 		$query = $this->connection->getQueryBuilder();

apps/files/lib/Command/Get.php

@@ -32,10 +32,9 @@ use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class Get extends Command {
-	private FileUtils $fileUtils;
-
-	public function __construct(FileUtils $fileUtils) {
-		$this->fileUtils = $fileUtils;
+	public function __construct(
+		private FileUtils $fileUtils,
+	) {
 		parent::__construct();
 	}
 
@@ -54,36 +53,35 @@ class Get extends Command {
 
 		if (!$node) {
 			$output->writeln("<error>file $fileInput not found</error>");
-			return 1;
+			return self::FAILURE;
 		}
 
-		if ($node instanceof File) {
-			$isTTY = stream_isatty(STDOUT);
-			if ($outputName === null && $isTTY && $node->getMimePart() !== 'text') {
-				$output->writeln([
-					"<error>Warning: Binary output can mess up your terminal</error>",
-					"         Use <info>occ files:get $fileInput -</info> to output it to the terminal anyway",
-					"         Or <info>occ files:get $fileInput <FILE></info> to save to a file instead"
-				]);
-				return 1;
-			}
-			$source = $node->fopen('r');
-			if (!$source) {
-				$output->writeln("<error>Failed to open $fileInput for reading</error>");
-				return 1;
-			}
-			$target = ($outputName === null || $outputName === '-') ? STDOUT : fopen($outputName, 'w');
-			if (!$target) {
-				$output->writeln("<error>Failed to open $outputName for reading</error>");
-				return 1;
-			}
-
-			stream_copy_to_stream($source, $target);
-			return 0;
-		} else {
+		if (!($node instanceof File)) {
 			$output->writeln("<error>$fileInput is a directory</error>");
-			return 1;
+			return self::FAILURE;
 		}
-	}
 
+		$isTTY = stream_isatty(STDOUT);
+		if ($outputName === null && $isTTY && $node->getMimePart() !== 'text') {
+			$output->writeln([
+				"<error>Warning: Binary output can mess up your terminal</error>",
+				"         Use <info>occ files:get $fileInput -</info> to output it to the terminal anyway",
+				"         Or <info>occ files:get $fileInput <FILE></info> to save to a file instead"
+			]);
+			return self::FAILURE;
+		}
+		$source = $node->fopen('r');
+		if (!$source) {
+			$output->writeln("<error>Failed to open $fileInput for reading</error>");
+			return self::FAILURE;
+		}
+		$target = ($outputName === null || $outputName === '-') ? STDOUT : fopen($outputName, 'w');
+		if (!$target) {
+			$output->writeln("<error>Failed to open $outputName for reading</error>");
+			return self::FAILURE;
+		}
+
+		stream_copy_to_stream($source, $target);
+		return self::SUCCESS;
+	}
 }

apps/files/lib/Command/Object/Delete.php

@@ -34,10 +34,9 @@ use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Question\ConfirmationQuestion;
 
 class Delete extends Command {
-	private ObjectUtil $objectUtils;
-
-	public function __construct(ObjectUtil $objectUtils) {
-		$this->objectUtils = $objectUtils;
+	public function __construct(
+		private ObjectUtil $objectUtils,
+	) {
 		parent::__construct();
 	}
 
@@ -73,6 +72,6 @@ class Delete extends Command {
 		if ($helper->ask($input, $output, $question)) {
 			$objectStore->deleteObject($object);
 		}
-		return 0;
+		return self::SUCCESS;
 	}
 }

apps/files/lib/Command/Object/Get.php

@@ -31,10 +31,9 @@ use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class Get extends Command {
-	private ObjectUtil $objectUtils;
-
-	public function __construct(ObjectUtil $objectUtils) {
-		$this->objectUtils = $objectUtils;
+	public function __construct(
+		private ObjectUtil $objectUtils,
+	) {
 		parent::__construct();
 	}
 
@@ -52,29 +51,29 @@ class Get extends Command {
 		$outputName = $input->getArgument('output');
 		$objectStore = $this->objectUtils->getObjectStore($input->getOption("bucket"), $output);
 		if (!$objectStore) {
-			return 1;
+			return self::FAILURE;
 		}
 
 		if (!$objectStore->objectExists($object)) {
 			$output->writeln("<error>Object $object does not exist</error>");
-			return 1;
-		} else {
-			try {
-				$source = $objectStore->readObject($object);
-			} catch (\Exception $e) {
-				$msg = $e->getMessage();
-				$output->writeln("<error>Failed to read $object from object store: $msg</error>");
-				return 1;
-			}
-			$target = $outputName === '-' ? STDOUT : fopen($outputName, 'w');
-			if (!$target) {
-				$output->writeln("<error>Failed to open $outputName for writing</error>");
-				return 1;
-			}
-
-			stream_copy_to_stream($source, $target);
-			return 0;
+			return self::FAILURE;
 		}
+
+		try {
+			$source = $objectStore->readObject($object);
+		} catch (\Exception $e) {
+			$msg = $e->getMessage();
+			$output->writeln("<error>Failed to read $object from object store: $msg</error>");
+			return self::FAILURE;
+		}
+		$target = $outputName === '-' ? STDOUT : fopen($outputName, 'w');
+		if (!$target) {
+			$output->writeln("<error>Failed to open $outputName for writing</error>");
+			return self::FAILURE;
+		}
+
+		stream_copy_to_stream($source, $target);
+		return self::SUCCESS;
 	}
 
 }

apps/files/lib/Command/Object/ObjectUtil.php

@@ -30,12 +30,10 @@ use OCP\IDBConnection;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class ObjectUtil {
-	private IConfig $config;
-	private IDBConnection $connection;
-
-	public function __construct(IConfig $config, IDBConnection $connection) {
-		$this->config = $config;
-		$this->connection = $connection;
+	public function __construct(
+		private IConfig $config,
+		private IDBConnection $connection,
+	) {
 	}
 
 	private function getObjectStoreConfig(): ?array {
@@ -50,9 +48,9 @@ class ObjectUtil {
 				$config['multibucket'] = false;
 			}
 			return $config;
-		} else {
-			return null;
 		}
+
+		return null;
 	}
 
 	public function getObjectStore(?string $bucket, OutputInterface $output): ?IObjectStore {
@@ -91,20 +89,21 @@ class ObjectUtil {
 	 * Check if an object is referenced in the database
 	 */
 	public function objectExistsInDb(string $object): int|false {
-		if (str_starts_with($object, 'urn:oid:')) {
-			$fileId = (int)substr($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 $fileId;
-			} else {
-				return false;
-			}
-		} else {
+		if (!str_starts_with($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;
 	}
 }

apps/files/lib/Command/Object/Put.php

@@ -33,12 +33,10 @@ use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Question\ConfirmationQuestion;
 
 class Put extends Command {
-	private ObjectUtil $objectUtils;
-	private IMimeTypeDetector $mimeTypeDetector;
-
-	public function __construct(ObjectUtil $objectUtils, IMimeTypeDetector $mimeTypeDetector) {
-		$this->objectUtils = $objectUtils;
-		$this->mimeTypeDetector = $mimeTypeDetector;
+	public function __construct(
+		private ObjectUtil $objectUtils,
+		private IMimeTypeDetector $mimeTypeDetector,
+	) {
 		parent::__construct();
 	}
 
@@ -75,10 +73,10 @@ class Put extends Command {
 		$source = $inputName === '-' ? STDIN : fopen($inputName, 'r');
 		if (!$source) {
 			$output->writeln("<error>Failed to open $inputName</error>");
-			return 1;
+			return self::FAILURE;
 		}
 		$objectStore->writeObject($object, $source, $this->mimeTypeDetector->detectPath($inputName));
-		return 0;
+		return self::SUCCESS;
 	}
 
 }

apps/files/lib/Command/Put.php

@@ -34,12 +34,10 @@ use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class Put extends Command {
-	private FileUtils $fileUtils;
-	private IRootFolder $rootFolder;
-
-	public function __construct(FileUtils $fileUtils, IRootFolder $rootFolder) {
-		$this->fileUtils = $fileUtils;
-		$this->rootFolder = $rootFolder;
+	public function __construct(
+		private FileUtils $fileUtils,
+		private IRootFolder $rootFolder,
+	) {
 		parent::__construct();
 	}
 
@@ -58,29 +56,28 @@ class Put extends Command {
 
 		if ($node instanceof Folder) {
 			$output->writeln("<error>$fileOutput is a folder</error>");
-			return 1;
+			return self::FAILURE;
 		}
 		if (!$node and is_numeric($fileOutput)) {
 			$output->writeln("<error>$fileOutput not found</error>");
-			return 1;
+			return self::FAILURE;
 		}
 
 		$source = ($inputName === null || $inputName === '-') ? STDIN : fopen($inputName, 'r');
 		if (!$source) {
 			$output->writeln("<error>Failed to open $inputName</error>");
-			return 1;
+			return self::FAILURE;
 		}
 		if ($node instanceof File) {
 			$target = $node->fopen('w');
 			if (!$target) {
 				$output->writeln("<error>Failed to open $fileOutput</error>");
-				return 1;
+				return self::FAILURE;
 			}
 			stream_copy_to_stream($source, $target);
 		} else {
 			$this->rootFolder->newFile($fileOutput, $source);
 		}
-		return 0;
+		return self::SUCCESS;
 	}
-
 }

apps/files/lib/Command/RepairTree.php

@@ -33,17 +33,13 @@ use Symfony\Component\Console\Output\OutputInterface;
 class RepairTree extends Command {
 	public const CHUNK_SIZE = 200;
 
-	/**
-	 * @var IDBConnection
-	 */
-	protected $connection;
-
-	public function __construct(IDBConnection $connection) {
-		$this->connection = $connection;
+	public function __construct(
+		protected IDBConnection $connection,
+	) {
 		parent::__construct();
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 			->setName('files:repair-tree')
 			->setDescription('Try and repair malformed filesystem tree structures')
@@ -90,7 +86,7 @@ class RepairTree extends Command {
 			$this->connection->commit();
 		}
 
-		return 0;
+		return self::SUCCESS;
 	}
 
 	private function getFileId(int $storage, string $path) {
@@ -102,7 +98,7 @@ class RepairTree extends Command {
 		return $query->execute()->fetch(\PDO::FETCH_COLUMN);
 	}
 
-	private function deleteById(int $fileId) {
+	private function deleteById(int $fileId): void {
 		$query = $this->connection->getQueryBuilder();
 		$query->delete('filecache')
 			->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId)));

apps/files/lib/Command/Scan.php

@@ -54,26 +54,20 @@ use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class Scan extends Base {
-	private IUserManager $userManager;
 	protected float $execTime = 0;
 	protected int $foldersCounter = 0;
 	protected int $filesCounter = 0;
 	protected int $errorsCounter = 0;
-	private IRootFolder $root;
-	private MetadataManager $metadataManager;
 
 	public function __construct(
-		IUserManager $userManager,
-		IRootFolder $rootFolder,
-		MetadataManager $metadataManager
+		private IUserManager $userManager,
+		private IRootFolder $rootFolder,
+		private MetadataManager $metadataManager
 	) {
-		$this->userManager = $userManager;
 		parent::__construct();
-		$this->root = $rootFolder;
-		$this->metadataManager = $metadataManager;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		parent::configure();
 
 		$this
@@ -134,7 +128,7 @@ class Scan extends Base {
 			++$this->filesCounter;
 			$this->abortIfInterrupted();
 			if ($scanMetadata) {
-				$node = $this->root->get($path);
+				$node = $this->rootFolder->get($path);
 				if ($node instanceof File) {
 					$this->metadataManager->generateMetadata($node, false);
 				}
@@ -181,7 +175,7 @@ class Scan extends Base {
 		}
 	}
 
-	public function filterHomeMount(IMountPoint $mountPoint) {
+	public function filterHomeMount(IMountPoint $mountPoint): bool {
 		// any mountpoint inside '/$user/files/'
 		return substr_count($mountPoint->getMountPoint(), '/') <= 3;
 	}
@@ -202,7 +196,7 @@ class Scan extends Base {
 		$users_total = count($users);
 		if ($users_total === 0) {
 			$output->writeln('<error>Please specify the user id to scan, --all to scan for all users or --path=...</error>');
-			return 1;
+			return self::FAILURE;
 		}
 
 		$this->initTools($output);
@@ -212,7 +206,7 @@ class Scan extends Base {
 			if (is_object($user)) {
 				$user = $user->getUID();
 			}
-			$path = $inputPath ? $inputPath : '/' . $user;
+			$path = $inputPath ?: '/' . $user;
 			++$user_count;
 			if ($this->userManager->userExists($user)) {
 				$output->writeln("Starting scan for user $user_count out of $users_total ($user)");
@@ -231,13 +225,13 @@ class Scan extends Base {
 		}
 
 		$this->presentStats($output);
-		return 0;
+		return self::SUCCESS;
 	}
 
 	/**
 	 * Initialises some useful tools for the Command
 	 */
-	protected function initTools(OutputInterface $output) {
+	protected function initTools(OutputInterface $output): void {
 		// Start the timer
 		$this->execTime = -microtime(true);
 		// Convert PHP errors to exceptions
@@ -270,10 +264,7 @@ class Scan extends Base {
 		return true;
 	}
 
-	/**
-	 * @param OutputInterface $output
-	 */
-	protected function presentStats(OutputInterface $output) {
+	protected function presentStats(OutputInterface $output): void {
 		// Stop the timer
 		$this->execTime += microtime(true);
 
@@ -299,11 +290,9 @@ class Scan extends Base {
 
 
 	/**
-	 * Formats microtime into a human readable format
-	 *
-	 * @return string
+	 * Formats microtime into a human-readable format
 	 */
-	protected function formatExecTime() {
+	protected function formatExecTime(): string {
 		$secs = (int)round($this->execTime);
 		# convert seconds into HH:MM:SS form
 		return sprintf('%02d:%02d:%02d', (int)($secs / 3600), ((int)($secs / 60) % 60), $secs % 60);

apps/files/lib/Command/ScanAppData.php

@@ -46,26 +46,20 @@ use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class ScanAppData extends Base {
+	protected float $execTime = 0;
 
-	/** @var IRootFolder */
-	protected $root;
-	/** @var IConfig */
-	protected $config;
-	/** @var float */
-	protected $execTime = 0;
-	/** @var int */
-	protected $foldersCounter = 0;
-	/** @var int */
-	protected $filesCounter = 0;
+	protected int $foldersCounter = 0;
 
-	public function __construct(IRootFolder $rootFolder, IConfig $config) {
+	protected int $filesCounter = 0;
+
+	public function __construct(
+		protected IRootFolder $rootFolder,
+		protected IConfig $config,
+	) {
 		parent::__construct();
-
-		$this->root = $rootFolder;
-		$this->config = $config;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		parent::configure();
 
 		$this
@@ -80,7 +74,7 @@ class ScanAppData extends Base {
 			$appData = $this->getAppDataFolder();
 		} catch (NotFoundException $e) {
 			$output->writeln('<error>NoAppData folder found</error>');
-			return 1;
+			return self::FAILURE;
 		}
 
 		if ($folder !== '') {
@@ -88,7 +82,7 @@ class ScanAppData extends Base {
 				$appData = $appData->get($folder);
 			} catch (NotFoundException $e) {
 				$output->writeln('<error>Could not find folder: ' . $folder . '</error>');
-				return 1;
+				return self::FAILURE;
 			}
 		}
 
@@ -126,21 +120,21 @@ class ScanAppData extends Base {
 		} catch (ForbiddenException $e) {
 			$output->writeln('<error>Storage not writable</error>');
 			$output->writeln('<info>Make sure you\'re running the scan command only as the user the web server runs as</info>');
-			return 1;
+			return self::FAILURE;
 		} catch (InterruptedException $e) {
 			# exit the function if ctrl-c has been pressed
 			$output->writeln('<info>Interrupted by user</info>');
-			return 1;
+			return self::FAILURE;
 		} catch (NotFoundException $e) {
 			$output->writeln('<error>Path not found: ' . $e->getMessage() . '</error>');
-			return 1;
+			return self::FAILURE;
 		} catch (\Exception $e) {
 			$output->writeln('<error>Exception during scan: ' . $e->getMessage() . '</error>');
 			$output->writeln('<error>' . $e->getTraceAsString() . '</error>');
-			return 1;
+			return self::FAILURE;
 		}
 
-		return 0;
+		return self::SUCCESS;
 	}
 
 
@@ -167,7 +161,7 @@ class ScanAppData extends Base {
 	/**
 	 * Initialises some useful tools for the Command
 	 */
-	protected function initTools() {
+	protected function initTools(): void {
 		// Start the timer
 		$this->execTime = -microtime(true);
 		// Convert PHP errors to exceptions
@@ -186,7 +180,7 @@ class ScanAppData extends Base {
 	 *
 	 * @throws \ErrorException
 	 */
-	public function exceptionErrorHandler($severity, $message, $file, $line) {
+	public function exceptionErrorHandler($severity, $message, $file, $line): void {
 		if (!(error_reporting() & $severity)) {
 			// This error code is not included in error_reporting
 			return;
@@ -194,10 +188,7 @@ class ScanAppData extends Base {
 		throw new \ErrorException($message, 0, $severity, $file, $line);
 	}
 
-	/**
-	 * @param OutputInterface $output
-	 */
-	protected function presentStats(OutputInterface $output) {
+	protected function presentStats(OutputInterface $output): void {
 		// Stop the timer
 		$this->execTime += microtime(true);
 
@@ -213,9 +204,8 @@ class ScanAppData extends Base {
 	 *
 	 * @param string[] $headers
 	 * @param string[] $rows
-	 * @param OutputInterface $output
 	 */
-	protected function showSummary($headers, $rows, OutputInterface $output) {
+	protected function showSummary($headers, $rows, OutputInterface $output): void {
 		$niceDate = $this->formatExecTime();
 		if (!$rows) {
 			$rows = [
@@ -233,11 +223,9 @@ class ScanAppData extends Base {
 
 
 	/**
-	 * Formats microtime into a human readable format
-	 *
-	 * @return string
+	 * Formats microtime into a human-readable format
 	 */
-	protected function formatExecTime() {
+	protected function formatExecTime(): string {
 		$secs = round($this->execTime);
 		# convert seconds into HH:MM:SS form
 		return sprintf('%02d:%02d:%02d', (int)($secs / 3600), ((int)($secs / 60) % 60), (int)$secs % 60);
@@ -273,6 +261,6 @@ class ScanAppData extends Base {
 			throw new NotFoundException();
 		}
 
-		return $this->root->get('appdata_'.$instanceId);
+		return $this->rootFolder->get('appdata_'.$instanceId);
 	}
 }

apps/files/lib/Command/TransferOwnership.php

@@ -46,26 +46,15 @@ use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class TransferOwnership extends Command {
-
-	/** @var IUserManager */
-	private $userManager;
-
-	/** @var OwnershipTransferService */
-	private $transferService;
-
-	/** @var IConfig */
-	private $config;
-
-	public function __construct(IUserManager $userManager,
-								OwnershipTransferService $transferService,
-								IConfig $config) {
+	public function __construct(
+		private IUserManager $userManager,
+		private OwnershipTransferService $transferService,
+		private IConfig $config,
+	) {
 		parent::__construct();
-		$this->userManager = $userManager;
-		$this->transferService = $transferService;
-		$this->config = $config;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 			->setName('files:transfer-ownership')
 			->setDescription('All files and folders are moved to another user - outgoing shares and incoming user file shares (optionally) are moved as well.')
@@ -107,7 +96,7 @@ class TransferOwnership extends Command {
 
 		if ($input->getArgument(('source-user')) === $input->getArgument('destination-user')) {
 			$output->writeln("<error>Ownership can't be transferred when Source and Destination users are the same user. Please check your input.</error>");
-			return 1;
+			return self::FAILURE;
 		}
 
 		$sourceUserObject = $this->userManager->get($input->getArgument('source-user'));
@@ -115,12 +104,12 @@ class TransferOwnership extends Command {
 
 		if (!$sourceUserObject instanceof IUser) {
 			$output->writeln("<error>Unknown source user " . $input->getArgument('source-user') . "</error>");
-			return 1;
+			return self::FAILURE;
 		}
 
 		if (!$destinationUserObject instanceof IUser) {
 			$output->writeln("<error>Unknown destination user " . $input->getArgument('destination-user') . "</error>");
-			return 1;
+			return self::FAILURE;
 		}
 
 		try {
@@ -137,13 +126,12 @@ class TransferOwnership extends Command {
 					$includeIncoming = $this->config->getSystemValue('transferIncomingShares', false);
 					if (gettype($includeIncoming) !== 'boolean') {
 						$output->writeln("<error> config.php: 'transfer-incoming-shares': wrong usage. Transfer aborted.</error>");
-						return 1;
+						return self::FAILURE;
 					}
 					break;
 				default:
 					$output->writeln("<error>Option --transfer-incoming-shares: wrong usage. Transfer aborted.</error>");
-					return 1;
-					break;
+					return self::FAILURE;
 			}
 
 			$this->transferService->transfer(
@@ -157,9 +145,9 @@ class TransferOwnership extends Command {
 			);
 		} catch (TransferOwnershipException $e) {
 			$output->writeln("<error>" . $e->getMessage() . "</error>");
-			return $e->getCode() !== 0 ? $e->getCode() : 1;
+			return $e->getCode() !== 0 ? $e->getCode() : self::FAILURE;
 		}
 
-		return 0;
+		return self::SUCCESS;
 	}
 }