diff --git a/apps/dav/lib/Command/CreateAddressBook.php b/apps/dav/lib/Command/CreateAddressBook.php
index 3d56d95868dd1..9dfc539a25d89 100644
--- a/apps/dav/lib/Command/CreateAddressBook.php
+++ b/apps/dav/lib/Command/CreateAddressBook.php
@@ -32,26 +32,14 @@
 use Symfony\Component\Console\Output\OutputInterface;
 
 class CreateAddressBook extends Command {
-
-	/** @var IUserManager */
-	private $userManager;
-
-	/** @var CardDavBackend */
-	private $cardDavBackend;
-
-	/**
-	 * @param IUserManager $userManager
-	 * @param CardDavBackend $cardDavBackend
-	 */
-	public function __construct(IUserManager $userManager,
-						 CardDavBackend $cardDavBackend
+	public function __construct(
+		private IUserManager $userManager,
+		private CardDavBackend $cardDavBackend,
 	) {
 		parent::__construct();
-		$this->userManager = $userManager;
-		$this->cardDavBackend = $cardDavBackend;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 				->setName('dav:create-addressbook')
 				->setDescription('Create a dav addressbook')
@@ -71,6 +59,6 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
 		$name = $input->getArgument('name');
 		$this->cardDavBackend->createAddressBook("principals/users/$user", $name, []);
-		return 0;
+		return self::SUCCESS;
 	}
 }
diff --git a/apps/dav/lib/Command/CreateCalendar.php b/apps/dav/lib/Command/CreateCalendar.php
index 08f937dff9d16..d571f11317725 100644
--- a/apps/dav/lib/Command/CreateCalendar.php
+++ b/apps/dav/lib/Command/CreateCalendar.php
@@ -42,29 +42,15 @@
 use Symfony\Component\Console\Output\OutputInterface;
 
 class CreateCalendar extends Command {
-
-	/** @var IUserManager */
-	protected $userManager;
-
-	/** @var IGroupManager $groupManager */
-	private $groupManager;
-
-	/** @var \OCP\IDBConnection */
-	protected $dbConnection;
-
-	/**
-	 * @param IUserManager $userManager
-	 * @param IGroupManager $groupManager
-	 * @param IDBConnection $dbConnection
-	 */
-	public function __construct(IUserManager $userManager, IGroupManager $groupManager, IDBConnection $dbConnection) {
+	public function __construct(
+		protected IUserManager $userManager,
+		private IGroupManager $groupManager,
+		protected IDBConnection $dbConnection,
+	) {
 		parent::__construct();
-		$this->userManager = $userManager;
-		$this->groupManager = $groupManager;
-		$this->dbConnection = $dbConnection;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 			->setName('dav:create-calendar')
 			->setDescription('Create a dav calendar')
@@ -110,6 +96,6 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 			$config
 		);
 		$caldav->createCalendar("principals/users/$user", $name, []);
-		return 0;
+		return self::SUCCESS;
 	}
 }
diff --git a/apps/dav/lib/Command/DeleteCalendar.php b/apps/dav/lib/Command/DeleteCalendar.php
index dd5f11c740f3a..f9caa142757a5 100644
--- a/apps/dav/lib/Command/DeleteCalendar.php
+++ b/apps/dav/lib/Command/DeleteCalendar.php
@@ -38,40 +38,14 @@
 use Symfony\Component\Console\Output\OutputInterface;
 
 class DeleteCalendar extends Command {
-	/** @var CalDavBackend */
-	private $calDav;
-
-	/** @var IConfig */
-	private $config;
-
-	/** @var IL10N */
-	private $l10n;
-
-	/** @var IUserManager */
-	private $userManager;
-
-	/** @var LoggerInterface */
-	private $logger;
-
-	/**
-	 * @param CalDavBackend $calDav
-	 * @param IConfig $config
-	 * @param IL10N $l10n
-	 * @param IUserManager $userManager
-	 */
 	public function __construct(
-		CalDavBackend $calDav,
-		IConfig $config,
-		IL10N $l10n,
-		IUserManager $userManager,
-		LoggerInterface $logger
+		private CalDavBackend $calDav,
+		private IConfig $config,
+		private IL10N $l10n,
+		private IUserManager $userManager,
+		private LoggerInterface $logger,
 	) {
 		parent::__construct();
-		$this->calDav = $calDav;
-		$this->config = $config;
-		$this->l10n = $l10n;
-		$this->userManager = $userManager;
-		$this->logger = $logger;
 	}
 
 	protected function configure(): void {
@@ -140,6 +114,6 @@ protected function execute(
 
 		$calendar->delete();
 
-		return 0;
+		return self::SUCCESS;
 	}
 }
diff --git a/apps/dav/lib/Command/ListCalendars.php b/apps/dav/lib/Command/ListCalendars.php
index 35581c2d4b21e..901d2822656d9 100644
--- a/apps/dav/lib/Command/ListCalendars.php
+++ b/apps/dav/lib/Command/ListCalendars.php
@@ -35,24 +35,14 @@
 use Symfony\Component\Console\Output\OutputInterface;
 
 class ListCalendars extends Command {
-
-	/** @var IUserManager */
-	protected $userManager;
-
-	/** @var CalDavBackend */
-	private $caldav;
-
-	/**
-	 * @param IUserManager $userManager
-	 * @param CalDavBackend $caldav
-	 */
-	public function __construct(IUserManager $userManager, CalDavBackend $caldav) {
+	public function __construct(
+		protected IUserManager $userManager,
+		private CalDavBackend $caldav,
+	) {
 		parent::__construct();
-		$this->userManager = $userManager;
-		$this->caldav = $caldav;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 			->setName('dav:list-calendars')
 			->setDescription('List all calendars of a user')
@@ -100,6 +90,6 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 		} else {
 			$output->writeln("<info>User <$user> has no calendars</info>");
 		}
-		return 0;
+		return self::SUCCESS;
 	}
 }
diff --git a/apps/dav/lib/Command/MoveCalendar.php b/apps/dav/lib/Command/MoveCalendar.php
index 9272b20b10dc3..a3045797ff45f 100644
--- a/apps/dav/lib/Command/MoveCalendar.php
+++ b/apps/dav/lib/Command/MoveCalendar.php
@@ -42,37 +42,23 @@
 use Symfony\Component\Console\Style\SymfonyStyle;
 
 class MoveCalendar extends Command {
-	private IUserManager $userManager;
-	private IGroupManager $groupManager;
-	private IShareManager $shareManager;
-	private IConfig $config;
-	private IL10N $l10n;
 	private ?SymfonyStyle $io = null;
-	private CalDavBackend $calDav;
-	private LoggerInterface $logger;
 
 	public const URI_USERS = 'principals/users/';
 
 	public function __construct(
-		IUserManager $userManager,
-		IGroupManager $groupManager,
-		IShareManager $shareManager,
-		IConfig $config,
-		IL10N $l10n,
-		CalDavBackend $calDav,
-		LoggerInterface $logger
+		private IUserManager $userManager,
+		private IGroupManager $groupManager,
+		private IShareManager $shareManager,
+		private IConfig $config,
+		private IL10N $l10n,
+		private CalDavBackend $calDav,
+		private LoggerInterface $logger,
 	) {
 		parent::__construct();
-		$this->userManager = $userManager;
-		$this->groupManager = $groupManager;
-		$this->shareManager = $shareManager;
-		$this->config = $config;
-		$this->l10n = $l10n;
-		$this->calDav = $calDav;
-		$this->logger = $logger;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 			->setName('dav:move-calendar')
 			->setDescription('Move a calendar from an user to another')
@@ -140,15 +126,11 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 		$this->calDav->moveCalendar($name, self::URI_USERS . $userOrigin, self::URI_USERS . $userDestination, $newName);
 
 		$this->io->success("Calendar <$name> was moved from user <$userOrigin> to <$userDestination>" . ($newName ? " as <$newName>" : ''));
-		return 0;
+		return self::SUCCESS;
 	}
 
 	/**
 	 * Check if the calendar exists for user
-	 *
-	 * @param string $userDestination
-	 * @param string $name
-	 * @return bool
 	 */
 	protected function calendarExists(string $userDestination, string $name): bool {
 		return null !== $this->calDav->getCalendarByUri(self::URI_USERS . $userDestination, $name);
@@ -156,11 +138,7 @@ protected function calendarExists(string $userDestination, string $name): bool {
 
 	/**
 	 * Try to find a suitable new calendar name that
-	 * doesn't exists for the provided user
-	 *
-	 * @param string $userDestination
-	 * @param string $name
-	 * @return string
+	 * doesn't exist for the provided user
 	 */
 	protected function getNewCalendarName(string $userDestination, string $name): string {
 		$increment = 1;
@@ -182,10 +160,6 @@ protected function getNewCalendarName(string $userDestination, string $name): st
 	/**
 	 * Check that moving the calendar won't break shares
 	 *
-	 * @param array $calendar
-	 * @param string $userOrigin
-	 * @param string $userDestination
-	 * @param bool $force
 	 * @return bool had any shares or not
 	 * @throws \InvalidArgumentException
 	 */
diff --git a/apps/dav/lib/Command/RemoveInvalidShares.php b/apps/dav/lib/Command/RemoveInvalidShares.php
index 4f9e4836a722f..e373dc1c67866 100644
--- a/apps/dav/lib/Command/RemoveInvalidShares.php
+++ b/apps/dav/lib/Command/RemoveInvalidShares.php
@@ -37,21 +37,14 @@
  * have no matching principal. Happened because of a bug in the calendar app.
  */
 class RemoveInvalidShares extends Command {
-
-	/** @var IDBConnection */
-	private $connection;
-	/** @var Principal */
-	private $principalBackend;
-
-	public function __construct(IDBConnection $connection,
-								Principal $principalBackend) {
+	public function __construct(
+		private IDBConnection $connection,
+		private Principal $principalBackend,
+	) {
 		parent::__construct();
-
-		$this->connection = $connection;
-		$this->principalBackend = $principalBackend;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 			->setName('dav:remove-invalid-shares')
 			->setDescription('Remove invalid dav shares');
@@ -72,13 +65,13 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 		}
 
 		$result->closeCursor();
-		return 0;
+		return self::SUCCESS;
 	}
 
 	/**
 	 * @param string $principaluri
 	 */
-	private function deleteSharesForPrincipal($principaluri) {
+	private function deleteSharesForPrincipal($principaluri): void {
 		$delete = $this->connection->getQueryBuilder();
 		$delete->delete('dav_shares')
 			->where($delete->expr()->eq('principaluri', $delete->createNamedParameter($principaluri)));
diff --git a/apps/dav/lib/Command/RetentionCleanupCommand.php b/apps/dav/lib/Command/RetentionCleanupCommand.php
index c9beabc974a1f..21eb96c235c35 100644
--- a/apps/dav/lib/Command/RetentionCleanupCommand.php
+++ b/apps/dav/lib/Command/RetentionCleanupCommand.php
@@ -31,18 +31,15 @@
 use Symfony\Component\Console\Output\OutputInterface;
 
 class RetentionCleanupCommand extends Command {
-	/** @var RetentionService */
-	private $service;
-
-	public function __construct(RetentionService $service) {
+	public function __construct(
+		private RetentionService $service,
+	) {
 		parent::__construct('dav:retention:clean-up');
-
-		$this->service = $service;
 	}
 
 	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$this->service->cleanUp();
 
-		return 0;
+		return self::SUCCESS;
 	}
 }
diff --git a/apps/dav/lib/Command/SendEventReminders.php b/apps/dav/lib/Command/SendEventReminders.php
index 697248d71a00a..16e3bb65a4664 100644
--- a/apps/dav/lib/Command/SendEventReminders.php
+++ b/apps/dav/lib/Command/SendEventReminders.php
@@ -35,22 +35,11 @@
  * @package OCA\DAV\Command
  */
 class SendEventReminders extends Command {
-
-	/** @var ReminderService */
-	protected $reminderService;
-
-	/** @var IConfig */
-	protected $config;
-
-	/**
-	 * @param ReminderService $reminderService
-	 * @param IConfig $config
-	 */
-	public function __construct(ReminderService $reminderService,
-								IConfig $config) {
+	public function __construct(
+		protected ReminderService $reminderService,
+		protected IConfig $config,
+	) {
 		parent::__construct();
-		$this->reminderService = $reminderService;
-		$this->config = $config;
 	}
 
 	/**
@@ -62,24 +51,20 @@ protected function configure():void {
 			->setDescription('Sends event reminders');
 	}
 
-	/**
-	 * @param InputInterface $input
-	 * @param OutputInterface $output
-	 */
 	protected function execute(InputInterface $input, OutputInterface $output): int {
 		if ($this->config->getAppValue('dav', 'sendEventReminders', 'yes') !== 'yes') {
 			$output->writeln('<error>Sending event reminders disabled!</error>');
 			$output->writeln('<info>Please run "php occ config:app:set dav sendEventReminders --value yes"');
-			return 1;
+			return self::FAILURE;
 		}
 
 		if ($this->config->getAppValue('dav', 'sendEventRemindersMode', 'backgroundjob') !== 'occ') {
 			$output->writeln('<error>Sending event reminders mode set to background-job!</error>');
 			$output->writeln('<info>Please run "php occ config:app:set dav sendEventRemindersMode --value occ"');
-			return 1;
+			return self::FAILURE;
 		}
 
 		$this->reminderService->processReminders();
-		return 0;
+		return self::SUCCESS;
 	}
 }
diff --git a/apps/dav/lib/Command/SyncBirthdayCalendar.php b/apps/dav/lib/Command/SyncBirthdayCalendar.php
index 6de5357bfde77..977fd5a067c08 100644
--- a/apps/dav/lib/Command/SyncBirthdayCalendar.php
+++ b/apps/dav/lib/Command/SyncBirthdayCalendar.php
@@ -35,30 +35,15 @@
 use Symfony\Component\Console\Output\OutputInterface;
 
 class SyncBirthdayCalendar extends Command {
-
-	/** @var BirthdayService */
-	private $birthdayService;
-
-	/** @var IConfig */
-	private $config;
-
-	/** @var IUserManager */
-	private $userManager;
-
-	/**
-	 * @param IUserManager $userManager
-	 * @param IConfig $config
-	 * @param BirthdayService $birthdayService
-	 */
-	public function __construct(IUserManager $userManager, IConfig $config,
-						 BirthdayService $birthdayService) {
+	public function __construct(
+		private IUserManager $userManager,
+		private IConfig $config,
+		private BirthdayService $birthdayService,
+	) {
 		parent::__construct();
-		$this->birthdayService = $birthdayService;
-		$this->config = $config;
-		$this->userManager = $userManager;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 			->setName('dav:sync-birthday-calendar')
 			->setDescription('Synchronizes the birthday calendar')
@@ -67,10 +52,6 @@ protected function configure() {
 				'User for whom the birthday calendar will be synchronized');
 	}
 
-	/**
-	 * @param InputInterface $input
-	 * @param OutputInterface $output
-	 */
 	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$this->verifyEnabled();
 
@@ -89,7 +70,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
 			$output->writeln("Start birthday calendar sync for $user");
 			$this->birthdayService->syncUser($user);
-			return 0;
+			return self::SUCCESS;
 		}
 		$output->writeln("Start birthday calendar sync for all users ...");
 		$p = new ProgressBar($output);
@@ -109,10 +90,10 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
 		$p->finish();
 		$output->writeln('');
-		return 0;
+		return self::SUCCESS;
 	}
 
-	protected function verifyEnabled() {
+	protected function verifyEnabled(): void {
 		$isEnabled = $this->config->getAppValue('dav', 'generateBirthdayCalendar', 'yes');
 
 		if ($isEnabled !== 'yes') {
diff --git a/apps/dav/lib/Command/SyncSystemAddressBook.php b/apps/dav/lib/Command/SyncSystemAddressBook.php
index 86a9ea26b73fe..b05e65249fffc 100644
--- a/apps/dav/lib/Command/SyncSystemAddressBook.php
+++ b/apps/dav/lib/Command/SyncSystemAddressBook.php
@@ -31,23 +31,19 @@
 use Symfony\Component\Console\Output\OutputInterface;
 
 class SyncSystemAddressBook extends Command {
-	/**
-	 * @param SyncService $syncService
-	 */
-	public function __construct(private SyncService $syncService, private IConfig $config) {
+	public function __construct(
+		private SyncService $syncService,
+		private IConfig $config,
+	) {
 		parent::__construct();
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		$this
 			->setName('dav:sync-system-addressbook')
 			->setDescription('Synchronizes users to the system addressbook');
 	}
 
-	/**
-	 * @param InputInterface $input
-	 * @param OutputInterface $output
-	 */
 	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$output->writeln('Syncing users ...');
 		$progress = new ProgressBar($output);
@@ -59,6 +55,6 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 		$progress->finish();
 		$output->writeln('');
 		$this->config->setAppValue('dav', 'needs_system_address_book_sync', 'no');
-		return 0;
+		return self::SUCCESS;
 	}
 }