Expose user language through DAV

Introduces the '{http://nextcloud.com/ns}language' prop that gives the
user's language

Closes #28449

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

apps/dav/appinfo/v1/caldav.php

@@ -52,6 +52,7 @@ $principalBackend = new Principal(
 	\OC::$server->query(\OCA\DAV\CalDAV\Proxy\ProxyMapper::class),
 	\OC::$server->get(KnownUserService::class),
 	\OC::$server->getConfig(),
+	\OC::$server->getL10NFactory(),
 	'principals/'
 );
 $db = \OC::$server->getDatabaseConnection();

apps/dav/appinfo/v1/carddav.php

@@ -55,6 +55,7 @@ $principalBackend = new Principal(
 	\OC::$server->query(\OCA\DAV\CalDAV\Proxy\ProxyMapper::class),
 	\OC::$server->get(KnownUserService::class),
 	\OC::$server->getConfig(),
+	\OC::$server->getL10NFactory(),
 	'principals/'
 );
 $db = \OC::$server->getDatabaseConnection();

apps/dav/lib/Command/CreateCalendar.php

@@ -87,7 +87,8 @@ class CreateCalendar extends Command {
 			\OC::$server->getAppManager(),
 			\OC::$server->query(ProxyMapper::class),
 			\OC::$server->get(KnownUserService::class),
-			\OC::$server->getConfig()
+			\OC::$server->getConfig(),
+			\OC::$server->getL10NFactory(),
 		);
 		$random = \OC::$server->getSecureRandom();
 		$logger = \OC::$server->getLogger();

apps/dav/lib/Connector/Sabre/Principal.php

@@ -50,6 +50,7 @@ use OCP\IGroupManager;
 use OCP\IUser;
 use OCP\IUserManager;
 use OCP\IUserSession;
+use OCP\L10N\IFactory;
 use OCP\Share\IManager as IShareManager;
 use Sabre\DAV\Exception;
 use Sabre\DAV\PropPatch;
@@ -89,6 +90,8 @@ class Principal implements BackendInterface {
 
 	/** @var IConfig */
 	private $config;
+	/** @var IFactory */
+	private $languageFactory;
 
 	public function __construct(IUserManager $userManager,
 								IGroupManager $groupManager,
@@ -98,6 +101,7 @@ class Principal implements BackendInterface {
 								ProxyMapper $proxyMapper,
 								KnownUserService $knownUserService,
 								IConfig $config,
+								IFactory $languageFactory,
 								string $principalPrefix = 'principals/users/') {
 		$this->userManager = $userManager;
 		$this->groupManager = $groupManager;
@@ -109,6 +113,7 @@ class Principal implements BackendInterface {
 		$this->proxyMapper = $proxyMapper;
 		$this->knownUserService = $knownUserService;
 		$this->config = $config;
+		$this->languageFactory = $languageFactory;
 	}
 
 	use PrincipalProxyTrait {
@@ -508,6 +513,7 @@ class Principal implements BackendInterface {
 			'uri' => $this->principalPrefix . '/' . $userId,
 			'{DAV:}displayname' => is_null($displayName) ? $userId : $displayName,
 			'{urn:ietf:params:xml:ns:caldav}calendar-user-type' => 'INDIVIDUAL',
+			'{http://nextcloud.com/ns}language' => $this->languageFactory->getUserLanguage($user),
 		];
 
 		$email = $user->getEMailAddress();

apps/dav/lib/RootCollection.php

@@ -73,7 +73,8 @@ class RootCollection extends SimpleCollection {
 			\OC::$server->getAppManager(),
 			$proxyMapper,
 			\OC::$server->get(KnownUserService::class),
-			\OC::$server->getConfig()
+			\OC::$server->getConfig(),
+			\OC::$server->getL10NFactory()
 		);
 		$groupPrincipalBackend = new GroupPrincipalBackend($groupManager, $userSession, $shareManager, $config);
 		$calendarResourcePrincipalBackend = new ResourcePrincipalBackend($db, $userSession, $groupManager, $logger, $proxyMapper);

apps/dav/tests/unit/CalDAV/AbstractCalDavBackend.php

@@ -37,6 +37,7 @@ use OCP\IGroupManager;
 use OCP\ILogger;
 use OCP\IUserManager;
 use OCP\IUserSession;
+use OCP\L10N\IFactory;
 use OCP\Security\ISecureRandom;
 use OCP\Share\IManager as ShareManager;
 use Sabre\CalDAV\Xml\Property\SupportedCalendarComponentSet;
@@ -94,6 +95,7 @@ abstract class AbstractCalDavBackend extends TestCase {
 				$this->createMock(ProxyMapper::class),
 				$this->createMock(KnownUserService::class),
 				$this->createMock(IConfig::class),
+				$this->createMock(IFactory::class)
 			])
 			->setMethods(['getPrincipalByPath', 'getGroupMembership'])
 			->getMock();

apps/dav/tests/unit/CardDAV/CardDavBackendTest.php

@@ -46,6 +46,7 @@ use OCP\IGroupManager;
 use OCP\IL10N;
 use OCP\IUserManager;
 use OCP\IUserSession;
+use OCP\L10N\IFactory;
 use OCP\Share\IManager as ShareManager;
 use Sabre\DAV\Exception\BadRequest;
 use Sabre\DAV\PropPatch;
@@ -141,6 +142,7 @@ class CardDavBackendTest extends TestCase {
 				$this->createMock(ProxyMapper::class),
 				$this->createMock(KnownUserService::class),
 				$this->createMock(IConfig::class),
+				$this->createMock(IFactory::class)
 			])
 			->setMethods(['getPrincipalByPath', 'getGroupMembership'])
 			->getMock();

apps/dav/tests/unit/Connector/Sabre/PrincipalTest.php

@@ -40,6 +40,7 @@ use OCP\IGroupManager;
 use OCP\IUser;
 use OCP\IUserManager;
 use OCP\IUserSession;
+use OCP\L10N\IFactory;
 use OCP\Share\IManager;
 use PHPUnit\Framework\MockObject\MockObject;
 use Sabre\DAV\PropPatch;
@@ -72,6 +73,8 @@ class PrincipalTest extends TestCase {
 	private $knownUserService;
 	/** @var IConfig | \PHPUnit\Framework\MockObject\MockObject */
 	private $config;
+	/** @var IFactory|MockObject */
+	private $languageFactory;
 
 	protected function setUp(): void {
 		$this->userManager = $this->createMock(IUserManager::class);
@@ -82,6 +85,7 @@ class PrincipalTest extends TestCase {
 		$this->proxyMapper = $this->createMock(ProxyMapper::class);
 		$this->knownUserService = $this->createMock(KnownUserService::class);
 		$this->config = $this->createMock(IConfig::class);
+		$this->languageFactory = $this->createMock(IFactory::class);
 
 		$this->connector = new \OCA\DAV\Connector\Sabre\Principal(
 			$this->userManager,
@@ -91,7 +95,8 @@ class PrincipalTest extends TestCase {
 			$this->appManager,
 			$this->proxyMapper,
 			$this->knownUserService,
-			$this->config
+			$this->config,
+			$this->languageFactory
 		);
 		parent::setUp();
 	}
@@ -130,16 +135,24 @@ class PrincipalTest extends TestCase {
 			->with('')
 			->willReturn([$fooUser, $barUser]);
 
+		$this->languageFactory
+			->expects($this->exactly(2))
+			->method('getUserLanguage')
+			->withConsecutive([$fooUser], [$barUser])
+			->willReturnOnConsecutiveCalls('de', 'en');
+
 		$expectedResponse = [
 			0 => [
 				'uri' => 'principals/users/foo',
 				'{DAV:}displayname' => 'Dr. Foo-Bar',
 				'{urn:ietf:params:xml:ns:caldav}calendar-user-type' => 'INDIVIDUAL',
+				'{http://nextcloud.com/ns}language' => 'de',
 			],
 			1 => [
 				'uri' => 'principals/users/bar',
 				'{DAV:}displayname' => 'bar',
 				'{urn:ietf:params:xml:ns:caldav}calendar-user-type' => 'INDIVIDUAL',
+				'{http://nextcloud.com/ns}language' => 'en',
 				'{http://sabredav.org/ns}email-address' => 'bar@nextcloud.com',
 			]
 		];
@@ -170,10 +183,17 @@ class PrincipalTest extends TestCase {
 			->with('foo')
 			->willReturn($fooUser);
 
+		$this->languageFactory
+			->expects($this->once())
+			->method('getUserLanguage')
+			->with($fooUser)
+			->willReturn('de');
+
 		$expectedResponse = [
 			'uri' => 'principals/users/foo',
 			'{DAV:}displayname' => 'foo',
 			'{urn:ietf:params:xml:ns:caldav}calendar-user-type' => 'INDIVIDUAL',
+			'{http://nextcloud.com/ns}language' => 'de'
 		];
 		$response = $this->connector->getPrincipalByPath('principals/users/foo');
 		$this->assertSame($expectedResponse, $response);
@@ -195,10 +215,17 @@ class PrincipalTest extends TestCase {
 			->with('foo')
 			->willReturn($fooUser);
 
+		$this->languageFactory
+			->expects($this->once())
+			->method('getUserLanguage')
+			->with($fooUser)
+			->willReturn('de');
+
 		$expectedResponse = [
 			'uri' => 'principals/users/foo',
 			'{DAV:}displayname' => 'foo',
 			'{urn:ietf:params:xml:ns:caldav}calendar-user-type' => 'INDIVIDUAL',
+			'{http://nextcloud.com/ns}language' => 'de',
 			'{http://sabredav.org/ns}email-address' => 'foo@nextcloud.com',
 		];
 		$response = $this->connector->getPrincipalByPath('principals/users/foo');

apps/files_versions/lib/AppInfo/Application.php

@@ -48,6 +48,7 @@ use OCP\IGroupManager;
 use OCP\IServerContainer;
 use OCP\IUserManager;
 use OCP\IUserSession;
+use OCP\L10N\IFactory;
 use OCP\Share\IManager as IShareManager;
 use Psr\Container\ContainerInterface;
 use Psr\Log\LoggerInterface;
@@ -79,7 +80,8 @@ class Application extends App implements IBootstrap {
 				$server->get(IAppManager::class),
 				$server->get(ProxyMapper::class),
 				$server->get(KnownUserService::class),
-				$server->get(IConfig::class)
+				$server->get(IConfig::class),
+				$server->get(IFactory::class),
 			);
 		});