chore/share provide get users

lib/AppInfo/Application.php

@@ -27,6 +27,7 @@
 use OCA\Deck\Event\CardUpdatedEvent;
 use OCA\Deck\Event\SessionClosedEvent;
 use OCA\Deck\Event\SessionCreatedEvent;
+use OCA\Deck\Listeners\AclCreatedRemovedListener;
 use OCA\Deck\Listeners\BeforeTemplateRenderedListener;
 use OCA\Deck\Listeners\CommentEventListener;
 use OCA\Deck\Listeners\FullTextSearchEventListener;
@@ -134,6 +135,10 @@ public function register(IRegistrationContext $context): void {
 
 		$context->registerEventListener(BeforeTemplateRenderedEvent::class, BeforeTemplateRenderedListener::class);
 
+		// Event listening to emit UserShareAccessUpdatedEvent for files_sharing
+		$context->registerEventListener(AclCreatedEvent::class, AclCreatedRemovedListener::class);
+		$context->registerEventListener(AclDeletedEvent::class, AclCreatedRemovedListener::class);
+
 		// Event listening for full text search indexing
 		$context->registerEventListener(CardCreatedEvent::class, FullTextSearchEventListener::class);
 		$context->registerEventListener(CardUpdatedEvent::class, FullTextSearchEventListener::class);

lib/Db/User.php

@@ -7,6 +7,7 @@
 
 namespace OCA\Deck\Db;
 
+use OCP\IUser;
 use OCP\IUserManager;
 
 class User extends RelationalObject {
@@ -18,19 +19,23 @@ public function __construct($uid, IUserManager $userManager) {
 		});
 	}
 
-	public function getObjectSerialization() {
+	public function getObjectSerialization(): array {
 		return [
 			'uid' => $this->getObject()->getUID(),
 			'displayname' => $this->getDisplayName(),
 			'type' => Acl::PERMISSION_TYPE_USER
 		];
 	}
 
-	public function getUID() {
+	public function getUID(): string {
 		return $this->getPrimaryKey();
 	}
 
-	public function getDisplayName() {
+	public function getDisplayName(): ?string {
 		return $this->userManager->getDisplayName($this->getPrimaryKey());
 	}
+
+	public function getUserObject(): IUser {
+		return $this->getObject();
+	}
 }

lib/Listeners/AclCreatedRemovedListener.php

@@ -0,0 +1,43 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCA\Deck\Listeners;
+
+use OCA\Deck\Event\AclCreatedEvent;
+use OCA\Deck\Event\AclDeletedEvent;
+use OCA\Files_Sharing\Event\UserShareAccessUpdatedEvent;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventDispatcher;
+use OCP\EventDispatcher\IEventListener;
+use OCP\IGroupManager;
+use OCP\IUserManager;
+use OCP\Share\IShare;
+
+class AclCreatedRemovedListener implements IEventListener {
+	public function __construct(
+		private IGroupManager $groupManager,
+		private IEventDispatcher $eventDispatcher,
+		private IUserManager $userManager,
+	) {
+	}
+
+	public function handle(Event $event): void {
+		if (!$event instanceof AclDeletedEvent && !$event instanceof AclCreatedEvent) {
+			return;
+		}
+
+		$acl = $event->getAcl();
+		if ($acl->getType() === IShare::TYPE_GROUP) {
+			$group = $this->groupManager->get($acl->getParticipant());
+			foreach ($group->getUsers() as $user) {
+				$this->eventDispatcher->dispatchTyped(new UserShareAccessUpdatedEvent($user));
+			}
+		} else {
+			$user = $this->userManager->get($acl->getParticipant());
+			$this->eventDispatcher->dispatchTyped(new UserShareAccessUpdatedEvent($user));
+		}
+	}
+}

lib/Service/BoardService.php

@@ -7,6 +7,7 @@
 
 namespace OCA\Deck\Service;
 
+use OC\User\LazyUser;
 use OCA\Deck\Activity\ActivityManager;
 use OCA\Deck\Activity\ChangeSet;
 use OCA\Deck\AppInfo\Application;
@@ -34,6 +35,7 @@
 use OCA\Deck\NoPermissionException;
 use OCA\Deck\Notification\NotificationHelper;
 use OCA\Deck\Validators\BoardServiceValidator;
+use OCA\Files_Sharing\Event\UserShareAccessUpdatedEvent;
 use OCP\AppFramework\Db\DoesNotExistException;
 use OCP\AppFramework\Db\MultipleObjectsReturnedException;
 use OCP\DB\Exception as DbException;
@@ -42,6 +44,7 @@
 use OCP\IDBConnection;
 use OCP\IL10N;
 use OCP\IURLGenerator;
+use OCP\IUserManager;
 use OCP\Server;
 use Psr\Container\ContainerExceptionInterface;
 use Psr\Container\NotFoundExceptionInterface;
@@ -69,6 +72,7 @@
 		private IDBConnection $connection,
 		private BoardServiceValidator $boardServiceValidator,
 		private SessionMapper $sessionMapper,
+		private IUserManager $userManager,
 		private ?string $userId,
 	) {
 	}
@@ -235,6 +239,13 @@
 		$this->activityManager->triggerEvent(ActivityManager::DECK_OBJECT_BOARD, $board, ActivityManager::SUBJECT_BOARD_DELETE);
 		$this->changeHelper->boardChanged($board->getId());
 
+		$acls = $this->aclMapper->findAll($id);
+		foreach ($acls as $acl) {
+			$user = new LazyUser($acl->getParticipant(), $this->userManager);
+			$event = new UserShareAccessUpdatedEvent($user);
+			$this->eventDispatcher->dispatchTyped($event);
+		}
+
 		return $board;
 	}
 
@@ -253,6 +264,13 @@
 		$this->activityManager->triggerEvent(ActivityManager::DECK_OBJECT_BOARD, $board, ActivityManager::SUBJECT_BOARD_RESTORE);
 		$this->changeHelper->boardChanged($board->getId());
 
+		$acls = $this->aclMapper->findAll($id);
+		foreach ($acls as $acl) {
+			$user = new LazyUser($acl->getParticipant(), $this->userManager);
+			$event = new UserShareAccessUpdatedEvent($user);
+			$this->eventDispatcher->dispatchTyped($event);
+		}
+
 		return $board;
 	}
 

lib/Service/PermissionService.php

@@ -207,7 +207,7 @@
 	 * Required to allow assigning them to cards
 	 *
 	 * @param $boardId
-	 * @return array
+	 * @return User[]
 	 */
 	public function findUsers($boardId, $refresh = false) {
 		// cache users of a board so we don't query them for every cards
@@ -276,7 +276,7 @@
 			}
 		}
 		$this->users[(string)$boardId] = $users;
 		return $this->users[(string)$boardId];
 	}
 
 	public function canCreate() {

lib/Sharing/DeckShareProvider.php

@@ -34,6 +34,7 @@
 use OCP\Share\IManager;
 use OCP\Share\IPartialShareProvider;
 use OCP\Share\IShare;
+use OCP\Share\IShareProviderGetUsers;
 
 /** Taken from the talk shareapicontroller helper */
 interface IShareProviderBackend {
@@ -43,7 +44,7 @@ public function formatShare(IShare $share): array;
 	public function canAccessShare(IShare $share, string $user): bool;
 }
 
-class DeckShareProvider implements \OCP\Share\IShareProvider, IPartialShareProvider {
+class DeckShareProvider implements \OCP\Share\IShareProvider, IPartialShareProvider, IShareProviderGetUsers {
 	public const DECK_FOLDER = '/Deck';
 	public const DECK_FOLDER_PLACEHOLDER = '/{DECK_PLACEHOLDER}';
 
@@ -1108,4 +1109,20 @@ public function getOrphanedAttachmentShares(): array {
 
 		return $shares;
 	}
+
+	public function getUsersForShare(IShare $share): iterable {
+		if ($share->getShareType() === IShare::TYPE_DECK) {
+			$cardId = (int)$share->getSharedWith();
+			$boardId = $this->cardMapper->findBoardId($cardId);
+			if ($boardId === null) {
+				return [];
+			}
+
+			foreach ($this->permissionService->findUsers($boardId) as $user) {
+				yield $user->getUserObject();
+			}
+		}
+
+		return [];
+	}
 }

tests/unit/Service/BoardServiceTest.php

@@ -40,6 +40,7 @@
 use OCA\Deck\Db\Session;
 use OCA\Deck\Db\SessionMapper;
 use OCA\Deck\Db\StackMapper;
+use OCA\Deck\Db\User;
 use OCA\Deck\Event\AclCreatedEvent;
 use OCA\Deck\Event\AclDeletedEvent;
 use OCA\Deck\NoPermissionException;
@@ -50,6 +51,7 @@
 use OCP\IDBConnection;
 use OCP\IURLGenerator;
 use OCP\IUser;
+use OCP\IUserManager;
 use PHPUnit\Framework\MockObject\MockObject;
 use Test\TestCase;
 
@@ -95,6 +97,9 @@ class BoardServiceTest extends TestCase {
 	/** @var SessionMapper */
 	private $sessionMapper;
 
+	/** @var IUserManager */
+	private $userManager;
+
 	public function setUp(): void {
 		parent::setUp();
 		$this->l10n = $this->createMock(L10N::class);
@@ -115,6 +120,7 @@ public function setUp(): void {
 		$this->connection = $this->createMock(IDBConnection::class);
 		$this->boardServiceValidator = $this->createMock(BoardServiceValidator::class);
 		$this->sessionMapper = $this->createMock(SessionMapper::class);
+		$this->userManager = $this->createMock(IUserManager::class);
 
 		$this->service = new BoardService(
 			$this->boardMapper,
@@ -135,6 +141,7 @@ public function setUp(): void {
 			$this->connection,
 			$this->boardServiceValidator,
 			$this->sessionMapper,
+			$this->userManager,
 			$this->userId
 		);
 
@@ -262,6 +269,9 @@ public function testDelete() {
 		$this->boardMapper->expects($this->once())
 			->method('update')
 			->willReturn($boardDeleted);
+		$this->aclMapper->expects($this->once())
+			->method('findAll')
+			->willReturn([]);
 		$this->assertEquals($boardDeleted, $this->service->delete(123));
 	}