chore/share provide get users

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/Service/PermissionService.php

@@ -207,7 +207,7 @@ public function userCan(array $acls, $permission, $userId = null) {
 	 * 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

lib/Sharing/DeckShareProvider.php

@@ -33,6 +33,7 @@
 use OCP\Share\Exceptions\ShareNotFound;
 use OCP\Share\IManager;
 use OCP\Share\IShare;
+use OCP\Share\IShareProviderGetUsers;
 
 /** Taken from the talk shareapicontroller helper */
 interface IShareProviderBackend {
@@ -42,7 +43,7 @@ public function formatShare(IShare $share): array;
 	public function canAccessShare(IShare $share, string $user): bool;
 }
 
-class DeckShareProvider implements \OCP\Share\IShareProvider {
+class DeckShareProvider implements \OCP\Share\IShareProvider, IShareProviderGetUsers {
 	public const DECK_FOLDER = '/Deck';
 	public const DECK_FOLDER_PLACEHOLDER = '/{DECK_PLACEHOLDER}';
 
@@ -1067,4 +1068,20 @@ 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 [];
+	}
 }