From 11876436367fe69b0d3ef636172c90d2e62582cf Mon Sep 17 00:00:00 2001
From: Julius Knorr <jus@bitgrid.net>
Date: Tue, 30 Dec 2025 10:35:52 +0100
Subject: [PATCH 1/2] chore: Expose IUser object of internal DTO

Signed-off-by: Julius Knorr <jus@bitgrid.net>
---
 lib/Db/User.php                   | 11 ++++++++---
 lib/Service/PermissionService.php |  2 +-
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/lib/Db/User.php b/lib/Db/User.php
index 7c50aa9b1..3902b177e 100644
--- a/lib/Db/User.php
+++ b/lib/Db/User.php
@@ -7,6 +7,7 @@
 
 namespace OCA\Deck\Db;
 
+use OCP\IUser;
 use OCP\IUserManager;
 
 class User extends RelationalObject {
@@ -18,7 +19,7 @@ public function __construct($uid, IUserManager $userManager) {
 		});
 	}
 
-	public function getObjectSerialization() {
+	public function getObjectSerialization(): array {
 		return [
 			'uid' => $this->getObject()->getUID(),
 			'displayname' => $this->getDisplayName(),
@@ -26,11 +27,15 @@ public function getObjectSerialization() {
 		];
 	}
 
-	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();
+	}
 }
diff --git a/lib/Service/PermissionService.php b/lib/Service/PermissionService.php
index 0f8831daa..fc0fb1e9a 100644
--- a/lib/Service/PermissionService.php
+++ b/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

From 54c280cb3933858492a20200117fcc3f09de4f72 Mon Sep 17 00:00:00 2001
From: Julius Knorr <jus@bitgrid.net>
Date: Tue, 30 Dec 2025 10:37:34 +0100
Subject: [PATCH 2/2] chore: Implement getUsersForShare on share provider

Signed-off-by: Julius Knorr <jus@bitgrid.net>
---
 lib/Sharing/DeckShareProvider.php | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/lib/Sharing/DeckShareProvider.php b/lib/Sharing/DeckShareProvider.php
index ca0dbc5e7..e9504234b 100644
--- a/lib/Sharing/DeckShareProvider.php
+++ b/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 [];
+	}
 }