Fix psalm spotted type errors

Signed-off-by: Côme Chilliet <[email protected]>

Author: come-nc

lib/private/Group/Database.php

@@ -359,11 +359,11 @@ public function groupsExists(array $gids): array {
 				->where($qb->expr()->in('gid', $qb->createNamedParameter($chunk, IQueryBuilder::PARAM_STR_ARRAY)))
 				->executeQuery();
 			while ($row = $result->fetch()) {
-				$this->groupCache[$row['gid']] = [
-					'displayname' => $row['displayname'],
-					'gid' => $row['gid'],
+				$this->groupCache[(string)$row['gid']] = [
+					'displayname' => (string)$row['displayname'],
+					'gid' => (string)$row['gid'],
 				];
-				$existingGroups[] = $gid;
+				$existingGroups[] = (string)$row['gid'];
 			}
 			$result->closeCursor();
 		}
@@ -553,10 +553,10 @@ public function getGroupsDetails(array $gids): array {
 
 			$result = $query->executeQuery();
 			while ($row = $result->fetch()) {
-				$details[$row['gid']] = ['displayName' => $row['displayname']];
-				$this->groupCache[$row['gid']] = [
-					'displayname' => $row['displayname'],
-					'gid' => $row['gid'],
+				$details[(string)$row['gid']] = ['displayName' => (string)$row['displayname']];
+				$this->groupCache[(string)$row['gid']] = [
+					'displayname' => (string)$row['displayname'],
+					'gid' => (string)$row['gid'],
 				];
 			}
 			$result->closeCursor();

lib/public/Group/Backend/IBatchMethodsBackend.php

@@ -48,13 +48,13 @@ public function groupsExists(array $gids): array;
 	/**
 	 * @brief Batch method to get the group details of a list of groups
 	 *
-	 * The default implementation in ABackend will just call getGroupDetail in
-	 * a loop. But a GroupBackend implementation should provides a more optimized
-	 * override this method to provide a more optimized way to execute this operation.
+	 * The default implementation in ABackend will just call getGroupDetails in
+	 * a loop. But a GroupBackend implementation should override this method
+	 * to provide a more optimized way to execute this operation.
 	 *
 	 * @throw \RuntimeException if called on a backend that doesn't implements IGroupDetailsBackend
 	 *
-	 * @return array<string, array{displayName: string}>
+	 * @return array<string, array{displayName?: string}>
 	 * @since 28.0.0
 	 */
 	public function getGroupsDetails(array $gids): array;