fix: Correctly count disabled users for SAML groups subadmins

If too many users return -1 as for LDAP so that link is shown

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

apps/settings/lib/Controller/UsersController.php

@@ -148,20 +148,12 @@ public function usersList(): TemplateResponse {
 				}, 0);
 			} else {
 				// User is subadmin !
-				// Map group list to ids to retrieve the countDisabledUsersOfGroups
-				$userGroups = $this->groupManager->getUserGroups($user);
-				$groupsIds = [];
-
-				foreach ($groups as $key => $group) {
-					// $userCount += (int)$group['usercount'];
-					$groupsIds[] = $group['id'];
-				}
-
-				$userCount += $this->userManager->countUsersOfGroups($groupsInfo->getGroups());
-				$disabledUsers = $this->userManager->countDisabledUsersOfGroups($groupsIds);
+				[$userCount,$disabledUsers] = $this->userManager->countUsersAndDisabledUsersOfGroups($groupsInfo->getGroups(), 999);
 			}
 
-			$userCount -= $disabledUsers;
+			if ($disabledUsers > 0) {
+				$userCount -= $disabledUsers;
+			}
 		}
 
 		$recentUsersGroup = [

lib/private/User/Manager.php

@@ -492,8 +492,7 @@ public function countUsers() {
 	 * returns how many users per backend exist in the requested groups (if supported by backend)
 	 *
 	 * @param IGroup[] $groups an array of gid to search in
-	 * @return array|int an array of backend class as key and count number as value
-	 *                if $hasLoggedIn is true only an int is returned
+	 * @return int
 	 */
 	public function countUsersOfGroups(array $groups) {
 		$users = [];
@@ -506,6 +505,30 @@ public function countUsersOfGroups(array $groups) {
 		return count(array_unique($users));
 	}
 
+	/**
+	 * returns how many users per backend exist in the requested groups (if supported by backend)
+	 *
+	 * @param IGroup[] $groups an array of groups to search in
+	 * @param int $limit limit to stop counting
+	 * @return array{int,int} total number of users, and number of disabled users in the given groups, below $limit. If limit is reached, -1 is returned for number of disabled users
+	 */
+	public function countUsersAndDisabledUsersOfGroups(array $groups, int $limit): array {
+		$users = [];
+		$disabled = [];
+		foreach ($groups as $group) {
+			foreach ($group->getUsers() as $user) {
+				$users[$user->getUID()] = 1;
+				if (!$user->isEnabled()) {
+					$disabled[$user->getUID()] = 1;
+				}
+				if (count($users) >= $limit) {
+					return [count($users),-1];
+				}
+			}
+		}
+		return [count($users),count($disabled)];
+	}
+
 	/**
 	 * The callback is executed for each user on each backend.
 	 * If the callback returns false no further users will be retrieved.