nextcloud / server

	 * @return array

	 * @throws OCSException

	 */

	protected function getUserSubAdminGroupsData(string $userId): array {

		$user = $this->userManager->get($userId);

		// Check if the user exists

		if($user === null) {

			throw new OCSException('User does not exist', 101);

		}

		// Get the subadmin groups

		$subAdminGroups = $this->groupManager->getSubAdmin()->getSubAdminsGroups($user);

		$groups = [];

		foreach ($subAdminGroups as $key => $group) {

			$groups[] = $group->getGID();

		}

		return $groups;

	}

	/**

	 * Get the groups a user is a subadmin of

	 * @return DataResponse

	 * @throws OCSException

	 */

	public function getSubAdminsOfGroup(string $groupId): DataResponse {

		// Check group exists

		$targetGroup = $this->groupManager->get($groupId);

		if($targetGroup === null) {

			throw new OCSException('Group does not exist', 101);

		}

		/** @var IUser[] $subadmins */

		$subadmins = $this->groupManager->getSubAdmin()->getGroupsSubAdmins($targetGroup);

		// New class returns IUser[] so convert back

		$uids = [];

		foreach ($subadmins as $user) {

			$uids[] = $user->getUID();

		}

		return new DataResponse($uids);

	}

}