Search also the email and displayname in user mangement for groups

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

lib/private/Group/Database.php

@@ -348,15 +348,27 @@ public function usersInGroup($gid, $search = '', $limit = -1, $offset = 0) {
 		$this->fixDI();
 
 		$query = $this->dbConn->getQueryBuilder();
-		$query->select('uid')
-			->from('group_user')
+		$query->select('g.uid')
+			->from('group_user', 'g')
 			->where($query->expr()->eq('gid', $query->createNamedParameter($gid)))
-			->orderBy('uid', 'ASC');
+			->orderBy('g.uid', 'ASC');
 
 		if ($search !== '') {
-			$query->andWhere($query->expr()->like('uid', $query->createNamedParameter(
-				'%' . $this->dbConn->escapeLikeParameter($search) . '%'
-			)));
+			$query->leftJoin('g', 'users', 'u', $query->expr()->eq('g.uid', 'u.uid'))
+				->leftJoin('u', 'preferences', 'p', $query->expr()->andX(
+					$query->expr()->eq('userid', 'u.uid'),
+					$query->expr()->eq('appid', $query->expr()->literal('settings')),
+					$query->expr()->eq('configkey', $query->expr()->literal('email')))
+				)
+				// sqlite doesn't like re-using a single named parameter here
+				->andWhere(
+					$query->expr()->orX(
+						$query->expr()->ilike('g.uid', $query->createNamedParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%')),
+						$query->expr()->ilike('displayname', $query->createNamedParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%')),
+						$query->expr()->ilike('configvalue', $query->createNamedParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%'))
+					)
+				)
+				->orderBy('uid_lower', 'ASC');
 		}
 
 		if ($limit !== -1) {