+ /**
+ * Return all identities to a user
+ *
+ * @param int $uid The user id
+ * @return array All identities for this user
+ *
+ * Example for a return:
+ * [
+ * [
+ * 'uid' => 1,
+ * 'username' => 'maxmuster',
+ * 'nickname' => 'Max Mustermann'
+ * ],
+ * [
+ * 'uid' => 2,
+ * 'username' => 'johndoe',
+ * 'nickname' => 'John Doe'
+ * ]
+ * ]
+ */
+ public static function identities($uid)
+ {
+ $identities = [];
+
+ $user = DBA::selectFirst('user', ['uid', 'nickname', 'username', 'parent-uid'], ['uid' => $uid]);
+ if (!DBA::isResult($user)) {
+ return $identities;
+ }
+
+ if ($user['parent-uid'] == 0) {
+ // First add our own entry
+ $identities = [['uid' => $user['uid'],
+ 'username' => $user['username'],
+ 'nickname' => $user['nickname']]];
+
+ // Then add all the children
+ $r = DBA::select('user', ['uid', 'username', 'nickname'],
+ ['parent-uid' => $user['uid'], 'account_removed' => false]);
+ if (DBA::isResult($r)) {
+ $identities = array_merge($identities, DBA::toArray($r));
+ }
+ } else {
+ // First entry is our parent
+ $r = DBA::select('user', ['uid', 'username', 'nickname'],
+ ['uid' => $user['parent-uid'], 'account_removed' => false]);
+ if (DBA::isResult($r)) {
+ $identities = DBA::toArray($r);
+ }
+
+ // Then add all siblings
+ $r = DBA::select('user', ['uid', 'username', 'nickname'],
+ ['parent-uid' => $user['parent-uid'], 'account_removed' => false]);
+ if (DBA::isResult($r)) {
+ $identities = array_merge($identities, DBA::toArray($r));
+ }