Daily commit

lib/util/login.dart

@@ -0,0 +1,15 @@
+import 'package:app_gaslieferung/exceptions/login.dart';
+import 'package:app_links/app_links.dart';
+
+String getSessionIdFromUrl(Uri uri) {
+  if (uri.scheme == 'myapp' && uri.host == 'callback') {
+    final code = uri.queryParameters['session_id'];
+    if (code != null) {
+      return code;
+    } else {
+      throw LoginNoSessionIdException();
+    }
+  }
+
+  throw LoginInvalidUrlException();
+}