fix: SSO on web

lib/main.dart

@@ -57,14 +57,23 @@ void main() async {
     BackgroundPush.clientOnly(client);
   }
 
+  final queryParameters = <String, String>{};
+  if (kIsWeb) {
+    queryParameters
+        .addAll(Uri.parse(html.window.location.href).queryParameters);
+  }
+
   runZonedGuarded(
     () => runApp(PlatformInfos.isMobile
         ? AppLock(
-            builder: (args) => FluffyChatApp(client: client),
+            builder: (args) => FluffyChatApp(
+              client: client,
+              queryParameters: queryParameters,
+            ),
             lockScreen: LockScreen(),
             enabled: false,
           )
-        : FluffyChatApp(client: client)),
+        : FluffyChatApp(client: client, queryParameters: queryParameters)),
     SentryController.captureException,
   );
 }
@@ -72,8 +81,10 @@ void main() async {
 class FluffyChatApp extends StatefulWidget {
   final Widget testWidget;
   final Client client;
+  final Map<String, String> queryParameters;
 
-  const FluffyChatApp({Key key, this.testWidget, @required this.client})
+  const FluffyChatApp(
+      {Key key, this.testWidget, @required this.client, this.queryParameters})
       : super(key: key);
 
   /// getInitialLink may rereturn the value multiple times if this view is

lib/pages/homeserver_picker.dart

@@ -15,7 +15,6 @@ import 'package:vrouter/vrouter.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
 import 'package:future_loading_dialog/future_loading_dialog.dart';
 import 'package:uni_links/uni_links.dart';
-import 'package:universal_html/html.dart' as html;
 
 import '../main.dart';
 
@@ -85,9 +84,8 @@ class HomeserverPickerController extends State<HomeserverPicker> {
     _initReceiveUri();
     if (kIsWeb) {
       WidgetsBinding.instance.addPostFrameCallback((_) {
-        final token =
-            Uri.parse(html.window.location.href).queryParameters['loginToken'];
-        _loginWithToken(token);
+        final token = Matrix.of(context).widget.queryParameters['loginToken'];
+        if (token != null) _loginWithToken(token);
       });
     }
   }

lib/widgets/matrix.dart

@@ -37,11 +37,14 @@ class Matrix extends StatefulWidget {
 
   final Client client;
 
+  final Map<String, String> queryParameters;
+
   Matrix({
     this.child,
     @required this.router,
     @required this.context,
     @required this.client,
+    this.queryParameters,
     Key key,
   }) : super(key: key);