allow full username in login

lib/pages/login/login.dart

@@ -1,16 +1,15 @@
 import 'dart:async';
 
-import 'package:flutter/material.dart';
-
 import 'package:adaptive_dialog/adaptive_dialog.dart';
-import 'package:flutter_gen/gen_l10n/l10n.dart';
-import 'package:future_loading_dialog/future_loading_dialog.dart';
-import 'package:matrix/matrix.dart';
-
 import 'package:fluffychat/pangea/controllers/pangea_controller.dart';
 import 'package:fluffychat/pangea/utils/firebase_analytics.dart';
 import 'package:fluffychat/utils/localized_exception_extension.dart';
 import 'package:fluffychat/widgets/matrix.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+import 'package:future_loading_dialog/future_loading_dialog.dart';
+import 'package:matrix/matrix.dart';
+
 import '../../utils/platform_infos.dart';
 import 'login_view.dart';
 
@@ -75,7 +74,13 @@ class LoginController extends State<Login> {
     _coolDown?.cancel();
 
     try {
-      final username = usernameController.text;
+      // #Pangea
+      String username = usernameController.text;
+      if (RegExp(r'^@(\w+):').hasMatch(username)) {
+        username =
+            RegExp(r'^@(\w+):').allMatches(username).elementAt(0).group(1)!;
+      }
+      // Pangea#
       AuthenticationIdentifier identifier;
       if (username.isEmail) {
         identifier = AuthenticationThirdPartyIdentifier(

lib/pages/login/login_view.dart

@@ -89,7 +89,9 @@ class LoginView extends StatelessWidget {
                     readOnly: controller.loading,
                     autocorrect: false,
                     autofocus: true,
-                    onChanged: controller.checkWellKnownWithCoolDown,
+                    // #Pangea
+                    // onChanged: controller.checkWellKnownWithCoolDown,
+                    // Pangea#
                     controller: controller.usernameController,
                     textInputAction: TextInputAction.next,
                     keyboardType: TextInputType.emailAddress,