refactor: UIA registering

lib/views/sign_up_password.dart

@@ -1,4 +1,3 @@
-import 'package:adaptive_dialog/adaptive_dialog.dart';
 import 'package:adaptive_page_layout/adaptive_page_layout.dart';
 
 import 'package:famedlysdk/famedlysdk.dart';
@@ -7,7 +6,6 @@ import 'package:fluffychat/views/ui/sign_up_password_ui.dart';
 import 'package:fluffychat/views/widgets/matrix.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
-import 'package:url_launcher/url_launcher.dart';
 import '../utils/platform_infos.dart';
 
 class SignUpPassword extends StatefulWidget {
@@ -22,13 +20,12 @@ class SignUpPassword extends StatefulWidget {
 class SignUpPasswordController extends State<SignUpPassword> {
   final TextEditingController passwordController = TextEditingController();
   String passwordError;
-  String _lastAuthWebViewStage;
   bool loading = false;
   bool showPassword = true;
 
   void toggleShowPassword() => setState(() => showPassword = !showPassword);
 
-  void signUpAction({AuthenticationData auth}) async {
+  void signUpAction() async {
     final matrix = Matrix.of(context);
     if (passwordController.text.isEmpty) {
       setState(() => passwordError = L10n.of(context).pleaseEnterYourPassword);
@@ -43,65 +40,13 @@ class SignUpPasswordController extends State<SignUpPassword> {
     try {
       setState(() => loading = true);
       final waitForLogin = matrix.client.onLoginStateChanged.stream.first;
-      await matrix.client.register(
+      await matrix.client.uiaRequestBackground((auth) => matrix.client.register(
             username: widget.username,
             password: passwordController.text,
             initialDeviceDisplayName: PlatformInfos.clientName,
             auth: auth,
-      );
+          ));
       await waitForLogin;
-    } on MatrixException catch (exception) {
-      if (exception.requireAdditionalAuthentication) {
-        final stages = exception.authenticationFlows.first.stages;
-
-        final currentStage = exception.completedAuthenticationFlows == null
-            ? stages.first
-            : stages.firstWhere((stage) =>
-                !exception.completedAuthenticationFlows.contains(stage) ??
-                true);
-
-        if (currentStage == 'm.login.dummy') {
-          signUpAction(
-            auth: AuthenticationData(
-              type: currentStage,
-              session: exception.session,
-            ),
-          );
-        } else {
-          if (_lastAuthWebViewStage == currentStage) {
-            _lastAuthWebViewStage = null;
-            setState(
-                () => passwordError = L10n.of(context).oopsSomethingWentWrong);
-            return setState(() => loading = false);
-          }
-          _lastAuthWebViewStage = currentStage;
-          await launch(
-            Matrix.of(context).client.homeserver.toString() +
-                '/_matrix/client/r0/auth/$currentStage/fallback/web?session=${exception.session}',
-          );
-          if (OkCancelResult.ok ==
-              await showOkCancelAlertDialog(
-                message: L10n.of(context).pleaseFollowInstructionsOnWeb,
-                context: context,
-                okLabel: L10n.of(context).next,
-                cancelLabel: L10n.of(context).cancel,
-                useRootNavigator: false,
-              )) {
-            signUpAction(
-              auth: AuthenticationData(session: exception.session),
-            );
-          } else {
-            setState(() {
-              loading = false;
-              passwordError = null;
-            });
-          }
-          return;
-        }
-      } else {
-        setState(() => passwordError = exception.errorMessage);
-        return setState(() => loading = false);
-      }
     } catch (exception) {
       setState(() => passwordError = exception.toString());
       return setState(() => loading = false);

lib/views/widgets/matrix.dart

@@ -155,7 +155,7 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
         );
       default:
         await launch(
-          Matrix.of(context).client.homeserver.toString() +
+          client.homeserver.toString() +
               '/_matrix/client/r0/auth/$stage/fallback/web?session=${uiaRequest.session}',
         );
         if (OkCancelResult.ok ==
@@ -169,6 +169,8 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
           return uiaRequest.completeStage(
             AuthenticationData(session: uiaRequest.session),
           );
+        } else {
+          return uiaRequest.cancel();
         }
     }
   }