💄 Better multi-factor authenticate callback experience

✨ Support custom app protocol solink://

lib/main.dart

@@ -2,6 +2,7 @@ import 'package:firebase_core/firebase_core.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_acrylic/flutter_acrylic.dart';
 import 'package:get/get.dart';
+import 'package:protocol_handler/protocol_handler.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
 import 'package:solian/exts.dart';
 import 'package:solian/firebase_options.dart';
@@ -17,6 +18,7 @@ import 'package:solian/providers/content/realm.dart';
 import 'package:solian/providers/friend.dart';
 import 'package:solian/providers/account_status.dart';
 import 'package:solian/router.dart';
+import 'package:solian/shells/listener_shell.dart';
 import 'package:solian/theme.dart';
 import 'package:solian/translations.dart';
 
@@ -31,6 +33,8 @@ void main() async {
     appRunner: () async {
       WidgetsFlutterBinding.ensureInitialized();
 
+      await protocolHandler.register('solink');
+
       await Firebase.initializeApp(
         options: DefaultFirebaseOptions.currentPlatform,
       );
@@ -101,8 +105,10 @@ class SolianApp extends StatelessWidget {
         });
       },
       builder: (context, child) {
-        return ScaffoldMessenger(
-          child: child ?? Container(),
+        return ListenerShell(
+          child: ScaffoldMessenger(
+            child: child ?? Container(),
+          ),
         );
       },
     );

lib/screens/auth/signin.dart

@@ -41,8 +41,10 @@ class _SignInPopupState extends State<SignInPopup> {
               TextButton(
                 child: Text('next'.tr),
                 onPressed: () {
+                  const redirect = 'solink://auth?status=done';
                   launchUrlString(
-                    '${ServiceFinder.services['passport']}/mfa?close=yes&ticketId=${e.ticketId}',
+                    '${ServiceFinder.services['passport']}/mfa?redirect_uri=$redirect&ticketId=${e.ticketId}',
+                    mode: LaunchMode.inAppWebView,
                   );
                   Navigator.pop(context);
                 },

lib/shells/listener_shell.dart

@@ -0,0 +1,39 @@
+import 'package:flutter/material.dart';
+import 'package:protocol_handler/protocol_handler.dart';
+import 'package:url_launcher/url_launcher.dart';
+
+class ListenerShell extends StatefulWidget {
+  final Widget child;
+
+  const ListenerShell({super.key, required this.child});
+
+  @override
+  State<ListenerShell> createState() => _ListenerShellState();
+}
+
+class _ListenerShellState extends State<ListenerShell> with ProtocolListener {
+  @override
+  void initState() {
+    protocolHandler.addListener(this);
+    super.initState();
+  }
+
+  @override
+  void dispose() {
+    protocolHandler.removeListener(this);
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return widget.child;
+  }
+
+  @override
+  void onProtocolUrlReceived(String url) {
+    final uri = url.replaceFirst('solink://', '');
+    if (uri == 'auth?status=done') {
+      closeInAppWebView();
+    }
+  }
+}