✨ Auth guard

lib/screens/account.dart

@@ -1,15 +1,33 @@
+import 'dart:io';
+
 import 'package:flutter/material.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:goatagent/auth.dart';
+import 'package:goatagent/widgets/name_card.dart';
+import 'package:oauth2/oauth2.dart' as oauth2;
+
+import 'auth.dart';
 
 class AccountScreen extends StatelessWidget {
   const AccountScreen({super.key});
 
   @override
   Widget build(BuildContext context) {
-    return const Scaffold(
-      body: Center(
-        child: Text("你好"),
+    return Scaffold(
+      body: SafeArea(
+        child: Padding(
+          padding: const EdgeInsets.symmetric(vertical: 5, horizontal: 20),
+          child: Column(
+            children: [
+              NameCard(
+                onLogin: () async {
+                  await AuthGuard().login(context);
+                },
+              ),
+            ],
+          ),
+        ),
       ),
     );
   }
-
-}
+}

lib/screens/auth.dart

@@ -0,0 +1,32 @@
+import 'package:flutter/material.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+
+class AuthorizationPage extends StatelessWidget {
+  final Uri authorizationUrl;
+
+  const AuthorizationPage(this.authorizationUrl, {super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Connect with Goatpass'),
+      ),
+      body: WebViewWidget(
+        controller: WebViewController()
+          ..setJavaScriptMode(JavaScriptMode.unrestricted)
+          ..setBackgroundColor(Colors.indigo)
+          ..setNavigationDelegate(NavigationDelegate(
+            onNavigationRequest: (NavigationRequest request) {
+              if (request.url.startsWith('goatagent://auth')) {
+                Navigator.of(context).pop(request.url);
+                return NavigationDecision.prevent;
+              }
+              return NavigationDecision.navigate;
+            },
+          ))
+          ..loadRequest(authorizationUrl),
+      ),
+    );
+  }
+}