🐛 Fix platform specific captcha solution cause build failed.

lib/screens/auth/register.dart

@@ -7,7 +7,7 @@ import 'package:material_symbols_icons/symbols.dart';
 import 'package:provider/provider.dart';
 import 'package:styled_widget/styled_widget.dart';
 import 'package:surface/providers/sn_network.dart';
-import 'package:surface/screens/captcha.dart';
+import 'package:surface/screens/captcha/captcha.dart';
 import 'package:surface/widgets/dialog.dart';
 import 'package:surface/widgets/navigation/app_scaffold.dart';
 import 'package:url_launcher/url_launcher_string.dart';

lib/screens/captcha/captcha.dart

@@ -0,0 +1,3 @@
+import 'package:flutter/foundation.dart' show kIsWeb;
+
+export 'captcha_native.dart' if (kIsWeb) 'captcha_web.dart';

lib/screens/captcha/captcha_native.dart

@@ -0,0 +1,37 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_inappwebview/flutter_inappwebview.dart';
+import 'package:provider/provider.dart';
+import 'package:surface/providers/config.dart';
+import 'package:surface/widgets/navigation/app_scaffold.dart';
+
+class CaptchaScreen extends StatefulWidget {
+  const CaptchaScreen({super.key});
+
+  @override
+  State<CaptchaScreen> createState() => _CaptchaScreenState();
+}
+
+class _CaptchaScreenState extends State<CaptchaScreen> {
+  @override
+  Widget build(BuildContext context) {
+    final cfg = context.read<ConfigProvider>();
+
+    return AppScaffold(
+      appBar: AppBar(title: Text("reCaptcha").tr()),
+      body: InAppWebView(
+        initialUrlRequest: URLRequest(
+          url: WebUri('${cfg.serverUrl}/captcha?redirect_uri=solink://captcha'),
+        ),
+        shouldOverrideUrlLoading: (controller, navigationAction) async {
+          Uri? url = navigationAction.request.url;
+          if (url != null && url.queryParameters.containsKey('captcha_tk')) {
+            Navigator.pop(context, url.queryParameters['captcha_tk']!);
+            return NavigationActionPolicy.CANCEL;
+          }
+          return NavigationActionPolicy.ALLOW;
+        },
+      ),
+    );
+  }
+}

lib/screens/captcha/captcha_web.dart

@@ -1,17 +1,13 @@
 import 'dart:html' as html;
 import 'dart:ui_web' as ui;
 import 'package:easy_localization/easy_localization.dart';
-import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:flutter/material.dart';
-import 'package:flutter_inappwebview/flutter_inappwebview.dart';
 import 'package:provider/provider.dart';
 import 'package:surface/providers/config.dart';
 import 'package:surface/widgets/navigation/app_scaffold.dart';
 
 class CaptchaScreen extends StatefulWidget {
-  const CaptchaScreen({
+  const CaptchaScreen({super.key});
-    super.key,
-  });
 
   @override
   State<CaptchaScreen> createState() => _CaptchaScreenState();
@@ -21,9 +17,7 @@ class _CaptchaScreenState extends State<CaptchaScreen> {
   @override
   void initState() {
     super.initState();
-    if (kIsWeb) {
+    _setupWebListener();
-      _setupWebListener();
-    }
   }
 
   void _setupWebListener() {
@@ -37,9 +31,8 @@ class _CaptchaScreenState extends State<CaptchaScreen> {
       }
     });
 
-    // Create an iframe for the captcha page
     final iframe = html.IFrameElement()
-      ..src = '${context.read<ConfigProvider>().serverUrl}/captcha?redirect_uri=solink://captcha'
+      ..src = '${context.read<ConfigProvider>().serverUrl}/captcha?redirect_uri=web'
       ..style.border = 'none'
       ..width = '100%'
       ..height = '100%';
@@ -47,36 +40,15 @@ class _CaptchaScreenState extends State<CaptchaScreen> {
     html.document.body!.append(iframe);
     ui.platformViewRegistry.registerViewFactory(
       'captcha-iframe',
-      (int viewId) => iframe,
+          (int viewId) => iframe,
     );
   }
 
   @override
   Widget build(BuildContext context) {
-    final cfg = context.read<ConfigProvider>();
-
-    if (kIsWeb) {
-      return AppScaffold(
-        appBar: AppBar(title: Text("reCaptcha").tr()),
-        body: HtmlElementView(viewType: 'captcha-iframe'),
-      );
-    }
-
     return AppScaffold(
       appBar: AppBar(title: Text("reCaptcha").tr()),
-      body: InAppWebView(
+      body: HtmlElementView(viewType: 'captcha-iframe'),
-        initialUrlRequest: URLRequest(
-          url: WebUri('${cfg.serverUrl}/captcha?redirect_uri=solink://captcha'),
-        ),
-        shouldOverrideUrlLoading: (controller, navigationAction) async {
-          Uri? url = navigationAction.request.url;
-          if (url != null && url.queryParameters.containsKey('captcha_tk')) {
-            Navigator.pop(context, url.queryParameters['captcha_tk']!);
-            return NavigationActionPolicy.CANCEL;
-          }
-          return NavigationActionPolicy.ALLOW;
-        },
-      ),
     );
   }
-}
+}

lib/screens/home.dart

@@ -18,7 +18,7 @@ import 'package:surface/providers/sn_network.dart';
 import 'package:surface/providers/special_day.dart';
 import 'package:surface/providers/userinfo.dart';
 import 'package:surface/providers/widget.dart';
-import 'package:surface/screens/captcha.dart';
+import 'package:surface/screens/captcha/captcha.dart';
 import 'package:surface/types/check_in.dart';
 import 'package:surface/types/post.dart';
 import 'package:surface/widgets/app_bar_leading.dart';