Implement dynamic backend URL configuration and setup screen [release]

client/deepdame/lib/core/network/backend_url_controller.dart

@@ -0,0 +1,21 @@
+import 'package:deepdame/core/storage/storage_providers.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'backend_url_controller.g.dart';
+
+@Riverpod(keepAlive: true)
+class BackendUrlController extends _$BackendUrlController {
+  @override
+  String? build() =>
+      ref.watch(sharedPreferencesProvider).getString('backend_url');
+
+  Future<void> setUrl(String url) async {
+    await ref.read(sharedPreferencesProvider).setString('backend_url', url);
+    state = url;
+  }
+
+  Future<void> clear() async {
+    await ref.read(sharedPreferencesProvider).remove('backend_url');
+    state = null;
+  }
+}

client/deepdame/lib/core/network/dio_client.dart

@@ -1,5 +1,9 @@
 import 'package:cookie_jar/cookie_jar.dart';
+import 'package:deepdame/core/network/auth_interceptor.dart';
+import 'package:deepdame/core/network/backend_url_controller.dart';
 import 'package:dio/dio.dart';
+import 'package:dio_cookie_manager/dio_cookie_manager.dart';
+import 'package:flutter/foundation.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
 part 'dio_client.g.dart';
@@ -8,4 +12,20 @@ part 'dio_client.g.dart';
 PersistCookieJar cookieJar(Ref ref) => throw UnimplementedError();
 
 @Riverpod(keepAlive: true)
-Dio dio(Ref ref) => throw UnimplementedError();
+Dio dio(Ref ref) {
+  final baseUrl = ref.watch(backendUrlControllerProvider) ?? '';
+  final dio = Dio(BaseOptions(baseUrl: baseUrl));
+  dio.interceptors.add(CookieManager(ref.watch(cookieJarProvider)));
+  dio.interceptors.add(AuthInterceptor(dio));
+
+  if (kDebugMode) {
+    dio.interceptors.add(
+      LogInterceptor(
+        requestBody: true,
+        responseBody: true,
+      ),
+    );
+  }
+
+  return dio;
+}

client/deepdame/lib/core/network/stomp_service.dart

@@ -2,7 +2,7 @@ import 'dart:async';
 import 'dart:convert';
 
 import 'package:cookie_jar/cookie_jar.dart';
-import 'package:deepdame/core/config/app_config.dart';
+import 'package:deepdame/core/network/backend_url_controller.dart';
 import 'package:deepdame/core/network/dio_client.dart';
 import 'package:flutter/foundation.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
@@ -13,11 +13,12 @@ part 'stomp_service.g.dart';
 enum StompState { disconnected, connecting, connected, error }
 
 class StompService {
-  StompService(this._cookieJar) {
+  StompService(this._cookieJar, this._baseUrl) {
     debugPrint('StompService constructed');
   }
 
   final CookieJar _cookieJar;
+  final String _baseUrl;
   StompClient? _client;
   final _state = StreamController<StompState>.broadcast();
   StompState _current = StompState.disconnected;
@@ -36,12 +37,12 @@ class StompService {
     if (_client?.connected ?? false) return;
     _emit(StompState.connecting);
 
-    final cookies = await _cookieJar.loadForRequest(Uri.parse(API_URL));
+    final cookies = await _cookieJar.loadForRequest(Uri.parse(_baseUrl));
     final cookieHeader = cookies.map((c) => '${c.name}=${c.value}').join('; ');
 
     _client = StompClient(
       config: StompConfig.sockJS(
-        url: '$API_URL/ws',
+        url: '$_baseUrl/ws',
         onConnect: (_) {
           debugPrint('----- STOMP CONNECTED');
           _emit(StompState.connected);
@@ -129,7 +130,8 @@ class StompService {
 
 @Riverpod(keepAlive: true)
 StompService stompService(Ref ref) {
-  final service = StompService(ref.watch(cookieJarProvider));
+  final baseUrl = ref.watch(backendUrlControllerProvider) ?? '';
+  final service = StompService(ref.watch(cookieJarProvider), baseUrl);
   ref.onDispose(service.dispose);
   return service;
 }

client/deepdame/lib/core/routing/app_router.dart

@@ -3,6 +3,7 @@ import 'package:deepdame/features/auth/login_screen.dart';
 import 'package:deepdame/features/auth/recover_account.dart';
 import 'package:deepdame/features/auth/register_screen.dart';
 import 'package:deepdame/features/auth/validate_email.dart';
+import 'package:deepdame/features/backend_setup/backend_setup_screen.dart';
 import 'package:deepdame/features/banned/banned_screen.dart';
 import 'package:deepdame/features/chat/chat_screen.dart';
 import 'package:deepdame/features/dev/test/dev_chat_probe_screen.dart';
@@ -34,6 +35,11 @@ final appRouter = GoRouter(
       path: '/splash',
       builder: (context, state) => const SplashScreen(),
     ),
+    GoRoute(
+      name: 'backend-setup',
+      path: '/backend-setup',
+      builder: (context, state) => const BackendSetupScreen(),
+    ),
     GoRoute(
       name: 'onboarding',
       path: '/onboarding',