first week launch

walkguide-mobile/walkguide_app/lib/core/api_service.dart

@@ -0,0 +1,28 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart'; // Wajib import ini
+
+class ApiService {
+  static String get baseUrl {
+    if (kIsWeb) {
+      // Jika di Chrome/Web, tembak localhost langsung
+      return 'http://localhost:8080/api';
+    } else {
+      // Jika di Emulator Android, tembak IP khusus 10.0.2.2
+      return 'http://10.0.2.2:8080/api';
+    }
+  }
+
+  final Dio _dio = Dio(BaseOptions(
+    baseUrl: baseUrl,
+    connectTimeout: const Duration(seconds: 5),
+    // Penting buat Web agar tidak kena error CORS di sisi Client
+    headers: {
+      'Content-Type': 'application/json',
+      'Accept': 'application/json',
+    },
+  ));
+
+  Future<Response> post(String path, Map<String, dynamic> data) async {
+    return await _dio.post(path, data: data);
+  }
+}

walkguide-mobile/walkguide_app/lib/core/failure.dart

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+abstract class Failure {
+  final String message;
+  Failure(this.message);
+}
+
+class ServerFailure extends Failure {
+  ServerFailure(super.message);
+}

walkguide-mobile/walkguide_app/lib/core/secure_storage.dart

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+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+
+class SecureStorage {
+  final _storage = const FlutterSecureStorage();
+
+  Future<void> saveToken(String token) async {
+    await _storage.write(key: 'jwt_token', value: token);
+  }
+
+  Future<String?> getToken() async {
+    return await _storage.read(key: 'jwt_token');
+  }
+
+  Future<void> deleteToken() async {
+    await _storage.delete(key: 'jwt_token');
+  }
+}