Initial commit: family safety frontend project setup

lib/services/auth_service.dart

@@ -0,0 +1,35 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+import '../config/api.dart';
+
+class AuthService {
+  final http.Client _client;
+  
+  AuthService({http.Client? client}) : _client = client ?? http.Client();
+
+  Future<String> login(String login, String password) async {
+    final response = await _client.post(
+      Uri.parse(ApiConfig.loginUrl),
+      headers: {'Content-Type': 'application/json'},
+      body: jsonEncode({'login': login, 'password': password}),
+    );
+    
+    if (response.statusCode == 200) {
+      return response.body;
+    } else {
+      throw Exception('Invalid credentials');
+    }
+  }
+
+  Future<void> register(String login, String password) async {
+    final response = await _client.post(
+      Uri.parse(ApiConfig.regUrl),
+      headers: {'Content-Type': 'application/json'},
+      body: jsonEncode({'login': login, 'password': password}),
+    );
+    
+    if (response.statusCode != 201) {
+      throw Exception('Registration failed');
+    }
+  }
+}