Add routes navigation login and admin dashboard

frontend/lib/services/api/api_config.dart

@@ -1,6 +1,6 @@
 class ApiConfig {
-  // static const String baseUrl = 'https://ynov.ptits-pas.fr/api/v1';
-  static const String baseUrl = 'http://localhost:3000/api/v1';
+  // static const String baseUrl = 'http://localhost:3000/api/v1/';
+  static const String baseUrl = 'https://ynov.ptits-pas.fr/api/v1';
 
   // Auth endpoints
   static const String login = '/auth/login';
@@ -18,4 +18,15 @@ class ApiConfig {
   static const String contracts = '/contracts';
   static const String conversations = '/conversations';
   static const String notifications = '/notifications';
+
+   // Headers
+  static Map<String, String> get headers => {
+    'Content-Type': 'application/json',
+    'Accept': 'application/json',
+  };
+
+  static Map<String, String> authHeaders(String token) => {
+    ...headers,
+    'Authorization': 'Bearer $token',
+  };
 }

frontend/lib/services/api/tokenService.dart

@@ -0,0 +1,72 @@
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class TokenService {
+  static const _storage = FlutterSecureStorage();
+  static const _tokenKey = 'access_token';
+  static const String _refreshTokenKey = 'refresh_token';
+  static const _roleKey = 'user_role';
+
+  // Stockage du token
+  static Future<void> saveToken(String token) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(_tokenKey, token);
+  }
+
+  // Stockage du refresh token
+  static Future<void> saveRefreshToken(String refreshToken) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(_refreshTokenKey, refreshToken);
+  }
+
+  // Stockage du rôle
+  static Future<void> saveRole(String role) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(_roleKey, role);
+  }
+
+  // Récupération du token
+  static Future<String?> getToken() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.getString(_tokenKey);
+  }
+
+  // Récupération du refresh token
+  static Future<String?> getRefreshToken() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.getString(_refreshTokenKey);
+  }
+
+  // Récupération du rôle
+  static Future<String?> getRole() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.getString(_roleKey);
+  }
+
+  // Suppression du token
+  static Future<void> deleteToken() async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_tokenKey);
+  }
+
+  // Suppression du refresh token
+  static Future<void> deleteRefreshToken() async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_refreshTokenKey);
+  }
+
+
+  // Suppression du rôle
+  static Future<void> deleteRole() async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_roleKey);
+  }
+
+  // Nettoyage complet
+  static Future<void> clearAll() async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_tokenKey);
+    await prefs.remove(_refreshTokenKey);
+    await prefs.remove(_roleKey);
+  }
+}

frontend/lib/services/auth_service.dart

@@ -1,46 +1,86 @@
 import 'dart:convert';
-import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:p_tits_pas/services/api/api_config.dart';
+import 'package:p_tits_pas/services/api/tokenService.dart';
 import '../models/user.dart';
 import 'package:http/http.dart' as http;
 
 
-class AuthResponse {
-  final String acessToken;
-  final String role;
-
-  AuthResponse({required this.acessToken, required this.role});
-
-  factory AuthResponse.fromJson(Map<String, dynamic> json) {
-    return AuthResponse(
-      acessToken: json['acessToken'],
-      role: json['role'],
-    );
-  }
-}
-
 class AuthService {
-  ApiConfig apiConfig = ApiConfig();
-  String baseUrl = ApiConfig.baseUrl;
-  final storage = const FlutterSecureStorage();
+  final String baseUrl = ApiConfig.baseUrl;
 
   //login
-  Future<AuthResponse> login(String email, String password) async {
-    final response = await http.post(
-      Uri.parse('$baseUrl${ApiConfig.login}'),
-      headers: {'Content-Type': 'application/json'},
-      body: jsonEncode({'email': email, 'password': password}),
-    );
+  Future<Map<String, dynamic>> login(String email, String password) async {
+    try {
+      final response = await http.post(
+        Uri.parse('$baseUrl${ApiConfig.login}'),
+        headers: ApiConfig.headers,
+        body: jsonEncode({
+          'email': email,
+          'password': password
+        }),
+      );
+      if (response.statusCode == 201) {
+        final data = jsonDecode(response.body);
 
-    if (response.statusCode == 200) {
-      final data = jsonDecode(response.body);
-      final authResponse = AuthResponse.fromJson(data);
+        await TokenService.saveToken(data['access_token']);
+        await TokenService.saveRefreshToken(data['refresh_token']);
+        final role = _extractRoleFromToken(data['access_token']);
+        await TokenService.saveRole(role);
 
-      await storage.write(key: 'access_token', value: authResponse.acessToken);
-      await storage.write(key: 'role', value: authResponse.role);
-      return authResponse;
-    } else {
-      throw Exception('Failed to login');
+        return data;
+      } else {
+        throw Exception('Failed to login: ${response.body}');
+      }
+    } catch (e) {
+      throw Exception('Failed to login: $e');
+    }
+  }
+
+  String _extractRoleFromToken(String token) {
+    try {
+      final parts = token.split('.');
+      if (parts.length != 3) return '';
+
+      final payload = parts[1];
+      final normalizedPayload = base64Url.normalize(payload);
+      final decoded = utf8.decode(base64Url.decode(normalizedPayload));
+      final Map<String, dynamic> payloadMap = jsonDecode(decoded);
+
+      return payloadMap['role'] ?? '';
+    } catch (e) {
+      print('Error extracting role from token: $e');
+      return '';
+    }
+  }
+
+  Future<void> logout() async {
+    await TokenService.clearAll();
+  }
+
+  Future<bool> isAuthenticated() async {
+    final token = await TokenService.getToken();
+    if (token == null) return false;
+
+    return !_isTokenExpired(token);
+  }
+
+  bool _isTokenExpired(String token) {
+    try {
+      final parts = token.split('.');
+      if (parts.length != 3) return true;
+
+      final payload = parts[1];
+      final normalizedPayload = base64Url.normalize(payload);
+      final decoded = utf8.decode(base64Url.decode(normalizedPayload));
+      final Map<String, dynamic> payloadMap = jsonDecode(decoded);
+
+      final exp = payloadMap['exp'];
+      if (exp == null) return true;
+
+      final expirationDate = DateTime.fromMillisecondsSinceEpoch(exp * 1000);
+      return DateTime.now().isAfter(expirationDate);
+    } catch (e) {
+      return true;
     }
   }