feat: Implement Google Sign-In functionality and update user profile management

ios/Runner/Info.plist

@@ -49,5 +49,7 @@
 	<string>We need your location to show it on the map.</string>
 	<key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
 	<string>We need your location to show it on the map even in background.</string>
+	<key>GIDClientID</key>
+	<string>521527250907-3i1qe2656eojs8k9hjdi573j09i9p41m.apps.googleusercontent.com</string>
 </dict>
 </plist>

lib/components/profile/profile_content.dart

@@ -47,8 +47,9 @@ class ProfileContent extends StatelessWidget {
                       radius: 40,
                       backgroundColor: Theme.of(context).colorScheme.primary,
                       child: Text(
-                        user.prenom[0].toUpperCase() +
-                            user.nom[0].toUpperCase(),
+                        user.prenom.isNotEmpty
+                            ? user.prenom[0].toUpperCase()
+                            : 'U',
                         style: TextStyle(
                           fontSize: 24,
                           fontWeight: FontWeight.bold,

lib/pages/login.dart

@@ -67,6 +67,57 @@ class _LoginPageState extends State<LoginPage> {
     }
   }
 
+  Future<void> _signInWithGoogle() async {
+    setState(() {
+      _isLoading = true;
+    });
+
+    try {
+      final userCredential = await _authService.signInWithGoogle();
+      
+      if (mounted && userCredential.user != null) {
+        final user = userCredential.user!;
+        final userProvider = Provider.of<UserProvider>(context, listen: false);
+        
+        // Récupérer les données utilisateur depuis Firestore
+        final userData = await userProvider.getUserData(user.uid);
+        
+        if (userData != null) {
+          // L'utilisateur existe déjà
+          userProvider.setCurrentUser(userData);
+          Navigator.pushReplacementNamed(context, '/home');
+        } else {
+          // L'utilisateur n'existe pas, créer son profil
+          final newUserData = {
+            'uid': user.uid,
+            'email': user.email ?? '',
+            'name': user.displayName ?? 'Utilisateur',
+          };
+          
+          // Créer le profil utilisateur dans Firestore
+          final createdUser = await userProvider.createUser(newUserData);
+          
+          if (createdUser != null) {
+            userProvider.setCurrentUser(createdUser);
+            Navigator.pushReplacementNamed(context, '/home');
+          } else {
+            _showErrorMessage('Erreur lors de la création du profil utilisateur');
+          }
+        }
+      }
+    } catch (e) {
+      if (mounted) {
+        _showErrorMessage('Erreur lors de la connexion avec Google: ${e.toString()}');
+      }
+    } finally {
+      if (mounted) {
+        setState(() {
+          _isLoading = false;
+        });
+      }
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -215,12 +266,7 @@ class _LoginPageState extends State<LoginPage> {
                         children: [
                           // GOOGLE
                           GestureDetector(
-                            onTap: () {
-                              // TODO: Implémenter la connexion Google
-                              _showErrorMessage(
-                                'Connexion Google non implémentée',
-                              );
-                            },
+                            onTap: _isLoading ? null : _signInWithGoogle,
                             child: Container(
                               width: 50,
                               height: 50,

lib/providers/user_provider.dart

@@ -66,6 +66,27 @@ class UserProvider extends ChangeNotifier {
     }
   }
 
+  // Méthode pour créer un nouvel utilisateur dans Firestore
+  Future<User?> createUser(Map<String, dynamic> userData) async {
+    try {
+      // Structurer les données pour que tous les utilisateurs aient le même format
+      final userDoc = {
+        'id': userData['uid'],
+        'email': userData['email'] ?? '',
+        'nom': '', // Nom vide pour tous les utilisateurs
+        'prenom': userData['name'] ?? userData['nom'] ?? 'Utilisateur', // Nom complet dans prenom
+      };
+
+      await _firestore.collection('users').doc(userData['uid']).set(userDoc);
+      
+      // Retourner l'objet User créé
+      return User.fromMap({...userDoc, 'id': userData['uid']});
+    } catch (e) {
+      print('Erreur lors de la création de l\'utilisateur: $e');
+      return null;
+    }
+  }
+
   // Initialiser l'utilisateur connecté
   Future<void> initializeUser() async {
     firebase_auth.User? firebaseUser = _authService.currentUser;

lib/services/auth_service.dart

@@ -1,4 +1,6 @@
 import 'package:firebase_auth/firebase_auth.dart';
+import 'package:google_sign_in/google_sign_in.dart';
+import 'package:google_sign_in_platform_interface/google_sign_in_platform_interface.dart';
 
 class AuthService {
   final FirebaseAuth firebaseAuth = FirebaseAuth.instance;
@@ -65,4 +67,38 @@ class AuthService {
     await currentUser!.updatePassword(newPassword);
   }
 
+  Future<void> ensureInitialized(){
+    return GoogleSignInPlatform.instance.init(const InitParameters());
+  }
+
+  Future<UserCredential> signInWithGoogle() async {
+    try {
+      await ensureInitialized();
+      final AuthenticationResults result = await GoogleSignInPlatform.instance.authenticate(const AuthenticateParameters());
+      final String? idToken = result.authenticationTokens.idToken;
+      if (idToken == null) {
+        throw FirebaseAuthException(
+          code: 'ERROR_MISSING_GOOGLE_ID_TOKEN',
+          message: 'Missing Google ID Token',
+        );
+      } else {
+        final OAuthCredential credential = GoogleAuthProvider.credential(idToken: idToken);
+        UserCredential userCredential = await firebaseAuth.signInWithCredential(credential);
+        
+        // Retourner le UserCredential au lieu de void
+        return userCredential;
+      }
+
+    } on GoogleSignInException catch (e) {
+      print('Erreur lors de l\'initialisation de Google Sign-In: $e');
+      rethrow;
+    } on FirebaseAuthException catch (e) {
+      print('Erreur Firebase lors de l\'initialisation de Google Sign-In: $e');
+      rethrow;
+    } catch (e) {
+      print('Erreur inconnue lors de l\'initialisation de Google Sign-In: $e');
+      rethrow;
+    }
+  }
+  
 }

pubspec.lock

@@ -200,6 +200,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  google_identity_services_web:
+    dependency: transitive
+    description:
+      name: google_identity_services_web
+      sha256: "5d187c46dc59e02646e10fe82665fc3884a9b71bc1c90c2b8b749316d33ee454"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.3+1"
   google_maps:
     dependency: transitive
     description:
@@ -248,6 +256,46 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.5.14+2"
+  google_sign_in:
+    dependency: "direct main"
+    description:
+      name: google_sign_in
+      sha256: "521031b65853b4409b8213c0387d57edaad7e2a949ce6dea0d8b2afc9cb29763"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.2.0"
+  google_sign_in_android:
+    dependency: transitive
+    description:
+      name: google_sign_in_android
+      sha256: "7abdfa0088dc8f7d08eb3dbb1665a72bcb5b37afa256c9ec5d21e1e2d7503e5c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.2.0"
+  google_sign_in_ios:
+    dependency: transitive
+    description:
+      name: google_sign_in_ios
+      sha256: d9d80f953a244a099a40df1ff6aadc10ee375e6a098bbd5d55be332ce26db18c
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.2.1"
+  google_sign_in_platform_interface:
+    dependency: transitive
+    description:
+      name: google_sign_in_platform_interface
+      sha256: "7f59208c42b415a3cca203571128d6f84f885fead2d5b53eb65a9e27f2965bb5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.0"
+  google_sign_in_web:
+    dependency: transitive
+    description:
+      name: google_sign_in_web
+      sha256: "2fc1f941e6443b2d6984f4056a727a3eaeab15d8ee99ba7125d79029be75a1da"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   html:
     dependency: transitive
     description:

pubspec.yaml

@@ -43,6 +43,7 @@ dependencies:
   firebase_core: ^4.1.1
   firebase_auth: ^6.1.0
   cloud_firestore: ^6.0.2
+  google_sign_in: ^7.2.0
 
 dev_dependencies:
   flutter_test: