Connection with google done ✅

Sources/justMUSIC/lib/exceptions/user_exception.dart

@@ -0,0 +1,6 @@
+class UserException implements Exception {
+  String code;
+  String description;
+
+  UserException(this.code,this.description);
+}

Sources/justMUSIC/lib/screens/login_screen.dart

@@ -1,4 +1,3 @@
-import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -10,6 +9,7 @@ import 'package:justmusic/main.dart';
 import 'package:justmusic/values/constants.dart';
 
 import '../components/login_button.dart';
+import '../exceptions/user_exception.dart';
 
 class LoginScreen extends StatefulWidget {
   const LoginScreen({Key? key}) : super(key: key);
@@ -33,7 +33,7 @@ class _LoginScreenState extends State<LoginScreen> {
         ScaffoldMessenger.of(context).showSnackBar(
           SnackBar(
             content: Text(
-              e.toString() ?? "",
+              e.toString(),
               style: GoogleFonts.plusJakartaSans(color: Colors.white, fontWeight: FontWeight.w400, fontSize: 20.h),
             ),
             backgroundColor: Colors.red,
@@ -43,6 +43,18 @@ class _LoginScreenState extends State<LoginScreen> {
     }
   }
 
+  signInWithGoogle() async {
+    try {
+      await MyApp.userViewModel.signInWithGoogle();
+    } on UserException catch (e) {
+      if (e.code == 'user-created') {
+        Navigator.pushNamed(context, '/explanation');
+      } else if (e.code == 'user-already-exist') {
+        Navigator.pushNamed(context, '/feed');
+      }
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return GestureDetector(
@@ -269,7 +281,7 @@ class _LoginScreenState extends State<LoginScreen> {
                                                 SignInButton(
                                                   Buttons.Google,
                                                   text: "Login with Google",
-                                                  onPressed: () {},
+                                                  onPressed: signInWithGoogle,
                                                 ),
                                               ],
                                             ),

Sources/justMUSIC/lib/screens/profile_screen.dart

@@ -1,4 +1,3 @@
-import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
@@ -21,8 +20,7 @@ class _ProfileScreenState extends State<ProfileScreen> {
   @override
   Widget build(BuildContext context) {
     Future<void> logout() async {
-      print("cc");
-      await FirebaseAuth.instance.signOut();
+      await MyApp.userViewModel.logout();
       Navigator.pushNamed(context, '/welcome');
     }
 

Sources/justMUSIC/lib/screens/registration_screen.dart

@@ -7,6 +7,7 @@ import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:flutter_signin_button/button_list.dart';
 import 'package:flutter_signin_button/button_view.dart';
 import 'package:google_fonts/google_fonts.dart';
+import 'package:justmusic/exceptions/user_exception.dart';
 import 'package:justmusic/values/constants.dart';
 
 import '../components/login_button.dart';
@@ -37,7 +38,7 @@ class _RegistrationScreenState extends State<RegistrationScreen> {
         ScaffoldMessenger.of(context).showSnackBar(
           SnackBar(
             content: Text(
-              e.toString() ?? "",
+              e.toString(),
               style: GoogleFonts.plusJakartaSans(
                   color: Colors.white,
                   fontWeight: FontWeight.w400,
@@ -51,8 +52,15 @@ class _RegistrationScreenState extends State<RegistrationScreen> {
   }
 
   signInWithGoogle() async {
+    try {
       await MyApp.userViewModel.signInWithGoogle();
-    //Navigator.pushNamed(context, '/explanation');
+    } on UserException catch (e) {
+      if (e.code == 'user-created') {
+        Navigator.pushNamed(context, '/explanation');
+      } else if (e.code == 'user-already-exist') {
+        Navigator.pushNamed(context, '/feed');
+      }
+    }
   }
 
   @override

Sources/justMUSIC/lib/services/AuthService.dart

@@ -3,21 +3,17 @@ import 'package:firebase_auth/firebase_auth.dart';
 import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/foundation.dart';
 import 'package:google_sign_in/google_sign_in.dart';
+import 'package:justmusic/exceptions/user_exception.dart';
 import '../main.dart';
 
 class AuthService {
-  register(String pseudo, String email, String password) async {
-    try {
+  Future<void> addUserToFirestore(
+      UserCredential userCredential, String pseudo, String email) async {
     var token;
-      final data = await FirebaseAuth.instance.createUserWithEmailAndPassword(
-        email: email,
-        password: password,
-      );
-
-      if (kIsWeb) {
-        token = "empty";
-      } else {
+    if (!kIsWeb) {
       token = await FirebaseMessaging.instance.getToken();
+    } else {
+      token = "empty";
     }
 
     String uniqueId = await generateUniqueId(pseudo);
@@ -35,12 +31,24 @@ class AuthService {
           "https://firebasestorage.googleapis.com/v0/b/justmusic-435d5.appspot.com/o/justMusicDefaultImage.png?alt=media&token=020d0fcb-b7df-4d4d-b380-e99597293fcc"
     };
 
-      MyApp.db
+    try {
+      await MyApp.db
           .collection("users")
-          .doc(data.user?.uid)
-          .set(user)
-          .then((value) => print("User Added"))
-          .catchError((error) => print("Failed to add user: $error"));
+          .doc(userCredential.user?.uid)
+          .set(user);
+      print("User Added");
+    } catch (error) {
+      print("Failed to add user: $error");
+    }
+  }
+
+  Future<void> register(String pseudo, String email, String password) async {
+    try {
+      final data = await FirebaseAuth.instance.createUserWithEmailAndPassword(
+        email: email,
+        password: password,
+      );
+      await addUserToFirestore(data, pseudo, email);
     } on FirebaseAuthException catch (e) {
       if (e.code == 'weak-password') {
         throw ('Mot de passe trop court');
@@ -55,15 +63,26 @@ class AuthService {
 
   signInWithGoogle() async {
     final GoogleSignInAccount? gUser = await GoogleSignIn().signIn();
-
     final GoogleSignInAuthentication gAuth = await gUser!.authentication;
-
     final credential = GoogleAuthProvider.credential(
       accessToken: gAuth.accessToken,
       idToken: gAuth.idToken,
     );
 
-    return await FirebaseAuth.instance.signInWithCredential(credential);
+    final userCredential =
+        await FirebaseAuth.instance.signInWithCredential(credential);
+    final user =
+        await MyApp.db.collection("users").doc(userCredential.user?.uid).get();
+
+    if (!user.exists) {
+      await addUserToFirestore(
+          userCredential,
+          userCredential.user?.displayName ?? "user",
+          userCredential.user?.email ?? "");
+      throw UserException("user-created", "L'utilisateur vien d'être créé");
+    }
+
+    throw UserException("user-already-exist", "L'utilisateur existe déjà");
   }
 
   Future<String> generateUniqueId(String pseudo) async {
@@ -100,8 +119,12 @@ class AuthService {
     }
   }
 
-  void signOut() async {
+  signOut() async {
+    final GoogleSignIn googleSignIn = GoogleSignIn();
     await FirebaseAuth.instance.signOut();
+    if (await googleSignIn.isSignedIn()) {
+      await googleSignIn.signOut();
+    }
   }
 
   Future<void> delete() async {

Sources/justMUSIC/lib/view_model/UserViewModel.dart

@@ -80,7 +80,13 @@ class UserViewModel {
   }
 
   signInWithGoogle() async {
+    try {
       await _authService.signInWithGoogle();
+      await updateUserCurrent();
+    } catch (e) {
+      print(e);
+      rethrow;
+    }
   }
 
   Future<List<User>> getUsersByUniqueId(String uniqueId) async {
@@ -105,12 +111,12 @@ class UserViewModel {
     }
   }
 
-  logout() {
-    _authService.signOut();
+  logout() async {
+    await _authService.signOut();
   }
 
-  delete() {
-    _authService.delete();
+  delete() async {
+    await _authService.delete();
   }
 
   bool isFriend(String id) {