Google sign in and hourglass improved

lib/googleSignIn.dart

@@ -0,0 +1,34 @@
+
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:flutter/material.dart';
+import 'package:google_sign_in/google_sign_in.dart';
+
+class GoogleSignInProvider extends ChangeNotifier{
+  final googleSignIn = GoogleSignIn();
+
+  GoogleSignInAccount? _user;
+  GoogleSignInAuthentication? googleAuth;
+
+  GoogleSignInAccount get user => _user!;
+
+  Future googleLogin() async{
+    final googleUser = await googleSignIn.signIn();
+    if(googleUser==null) return;
+    _user = googleUser;
+
+    googleAuth = await googleUser.authentication;
+
+    final credential = GoogleAuthProvider.credential(
+      accessToken: googleAuth!.accessToken,
+      idToken: googleAuth!.idToken
+    );
+    print('user login\nusername:${googleUser.displayName}\nemail:${googleUser.email}\nid:${googleAuth!.idToken}');
+    print(googleAuth!.accessToken!.length);
+
+    notifyListeners();
+  }
+
+  Future logout() async{
+    await googleSignIn.disconnect();
+  }
+}