4. ubah login_screen jadi hook consumer widget

lib/main.dart

@@ -1,9 +1,11 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../app/route.dart';
-import '../test_map.dart';
+// import '../test_map.dart';
 
-void main() {
-  runApp(const MyApp());
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  runApp(const ProviderScope(child: MyApp()));
 }
 
 class MyApp extends StatelessWidget {

lib/provider/google_login_provider.dart

@@ -0,0 +1,13 @@
+import 'package:google_sign_in/google_sign_in.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+final googleSignInProvider = StateProvider<GoogleSignIn>((ref) {
+  return GoogleSignIn(
+    scopes: [
+      'email',
+      'https://www.googleapis.com/auth/contacts.readonly',
+    ],
+  );
+});
+
+final currentUserProvider = StateProvider<GoogleSignInAccount?>((ref) => null);

lib/screen/login/login_screen.dart

@@ -1,48 +1,44 @@
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:google_sign_in/google_sign_in.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
 
 import '../../app/constant.dart';
+import '../../provider/google_login_provider.dart';
 
-class LoginScreen extends StatefulWidget {
+class LoginScreen extends HookConsumerWidget {
   const LoginScreen({super.key});
 
   @override
-  State<LoginScreen> createState() => _LoginScreenState();
-}
+  Widget build(BuildContext context, WidgetRef ref) {
+    
+    // inisialisasi
+    // ref.watch itu sama spt memantau state terus menerus
+    // ref.read itu memantau namun hny 1x saja
+    GoogleSignInAccount? currentUser = ref.watch(currentUserProvider);
+    final googleSignIn = ref.watch(googleSignInProvider);
 
-class _LoginScreenState extends State<LoginScreen> {
-  GoogleSignInAccount? _currentUser;
-  final GoogleSignIn _googleSignIn = GoogleSignIn(
-    scopes: [
-      'email',
-      'https://www.googleapis.com/auth/contacts.readonly',
-    ],
-  );
-
-  @override
-  void initState() {
-    _googleSignIn.onCurrentUserChanged.listen((account) {
-      setState(() {
-        _currentUser = account;
+    useEffect(() {
+      googleSignIn.onCurrentUserChanged.listen((account) {
+        // untuk update value ke provider google_login_provider yaitu currentUserProvider
+        ref.read(currentUserProvider.notifier).update((state) => account);
       });
-    });
-    _googleSignIn.signInSilently();
-    super.initState();
-  }
+      googleSignIn.signInSilently();
+      return (){};
+    }, const []);
 
-  Future<void> _handleSignIn() async {
-    try {
-      await _googleSignIn.signIn();
-    } catch (error) {
-      if (kDebugMode) {
-        print(error);
+    // fungsi untuk sync ke google mail
+    Future<void> handleSignIn() async {
+      try {
+        await googleSignIn.signIn();
+      } catch (error) {
+        if (kDebugMode) {
+          print(error);
+        }
       }
     }
-  }
 
-  @override
-  Widget build(BuildContext context) {
     return Scaffold(
       body: SafeArea(
         child: SingleChildScrollView(
@@ -51,22 +47,22 @@ class _LoginScreenState extends State<LoginScreen> {
               SizedBox(
                 height: Constant.getActualYPhone(context: context, y: 100),
               ),
-              _currentUser != null
+              (currentUser != null) 
                   ? Container(
                       child: ListTile(
                         leading: GoogleUserCircleAvatar(
-                          identity: _currentUser!,
+                          identity: currentUser,
                         ),
                         title: Text(
-                          _currentUser!.displayName ?? "",
+                          currentUser.displayName ?? "",
                         ),
                         subtitle: Text(
-                          _currentUser!.email,
+                          currentUser.email,
                         ),
                         trailing: IconButton(
                           icon: Icon(Icons.logout_outlined),
                           onPressed: () async {
-                            await _googleSignIn.disconnect();
+                            await googleSignIn.disconnect();
                           },
                         ),
                       ),
@@ -157,7 +153,7 @@ class _LoginScreenState extends State<LoginScreen> {
                   height: Constant.getActualYPhone(context: context, y: 48),
                   child: ElevatedButton(
                     onPressed: () async {
-                      await _handleSignIn();
+                      await handleSignIn();
                     },
                     child: Row(
                       mainAxisAlignment: MainAxisAlignment.center,