import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter_facebook_auth/flutter_facebook_auth.dart';

class FacebookSignIn {
  Future<UserCredential?> signInWithFacebook() async {
    final LoginResult result = await FacebookAuth.instance.login();
    if (result.status == LoginStatus.success) {
      // Create a credential from the access token
      final OAuthCredential credential =
          FacebookAuthProvider.credential(result.accessToken!.tokenString);
      // Once signed in, return the UserCredential
      return await FirebaseAuth.instance.signInWithCredential(credential);
    }
    return null;
  }

  Future<void> signOut() async {
    try {
      await FacebookAuth.instance.logOut();
      print('Facebook Sign Out Successful');
    } catch (e) {
      print('Error during Facebook Sign Out: $e');
    }
  }

  Future<bool> isSignedIn() async {
    final accessToken = await FacebookAuth.instance.accessToken;
    return accessToken != null;
  }
}