9/29/1

lib/controller/auth/facebook_login.dart

@@ -0,0 +1,30 @@
+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;
+  }
+}