TravelMate/lib/services/auth_service.dart

import 'package:firebase_auth/firebase_auth.dart';

class AuthService {
  final FirebaseAuth firebaseAuth = FirebaseAuth.instance;

  User? get currentUser => firebaseAuth.currentUser;

  Stream<User?> get authStateChanges => firebaseAuth.authStateChanges();

  Future<UserCredential> signIn({
    required String email,
    required String password
  }) async {
    return await firebaseAuth.signInWithEmailAndPassword(
        email: email, password: password);
  }

  Future<UserCredential> createAccount({
      required String email, 
      required String password
    }) async {
    return await firebaseAuth.createUserWithEmailAndPassword(
        email: email, password: password);
  }

  Future<void> signOut() async {
    await firebaseAuth.signOut();
  }

  Future<void> resetPassword(String email) async {
    await firebaseAuth.sendPasswordResetEmail(email: email);
  }

  Future<void> updateDisplayName({
    required String displayName,
  }) async {
    await currentUser!.updateDisplayName(displayName);
  }

  Future<void> deleteAccount({
    required String password,
    required String email,
  }) async {
    // Re-authenticate the user
    AuthCredential credential =
        EmailAuthProvider.credential(email: email, password: password);
    await currentUser!.reauthenticateWithCredential(credential);

    // Delete the user
    await currentUser!.delete();
    await firebaseAuth.signOut();
  }

  Future<void> resetPasswordFromCurrentPassword({
    required String currentPassword,
    required String newPassword,
    required String email,
  }) async {
    // Re-authenticate the user
    AuthCredential credential =
        EmailAuthProvider.credential(email: email, password: currentPassword);
    await currentUser!.reauthenticateWithCredential(credential);

    // Update the password
    await currentUser!.updatePassword(newPassword);
  }
  
}