create-account.dart

_createAccount() async {
      final status = await FirebaseAuthHelper().createAccount(
          email: email, pass: password);
      if (status == AuthResultStatus.successful) {
        // Navigate to success page
        } else {
        final errorMsg = AuthExceptionHandler.generateExceptionMessage(
            status);
        _showAlertDialog(errorMsg);
      }
  }

login.dart

_login() async {
      final status = await FirebaseAuthHelper().login(
          email: email, pass: password);
      if (status == AuthResultStatus.successful) {
        // Navigate to success page
        } else {
        final errorMsg = AuthExceptionHandler.generateExceptionMessage(
            status);
        _showAlertDialog(errorMsg);
      }
  }