public string BalanceEnquiry(long Pin)
{
bool isPinValid;
IPinValidationService pinValidationService = new IPinValidationService();
//Verify if the entered PIN number is valid
isPinValid = pinValidationService.ValidatePin(Pin);
if (isPinValid)
{
return("Account Balance =" + _account.getAccountBalance()); //return Account balance if entered PIN is valid
}
else
{
return("ACCOUNT_ERR" + "401: Unauthorized"); //return 401 (Unauthorized) error code, if the entered PIN is invalid
}
}
//This method performs the withdrawal transaction based on the Withdrawal amount, ATM Balance and PIN number provided
public string WithdrawAmount(long Pin, double WithdrawalAmount, double ATMBalance)
{
//IPinValidationService constructor call
IPinValidationService pinValidationService = new IPinValidationService();
//Verifying the entered PIN number is correct
if (pinValidationService.ValidatePin(Pin))
{
//Verify if the Withdrawal amount entered is less than or equal to the sum of Balance and Overdraft, proceed
if (WithdrawalAmount <= (account.getAccountBalance() + account.getOverDraft()))
{
//Verify if the Withdrawal amount is less than or equal to the available ATM Balance
if (WithdrawalAmount <= ATMBalance)
{
account.setAccountBalance(account.getAccountBalance() - WithdrawalAmount);
return("Current Account Balance = " + account.getAccountBalance());
}
else
{
//return error code 412 (one or more conditions failed) along with ATM_ERR, if the ATM does not have enough balance
return("ATM_ERR; status code: status code: 412");
}
}
else
{ //return error code 412 along with FUNDS_ERR: if adequate funds are not available
return("FUNDS_ERR; status code: 412");
}
}
else
{
//return error code 401 (Unauthorized) if the PIN number entered is incorrect
return("ACCOUNT_ERR" + "401: Unauthorized");
}
}