public bool Withdraw(IReadOnlyCashTransaction cashTransaction)
{
bool isValid = true;
foreach (var key in _billInventory.Keys)
{
isValid = isValid && (_billInventory[key] >= cashTransaction.BillCount(key));
if (isValid == false)
{
break;
}
}
// Only set the inventory if the withdraw can happen.
if (isValid == true)
{
foreach (var bill in UnitedStatesTender.GetAllDefinedTenders())
{
if (_billInventory.ContainsKey(bill))
{
_billInventory[bill] = _billInventory[bill] - cashTransaction.BillCount(bill);
}
}
}
return(isValid);
}
public static WithdrawalResult CreateFailureResult(string failureReason, IReadOnlyCashTransaction transactionDetails)
{
if (string.IsNullOrWhiteSpace(failureReason))
{
throw new ArgumentException("Cannont be blank or empty", nameof(failureReason));
}
return(new WithdrawalResult(false, failureReason, transactionDetails));
}
public void ResetInventory(IReadOnlyCashTransaction restock)
{
foreach (var key in UnitedStatesTender.GetAllDefinedTenders())
{
if (_billInventory.ContainsKey(key))
{
_billInventory[key] = restock.BillCount(key);
}
}
}
protected void DisplayBalance(IReadOnlyCashTransaction balance)
{
Console.WriteLine("Machine Balance:");
var ordered = UnitedStatesTender.GetAllDefinedTenders().OrderByDescending(tender => tender.Value);
foreach (var bill in ordered)
{
Console.WriteLine($"${bill.Value} - {balance.BillCount(bill)}");
}
}
public static WithdrawalResult CreateSuccessResult(IReadOnlyCashTransaction transactionDetails)
{
return(new WithdrawalResult(true, string.Empty, transactionDetails));
}
private WithdrawalResult(bool isSuccess, string failureReason, IReadOnlyCashTransaction transactionDetails)
{
_isSuccess = isSuccess;
_failureReason = failureReason;
_details = transactionDetails;
}
public void Restock(IReadOnlyCashTransaction restock)
{
_atmInventory.ResetInventory(restock);
}
