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 void ResetInventory(IReadOnlyCashTransaction restock)
{
foreach (var key in UnitedStatesTender.GetAllDefinedTenders())
{
if (_billInventory.ContainsKey(key))
{
_billInventory[key] = restock.BillCount(key);
}
}
}
public AtmInventory()
{
_billInventory = new Dictionary <UnitedStatesTender, int>();
var allTenders = UnitedStatesTender.GetAllDefinedTenders();
foreach (var tender in allTenders)
{
_billInventory.Add(tender, 0);
}
}