public double AddPurchaseTransaction(int productId)
{
_state = eTransactionState.Purchase;
ProductItem product = _db.GetProductItem(productId);
if (product.Price > _runningTotal)
{
throw new Exception("More money is required.");
}
TransactionItem transactionItem = new TransactionItem();
transactionItem.ProductId = productId;
transactionItem.SalePrice = product.Price;
_transactionItems.Add(transactionItem);
VendingOperation operation = new VendingOperation();
operation.OperationType = VendingOperation.eOperationType.PurchaseItem;
operation.Price = product.Price;
operation.RunningTotal = _runningTotal;
operation.ProductName = product.Name;
_log.LogOperation(operation);
_runningTotal -= product.Price;
return(_runningTotal);
}
public double AddFeedMoneyOperation(double amountAdded)
{
_state = eTransactionState.FeedMoney;
VendingOperation operation = new VendingOperation();
operation.OperationType = VendingOperation.eOperationType.FeedMoney;
operation.Price = amountAdded;
operation.RunningTotal = _runningTotal;
_log.LogOperation(operation);
_runningTotal += amountAdded;
return(_runningTotal);
}
public Change AddGiveChangeOperation()
{
_state = eTransactionState.Change;
double result = _runningTotal;
VendingOperation operation = new VendingOperation();
operation.OperationType = VendingOperation.eOperationType.GiveChange;
operation.RunningTotal = _runningTotal;
_log.LogOperation(operation);
_change = GetChange();
_runningTotal = 0.0;
return(_change);
}
