public static ProductBand Instance()
{
if (_instance == null)
{
lock (syncLock)
{
if (_instance == null)
{
_instance = new ProductBand();
}
}
}
return(_instance);
}
public decimal Pay(IPayment payment, int numberOfMoney, string productName)
{
ContainableItem containableItem = ProductBand.Instance().GetByName(productName);
if (_internalAccountant.IsEnoughMoney(containableItem,
_internalAccountant.TotalAmount(payment, numberOfMoney)))
{
Notify(containableItem);
return payment.GetChange();
//if (payment is Coin)
//{
// return _internalAccountant.CalculateChange(containableItem.Product.Price, payment, numberOfMoney);
//}
//if (payment is CreditCard)
//{
// payment.Amount -= containableItem.Product.Price;
// return 0;
//}
//if (payment is Banknote)
// return 0;
}
throw new ArgumentException("You need to enter more money.");
}
public void Dispense(ContainableItem containableItem)
{
ContainableItem product = ProductBand.Instance().GetByName(containableItem.Product.Name);
ProductBand.Instance().Remove(product);
}
