/// <summary>
/// Returns the deposited coins to the customer
/// </summary>
public void ReturnCoins()
{
CoinReturn = new List <Coin>(CurrentTransaction);
CurrentTransaction.Clear();
_display.SetMessage("INSERT COIN");
}
/// <summary>
/// Allows the customer to select and purchase a product, assuming they have enough money and it is in stock
/// </summary>
/// <param name="productType"></param>
public void SelectProduct(ProductType productType)
{
//ensure the product exists
var selectedProduct = Products.Find(p => p.ProductType == productType);
if (selectedProduct != null)
{
if (CurrentTransactionBalance >= selectedProduct.SellPrice && selectedProduct.StockLevel > 0)
{
//too much money, so issue some change
if (CurrentTransactionBalance >= selectedProduct.SellPrice)
{
IssueChange(CurrentTransactionBalance - selectedProduct.SellPrice);
}
//dispense the product
selectedProduct.StockLevel--;
MachineFloat.InsertRange(0, CurrentTransaction);
CurrentTransaction.Clear();
_display.SetMessage("THANK YOU");
ProductDispensed = true;
}
else if (CurrentTransactionBalance >= selectedProduct.SellPrice && selectedProduct.StockLevel == 0)
{
//no stock so display the sold out message
_display.SetMessage("SOLD OUT");
}
else
{
//customer hasn't entered enough money, so remind them of the price
_display.SetMessage($"PRICE {selectedProduct.SellPrice.ToString("N2")}");
ProductDispensed = false;
}
}
}