public bool SelectProduct(int position)
{
var stockedItem = stockItems.GetItemInformation(position);
if (stockedItem == null || stockedItem.FirstOrDefault().Value < 1)
{
messageService.ChangeVendingMessage("SOLD OUT");
return(true);
}
var itemPrice = stockedItem.FirstOrDefault().Key.Price;
if (CanProductBePurchased(itemPrice))
{
cashBox.AddCoinsToStack(currentCoins.RemoveAllCoins());
messageService.ChangeVendingMessage("THANK YOU");
return(true);
}
else
{
coinReturn.RemoveAllCoins();
}
return(true);
}
public bool AcceptCoin(Coin InsertedCoin)
{
// Return Invalid Coin
if (!InsertedCoin.IsValid)
{
coinReturn.AddCoinsToStack(InsertedCoin);
}
currentCoins.AddCoinsToStack(InsertedCoin);
return(true);
}
private bool CheckChangeCanBeGiven(decimal itemPrice)
{
var combinedResources = new CoinStack();
combinedResources.AddCoinsToStack(currentCoins.GetAllCoins());
combinedResources.AddCoinsToStack(cashBox.GetAllCoins());
var ordered = combinedResources.GetAllCoins().OrderBy(x => x.Key.CoinWorth);
foreach (var coinType in ordered)
{
var coinsAvailable = coinType.Value;
while (itemPrice >= coinType.Key.CoinWorth && coinsAvailable > 0)
{
itemPrice -= coinType.Key.CoinWorth;
coinsAvailable -= 1;
coinReturn.AddCoinsToStack(coinType.Key);
}
}
return(itemPrice == 0 ? true : false);
}