public void BuyItem(int userSelection)
{
string purchase = ui.DisplayItem(se.Stock, userSelection);
if (se.StringIntValidator(purchase) == true)
{
string purchaseName = se.Stock[userSelection - 1].Name;
int purchaseQuantity = se.StringToInt(purchase);
double amount = se.PurchaseQuantity(purchaseQuantity, purchaseName);
double purchasePrice = se.CalculatePurchasePrice(purchaseQuantity, se.Stock[userSelection - 1]);
FinalizePurchase(purchasePrice, amount, userSelection, purchaseQuantity, purchaseName);
}
else
{
Console.WriteLine("Please enter valid selection");
BuyItem(userSelection);
}
}
