/// <summary>
/// Initializes a new instance of the <see cref="PurchaseMenu"/> class.
/// constructor for a purchase menu
/// </summary>
/// <param name="vm">vending machine using this menu</param>
/// <param name="mm">the main menu creating this purchase menu</param>
public PurchaseMenu(VendingMachine vm, MainMenu mm)
{
this.VM = vm;
this.MM = mm;
}
public void Purchase(string slot, VendingMachine vendingMachine, List <VendingMachineItem> customer, MainMenu mainmenu)
{
VendingMachineItem vmi = vendingMachine.GetItemAtSlot(slot);
// check if item is in stock - if not, return "out of stock"
if (vendingMachine.GetQuantityRemaining(slot) == 0 || vmi == null)
{
Console.WriteLine();
Console.Write("SOLD OUT!");
mainmenu.ErrorBuzz();
Console.WriteLine();
}
// check if user has enough money - if not return "insufficient funds"
if (Balance < GetItemAtSlot(slot).Price)
{
Console.Clear();
Console.WriteLine();
Console.Write("INSUFFICIENT FUNDS!");
mainmenu.ErrorBuzz();
Console.WriteLine();
}
else
{
Console.WriteLine();
// return what item has been purchased
Console.WriteLine($"Purchased {vendingMachine.GetItemAtSlot(slot).ItemName}");
// subtract price of item from balance
Balance -= (GetItemAtSlot(slot).Price);
// add item to customer bin ( list )
customer.Add(vendingMachine.GetItemAtSlot(slot));
// remove purchased item from inventory
Inventory[slot].RemoveAt(0);
}
}