// update cart item quantity without prompt
private void updateCartItem(int id, int qty)
{
CartItm aCartItem = new CartItm();
aCartItem.id = cart[id].id;
aCartItem.qty = qty;
cart[id] = aCartItem;
}
// update item in cart dialogue
private void updateCartItem()
{
string inpVal;
int selVal, selQty;
Products.Product prodData;
Console.Clear();
Console.WriteLine("Cart Editor");
Console.WriteLine("Current items and quantities in shopping cart.");
listItems();
Console.WriteLine("");
Console.WriteLine("Please select a cart item you would like to edit by entering its id value : (x to cancel)");
inpVal = Console.ReadLine();
int.TryParse(inpVal, out selVal);
while (inpVal.ToUpper() != "X" && (selVal < 1 || selVal > cart.Count))
{
Console.WriteLine("Your selected value did not match any available product options. Please try again: ");
inpVal = Console.ReadLine();
int.TryParse(inpVal, out selVal);
}
if (inpVal.ToUpper() != "X")
{
// decrement selected id val to match list id
--selVal;
// load product data
prodData = Products.getProduct(selVal);
Console.Write("Please enter a new quantity for {0} : ", prodData.name);
inpVal = Console.ReadLine();
int.TryParse(inpVal, out selQty);
while (selQty < 1 || selQty > prodData.qty)
{
Console.WriteLine("Entered quantity appears to be invalid. Please try again: ");
inpVal = Console.ReadLine();
int.TryParse(inpVal, out selQty);
}
// reset cart item quantity
CartItm aCartItem = new CartItm();
aCartItem.id = cart[selVal].id;
aCartItem.qty = selQty;
cart[selVal] = aCartItem;
}
}
// add product to users cart
private void addToCart(int id)
{
string inpVal;
int qty;
Products.Product prodData;
// update to valid id
--id;
Console.Clear();
// load product data
prodData = Products.getProduct(id);
// new item structure
CartItm newCartItm = new CartItm();
newCartItm.id = id;
// promp user for quantity
Console.Write("How many should I add to your cart? ");
inpVal = Console.ReadLine();
int.TryParse(inpVal, out qty);
// check user inserted quantity for validity
while (qty <= 0 && qty < prodData.qty)
{
Console.Write("You did not enter a valid quantity. Please try again: ");
inpVal = Console.ReadLine();
int.TryParse(inpVal, out qty);
}
newCartItm.qty = qty;
// check for item already in cart
for (int i = 0; i < cart.Count; ++i)
{
if (cart[i].id == id)
{
updateCartItem(id, (cart[i].qty + qty));
return;
}
}
// save item to cart
cart.Add(newCartItm);
}
