public override void ApplyOffer(ShoppingCart.ShoppingCart cart, List <BillDiscount> billDiscountResult)
{
var itemQuantity = cart.GetQuantity(_offerItem.name);
var targetQuantity = cart.GetQuantity(_offerItem.discountItem.name);
if (itemQuantity > 0 && targetQuantity > 0 && itemQuantity >= _offerItem.quantity)
{
BillDiscount billDiscount =
ProcessDiscount((long)Math.Truncate((double)itemQuantity / _offerItem.quantity));
billDiscountResult.Add(billDiscount);
}
if (IsHasNextHandler())
{
nextHandler.ApplyOffer(cart, billDiscountResult);
}
}
public void print(string writePath, Bill bill, ShoppingCart.ShoppingCart cart, PriceList priceList)
{
var header = "\tSHOPPING BILL";
var line = "--------------------------------";
var discountsLine = "DISCOUNTS:";
var totalLine = "TOTAL:";
var subtotal = $"{"Subtotal:",15} {Math.Round(bill.Subtotal, 2),5}$";
var total = $"{"Total:",15} {Math.Round(bill.Total, 2),5}$";
var items = cart.GetItems();
var discountItems = bill.BillDiscounts;
var s = $"{"[Item]",5} {"[Qty]",8} {"[Rate]",7} {"[Amount]",7}\n";
foreach (var t in items)
{
s +=
$"{t,6} {cart.GetQuantity(t),6} {Math.Round(priceList.GetPriceOf(t), 2),8}$ {Math.Round(priceList.GetPriceOf(t) * cart.GetQuantity(t), 2),5}$\n";
}
string str = null;
str = discountItems.Count > 0
? discountItems.Aggregate(str,
(current, t) =>
current +
$"{t.GetDiscountName()} - {t.GetDiscountPercent(),3}% off:{t.GetDiscountValue().ToString(),4}$\n")
: "No Offers";
Directory.CreateDirectory(writePath.Split(new char[] { '\\' })[0]);
try
{
using (var sw = new StreamWriter(writePath, false, Encoding.Default))
{
sw.WriteLine(line);
sw.WriteLine(header);
sw.WriteLine(line);
sw.WriteLine(s);
sw.WriteLine(line);
sw.WriteLine(discountsLine);
sw.WriteLine(line);
sw.WriteLine(str);
sw.WriteLine(line);
sw.WriteLine(totalLine);
sw.WriteLine(line);
sw.WriteLine(subtotal);
sw.WriteLine(total);
sw.WriteLine(line);
}
Console.WriteLine("Bill has been printed.");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
private double CalculateSubTotal(ShoppingCart.ShoppingCart shoppingCart)
{
double subtotal = 0;
foreach (var item in shoppingCart.GetItems())
{
subtotal += (_priceList.GetPriceOf(item) * shoppingCart.GetQuantity(item));
}
return(subtotal);
}