public override List <IProduct> CheckForDiscount(List <IProduct> cart)
{
// filter Cart only get type(Product) and group the products by barcode
var posibleProductsForDiscount = cart.Where(product => product.GetType() == typeof(Product))
.Where(product => Barcodes.Contains(product.Barcode));
if (posibleProductsForDiscount.Count() == N)
{
string description = "discount-";
decimal cartPrice = 0m;
foreach (var product in posibleProductsForDiscount)
{
cartPrice += product.Amount;
description += product.Barcode + "-";
}
var discount = cartPrice * Percentage * -1;
DiscountProduct = new DiscountProduct(discount, description);
return(posibleProductsForDiscount.ToList());
}
return(null);
}
public override List <IProduct> CheckForDiscount(List <IProduct> cart)
{
// filter Cart only get type(Product) and group the products by barcode
var posibleProductsForDiscount = cart.Where(product => product.GetType() == typeof(Product))
.Where(product => Barcodes.Contains(product.Barcode));
var amountOfGroups = posibleProductsForDiscount.GroupBy(group => group.Barcode).Count();
if (posibleProductsForDiscount.Count() == N && amountOfGroups >= 2)
{
string description = "discount-cheapest-";
decimal cartPrice = 0m;
decimal discount = posibleProductsForDiscount.First().Amount;
foreach (var product in posibleProductsForDiscount)
{
if (product.Amount < discount)
{
discount = product.Amount;
}
cartPrice += product.Amount;
description += product.Barcode + "-";
}
DiscountProduct = new DiscountProduct(discount * -1, description);
return(posibleProductsForDiscount.ToList());
}
return(null);
}
public override List <IProduct> CheckForDiscount(List <IProduct> cart)
{
// filter Cart only get type(Product) and group the products by barcode
var posibleProductsForDiscount = cart.Where(product => product.GetType() == typeof(Product))
.Where(product => Barcodes.Contains(product.Barcode));
var amountOfGroups = posibleProductsForDiscount.GroupBy(group => group.Barcode).Count();
if (posibleProductsForDiscount.Count() == 2 && amountOfGroups == 2)
{
string description = "Discount";
decimal cartPrice = 0m;
foreach (var product in posibleProductsForDiscount)
{
cartPrice += product.Amount;
description += "-" + product.Barcode;
}
DiscountProduct = new DiscountProduct((cartPrice - StaticDiscount) * -1, description);
return(posibleProductsForDiscount.ToList());
}
return(null);
}
public virtual List <IProduct> CheckForDiscount(List <IProduct> cart)
{
// filter Cart only get type(Product) and group the products by barcode
var productGroupBarcode = cart.Where(product => product.GetType() == typeof(Product))
.GroupBy(product => product.Barcode);
// get one item if N or more are the same product
var discountProductGroup = productGroupBarcode.Where(group => group.Count() >= N)
.FirstOrDefault();
if (discountProductGroup != null)
{
var product = discountProductGroup.First();
decimal discount = ((product.Amount * N) * Percentage) * -1;
DiscountProduct = new DiscountProduct(product, discount);
return(discountProductGroup.ToList());
}
return(null);
}
