public double GetBuyPrice(List <ShoppingProduct> shoppingProducts)
{
if (null == shoppingProducts || false == shoppingProducts.Any())
{
return(0);
}
CalculateDiscount calculateDiscount = GroupDiscountSeries(shoppingProducts);
return(calculateDiscount.GetPrice());
}
private CalculateDiscount GroupDiscountSeries(List <ShoppingProduct> shoppingProducts)
{
CalculateDiscount collection = new CalculateDiscount();
foreach (var shoppingProduct in shoppingProducts)
{
collection.TryAdd(shoppingProduct);
}
return(collection);
}