private List <Purchase> GetPurchases(ComboCost cost)
{
List <Purchase> purchases = new List <Purchase>();
foreach (var group in cost.Combo)
{
double discount;
if (group.Total > 1)
{
discount = context.Discounts.Where(p => p.MinProductsRequired == group.Total).Select(p => p.Percent).FirstOrDefault();
}
else
{
discount = 0;
}
foreach (var product in group.Products)
{
purchases.Add(new Purchase
{
Product = product,
Discount = discount
});
}
}
return(purchases);
}
public IEnumerable <Purchase> CalculateCost(IEnumerable <string> productSkus)
{
if (productSkus.Count() == 0)
{
return(new List <Purchase>());
}
var products = GetProducts(productSkus);
var combos = GetCombos(products);
if (combos.Count == 0)
{
return(new List <Purchase>());
}
ComboCost cost = CalculateMinCost(combos);
List <Purchase> purchases = GetPurchases(cost);
return(purchases);
}
