public int GetTotalPrice(List<Product> allowedProducts, GroupOffer storeGroupOffer)
{
var cart = new Dictionary<char, int>();
foreach (var sku in skus)
{
if (cart.ContainsKey(sku))
{
cart[sku] += 1;
}
else
{
cart.Add(sku, 1);
}
}
AdjustCartForFreeOffers(allowedProducts, cart);
var basketTotal = AdjustBasketTotalForGroupOffer(storeGroupOffer, cart);
foreach (var sku in cart.Keys)
{
var currentSku = allowedProducts.First(p => p.Sku == sku);
basketTotal += currentSku.GetPrice(cart[sku]);
}
return basketTotal;
}
private int AdjustBasketTotalForGroupOffer(GroupOffer storeGroupOffer, Dictionary<char, int> cart)
{
var basketTotal = 0;
if (storeGroupOffer != null)
{
var groupOfferItems = 0;
foreach (var offersku in storeGroupOffer.Skus)
{
if (cart.ContainsKey(offersku))
{
groupOfferItems += cart[offersku];
}
}
if (groupOfferItems / storeGroupOffer.Count > 0)
{
basketTotal = (groupOfferItems / storeGroupOffer.Count) * storeGroupOffer.SpecialPrice;
groupOfferItems = (groupOfferItems / storeGroupOffer.Count) * storeGroupOffer.Count;
foreach (var offersku in storeGroupOffer.Skus)
{
while (groupOfferItems > 0 && cart.ContainsKey(offersku) && cart[offersku] > 0)
{
cart[offersku]--;
groupOfferItems--;
}
}
}
}
return basketTotal;
}
public Store()
{
ProductsInStore = new List <Product>()
{
new Product('A', 50,
new List <SpecialPriceOffer> {
new SpecialPriceOffer(3, 130), new SpecialPriceOffer(5, 200)
}),
new Product('B', 30,
new List <SpecialPriceOffer> {
new SpecialPriceOffer(2, 45)
}),
new Product('C', 20),
new Product('D', 15),
new Product('E', 40,
null,
new List <FreeProductOffer> {
new FreeProductOffer(2, 'B')
}),
new Product('F', 10,
null,
new List <FreeProductOffer> {
new FreeProductOffer(2, 'F')
}),
new Product('G', 20),
new Product('H', 10,
new List <SpecialPriceOffer> {
new SpecialPriceOffer(5, 45), new SpecialPriceOffer(10, 80)
}),
new Product('I', 35),
new Product('J', 60),
new Product('K', 70,
new List <SpecialPriceOffer> {
new SpecialPriceOffer(2, 120)
}),
new Product('L', 90),
new Product('M', 15),
new Product('N', 40, null,
new List <FreeProductOffer> {
new FreeProductOffer(3, 'M')
}),
new Product('O', 10),
new Product('P', 50, new List <SpecialPriceOffer> {
new SpecialPriceOffer(5, 200)
}),
new Product('Q', 30, new List <SpecialPriceOffer> {
new SpecialPriceOffer(3, 80)
}),
new Product('R', 50, null,
new List <FreeProductOffer> {
new FreeProductOffer(3, 'Q')
}),
new Product('S', 20),
new Product('T', 20),
new Product('U', 40, null,
new List <FreeProductOffer> {
new FreeProductOffer(3, 'U')
}),
new Product('V', 50,
new List <SpecialPriceOffer> {
new SpecialPriceOffer(2, 90), new SpecialPriceOffer(3, 130)
}),
new Product('W', 20),
new Product('X', 17),
new Product('Y', 20),
new Product('Z', 21)
};
GroupOffer = new GroupOffer(new List <char> {
'Z', 'S', 'T', 'Y', 'X'
}, 45, 3);
}