public void ScenarioB()
        {
            PromotionController promotionController = new PromotionController();

            PromotionRequestModel  request  = new PromotionRequestModel();
            PromotionResponseModel response = new PromotionResponseModel();

            request.PromotionId = 1;

            request.CartItems.Add(
                new CartItemModel
            {
                ItemName = "A",
                ItemQty  = 5
            });

            request.CartItems.Add(new CartItemModel
            {
                ItemName = "B",
                ItemQty  = 5
            });

            request.CartItems.Add(new CartItemModel
            {
                ItemName = "C",
                ItemQty  = 1
            });

            response = promotionController.ApplyPromotion(request);

            Assert.AreEqual(370, response.TotalCost);
        }
Esempio n. 2
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        public PromotionResponseModel ApplyPromotion(PromotionRequestModel request)
        {
            PromotionResponseModel response          = new PromotionResponseModel();
            PromotionBusiness      promotionBusiness = new PromotionBusiness();

            response.TotalCost = 0;
            //Retrieve SKU Promotion data from database
            response.PromotionApplied = promotionBusiness.GetPromotion(request.PromotionId);

            using (PromotionEngineEntities query = new PromotionEngineEntities())
            {
                //Retrieve SKU price from databse
                var dbItems = (from cartItems in request.CartItems
                               join items in query.Items
                               on cartItems.ItemName equals items.ItemName
                               select new { cartItems.ItemQty, items.ItemName, items.ItemPrice }).ToList();

                foreach (FormulaResponseModel formula in response.PromotionApplied.PromotionFormulas)
                {
                    string[] formulaItemNames = formula.ItemNames.Split('&');

                    //Logic to calculate the purchase of 'n' items of a SKU for a fixed price
                    if (formulaItemNames.Length > 0 && formulaItemNames.Length == 1)
                    {
                        foreach (var dbitem in dbItems)
                        {
                            if (dbitem.ItemName == formulaItemNames.Single())
                            {
                                response.TotalCost += (((dbitem.ItemQty - (dbitem.ItemQty % formula.ItemQty)) / (formula.ItemQty)) * formula.PromotionValue) +
                                                      ((dbitem.ItemQty % formula.ItemQty) * dbitem.ItemPrice);
                            }
                        }
                    }

                    //Logic to calculate the purchase of SKU 1 & SKU 2 ,.SKU 'n' for a fixed price
                    else if (formulaItemNames.Length > 1)
                    {
                        var filteredDBItems = (from filtereddbItems in dbItems
                                               join filter in formulaItemNames
                                               on filtereddbItems.ItemName equals filter
                                               select new { filtereddbItems.ItemQty, filtereddbItems.ItemName, filtereddbItems.ItemPrice }).ToList();

                        if (formulaItemNames.Length == filteredDBItems.Count())
                        {
                            int itemsFixedPrice = filteredDBItems.Min(q => q.ItemQty);

                            response.TotalCost += itemsFixedPrice * formula.PromotionValue;

                            foreach (var item in filteredDBItems)
                            {
                                response.TotalCost += ((item.ItemQty - itemsFixedPrice) * item.ItemPrice);
                            }
                        }
                        else
                        {
                            foreach (var item in filteredDBItems)
                            {
                                response.TotalCost += (item.ItemQty * item.ItemPrice);
                            }
                        }
                    }
                }
            }

            return(response);
        }