public void ComputeBillScenarioCTest()
{
Item objItemA = new Item()
{
ItemId = 1, ItemName = "A", Description = "Test Item A", ItemPrice = 50
};
Item objItemB = new Item()
{
ItemId = 2, ItemName = "B", Description = "Test Item B", ItemPrice = 30
};
Item objItemC = new Item()
{
ItemId = 3, ItemName = "C", Description = "Test Item C", ItemPrice = 20
};
Item objItemD = new Item()
{
ItemId = 4, ItemName = "D", Description = "Test Item D", ItemPrice = 15
};
KartItem objKartItem1 = new KartItem(objItemA, 3);
KartItem objKartItem2 = new KartItem(objItemB, 5);
KartItem objKartItem3 = new KartItem(objItemC, 1);
KartItem objKartItem4 = new KartItem(objItemD, 1);
List <KartItem> objPurchasedItemList = new List <KartItem>();
objPurchasedItemList.Add(objKartItem1);
objPurchasedItemList.Add(objKartItem2);
objPurchasedItemList.Add(objKartItem3);
objPurchasedItemList.Add(objKartItem4);
Kart objKart = new Kart(objPurchasedItemList);
//Now setup the Promotions Rules
List <KeyValuePair <Item, int> > kvpList = new List <KeyValuePair <Item, int> >();
kvpList.Add(new KeyValuePair <Item, int>(objItemC, 1));
kvpList.Add(new KeyValuePair <Item, int>(objItemD, 1));
IPromotionRule objRuleA = new BuyNQtyAtFixedPrice("Promotion A", 130, 3, "A");
IPromotionRule objRuleB = new BuyNQtyAtFixedPrice("Promotion B", 45, 2, "B");
IPromotionRule objRuleC = new BuyNItemsAtFixedPrice("Combination C & D", 30, kvpList);
//Creating instance of RuleEngine
IPromotion objPromotion = new PromotionEngine();
objPromotion.ApplyPromotion(objRuleA, objKart, true);
objPromotion.ApplyPromotion(objRuleB, objKart, true);
objPromotion.ApplyPromotion(objRuleC, objKart);
Assert.AreEqual(280, objKart.CalculateAmountPayable());
}
public void ComputeBillScenarioBTest()
{
Item objItemA = new Item()
{
ItemId = 1, ItemName = "A", Description = "Test Item A", ItemPrice = 50
};
Item objItemB = new Item()
{
ItemId = 2, ItemName = "B", Description = "Test Item B", ItemPrice = 30
};
Item objItemC = new Item()
{
ItemId = 3, ItemName = "C", Description = "Test Item C", ItemPrice = 20
};
KartItem objKartItem1 = new KartItem(objItemA, 5);
KartItem objKartItem2 = new KartItem(objItemB, 5);
KartItem objKartItem3 = new KartItem(objItemC, 1);
List <KartItem> objPurchasedItemList = new List <KartItem>();
objPurchasedItemList.Add(objKartItem1);
objPurchasedItemList.Add(objKartItem2);
objPurchasedItemList.Add(objKartItem3);
Kart objKart = new Kart(objPurchasedItemList);
IPromotionRule objRuleA = new BuyNQtyAtFixedPrice("Promotion A", 130, 3, "A");
IPromotionRule objRuleB = new BuyNQtyAtFixedPrice("Promotion B", 45, 2, "B");
IPromotion objPromotion = new PromotionEngine();
objPromotion.ApplyPromotion(objRuleA, objKart, true);
objPromotion.ApplyPromotion(objRuleB, objKart, true);
Assert.AreEqual(370, objKart.CalculateAmountPayable());
}
public void AddItem(KartItem item)
{
Items.Add(KartItem);
}
static void Main(string[] args)
{
Item objItemA = new Item()
{
ItemId = 1, ItemName = "A", Description = "Test Item A", ItemPrice = 50
};
Item objItemB = new Item()
{
ItemId = 2, ItemName = "B", Description = "Test Item B", ItemPrice = 30
};
Item objItemC = new Item()
{
ItemId = 3, ItemName = "C", Description = "Test Item C", ItemPrice = 20
};
Item objItemD = new Item()
{
ItemId = 4, ItemName = "D", Description = "Test Item D", ItemPrice = 15
};
KartItem objKartItem1 = new KartItem(objItemA, 8);
KartItem objKartItem2 = new KartItem(objItemB, 5);
KartItem objKartItem3 = new KartItem(objItemC, 1);
KartItem objKartItem4 = new KartItem(objItemD, 1);
List <KartItem> objPurchasedItemList = new List <KartItem>();
objPurchasedItemList.Add(objKartItem1);
objPurchasedItemList.Add(objKartItem2);
objPurchasedItemList.Add(objKartItem3);
objPurchasedItemList.Add(objKartItem4);
Kart objKart = new Kart(objPurchasedItemList);
IPromotionRule objRule = new BuyNQtyAtFixedPrice("Promotion A", 130, 3, "A");
IPromotion objPromotion = new PromotionEngine();
objPromotion.ApplyPromotion(objRule, objKart);
objRule = new BuyNQtyAtFixedPrice("Promotion B", 45, 2, "B");
objPromotion.ApplyPromotion(objRule, objKart);
Console.WriteLine("Total Amount Payable :" + objKart.CalculateAmountPayable());
List <KeyValuePair <Item, int> > kvpList = new List <KeyValuePair <Item, int> >();
kvpList.Add(new KeyValuePair <Item, int>(objItemC, 1));
kvpList.Add(new KeyValuePair <Item, int>(objItemD, 1));
List <KartItem> objPurchasedItemList1 = new List <KartItem>();
KartItem objKartItem5 = new KartItem(objItemC, 2);
KartItem objKartItem6 = new KartItem(objItemD, 1);
objPurchasedItemList1.Add(objKartItem5);
objPurchasedItemList1.Add(objKartItem6);
Kart objKart1 = new Kart(objPurchasedItemList1);
objRule = new BuyNItemsAtFixedPrice("Combination C & D", 30, kvpList);
objPromotion.ApplyPromotion(objRule, objKart1);
objPromotion.ApplyPromotion(objRule, objKart);
Console.WriteLine("Total Amount Payable for Kart :" + objKart.CalculateAmountPayable());
Console.WriteLine("Total Amount Payable :" + objKart1.CalculateAmountPayable());
Console.WriteLine("Hello World!");
Console.ReadLine();
}
public void Update(KartItem kart)
{
throw new NotImplementedException("Not implemented");
}
public void Add(KartItem kart)
{
_fakeKarts.Add(kart);
}
public IActionResult Put([FromBody] KartItem kart)
{
_kartService.Update(kart);
return(base.Ok(new NoContentResponse("Ok", "updated kart")));
}
public IActionResult Post([FromBody] KartItem kart)
{
_kartService.Add(kart);
return(base.Ok(new NoContentResponse("Ok", "created kart")));
}
private void ApplyPromotionForItemsCombination(IPromotionRule promotion, IItemList items)
{
var discountCombinationItems = promotion.GetItemCombinationList();
var shoppingCartClone = items.GetItemList();
var itemsMarkedForDiscount = new List <KartItem>();
var eligibleForDiscount = false;
foreach (var itemsCountsCombination in discountCombinationItems)
{
var shoppedItem = items.GetItemList()
.Where(ci => ci.ItemObj == itemsCountsCombination.Key)
.Select(ci => ci)
.Single();
if (shoppedItem.Equals(new KeyValuePair <Item, int>()))
{
eligibleForDiscount = false;
break;
}
if (shoppedItem.ItemQuantity >= itemsCountsCombination.Value)
{
eligibleForDiscount = true;
itemsMarkedForDiscount.Add(new KartItem(shoppedItem.ItemObj, shoppedItem.ItemQuantity));
var prod = shoppedItem.ItemObj;
shoppingCartClone.Remove(shoppedItem);
var remainingCount = shoppedItem.ItemQuantity % itemsCountsCombination.Value;
shoppingCartClone.Add(new KartItem(prod, remainingCount));
}
}
if (eligibleForDiscount)
{
int[] arr = new int[itemsMarkedForDiscount.Count];
int i = 0;
// We need to iterate through the collection to get the multipler for promotional KartItem
foreach (var it in itemsMarkedForDiscount)
{
arr[i] = it.ItemQuantity;
i++;
}
int multiplier = arr.Min();
//Once we get the correct multipler, we need to correct Quantity in original Kart, so that correct amount can be calculated.
foreach (var it in itemsMarkedForDiscount)
{
var shoppedItem = items.GetItemList()
.Where(ci => ci.ItemObj == it.ItemObj)
.Select(ci => ci)
.Single();
shoppedItem.ItemQuantity += it.ItemQuantity - multiplier;
shoppedItem.AmountPayable = shoppedItem.ItemQuantity * shoppedItem.ItemObj.ItemPrice;
}
//Here we are adding new KartItem for promotion items.
double amount = promotion.PromotionAmount * multiplier;
Item itm = new Item();
itm.ItemName = promotion.PromotionName;
itm.ItemPrice = promotion.PromotionAmount;
KartItem ktm = new KartItem(itm, multiplier);
items.AddKartItem(ktm);
}
else //reverse and restore
{
itemsMarkedForDiscount.ForEach(it =>
{
shoppingCartClone.Remove(shoppingCartClone.Find(p => p.ItemObj == it.ItemObj));
shoppingCartClone.Add(it);
});
}
}