/// <summary>
/// GetPrice method will get the configured values for all items in the system and start
/// calculating the price depending on the matching barcodes between the request barcodes
/// and the one exist in the returned collections.
/// </summary>
/// <param name="items"></param>
/// <returns></returns>
public PriceCalculationStatusResource GetPrice(List<Item> items)
{
var priceCalculationStatusResource = new PriceCalculationStatusResource();
double total = 0;
var totalStr = "0";
//Apples cost 60p and oranges cost 25p.
//111 apple barcode
//222 orange barcode
try
{
//This Collection can be stored in database and returned values from it.
//Or save this static values in configuration files and returned these values from it.
//ItemsPriceCollection is static and will be loads once in the static constructor.
ItemPriceCollection itemsPriceColl = ItemsPriceCollectionManager.GetItemPriceCollection();
foreach (Item item in items)
{
foreach (ItemPrice itemPrice in itemsPriceColl)
{
if (item.BarCodeId == itemPrice.BarCodeId)
{
double price = itemPrice.Price;
total += price;
break;
}
}
}
}
catch (Exception ex)
{
throw new Exception(String.Format("Error in calculating price in PriceCalculationMapper.CalcualtePrice method : {0}", ex.Message));
}
//set total price to the data contrat that will be returen in the response body
priceCalculationStatusResource.TotalPrice = total;
return priceCalculationStatusResource;
}
/// <summary>
/// GetPriceWithOffer method will get the configured values for all items in the system and start
/// calculating the price depending on the matching barcodes between the request barcodes
/// and the one exist in the returned collections and depending on the below offer rule:
/// buy one, get one free on Apples
/// 3 for the price of 2 on Oranges
/// </summary>
/// <param name="items"></param>
/// <returns></returns>
public PriceCalculationStatusResource GetPriceWithOffer(List<Item> items)
{
var priceCalculationStatusResource = new PriceCalculationStatusResource();
double total = 0;
int appleCount = 0;
int orangeCont = 0;
double applePrice = 0.0;
double orangePrice = 0.0;
double totalApplePrice = 0.0;
double totalOrangePrice = 0.0;
//Apples cost 60p and oranges cost 25p.
//111 apple barcode
//222 orange barcode
try
{
//This Collection can be stored in database and returned values from it.
//Or save this static values in configuration files and returned these values from it.
//ItemsPriceCollection is static and will be loads once in the static constructor.
ItemPriceCollection itemsPriceColl = ItemsPriceCollectionManager.GetItemPriceCollection();
//Calculate Apples
appleCount += items.Count(item => item.BarCodeId == 111);
foreach (ItemPrice itemPrice in itemsPriceColl.Cast<ItemPrice>().Where(itemPrice => itemPrice.BarCodeId == 111))
{
applePrice = itemPrice.Price;
}
//buy one, get one free on Apples
double partialApplePrice = 0;
if (appleCount%2 > 0)
{
partialApplePrice = appleCount % 2 * applePrice;
}
totalApplePrice = partialApplePrice + Math.Floor((double)appleCount / 2) * applePrice;
//Calculate Oranges
orangeCont += items.Count(item => item.BarCodeId == 222);
foreach (ItemPrice itemPrice in itemsPriceColl.Cast<ItemPrice>().Where(itemPrice => itemPrice.BarCodeId == 222))
{
orangePrice = itemPrice.Price;
}
// 3 for the price of 2 on Oranges
double partialOrangePrice = 0;
if (orangeCont % 3 > 0)
{
partialOrangePrice = orangeCont % 3 * orangePrice;
}
totalOrangePrice = partialOrangePrice + Math.Floor((double)orangeCont / 3) * orangePrice;
}
catch (Exception ex)
{
throw new Exception(String.Format("Error in calculating price in PriceCalculationMapper.CalcualtePriceWithOffer method : {0}", ex.Message));
}
//set total price to the data contrat that will be returen in the response body
priceCalculationStatusResource.TotalPrice = totalApplePrice + totalOrangePrice;
return priceCalculationStatusResource;
}