/// <summary>
/// Method which processes the checkout order of a user.
/// Loads both the price and promotion catalogues when called.
/// </summary>
/// <returns>A string which represents the receipt of the customers order.</returns>
public string Checkout()
{
//// Load price catalogue and promotional resources
// Parse from JSON to respective Model (PriceCatalogue, PromotionCatalogue)
var priceCatalogue = _checkoutService.GetPriceCatalogue(PriceCatalogueRelativePath);
var promotionCatalogue = _checkoutService.GetPromotionCatalogue(PromotionsRelativePath);
// Read items from cart.json
var shoppingCart = _checkoutService.GetShoppingCart(ShoppingCartRelativePath);
var receipt = new Receipt();
foreach (var item in shoppingCart)
{
// Item is already in receipt.
if (receipt.CheckedOutItems.Any(x => x.Name == item))
{
// Update quantity.
receipt.CheckedOutItems.FirstOrDefault(x => x.Name == item).Quantity++;
}
// New Item to add to receipt.
else
{
// Search for item in price catalogue.
var itemFromPriceCatalogue = priceCatalogue.Items.FirstOrDefault(x => x.Name == item);
// Matching item was found in price catalogue.
if (itemFromPriceCatalogue != null)
{
// Create new checked out item to be placed in receipt.
var checkedOutItem = new CheckedOutItem
{
Name = item.ToLower(),
Price = itemFromPriceCatalogue.Price,
Quantity = 1
};
// Search for item in promotion catalogue.
var itemFromPromotionCatalogue = promotionCatalogue.Items.FirstOrDefault(x => x.Name == item);
// Matching item was found in promotion catalogue.
if (itemFromPromotionCatalogue != null)
{
// Add Sale Price to CheckedOutItem.
checkedOutItem.SalePrice = itemFromPromotionCatalogue.SalePrice;
}
// Add item to Receipt
receipt.CheckedOutItems.Add(checkedOutItem);
}
}
}
return(receipt.ToString());
}
public void CheckoutControllerCheckoutMethodTest()
{
// arrange
var expected = new Receipt
{
CheckedOutItems = new List <CheckedOutItem>
{
new CheckedOutItem
{
Name = "item1",
Quantity = 1,
Price = .75,
SalePrice = .50,
},
new CheckedOutItem
{
Name = "item2",
Quantity = 2,
Price = 2.00
}
}
};
var promotionCatalogue = new PromotionCatalogue
{
Items = new List <Item>
{
new Item
{
Name = "item1",
SalePrice = .50
}
}
};
var priceCatalogue = new PriceCatalogue
{
Items = new List <Item>
{
new Item
{
Name = "item1",
Price = .75
},
new Item
{
Name = "item2",
Price = 2.00
}
}
};
var shoppingCart = new Queue <string>();
shoppingCart.Enqueue("item2");
shoppingCart.Enqueue("item1");
shoppingCart.Enqueue("item2");
var actual = new Receipt();
// act
foreach (var item in shoppingCart)
{
// Item is already in receipt.
if (actual.CheckedOutItems.Any(x => x.Name == item))
{
actual.CheckedOutItems.FirstOrDefault(x => x.Name == item).Quantity++;
}
// New Item to add to receipt.
else
{
// Search for item in price catalogue.
var itemFromPriceCatalogue = priceCatalogue.Items.FirstOrDefault(x => x.Name == item);
// Matching item was found in price catalogue.
if (itemFromPriceCatalogue != null)
{
// Create new checked out item to be placed in receipt.
var checkedOutItem = new CheckedOutItem
{
Name = item.ToLower(),
Price = itemFromPriceCatalogue.Price,
Quantity = 1
};
// Search for item in promotion catalgoue.
var itemFromPromotionCatalogue = promotionCatalogue.Items.FirstOrDefault(x => x.Name == item);
// Matching item was found in promotion catalogue.
if (itemFromPromotionCatalogue != null)
{
// Add Sale Price to CheckedOutItem.
checkedOutItem.SalePrice = itemFromPromotionCatalogue.SalePrice;
}
// Add item to the receipt.
actual.CheckedOutItems.Add(checkedOutItem);
}
}
}
// assert
Assert.AreEqual(expected.TotalPrice, actual.TotalPrice);
}
