private string AddRegularPriceLineItem(CheckoutTransaction transaction, string barcode)
{
var lineItem = transaction.Bill.LineItems.SingleOrDefault(i => i.Barcode == barcode);
var output = "";
if (lineItem != null)
{
var note = lineItem.DiscountNote + (string.IsNullOrEmpty(lineItem.DiscountNote) ? "" : "\n");
output = $"{lineItem.Quantity} {lineItem.Barcode} @ {lineItem.PricePerUnit:C2} is {lineItem.SubTotal:C2}\n{note}";
}
return output;
}
public string Generate(CheckoutTransaction transaction)
{
var receipt = "Receipt:\n";
foreach (var barcode in transaction.Items.GroupBy(i => i, i => i, (k, j) => k))
{
receipt += AddRegularPriceLineItem(transaction, barcode);
}
receipt += $"Total is {transaction.Bill.Total:C2}";
return receipt;
}
public void When_I_generate_a_receipt_with_regular_prices()
{
var sut = new ReceiptGenerator();
var productCatalog = new ProductCatalog();
productCatalog.AddProduct("apple", 0.75m);
productCatalog.AddProduct("banana", 1.00m);
var transaction = new CheckoutTransaction(productCatalog, new Promotions(new List<IPromotionalDiscountRule>()));
transaction.AddItem("apple");
transaction.AddItem("banana");
transaction.AddItem("apple");
var actual = sut.Generate(transaction);
Assert.That(actual, Is.EqualTo("Receipt:\n2 apple @ $0.75 is $1.50\n1 banana @ $1.00 is $1.00\nTotal is $2.50"));
}
public void Begin()
{
if (!_cartData.Any())
{
_consoleWriter.WriteLine("Error cart is empty");
return;
}
var productCatalog = new ProductCatalog();
foreach (var productCatalogLine in _productCatalogData)
{
var parts = productCatalogLine.Split(',');
if (parts[0] == "PRODUCT")
{
var barcode = parts[1].Trim();
var price = Decimal.Parse(parts[2]);
productCatalog.AddProduct(barcode, price);
}
else if (parts[0] == "QUANTITY_DISCOUNT")
{
var barcode = parts[1].Trim();
var quantity = Convert.ToInt32(parts[2]);
var discountPrice = Convert.ToDecimal(parts[3]);
productCatalog.AddQuantityDiscount(barcode, quantity, discountPrice);
}
else if (parts[0] == "ADDITIONAL_ITEM_DISCOUNT")
{
var barcode = parts[1].Trim();
var quantity = Convert.ToInt32(parts[2]);
var quantityDiscounted = Convert.ToInt32(parts[3]);
var dicountPercentage = Convert.ToDouble(parts[4]);
productCatalog.AddAdditionalItemDiscount(barcode, quantity, quantityDiscounted, dicountPercentage);
}
}
var promotionalDiscountRules = new List<IPromotionalDiscountRule>() { new AdditionalItemDiscountRule(productCatalog), new QuantityDiscountRule(productCatalog) };
var transaction = new CheckoutTransaction(productCatalog, new Promotions(promotionalDiscountRules));
foreach (var cartLine in _cartData)
{
transaction.AddItem(cartLine);
}
var reportGenerator = new ReceiptGenerator();
var receipt = reportGenerator.Generate(transaction);
_consoleWriter.WriteLine(receipt);
}
public void When_I_generate_a_receipt_with_additional_item_discount()
{
var sut = new ReceiptGenerator();
var productCatalog = new ProductCatalog();
productCatalog.AddProduct("apple", 0.75m);
productCatalog.AddProduct("banana", 1.00m);
productCatalog.AddAdditionalItemDiscount("apple", 1, 1, 100);
var transaction = new CheckoutTransaction(productCatalog, new Promotions(new List<IPromotionalDiscountRule>() { new AdditionalItemDiscountRule(productCatalog), new QuantityDiscountRule(productCatalog)}));
transaction.AddItem("apple");
transaction.AddItem("banana");
transaction.AddItem("apple");
transaction.AddItem("apple");
transaction.AddItem("apple");
transaction.AddItem("apple");
var actual = sut.Generate(transaction);
Assert.That(actual, Is.EqualTo("Receipt:\n5 apple @ $0.75 is $3.75\n***Discount on apple: Buy 1 apple get 1 at $0.00, New Price $2.25, Savings $1.50\n1 banana @ $1.00 is $1.00\nTotal is $3.25"));
}
