private void LogTotals(BasketResult result)
{
var message = new StringBuilder();
message.AppendLine(".GetTotals()");
message.AppendLine($"\tBase Amount: {result.BaseAmount.ToString("c")}");
message.AppendLine($"\tTotal Discount: {result.DiscountAmount.ToString("c")}");
message.AppendLine($"\tTotal Amount: {result.TotalAmount.ToString("c")}");
message.AppendLine($"\tItems:");
foreach (var item in result.BasketItemResults)
{
message.AppendLine($"\t\tProductId: {item.ProductId}; Quantity: {item.Quantity}; Base Amount: {item.BaseAmount.ToString("c")}; TotalAmount: {item.TotalAmount.ToString("c")};");
if (item.DiscountResult.AppliedDiscounts.Any())
{
foreach (var discount in item.DiscountResult.AppliedDiscounts)
{
message.AppendLine($"\t\t\tApplied Discount: {discount.Key}; Number of times applied: {discount.Value}; Total Discount Amount: {item.DiscountResult.TotalDiscount.ToString("c")}");
}
}
}
_logger.LogInformation(message.ToString());
}
/// <summary>
/// Calculate the Basket totals.
/// </summary>
/// <param name="basketItems">The collection of <see cref="BasketItem"/>.</param>
/// <returns></returns>
public BasketResult Calculate(IEnumerable <BasketItem> basketItems)
{
var result = new BasketResult();
foreach (var bItem in basketItems)
{
var discountResult = _discountCalculator.Calculate(basketItems, bItem.ProductId);
var baseAmount = bItem.UnitPrice * bItem.Quantity;
var itemResult = new BasketItemResult
{
ProductId = bItem.ProductId,
BaseAmount = baseAmount,
Quantity = bItem.Quantity,
UnitPrice = bItem.UnitPrice,
TotalAmount = baseAmount - discountResult.TotalDiscount,
DiscountResult = discountResult
};
result.BasketItemResults.Add(itemResult);
}
return(result);
}