public void Can_calculate_discount_amount_fixed()
{
var discount = new Discount()
{
UsePercentage = false,
DiscountAmount = 10
};
discount.GetDiscountAmount(100).ShouldEqual(10);
discount.DiscountAmount = 20;
discount.GetDiscountAmount(200).ShouldEqual(20);
}
public void Can_calculate_discount_amount_percentage()
{
var discount = new Discount()
{
UsePercentage = true,
DiscountPercentage = 30
};
discount.GetDiscountAmount(100).ShouldEqual(30);
discount.DiscountPercentage = 60;
discount.GetDiscountAmount(200).ShouldEqual(120);
}
public virtual decimal GetDiscountAmount(
Product product,
Customer customer,
decimal additionalCharge,
int quantity,
out Discount appliedDiscount,
ProductBundleItemData bundleItem = null,
PriceCalculationContext context = null)
{
appliedDiscount = null;
decimal appliedDiscountAmount = decimal.Zero;
decimal finalPriceWithoutDiscount = decimal.Zero;
if (bundleItem.IsValid())
{
if (bundleItem.Item.Discount.HasValue && bundleItem.Item.BundleProduct.BundlePerItemPricing)
{
appliedDiscount = new Discount
{
UsePercentage = bundleItem.Item.DiscountPercentage,
DiscountPercentage = bundleItem.Item.Discount.Value,
DiscountAmount = bundleItem.Item.Discount.Value
};
finalPriceWithoutDiscount = GetFinalPrice(product, customer, additionalCharge, false, quantity, bundleItem, context);
appliedDiscountAmount = appliedDiscount.GetDiscountAmount(finalPriceWithoutDiscount);
}
}
else
{
// dont't apply when customer entered price or discounts should be ignored completely
if (product.CustomerEntersPrice || _catalogSettings.IgnoreDiscounts)
{
return appliedDiscountAmount;
}
var allowedDiscounts = GetAllowedDiscounts(product, customer, context);
if (allowedDiscounts.Count == 0)
{
return appliedDiscountAmount;
}
finalPriceWithoutDiscount = GetFinalPrice(product, customer, additionalCharge, false, quantity, bundleItem, context);
appliedDiscount = allowedDiscounts.GetPreferredDiscount(finalPriceWithoutDiscount);
if (appliedDiscount != null)
{
appliedDiscountAmount = appliedDiscount.GetDiscountAmount(finalPriceWithoutDiscount);
}
}
return appliedDiscountAmount;
}
/// <summary>
/// Gets a shipping discount
/// </summary>
/// <param name="customer">Customer</param>
/// <param name="shippingTotal">Shipping total</param>
/// <param name="appliedDiscount">Applied discount</param>
/// <returns>Shipping discount</returns>
public virtual decimal GetShippingDiscount(Customer customer, decimal shippingTotal, out Discount appliedDiscount)
{
appliedDiscount = null;
decimal shippingDiscountAmount = decimal.Zero;
if (_catalogSettings.IgnoreDiscounts)
return shippingDiscountAmount;
var allDiscounts = _discountService.GetAllDiscounts(DiscountType.AssignedToShipping);
var allowedDiscounts = new List<Discount>();
if (allDiscounts != null)
{
foreach (var discount in allDiscounts)
{
if (discount.DiscountType == DiscountType.AssignedToShipping && !allowedDiscounts.Any(x => x.Id == discount.Id) && _discountService.IsDiscountValid(discount, customer))
{
allowedDiscounts.Add(discount);
}
}
}
appliedDiscount = allowedDiscounts.GetPreferredDiscount(shippingTotal);
if (appliedDiscount != null)
{
shippingDiscountAmount = appliedDiscount.GetDiscountAmount(shippingTotal);
}
if (shippingDiscountAmount < decimal.Zero)
shippingDiscountAmount = decimal.Zero;
if (_shoppingCartSettings.RoundPricesDuringCalculation)
shippingDiscountAmount = Math.Round(shippingDiscountAmount, 2);
return shippingDiscountAmount;
}
/// <summary>
/// Gets an order discount (applied to order subtotal)
/// </summary>
/// <param name="customer">Customer</param>
/// <param name="orderSubTotal">Order subtotal</param>
/// <param name="appliedDiscount">Applied discount</param>
/// <returns>Order discount</returns>
public virtual decimal GetOrderSubtotalDiscount(Customer customer,
decimal orderSubTotal, out Discount appliedDiscount)
{
appliedDiscount = null;
decimal discountAmount = decimal.Zero;
if (_catalogSettings.IgnoreDiscounts)
return discountAmount;
var allDiscounts = _discountService.GetAllDiscounts(DiscountType.AssignedToOrderSubTotal);
var allowedDiscounts = new List<Discount>();
if (allDiscounts != null)
{
foreach (var discount in allDiscounts)
{
if (discount.DiscountType == DiscountType.AssignedToOrderSubTotal && !allowedDiscounts.Any(x => x.Id == discount.Id) && _discountService.IsDiscountValid(discount, customer))
{
allowedDiscounts.Add(discount);
}
}
}
appliedDiscount = allowedDiscounts.GetPreferredDiscount(orderSubTotal);
if (appliedDiscount != null)
discountAmount = appliedDiscount.GetDiscountAmount(orderSubTotal);
if (discountAmount < decimal.Zero)
discountAmount = decimal.Zero;
return discountAmount;
}
/// <summary>
/// Gets an order discount (applied to order total)
/// </summary>
/// <param name="customer">Customer</param>
/// <param name="orderTotal">Order total</param>
/// <param name="appliedDiscount">Applied discount</param>
/// <returns>Order discount</returns>
public virtual decimal GetOrderTotalDiscount(Customer customer, decimal orderTotal, out Discount appliedDiscount)
{
appliedDiscount = null;
decimal discountAmount = decimal.Zero;
if (_catalogSettings.IgnoreDiscounts)
return discountAmount;
var allDiscounts = _discountService.GetAllDiscounts(DiscountType.AssignedToOrderTotal);
var allowedDiscounts = new List<Discount>();
if (allDiscounts != null)
{
foreach (var discount in allDiscounts)
{
if (_discountService.IsDiscountValid(discount, customer) && discount.DiscountType == DiscountType.AssignedToOrderTotal &&
!allowedDiscounts.ContainsDiscount(discount))
{
allowedDiscounts.Add(discount);
}
}
}
appliedDiscount = allowedDiscounts.GetPreferredDiscount(orderTotal);
if (appliedDiscount != null)
discountAmount = appliedDiscount.GetDiscountAmount(orderTotal);
if (discountAmount < decimal.Zero)
discountAmount = decimal.Zero;
if (_shoppingCartSettings.RoundPricesDuringCalculation)
discountAmount = Math.Round(discountAmount, 2);
return discountAmount;
}