// todo: centralize and test
/// <summary>
/// The discount value in cents, based on catalog information
/// </summary>
/// <param name="productId">The product unique identifier.</param>
/// <returns></returns>
public int GetDiscountAmountInCents(int productId = 0, OrderInfo order = null)
{
var product = DomainHelper.GetProductById(productId);
var productPrice = 0;
if (product != null)
{
if (product.Ranges != null && product.Ranges.Any())
{
var range = product.Ranges.FirstOrDefault(x => x.From <= 1 && x.PriceInCents != 0);
if (range != null)
{
productPrice = range.PriceInCents;
}
}
else
{
//productPrice = product.Price.BeforeDiscount.ValueInCents; this doesn't work, because IsDiscounted will call this function, creating a loop
}
}
if (order == null)
{
order = OrderHelper.GetOrder();
}
var orderCount = 0;
if (order != null)
{
orderCount = order.OrderLines.Select(l => l.ProductInfo).Where(p => p.OriginalId == productId).Sum(p => p.Quantity);
}
var discountValue = RangedDiscountValue(orderCount);
if (DiscountType == DiscountType.NewPrice)
{
return(discountValue - productPrice);
}
if (DiscountType == DiscountType.Amount)
{
return(Math.Max(discountValue, productPrice));
}
if (DiscountType == DiscountType.Percentage)
{
return(DiscountHelper.PercentageCalculation(discountValue, productPrice));
}
return(0);
}
/// <summary>
/// Gets the adjusted price.
/// </summary>
/// <param name="discount">The discount.</param>
/// <param name="priceBeforeDiscount">The price before discount.</param>
/// <returns></returns>
public static int GetAdjustedPrice(this IProductDiscount discount, int priceBeforeDiscount, int orderTotalItemCount = 0)
{
if (discount == null || discount.Type == DiscountType.FreeShipping)
{
return(priceBeforeDiscount);
}
var discountValue = discount.DiscountValue; // discount.RangedDiscountValue(orderTotalItemCount);
if (discount.Type == DiscountType.Percentage)
{
return(priceBeforeDiscount - DiscountHelper.PercentageCalculation(priceBeforeDiscount, discountValue));
}
if (discount.Type == DiscountType.Amount)
{
return(priceBeforeDiscount - discountValue);
}
if (discount.Type == DiscountType.NewPrice)
{
return(discountValue);
}
return(priceBeforeDiscount);
}
public int DiscountAmountForOrder(IOrderDiscount discount, OrderInfo orderInfo, bool applyDiscountEffects = false) //, IAuthenticationProvider authenticationProvider = null)
{
if (!string.IsNullOrEmpty(discount.CouponCode) && !orderInfo.CouponCodes.Contains(discount.CouponCode))
{
return(0);
}
if (orderInfo.Status == OrderStatus.Incomplete)
{
var coupons = _couponCodeService.GetAllForDiscount(discount.Id);
if (coupons.Any()) //
{
var availableCoupons = coupons.Where(c => c.NumberAvailable > 0).Select(c => c.CouponCode);
if (!availableCoupons.Intersect(orderInfo.CouponCodes).Any())
{
return(0);
}
}
}
var authenticationProvider = IO.Container.Resolve <IAuthenticationProvider>();
if (discount.MemberGroups.Any() && !discount.MemberGroups.Intersect(authenticationProvider.RolesForCurrentUser).Any())
{
return(0);
}
if (discount.OncePerCustomer && !string.IsNullOrEmpty(authenticationProvider.CurrentLoginName))
{
var ordersforCurrentMember = OrderHelper.GetOrdersForCustomer(authenticationProvider.CurrentLoginName).Where(x => x.Status != OrderStatus.Incomplete && x.Status != OrderStatus.Cancelled && x.Status != OrderStatus.Returned);
if (ordersforCurrentMember.Any(x => x.Discounts.Any(d => d.OriginalId == discount.Id)))
{
return(0);
}
}
var applicableOrderLines = !discount.AffectedOrderlines.Any() ? orderInfo.OrderLines : _orderService.GetApplicableOrderLines(orderInfo, discount.AffectedOrderlines);
if (discount.AffectedProductTags != null && discount.AffectedProductTags.Any())
{
applicableOrderLines = applicableOrderLines.Where(line => line.ProductInfo.Tags.Intersect(discount.AffectedProductTags).Any()).ToList();
}
var isSellableUnitDiscount = discount.AffectedOrderlines.Any() || (discount.AffectedProductTags != null && discount.AffectedProductTags.Any());
var orderSellableUnits = new List <SellableUnit>();
foreach (var line in applicableOrderLines)
{
//for (var i = 0; i < line.ProductInfo.ItemCount; i++)
orderSellableUnits.AddRange(line.SellableUnits); // maak een lijst met de prijzen van alle (losse) items van de order
}
var numberOfItemsLeftOutOfSets = discount.NumberOfItemsCondition == 0 ? 0 : applicableOrderLines.Sum(line => line.ProductInfo.ItemCount.GetValueOrDefault(1)) % discount.NumberOfItemsCondition;
var applicableSellableUnits = orderSellableUnits.OrderBy(item => item.PriceInCents).Take(orderSellableUnits.Count - numberOfItemsLeftOutOfSets).ToList();
var rangedDiscountValue = RangedDiscountValueForOrder(discount, orderInfo); // todo: not localized
var discountAmount = rangedDiscountValue;
var maximumDiscountableAmount = 0L;
var timesApplicable = 1;
if (discount.Condition == DiscountOrderCondition.None)
{
maximumDiscountableAmount = applicableOrderLines.Sum(orderline => orderline.AmountInCents - (orderline.GetOriginalAmount(false, true) - orderline.GetOriginalAmount(true, true)));
timesApplicable = applicableOrderLines.Sum(orderLine => orderLine.ProductInfo.ItemCount.GetValueOrDefault(1));
}
else if (discount.Condition == DiscountOrderCondition.OnTheXthItem && discount.NumberOfItemsCondition > 0)
{
isSellableUnitDiscount = true;
// todo: test
discountAmount = discountAmount * applicableSellableUnits.Count() / discount.NumberOfItemsCondition;
applicableSellableUnits = applicableSellableUnits.Take(orderSellableUnits.Count / discount.NumberOfItemsCondition).ToList();
maximumDiscountableAmount = applicableSellableUnits.Sum(su => su.PriceInCents); // bereken de korting over de x goedkoopste items, waarbij x het aantal sets in de order is
}
else if (discount.Condition == DiscountOrderCondition.PerSetOfXItems && discount.NumberOfItemsCondition > 0)
{
isSellableUnitDiscount = true;
timesApplicable = applicableSellableUnits.Count() / discount.NumberOfItemsCondition;
if (discount.DiscountType == DiscountType.Amount)
{
applicableSellableUnits = applicableSellableUnits.Take(orderSellableUnits.Count / discount.NumberOfItemsCondition).ToList();
}
discountAmount = discountAmount * applicableSellableUnits.Count() / discount.NumberOfItemsCondition;
maximumDiscountableAmount = applicableSellableUnits.Sum(su => su.PriceInCents);
}
if (discount.IncludeShippingInOrderDiscountableAmount)
{
maximumDiscountableAmount += orderInfo.ShippingProviderAmountInCents;
}
if (discount.DiscountType == DiscountType.Amount)
{
// currently not on SellableUnits, because that would break existing functionality
if (applyDiscountEffects)
{
var amountDiscountEffect = new AmountDiscountEffect {
Amount = rangedDiscountValue
};
if (isSellableUnitDiscount)
{
foreach (var su in applicableSellableUnits)
{
su.SellableUnitDiscountEffects.AddEffect(amountDiscountEffect);
}
}
else
{
orderInfo.OrderDiscountEffects.AddEffect(amountDiscountEffect);
}
}
return((int)Math.Min(discountAmount, maximumDiscountableAmount));
}
if (discount.DiscountType == DiscountType.Percentage)
{
// wanneer SellableUnit/OrderLine/Order
if (applyDiscountEffects)
{
var percentageDiscountEffect = new PercentageDiscountEffect {
Percentage = rangedDiscountValue / 10000m
};
if (isSellableUnitDiscount)
{
foreach (var su in applicableSellableUnits)
{
su.SellableUnitDiscountEffects.AddEffect(percentageDiscountEffect);
}
}
else
{
orderInfo.OrderDiscountEffects.AddEffect(percentageDiscountEffect);
}
}
return(DiscountHelper.PercentageCalculation(rangedDiscountValue, maximumDiscountableAmount));
}
if (discount.DiscountType == DiscountType.NewPrice)
{
if (applyDiscountEffects)
{
var newPriceDiscountEffect = new NewPriceDiscountEffect {
NewPrice = rangedDiscountValue
};
foreach (var applicableSellableUnit in applicableSellableUnits)
{
applicableSellableUnit.SellableUnitDiscountEffects.AddEffect(newPriceDiscountEffect);
}
}
if (discount.Condition == DiscountOrderCondition.OnTheXthItem && discount.NumberOfItemsCondition > 0)
{
return(applicableSellableUnits.Take(orderSellableUnits.Count / discount.NumberOfItemsCondition).Select(su => Math.Max(0, su.PriceInCents - discountAmount)).Sum());
}
return((int)Math.Max(0, maximumDiscountableAmount - rangedDiscountValue * timesApplicable));
}
return(0);
}