public virtual async Task <CartAggregate> ChangeItemQuantityAsync(ItemQtyAdjustment qtyAdjustment)
{
EnsureCartExists();
var validationResult = await new ItemQtyAdjustmentValidator(this).ValidateAsync(qtyAdjustment, ruleSet: ValidationRuleSet);
if (!validationResult.IsValid)
{
ValidationErrors.AddRange(validationResult.Errors);
}
var lineItem = Cart.Items.FirstOrDefault(i => i.Id == qtyAdjustment.LineItemId);
if (lineItem != null)
{
var salePrice = qtyAdjustment.CartProduct.Price.GetTierPrice(qtyAdjustment.NewQuantity).Price;
if (salePrice != 0)
{
lineItem.SalePrice = salePrice.Amount;
}
//List price should be always greater or equals sale price because it may cause incorrect totals calculation
lineItem.ListPrice = lineItem.ListPrice < lineItem.SalePrice
? lineItem.SalePrice
: lineItem.ListPrice;
lineItem.Quantity = qtyAdjustment.NewQuantity;
}
return(this);
}
public virtual async Task <CartAggregate> ChangeItemQuantityAsync(ItemQtyAdjustment qtyAdjustment)
{
EnsureCartExists();
var validationResult = await AbstractTypeFactory <ItemQtyAdjustmentValidator> .TryCreateInstance().ValidateAsync(qtyAdjustment, options => options.IncludeRuleSets(ValidationRuleSet));
if (!validationResult.IsValid)
{
ValidationErrors.AddRange(validationResult.Errors);
}
var lineItem = Cart.Items.FirstOrDefault(i => i.Id == qtyAdjustment.LineItemId);
if (lineItem != null)
{
SetLineItemTierPrice(qtyAdjustment.CartProduct.Price, qtyAdjustment.NewQuantity, lineItem);
lineItem.Quantity = qtyAdjustment.NewQuantity;
}
return(this);
}
