internal Item(Product product, int quantity, DiscountRate discountRate)
: this()
{
this.Product = product;
this.Quantity = 1;
this.DiscountRate = discountRate;
Calculate();
}
private void CalculateSharedDiscount()
{
if (!Summary.DiscountTotalAmount.IsZero())
{
var discountTotalRate = new DiscountRate(DiscountType.Percent, Summary.DiscountTotalAmount.Percent);
var discountTotalAmount = discountTotalRate.Apply(Summary.SubTotal, 1);
this.Summary = new Summary(Summary.TaxAmount, discountTotalAmount, Summary.ChargeAmount, Summary.SubTotal);
foreach (Item item in Items)
{
item.ChangeDiscountTotal(Summary.SubTotal, discountTotalAmount);
}
}
}
public void ChangeDiscountTotal(DiscountRate discountTotalRate)
{
var discountTotalAmount = discountTotalRate.Apply(Summary.SubTotal, 1);
foreach (Item item in Items)
{
item.ChangeDiscountTotal(Summary.SubTotal, discountTotalAmount);
}
this.Summary = new Summary(Summary.TaxAmount, discountTotalAmount, Summary.ChargeAmount, Summary.SubTotal);
CalculateCharge();
CalculateTax();
}
public void ChangeDiscount(Guid itemId, DiscountRate discountRate)
{
var item = GetItem(itemId);
item.ChangeDiscount(discountRate);
CalculateSummary();
}
public Guid AddItem(Product product, DiscountRate discountRate)
{
Item item = GetItem(product);
if (item.IsNull())
{
item = new Item(product, 1, discountRate);
Items.Add(item);
}
else
item.AddQuantity(1);
CalculateSummary();
return item.Id;
}
internal void ChangeDiscount(DiscountRate discountRate)
{
this.DiscountRate = discountRate;
Calculate();
}
