public void ChangePrice(float price)
{
if (IsDeleted)
{
throw new InvalidOperationException("Order item is deleted.");
}
if (price <= 0)
{
throw new ArgumentException("Price must be larger than 0.");
}
if (price == Price)
{
throw new ArgumentException("Price can't be the same as before.");
}
Price = price;
var oldValue = TotalValue;
TotalValue = Price * Amount;
var difference = TotalValue - oldValue;
CustomerOrder.UpdateTotalValue(difference);
}
public void ChangeAmount(float amount)
{
if (IsDeleted)
{
throw new InvalidOperationException("Order item is deleted.");
}
if (amount <= 0)
{
throw new ArgumentException("Amount must be larger than 0.");
}
if (Amount == amount)
{
throw new ArgumentException("Amount can't be the same as before.");
}
if (Product.Amount < amount)
{
throw new ArgumentException("Amount larger than product deposit.");
}
var difference = amount - Amount;
var movementType = DepositMovement.Out;
if (difference < 0)
{
difference = -difference;
movementType = DepositMovement.In;
}
Amount = amount;
var oldValue = TotalValue;
TotalValue = Price * Amount;
var deposit = CustomerDeposit.MakeCustomerDeposit(this, difference, movementType);
Deposits.Add(deposit);
difference = TotalValue - oldValue;
CustomerOrder.UpdateTotalValue(difference);
}
public static CustomerOrderItem MakeCustomerOrderItem(CustomerOrder customerOrder, Product product, float amount)
{
if (customerOrder == null)
{
throw new ArgumentNullException("Customer order must have a value.");
}
if (product == null)
{
throw new ArgumentNullException("Product must have a value.");
}
if (amount <= 0)
{
throw new ArgumentException("Amount must be larger than 0.");
}
if (product.Amount < amount)
{
throw new ArgumentException("Amount larger than product deposit.");
}
var customerOrderItem = new CustomerOrderItem();
customerOrderItem.CustomerOrderId = customerOrder.Id;
customerOrderItem.CustomerOrder = customerOrder;
customerOrderItem.ProductId = product.Id;
customerOrderItem.Product = product;
customerOrderItem.Amount = amount;
customerOrderItem.Price = product.Price;
customerOrderItem.TotalValue = customerOrderItem.Price * customerOrderItem.Amount;
customerOrderItem.Deposits = new List <CustomerDeposit>();
customerOrder.UpdateTotalValue(customerOrderItem.TotalValue);
var deposit = CustomerDeposit.MakeCustomerDeposit(customerOrderItem, amount, DepositMovement.Out);
customerOrderItem.Deposits.Add(deposit);
return(customerOrderItem);
}