/// <summary>
/// sell product
/// </summary>
private void Sell()
{
// get the product type the user wants to sell
Product.ProductType productType = _consoleView.DisplaySellProducts(_salesperson);
int numberOfUnits = 0;
// foreach loop to find the existing product
foreach (Product item in _salesperson.CurrentStock)
{
// if product type is found it prompts the user for number of products
// and subtracts them from the product
if (item.Type == productType && productType != Product.ProductType.None)
{
numberOfUnits = _consoleView.GetNumberOfUnitsToSell();
item.SubtractProducts(numberOfUnits);
// if more products are sold than exist in inventory
// backorder notification is displayed to the user
if (item.OnBackorder)
{
_consoleView.DisplayBackorderNotification(item, numberOfUnits);
}
// find the product in the salesIndo list and update the number of units sold
foreach (Product product in city.SalesInfo)
{
if (productType == product.Type)
{
product.SellProducts(numberOfUnits);
}
}
}
}
}