private static SaleItem ToEntity(Repository repository, IEnumerable <Product> products, SaleItemModel model)
{
if (!model.IsValid())
{
return(null);
}
return(new SaleItem
{
Product = products.FirstOrDefault(it => it.Name == model.ProductName)
?? repository.Products.Add(new Product {
Name = model.ProductName
}),
Quantity = decimal.Parse(model.Quantity),
Price = decimal.Parse(model.Price),
});
}
