public IReadOnlyList <string> CanAddProductOption(ProductOption productOption, int quantity = 1)
{
List <string> errors = new List <string>();
if (quantity <= 0)
{
errors.Add(ValidationMessage.MustBeGreater("Product option quantity", "0"));
}
else if (productOption == null)
{
errors.Add(ValidationMessage.MustSpecify("product option"));
}
else
{
if (productOption.Id == 0)
{
errors.Add(ValidationMessage.MustSpecify("product option id"));
}
if (IncludedProductOptions.FirstOrDefault(x => x.ProductOptionId == productOption.Id) != null)
{
errors.Add(ValidationMessage.AlreadyExists("product option"));
}
}
return(errors);
}
public IReadOnlyList <string> CanChangeProductOption(ProductOption productOption, int quantity = 1)
{
List <string> errors = new List <string>();
if (quantity <= 0)
{
errors.Add(ValidationMessage.MustBeGreater("Product option quantity", "0"));
}
else if (productOption == null)
{
errors.Add(ValidationMessage.MustSpecify("product option"));
}
else
{
if (productOption.Id == 0)
{
errors.Add(ValidationMessage.MustSpecify("product option id"));
}
}
return(errors);
}
