public IReadOnlyList <string> CanAddProduct(Product product, int relativeWeight = 1)
{
List <string> errors = new List <string>();
if (product == null)
{
errors.Add(ValidationMessage.MustSpecify("product"));
}
else
{
if (product.Id == 0)
{
errors.Add(ValidationMessage.MustSpecify("product id"));
}
else if (IncludedProducts.FirstOrDefault(x => x.ProductId == product.Id) != null)
{
errors.Add(ValidationMessage.AlreadyExists("product"));
}
}
if (relativeWeight < 0)
{
errors.Add(ValidationMessage.Incorrect("relative weight"));
}
return(errors);
}
private void ValidateAndThrowRelativeWeight(int relativeWeight)
{
if (relativeWeight < 0)
{
throw new InvariantViolationException(
ValidationMessage.Incorrect("realtive weight"),
TariffErrorCode.IncorrectRelativeWeightValue);
}
}
public IReadOnlyList <string> CanChangeProduct(Product product, int relativeWeight = 1)
{
List <string> errors = new List <string>();
if (product == null)
{
errors.Add(ValidationMessage.MustSpecify("product"));
}
else
{
if (product.Id == 0)
{
errors.Add(ValidationMessage.MustSpecify("product id"));
}
}
if (relativeWeight < 0)
{
errors.Add(ValidationMessage.Incorrect("relative weight"));
}
return(errors);
}
