public static Result <PriceType> New(Title title, IPriceTypePolicy policy)
{
if (title == null)
{
throw new ArgumentNullException(nameof(title));
}
if (policy == null)
{
throw new ArgumentNullException(nameof(policy));
}
var priceType = new PriceType(title);
if (!policy.IsUnique(priceType))
{
return(Fail <PriceType>("PriceType Title Should Be Unique"));
}
priceType.RaiseDomainEvent(new PriceTypeCreated(priceType));
return(Ok(priceType));
}
public Result <ProductPrice> AddPrice(PriceType priceType, Price price)
{
if (priceType == null)
{
throw new ArgumentNullException(nameof(priceType));
}
if (price == null)
{
throw new ArgumentNullException(nameof(price));
}
if (_prices.Exists(p => p.PriceType == priceType))
{
return(Fail <ProductPrice>($"A Price With PriceType:{priceType.Title} Already Exists"));
}
var productPrice = new ProductPrice(this, priceType, price);
_prices.Add(productPrice);
return(Ok(productPrice));
}
internal ProductPrice(Product product, PriceType priceType, Price price) : this()
{
Product = product;
PriceType = priceType;
Price = price;
}
public Price FindPrice(PriceType priceType)
{
var price = _prices.Find(p => p.PriceType == priceType);
return(price?.Price ?? Price.Price);
}
