internal PurchasedMovie(Movie movie, Customer customer, Dollars price, ExpirationDate expirationDate)
{
if (price == null || price.IsZero)
{
throw new ArgumentException(nameof(price));
}
if (expirationDate == null || expirationDate.IsExpired)
{
throw new ArgumentException(nameof(expirationDate));
}
Price = price;
Movie = movie ?? throw new ArgumentNullException(nameof(movie));
Customer = customer ?? throw new ArgumentNullException(nameof(customer));
ExpirationDate = expirationDate;
PurchaseDate = DateTime.UtcNow;
}
private CustomerStatus(CustomerStatusType type, ExpirationDate expirationDate) : this()
{
_expirationDate = expirationDate ?? throw new ArgumentNullException(nameof(expirationDate));
Type = type;
}