public ExpirationDate GetExpirationDate()
{
ExpirationDate result = LicensingModel switch
{
LicensingModel.TwoDays => ExpirationDate.Create(DateTime.UtcNow.AddDays(2)).Value,
LicensingModel.LifeLong => ExpirationDate.Infinite,
_ => throw new ArgumentOutOfRangeException()
};
return(result);
}
public void PurchaseMovie(Movie movie, DateTime now)
{
if (HasPurchasedMovie(movie, now))
{
throw new Exception();
}
ExpirationDate expirationDate = movie.GetExpirationDate();
Dollars price = movie.CalculatePrice(Status, DateTime.UtcNow);
var purchasedMovie = new PurchasedMovie(movie.Id, Id, price, now, expirationDate);
_purchasedMovies.Add(purchasedMovie);
MoneySpent += price;
}
public PurchasedMovie(long movieId, long customerId, Dollars price, DateTime now, ExpirationDate expirationDate)
{
if (price == null || price.IsZero)
{
throw new ArgumentException(nameof(price));
}
if (expirationDate == null || expirationDate.IsExpired(now))
{
throw new ArgumentException(nameof(expirationDate));
}
MovieId = movieId;
CustomerId = customerId;
Price = price;
PurchaseDate = now;
ExpirationDate = expirationDate;
}
private CustomerStatus(CustomerStatusType type, ExpirationDate expirationDate)
: this()
{
Type = type;
ExpirationDate = expirationDate;
}