public PurchaseResponse PurchaseMovie(Customer customer, Movie movie)
{
if (customer.MoviePurchases.Select(r => r.MovieId).Contains(movie.Id))
{
throw new MovieAlreadyPurchasedException("Movie already purchased.");
}
if (!paymentService.Pay(customer, movie))
{
InvalidateCustomerCreditCard(customer);
throw new PaymentFailedException(
$"Payment failed for customer {customer.FullName.ToString()}. " +
"Please check and update your credit card details."
);
}
var moviePurchase = MoviePurchase.Create(customer, movie);
customersRepository.AddMoviePurchase(moviePurchase);
FinishCurrentRentalIfExists(customer, movie);
var movieLinkWithDownload = streamingService.GetMovieStreamWithDownload(movie);
return(new PurchaseResponse(moviePurchase, movieLinkWithDownload));
}