private void RemoveFromNewsletter(INewsletterCommand command, Newsletter newsletter)
{
if (!IsEmailTaken(command.Email))
{
throw new EmailIsTakenException(NotificationExceptionMessage.EmailIsNotExist);
}
newsletter.NotIncluded = true;
}
private void AddToNewsletter(INewsletterCommand command, Newsletter newsletter)
{
if (IsEmailTaken(command.Email))
{
throw new EmailIsTakenException(NotificationExceptionMessage.EmailIsAlreadyInNewsletter);
}
newsletter.Email = command.Email;
newsletter.NotIncluded = false;
}
