public Card GetDiscardPile(string gameId, string playerId)
{
CardGame cardGame = cardGameRepository.GetCardGame(gameId);
if (cardGame == null)
{
throw new NullReferenceException();
}
else
{
Player player = cardGame.Players.First(player => player.Id == playerId);
Card card = cardGame.GetDiscardPile();
player.Hand.Add(card);
player.Stage = Stage.Discard;
cardGameRepository.UpdateGame(cardGame);
return(card);
}
}