private async Task <Deck> GetDeckAsync(Guid deckId)
{
var deck = await _deckRepository.GetByDeckByIdWithCardsAsync(deckId);
if (deck == null)
{
throw new Exception("Deck not found or finished");
}
if (deck.Cards == null || deck.Cards.Count == 0)
{
throw new Exception("no more cards to withdraw");
}
return(deck);
}
