FaraonCardGame/Faraon.Core/Models/Deck.cs

namespace Faraon.Core.Models;

public class Deck
{
    private readonly Random _random;

    public Deck(int? seed = null)
    {
        _random = seed.HasValue ? new Random(seed.Value) : new Random();
    }

    public static List<Card> CreateStandardDeck()
    {
        var cards = new List<Card>(32);
        foreach (Suit suit in Enum.GetValues<Suit>())
        {
            foreach (Rank rank in Enum.GetValues<Rank>())
            {
                cards.Add(new Card(suit, rank));
            }
        }
        return cards;
    }

    public List<Card> CreateShuffledDeck()
    {
        var deck = CreateStandardDeck();
        Shuffle(deck);
        return deck;
    }

    public void Shuffle<T>(List<T> list)
    {
        int n = list.Count;
        while (n > 1)
        {
            n--;
            int k = _random.Next(n + 1);
            (list[k], list[n]) = (list[n], list[k]);
        }
    }
}