Колода карт

namespace Карты
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Croupier croupier = new Croupier();

            croupier.PlayGame();
        }
    }

    class Croupier
    {
        private Deck _deck = new Deck();

        private Player _player = new Player();

        private Dictionary<string, int> _valueCardsInPoints = new Dictionary<string, int>();

        public void PlayGame()
        {
            const string GetCardMenu = "1";
            const string ShowAllCardsAndPointsMenu = "2";
            const string ShuffleMenu = "3";
            const string ExitMenu = "4";

            bool isRun = true;

            AssignPoints();

            while (isRun)
            {
                Console.WriteLine($"{GetCardMenu} - вытянуть карту\n{ShowAllCardsAndPointsMenu} - показать карты на руках\n{ShuffleMenu} - перетасовать карты\n{ExitMenu} - выход");

                string userInput = Console.ReadLine();

                switch (userInput)
                {
                    case GetCardMenu:
                        TransferCard();
                        break;

                    case ShowAllCardsAndPointsMenu:
                        ShowAllCardsAndPoints();
                        break;

                    case ShuffleMenu:
                        _deck.Shuffle();
                        break;

                    case ExitMenu:
                        isRun = false;
                        break;

                    default:
                        Console.WriteLine("\nНет такой команды\n");
                        break;
                }
            }
        }

        private void AssignPoints()
        {
            string[] ranks = { "6", "7", "8", "9", "10", "J", "Q", "K", "A" };

            int[] prices = { 6, 7, 8, 9, 10, 2, 3, 4, 11 };

            for (int i = 0; i < ranks.Length; i++)
            {
                _valueCardsInPoints.Add(ranks[i], prices[i]);
            }
        }

        private void ShowAllCardsAndPoints()
        {
            int minCardInDeck = 1;
            int _points = 0;

            if (_deck.CardCount() >= 1)
            {
                foreach (var card in _player.ReturnCards())
                {
                    _player.ShowCard(card);

                    _points += _valueCardsInPoints[card.Rank];
                }

                Console.WriteLine($"\nОбщее количество очков - {_points}");

                _points = 0;
            }
            else if (_deck.CardCount() > minCardInDeck)
            {
                foreach (var card in _player.ReturnCards())
                {
                    _player.ShowCard(card);
                }

                Console.WriteLine("Карты в колоде закончились");
            }
            else
            {
                Console.WriteLine("\nСначала вытяни карту\n");
            }
        }

        private void TransferCard()
        {
            _player.ShowCard(_player.AddCard(_deck.GiveCard()));
        }
    }

    class Player
    {
        private List<Card> _cards = new List<Card>();

        public Card AddCard(Card card)
        {
            if (card != null)
            {
                _cards.Add(card);
            }

            return card;
        }

        public List<Card> ReturnCards()
        {
            return new List<Card>(_cards);
        }

        public void ShowCard(Card card)
        {
            if (card != null)
            {
                Console.WriteLine($"Масть - {card.Suit} || Номинал - {card.Rank}");
            }
        }
    }

    class Card
    {
        public Card(string rank, char suit)
        {
            Rank = rank;
            Suit = suit;
        }

        public string Rank { get; private set; }
        public char Suit { get; private set; }
    }

    class Deck
    {
        private Random _random = new Random();

        private List<Card> _cards;

        public Deck()
        {
            _cards = new List<Card>();

            CreateCards();
        }

        public int CardCount() => _cards.Count;

        public Card GiveCard()
        {
            Card card = null;

            int minCardInDeck = 1;
            int topCardIndex = 0;

            if (_cards.Count >= minCardInDeck)
            {
                card = _cards[topCardIndex];

                _cards.Remove(card);
            }
            else
            {
                Console.WriteLine("\nКарты в колоде закончились\n");
            }

            return card;
        }

        public void Shuffle()
        {
            for (int i = _cards.Count - 1; i >= 1; i--)
            {
                int randomIndexInList = _random.Next(_cards.Count);

                Card temporaryValue = _cards[randomIndexInList];
                _cards[randomIndexInList] = _cards[i];
                _cards[i] = temporaryValue;
            }

            Console.WriteLine("\nКарты перетасованы\n");
        }

        private void CreateCards()
        {
            string[] ranks = { "6", "7", "8", "9", "10", "J", "Q", "K", "A" };
            char[] suits = { '♣', '♦', '♥', '♠' };

            for (int i = 0; i < ranks.Length; i++)
            {
                for (int j = 0; j < suits.Length; j++)
                {
                    Card card = new Card(ranks[i], suits[j]);
                    _cards.Add(card);
                }
            }
        }
    }
}