Shogi/Gameboard.ShogiUI.Sockets/Managers/BoardManager.cs

using Gameboard.ShogiUI.BoardState;
using System.Collections.Concurrent;

namespace Gameboard.ShogiUI.Sockets.Managers
{
  public interface IBoardManager
  {
    void Add(string sessionName, ShogiBoard board);
    ShogiBoard Get(string sessionName);
  }

  public class BoardManager : IBoardManager
  {
    private readonly ConcurrentDictionary<string, ShogiBoard> Boards;

    public BoardManager()
    {
      Boards = new ConcurrentDictionary<string, ShogiBoard>();
    }

    public void Add(string sessionName, ShogiBoard board) => Boards.TryAdd(sessionName, board);

    public ShogiBoard Get(string sessionName)
    {
      if (Boards.TryGetValue(sessionName, out var board))
        return board;
      return null;
    }

    public string GetBoardState()
    {
      return string.Empty;
    }
  }
}