Shogi/Gameboard.ShogiUI.Sockets/Managers/ClientActionHandlers/MoveHandler.cs

using Gameboard.ShogiUI.Sockets.ServiceModels.Socket;
using System.Threading.Tasks;

namespace Gameboard.ShogiUI.Sockets.Managers.ClientActionHandlers
{
  public interface IMoveHandler
  {
    Task Handle(MoveRequest request, string userName);
  }
  public class MoveHandler : IMoveHandler
  {
    private readonly IGameboardManager gameboardManager;
    private readonly ISocketConnectionManager connectionManager;
    public MoveHandler(
      ISocketConnectionManager connectionManager,
      IGameboardManager gameboardManager)
    {
      this.gameboardManager = gameboardManager;
      this.connectionManager = connectionManager;
    }

    public async Task Handle(MoveRequest request, string userName)
    {
      Models.Move moveModel;
      if (request.Move.PieceFromCaptured.HasValue)
      {
        moveModel = new Models.Move(request.Move.PieceFromCaptured.Value, request.Move.To);
      }
      else
      {
        moveModel = new Models.Move(request.Move.From!, request.Move.To, request.Move.IsPromotion);
      }

      var session = await gameboardManager.ReadSession(request.GameName);
      if (session != null)
      {
        var shogi = session.Shogi;
        var moveSuccess = shogi.Move(moveModel);
        if (moveSuccess)
        {
          await gameboardManager.CreateBoardState(session.Name, shogi);
          var response = new MoveResponse()
          {
            GameName = request.GameName,
            PlayerName = userName,
            Move = moveModel.ToServiceModel()
          };
          await connectionManager.BroadcastToPlayers(response, session.Player1, session.Player2);
        }
        else
        {
          var response = new MoveResponse()
          {
            Error = "Invalid move."
          };
          await connectionManager.BroadcastToPlayers(response, userName);
        }
      }
    }
  }
}