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

using Gameboard.Shogi.Api.ServiceModels.Messages;
using Gameboard.ShogiUI.Sockets.Repositories;
using Gameboard.ShogiUI.Sockets.ServiceModels.Socket.Messages;
using Gameboard.ShogiUI.Sockets.ServiceModels.Socket.Types;
using Newtonsoft.Json;
using System.Threading.Tasks;

namespace Gameboard.ShogiUI.Sockets.Managers.ClientActionHandlers
{
  public class JoinByCodeHandler : IActionHandler
  {
    private readonly IGameboardRepository repository;
    private readonly ISocketCommunicationManager communicationManager;

    public JoinByCodeHandler(
      ISocketCommunicationManager communicationManager,
      IGameboardRepository repository)
    {
      this.repository = repository;
      this.communicationManager = communicationManager;
    }

    public async Task Handle(string json, string userName)
    {
      var request = JsonConvert.DeserializeObject<JoinByCode>(json);
      var sessionName = await repository.PostJoinPrivateSession(new PostJoinPrivateSession
      {
        PlayerName = userName,
        JoinCode = request.JoinCode
      });

      if (sessionName == null)
      {
        var response = new JoinGameResponse(ClientAction.JoinByCode)
        {
          PlayerName = userName,
          GameName = sessionName,
          Error = "Error joining game."
        };
        await communicationManager.BroadcastToPlayers(response, userName);
      }
      else
      {
        // Other members of the game see a regular JoinGame occur.
        var response = new JoinGameResponse(ClientAction.JoinGame)
        {
          PlayerName = userName,
          GameName = sessionName
        };
        // At this time, userName hasn't subscribed and won't receive this message.
        await communicationManager.BroadcastToGame(sessionName, response);

        // The player joining sees the JoinByCode occur.
        response = new JoinGameResponse(ClientAction.JoinByCode)
        {
          PlayerName = userName,
          GameName = sessionName
        };
        await communicationManager.BroadcastToPlayers(response, userName);
      }
    }
  }
}