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

using Gameboard.ShogiUI.Sockets.Extensions;
using Gameboard.ShogiUI.Sockets.Repositories;
using Gameboard.ShogiUI.Sockets.ServiceModels.Socket.Messages;
using Gameboard.ShogiUI.Sockets.ServiceModels.Socket.Types;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using System;
using System.Linq;
using System.Net.WebSockets;
using System.Threading.Tasks;

namespace Gameboard.ShogiUI.Sockets.Managers.ClientActionHandlers
{
  public class ListGamesHandler : IActionHandler
  {
    private readonly ILogger<ListGamesHandler> logger;
    private readonly IGameboardRepository repository;

    public ListGamesHandler(
      ILogger<ListGamesHandler> logger,
      IGameboardRepository repository)
    {
      this.logger = logger;
      this.repository = repository;
    }

    public async Task Handle(WebSocket socket, string json, string userName)
    {
      logger.LogInformation("Socket Request \n{0}\n", new[] { json });
      var request = JsonConvert.DeserializeObject<ListGamesRequest>(json);
      var getGamesResponse = string.IsNullOrWhiteSpace(userName)
        ? await repository.GetGames()
        : await repository.GetGames(userName);

      var games = getGamesResponse.Sessions
          .OrderBy(s => s.Player1 == userName || s.Player2 == userName)
          .Select(s =>
          {
            var players = new[] { s.Player1, s.Player2 }
              .Where(p => !string.IsNullOrWhiteSpace(p))
              .ToArray();
            return new Game { GameName = s.Name, Players = players };
          });
      var response = new ListGamesResponse(ClientAction.ListGames)
      {
        Games = games ?? Array.Empty<Game>()
      };

      var serialized = JsonConvert.SerializeObject(response);
      logger.LogInformation("Socket Response \n{0}\n", new[] { serialized });
      await socket.SendTextAsync(serialized);
    }
  }
}