/*
 * Copyright 2023 Eduard Kargin <kargin.eduard@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using NLog;
using Ragon.Protocol;
using Ragon.Server.IO;
using Ragon.Server.Lobby;
using Ragon.Server.Plugin;
using Ragon.Server.Plugin.Web;
using Ragon.Server.Room;

namespace Ragon.Server.Handler;

public sealed class RoomCreateOperation : BaseOperation
{
  private readonly RagonRoomParameters _roomParameters = new();
  private readonly Logger _logger = LogManager.GetCurrentClassLogger();
  private readonly IServerPlugin _serverPlugin;
  private readonly RagonWebHookPlugin _ragonWebHookPlugin;

  public RoomCreateOperation(RagonBuffer reader, RagonBuffer writer, IServerPlugin serverPlugin, RagonWebHookPlugin ragonWebHook) : base(reader, writer)
  {
    _serverPlugin = serverPlugin;
    _ragonWebHookPlugin = ragonWebHook;
  }

  public override void Handle(RagonContext context, NetworkChannel channel)
  {
    if (context.ConnectionStatus == ConnectionStatus.Unauthorized)
    {
      _logger.Warn($"Player {context.Connection.Id} not authorized for this request");
      return;
    }

    var custom = Reader.ReadBool();
    var roomId = Guid.NewGuid().ToString();

    if (custom)
    {
      roomId = Reader.ReadString();
      if (context.Lobby.FindRoomById(roomId, out _))
      {
        Writer.Clear();
        Writer.WriteOperation(RagonOperation.JOIN_FAILED);
        Writer.WriteString($"Room with id {roomId} already exists");

        var sendData = Writer.ToArray();
        context.Connection.Reliable.Send(sendData);

        _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} join failed to room {roomId}, room already exist");
        return;
      }
    }

    _roomParameters.Deserialize(Reader);

    var information = new RoomInformation()
    {
      Scene = _roomParameters.Scene,
      Max = _roomParameters.Max,
      Min = _roomParameters.Min,
    };

    var lobbyPlayer = context.LobbyPlayer;
    var roomPlayer = new RagonRoomPlayer(context.Connection, lobbyPlayer.Id, lobbyPlayer.Name);

    var roomPlugin = _serverPlugin.CreateRoomPlugin(information);
    var room = new RagonRoom(roomId, information, roomPlugin);

    roomPlayer.OnAttached(room);

    context.Scheduler.Run(room);
    context.Lobby.Persist(room);
    context.SetRoom(room, roomPlayer);

    _ragonWebHookPlugin.RoomCreated(context, room, roomPlayer);

    _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} create room {room.Id} with scene {information.Scene}");

    JoinSuccess(roomPlayer, room, Writer);

    _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} joined to room {room.Id}");
  }

  private void JoinSuccess(RagonRoomPlayer player, RagonRoom room, RagonBuffer writer)
  {
    writer.Clear();
    writer.WriteOperation(RagonOperation.JOIN_SUCCESS);
    writer.WriteString(room.Id);
    writer.WriteString(player.Id);
    writer.WriteString(room.Owner.Id);
    writer.WriteUShort((ushort)room.PlayerMin);
    writer.WriteUShort((ushort)room.PlayerMax);
    writer.WriteString(room.Scene);

    var sendData = writer.ToArray();
    player.Connection.Reliable.Send(sendData);
  }
}