using System;
using System.IO;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Threading.Channels;
using System.Linq;
using System.Net.Http;
using System.Collections.Generic;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Net;
using System.Net.Sockets;
using System.Diagnostics;
using ProtoDataBuff;
using MultiDup;
using pb = global::Google.Protobuf;

namespace clientTest.multiDup

{

    class Program
    {
        static readonly Random r = new Random();

        /// <summary>
        /// 消息分发
        /// </summary>
        static private Dictionary<eProtocalCommand, Action<sSocketData>> callbacks = new Dictionary<eProtocalCommand, Action<sSocketData>>();
        static  void Main(string[] args)
        {

            callbacks.Add(eProtocalCommand.ScMdGetRoomList, On_update);
            callbacks.Add(eProtocalCommand.ScMdEnterRoom, On_enter);
            callbacks.Add(eProtocalCommand.ScMdBeginDup, On_begin);
            callbacks.Add(eProtocalCommand.ScMdLeaveRoom, On_GameOver);
            callbacks.Add(eProtocalCommand.ScMdCreateRoom, On_CreateRoom);
            var n = 1;
            var list = new Task[n];
            for (int i = 0; i < n; i++)
            {
                list[i] = Task.Run(async () => await send());
            }
              Task.Run(Dispatch);

            Task.WaitAll(list);
        }


        #region 收到消息处理
        /// <summary>
        /// 更新房间列表
        /// </summary>
        static void On_update(sSocketData data)
        {
            Console.WriteLine("最新房间列表: {}");
        }
        /// <summary>
        /// 客户端进入房间
        /// </summary>
        static void On_CreateRoom(sSocketData data)
        {
            Console.WriteLine("xxx创建了房间.");
        }
        /// <summary>
        /// 客户端进入房间
        /// </summary>
        static void On_begin(sSocketData data)
        {
            Console.WriteLine("xxx开始了游戏.");
        }
        /// <summary>
        /// 客户端进入房间
        /// </summary>
        static void On_enter(sSocketData data)
        {
            Console.WriteLine("xx进入了房间.");
        }
        /// <summary>
        /// 处理客户端上报伤害请求
        /// </summary>
        static void On_GameOver(sSocketData data)
        {
            Console.WriteLine("xx已离开房间! ");
            Task.Delay(3000).ContinueWith(t => Environment.Exit(0));
        }

        #endregion

        static async Task send()
        {

            var port = 6004;

            var endPoint = new IPEndPoint(IPAddress.Parse("192.168.10.17"), port);
            //var endPoint = new IPEndPoint(IPAddress.Loopback, port);
            //var endPoint = new IPEndPoint(IPAddress.Parse("115.159.121.129"), port);

            using (var client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
            {
                try
                {
                    await client.ConnectAsync(endPoint);
                }
                catch (Exception ee)
                {
                    Debug.WriteLine(ee.Message);
                }


                var t = Task.Run(() => recv(client));                    // 开启recv监听协程
                try
                {
                    // 连上来之后, 创建房间, 开始游戏, 退出房间
                     CreateRoom(client).Wait();
                    Thread.Sleep(r.Next(1000, 3000));
                    await BeginGame(client);
                    Thread.Sleep(r.Next(1000, 3000));
                    await LeaveGame(client);
                    Thread.Sleep(r.Next(1000, 3000));
                    Console.ReadKey();
                }
                catch (Exception e)
                {
                    client.Close();
                }
                finally
                {
                    client.Close();
                }

            }
        }
        /// <summary>
        /// 创建房间
        /// </summary>
        /// <param name="Sock"></param>
        /// <returns></returns>
        async static Task CreateRoom(Socket Sock)
        {
            try
            {
                var msg = new CS_MD_CreateRoom() { };
                var data = SocketDataToBytes(BytesToSocketData(eProtocalCommand.CsMdCreateRoom, IMsg2Bytes(msg)));
                await Sock.SendAsync(new ArraySegment<byte>(data), SocketFlags.None);
            }
            catch (Exception e)
            {
                Sock.Close();
            }
        }
        /// <summary>
        /// 开始游戏
        /// </summary>
        /// <param name="sock"></param>
        /// <returns></returns>
        async static Task BeginGame(Socket sock)
        {
            var msg = new CS_MD_BeginDup() { };

            var data = SocketDataToBytes(BytesToSocketData(eProtocalCommand.CsMdBeginDup, IMsg2Bytes(msg)));
            await sock.SendAsync(new ArraySegment<byte>(data), SocketFlags.None);
        }

        /// <summary>
        /// 离开游戏
        /// </summary>
        /// <param name="sock"></param>
        /// <returns></returns>
        async static Task LeaveGame(Socket sock)
        {
            var msg = new CS_MD_LeaveRoom() { };

            var data = SocketDataToBytes(BytesToSocketData(eProtocalCommand.CsMdLeaveRoom, IMsg2Bytes(msg)));
            await sock.SendAsync(new ArraySegment<byte>(data), SocketFlags.None);
        }


        #region 消息收发

        static byte[] IMsg2Bytes(pb::IMessage msg)
        {
            using var ms = new MemoryStream();
            using var goutstream = new pb::CodedOutputStream(ms);
            msg.WriteTo(goutstream);
            goutstream.Flush();
            ms.Seek(0, SeekOrigin.Begin);
            return ms.ToArray();
        }



        static async void Dispatch()
        {
            while (true)
            {
                var msg = await recvDataBuffer.Reader.ReadAsync();
                if (callbacks.ContainsKey(msg._protocallType))
                {
                    callbacks[msg._protocallType](msg);
                }
                else
                {
                    // 未找到消息处理逻辑
                    Console.WriteLine("未识别的消息类型:" + msg._protocallType.ToString());
                }
            }
            Console.WriteLine("dispatch 已退出");
        }

        /// <summary>
        /// 向客户端写入消息
        /// </summary>
        static async void WriteToserver(Socket Sock)
        {
            while (true)
            {
                var msg = await sendDataBuffer.Reader.ReadAsync();
                var data = SocketDataToBytes(msg);
                await Sock.SendAsync(new ArraySegment<byte>(data), SocketFlags.None);
            }
        }
        /// <summary>
        /// 网络结构转数据
        /// </summary>
        /// <param name="tmpSocketData"></param>
        /// <returns></returns>
        static private byte[] SocketDataToBytes(sSocketData tmpSocketData)
        {
            byte[] _tmpBuff = new byte[tmpSocketData._buffLength];
            byte[] _tmpBuffLength = BitConverter.GetBytes(tmpSocketData._buffLength);
            byte[] _tmpDataLenght = BitConverter.GetBytes((UInt16)tmpSocketData._protocallType);

            Array.Copy(_tmpBuffLength, 0, _tmpBuff, 0, Constants.HEAD_DATA_LEN);//缓存总长度
            Array.Copy(_tmpDataLenght, 0, _tmpBuff, Constants.HEAD_DATA_LEN, Constants.HEAD_TYPE_LEN);//协议类型
            Array.Copy(tmpSocketData._data, 0, _tmpBuff, Constants.HEAD_LEN, tmpSocketData._dataLength);//协议数据

            return _tmpBuff;
        }


        /// <summary>
        /// 数据转网络结构
        /// </summary>
        /// <param name="_protocalType"></param>
        /// <param name="_data"></param>
        /// <returns></returns>
        static private sSocketData BytesToSocketData(eProtocalCommand _protocalType, byte[] _data)
        {
            sSocketData tmpSocketData = new sSocketData();
            tmpSocketData._buffLength = Constants.HEAD_LEN + _data.Length;
            tmpSocketData._dataLength = _data.Length;
            tmpSocketData._protocallType = _protocalType;
            tmpSocketData._data = _data;
            return tmpSocketData;
        }


        /// <summary>
        /// 接收buffer
        /// </summary>
        static private Channel<sSocketData> recvDataBuffer = Channel.CreateUnbounded<sSocketData>();
        /// <summary>
        /// 发送buffer
        /// </summary>
        static private Channel<sSocketData> sendDataBuffer = Channel.CreateUnbounded<sSocketData>();

        /// <summary>
        /// 接收客户端发来的信息，客户端套接字对象
        /// </summary>
        /// <param name="socketclientpara"></param>    
        static async void recv(Socket socketServer)
        {
            socketServer.ReceiveTimeout = 800;                                             // 接收等待超时时间设为800毫秒
            var _databuffer = new DataBuffer();
            byte[] arrServerRecMsg = new byte[4096];                                       // 创建一个内存缓冲区，其大小为4k字节  
            while (true)
            {
                try
                {
                    var length = await socketServer.ReceiveAsync(new ArraySegment<byte>(arrServerRecMsg), SocketFlags.None);   // 将接收到的信息存入到内存缓冲区，并返回其字节数组的长度    
                    if (length <= 0)                                                      // 视为客户端已经close连接
                    {
                        break;
                    }
                    _databuffer.AddBuffer(arrServerRecMsg, length);                        //将收到的数据添加到缓存器中
                    while (_databuffer.GetData(out sSocketData _socketData))                         //取出一条完整数据
                    {
                        Console.WriteLine("recv: " + _socketData._protocallType);
                        await recvDataBuffer.Writer.WriteAsync(_socketData);                 // 放入channel
                    }
                    Array.Clear(arrServerRecMsg, 0, length);
                }
                catch (SocketException e)
                {
                    if (e.ErrorCode == 10060)                                          // 超时的时候错误号码是10060
                    {
                        continue;                                                      // 继续等待  
                    }
                    break;
                }
                catch (Exception)
                {
                    break;
                }
            }
            Console.WriteLine("recv 已退出");
            socketServer.Close();                                                     // 关闭之前accept出来的和客户端进行通信的套接字 
        }

        #endregion
    }


}