using Chat.Framework;
using Chat.Framework.WXSdk.Implement;
using socket.core.Client;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace Chat.Framework.WXSdk.IPAD
{
    public class Push
    {
        private TcpPushClient client;
        Random random = new Random();
        DnsEndPoint hostEndPoint;
        public Push(DnsEndPoint hostEndPoint, WeixinBase weixin)
        {
            this.weixin = weixin;
            client = new TcpPushClient(0x20000);
            client.OnConnect += Client_OnConnect;
            client.OnReceive += Client_OnReceive;
            client.OnSend += Client_OnSend;
            client.OnClose += Client_OnClose;
            this.hostEndPoint = hostEndPoint;
        }
        public bool Connect()
        {
            client.Connect(hostEndPoint.Host, hostEndPoint.Port);
            return client.Connected;
        }
        public void ClearPack()
        {
            lock (mPackDic)
            {
                var vas = mPackDic.ToList().Where(f => f.Value.Time < DateTime.Now.AddMinutes(-5));
                foreach (var item in vas)
                {
                    mPackDic.Remove(item.Key);
                }
            }
        }
        private void Client_OnClose()
        {
            Console.WriteLine($"Push断开");
        }

        private void Client_OnReceive(byte[] obj)
        {
            //Console.WriteLine($"Push接收长度[{obj.Length}]     {random.Next(1, 9999)}");
            DePack(obj);
        }

        /// <summary>
        /// 通过seq取微信服务器返回的socket包数据
        /// </summary>
        /// <param name="Seq"></param>
        /// <returns></returns>
        public byte[] GetBuffBySeq(int Seq)
        {

            lock (mPackDicLock)
            {
                //Thread.Sleep(10);
                byte[] buf = null;
                try
                {
                    if (mPackDic.ContainsKey(Seq))
                    {
                        buf = mPackDic[Seq].Data;
                        mPackDic.Remove(Seq);
                        return buf;
                    }
                }
                catch (Exception ee)
                {
                    LogHelper.GetSingleObj().Error("Wechat GetBuffBySeq", $"{weixin.WeixinHao}- 获取超时!{ee.Message}");
                }
                return buf;
            }
        }

        private void Client_OnConnect(bool obj)
        {
           // Console.WriteLine($"Push连接{obj}");
        }
        public bool connected
        {
            get
            {
                return client == null ? false : client.Connected;
            }
        }
        private void Client_OnSend(int obj)
        {
           // LogHelper.GetSingleObj().Info("发送成功");
        }
        public void AsynSend(byte[] data,string text="")
        {
            //Console.WriteLine("1111111111");
            client.Send(data, 0, data.Length,text);
  
        }
        public void AsynSend(byte[] data, int offset, int length)
        {
            client.Send(data, offset, length);
        }

        public void Disconnect()
        {
            client.Close();

        }
        private object mPackDicLock = new object();
        private byte[] packageData = null;
        public bool DePack(byte[] bys)
        {

            bool result = false;
            int x = bys.Length;

            if (packageData != null)
            {
                byte[] temp = new byte[packageData.Length + x];
                Buffer.BlockCopy(packageData, 0, temp, 0, packageData.Length);
                Buffer.BlockCopy(bys, 0, temp, packageData.Length, x);
                packageData = temp;
            }
            else
            {
                packageData = new byte[x];
                Buffer.BlockCopy(bys, 0, packageData, 0, x);
            }

            while (packageData != null && packageData.Length > 16)
            {
                int newPackageLength = WXClientTool.ReadInt(packageData, 0);
                if (newPackageLength <= 0 || newPackageLength > 8000000)
                {
                    LogHelper.GetSingleObj().Error("Wechat DePack", "长度不合法");
                    packageData = null;
                }
                else if (newPackageLength <= packageData.Length)
                {
                    byte[] newPackage = new byte[newPackageLength];
                    Buffer.BlockCopy(packageData, 0, newPackage, 0, newPackageLength);
                    if (newPackageLength < packageData.Length)
                    {
                        byte[] temData = new byte[packageData.Length - newPackageLength];
                        Buffer.BlockCopy(packageData, newPackageLength, temData, 0, packageData.Length - newPackageLength);
                        packageData = temData;
                    }
                    else
                    {
                        packageData = null;
                    }
                    HandlePackage(newPackage);
                }
                else
                {
                    break;
                }
            }
            return result;

        }

        //解析包
        public void HandlePackage(byte[] bys)
        {
            if (bys.Length == 20 && bys[3] == 20 && bys[5] == 16 && bys[7] == 1)
            {
                // 有新消息就会接受到此包
                SaveBufferToPackDic(bys);
                return;
            }
            else
            {
                if (bys.Length >= 16 && bys[16] != (byte)191
                   && !(bys[3] == 58 && bys[5] == 16 && bys[7] == 1 && bys.Length == 58)
                   && !(bys[3] == 47 && bys[5] == 16 && bys[7] == 1 && bys.Length == 47))
                {
                    return;
                }
                SaveBufferToPackDic(bys);
            }
        }
        class SocketResult
        {
            public DateTime Time { get; set; }
            public byte[] Data { get; set; }
        }
        Dictionary<int, SocketResult> mPackDic = new Dictionary<int, SocketResult>();
        public WeixinBase weixin;
        public Func<byte[], bool> NotifyCallback { get; set; }
        // int Seq = 0;
        //保存数据到mPackDic
        public void SaveBufferToPackDic(byte[] bys)
        {
            lock (mPackDicLock)
            {
                var Seq = WXClientTool.ReadInt(bys, 12);
                if (Seq == 0)
                {
                    byte[] buffers = new byte[bys.Length];
                    Buffer.BlockCopy(bys, 0, buffers, 0, bys.Length);

                    int cmd = WXClientTool.ReadInt(buffers, 8);
                    int selector = WXClientTool.ReadInt(buffers, 16);
                    LogHelper.GetSingleObj().Info("Wechat SaveBufferToPackDic", $"{weixin.WeixinHao}-收到{buffers.Length}字节!");
                    if (cmd == 318 && NotifyCallback != null)
                    {
                        NotifyCallback(buffers);
                    }

                    if (cmd == 24 && NotifyCallback != null)
                    {
                        NotifyCallback(buffers);
                    }

                    if (cmd != 24 && cmd != 318)
                    {
                    }
                }
                else
                {
                    byte[] buffers = new byte[bys.Length];
                    Buffer.BlockCopy(bys, 0, buffers, 0, bys.Length);
                    mPackDic[Seq] = new SocketResult() { Data = buffers, Time = DateTime.Now };
                    Seq = 0;
                }

            }

        }

    }
}