using Invengo.Foundation.Util;
using log4net;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;


namespace GDNXFD.WcfService
{
    public class SocetClient
    {
        #region 单例方法

        public static SocetClient Instance
        {
            get { return SingletonCreator.instance; }
        }

        class SingletonCreator
        {
            internal static readonly SocetClient instance = new SocetClient();

        }

        #endregion

        private static ILog logger = LogManager.GetLogger("AppInfoLog");

        private IPAddress _serverAddress = IPAddress.Parse("172.168.1.19");
        private int _serverPort = 5050;
        private Socket _sock;

        private void Connect()
        {
            try
            {
                if (_sock == null)
                {
                    _sock = new Socket(_serverAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
                }

                if (_sock.Connected)
                    return;

                _sock.Connect(_serverAddress, _serverPort);
            }
            catch (Exception ex)
            {
                logger.WarnFormat("连接服务器失败！错误原因：{0}", ex.Message);
                _sock.Close();
                _sock = null;
            }
        }

        private void ProcessConnect(IAsyncResult ar)
        {
            if (_sock != null && _sock.Connected)
            {
                logger.Info("连接服务器成功！");
                //_sock.BeginReceive(_receiveBuffer, 0, MAX_BUFFER_SIZE, SocketFlags.None, ProcessReceive, null);
            }
            else
            {
                logger.WarnFormat("连接服务器失败！");
                CloseSocket();
            }
        }


        private void CloseSocket()
        {
            if (_sock != null)
            {
                //_sock.Shutdown(SocketShutdown.Send);
                _sock.Close();
                _sock = null;
                logger.Info("连接断开！");
            }
        }

        public void Send(byte[] msgBody)
        {

            byte[] frameB = new byte[] { 0x5a, 0x5a, 0x01, 0x01 };
            byte[] lenB = BitConverter.GetBytes((short)(msgBody.Length + 6));
            byte[] buffer = new byte[msgBody.Length + 6];
            Array.Copy(frameB, buffer, 4);
            Array.Copy(lenB, 0, buffer, 4, 2);
            Array.Copy(msgBody, 0, buffer, 6, msgBody.Length);

            Connect();

            if (_sock == null || !_sock.Connected)
            {
                logger.Info("发送失败！尚未建立与服务器的连接");
                CloseSocket();
                return;
            }

            try
            {
                _sock.BeginSend(buffer, 0, buffer.Length, SocketFlags.None, ProcessSend, buffer);

            }
            catch (Exception ex)
            {
                logger.ErrorFormat("发送失败！异常：{0}", ex.Message);
            }
        }

        private void ProcessSend(IAsyncResult iar)
        {
            byte[] buffer = (byte[])(iar.AsyncState);
            string hexString = CodeConvert.BytesToHexString(buffer, " ");
            logger.Info("发送数据：" + hexString);
        }

    }
}