using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace demo.ExternalDevices
{
    class SktPacket
    {
        private static SktPacket m_instance = new SktPacket();
        /// <summary>
        /// 单件类访问接口
        /// </summary>
        /// <returns></returns>
        public static SktPacket Instance
        {
            get { return m_instance; }
            private set { m_instance = value; }
        }

        public static bool InitSocket()
        {
            return 0 == skt.skt_init() ? true : false;
        }

        public static bool SktConnect(int sktHandle)
        {
            return 0 == skt.skt_conn(sktHandle) ? true : false;
        }

        public static bool SktDisConnect(int sktHandle)
        {
            return 0 == skt.skt_disconn(sktHandle) ? true : false;
        }

        public static bool SktClose(int sktHandle)
        {
            return 0 == skt.skt_close(sktHandle) ? true : false;
        }

        public static bool CreateClient(string ip ,ushort port, ref int sktHandle)
        {            
            sktHandle = skt.create_c(ip, port);
            return (int)EMSocketStatus.SOCKET_CONNECTED == skt.skt_status(sktHandle) ? true : false;
        }

        public static bool CreateServer(string ip, ushort port, ref int sktHandle)
        {
            sktHandle = skt.create_s(ip, port);
            return (int)EMSocketStatus.SOCKET_DISCONNECTED == sktHandle ? false : true;
        }

        public static bool SendMsg(int sktHandle, string msg)
        {
            if ((int)EMSocketStatus.SOCKET_CONNECTED != skt.skt_status(sktHandle))
            {
                return false;
            }
            int ret = skt.skt_send(sktHandle, msg, msg.Length);
            return ret == msg.Length ? true : false;
        }

        public static bool SendMsg(int sktHandle, byte[] cmd)
        {
            if ((int)EMSocketStatus.SOCKET_CONNECTED != skt.skt_status(sktHandle))
            {
                return false;
            }
            string msg = Encoding.UTF8.GetString(cmd);
            return msg.Length == skt.skt_send(sktHandle, msg, msg.Length) ? true : false;
        }

        public static bool RecvMsg(int sktHandle, ref string msg, uint timeout = 0xFFFFFFFF)
        {
            if ((int)EMSocketStatus.SOCKET_CONNECTED != skt.skt_status(sktHandle))
            {
                return false;
            }
            StringBuilder sb = new StringBuilder(256);
            int ret = skt.skt_recv(sktHandle, sb, 256, timeout);
            string recvMsg = sb.ToString();
            return ret == recvMsg.Length ? true : false;
        }
    }
}