using HH.WCS.Mobox3.NFLZ.process;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HH.WCS.Mobox3.NFLZ.device
{
    internal class PlcHelper
    {
        internal static void Receive(string ip, string msg) {
            //处理设备信号
            DeviceProcess.Analysis(msg, ip);
        }
        internal static bool SendHex(string ip, string msg) {
            return TcpServer.TcpServerSend(ip, Hex2Bytes(msg));

        }
        internal static void SendAscii(string ip, string msg) {
            TcpServer.TcpServerSend(ip, Encoding.ASCII.GetBytes(msg));
        }

        internal static byte[] Hex2Bytes(string hexString) {
            hexString = hexString.Replace(" ", "");
            if ((hexString.Length % 2) != 0)
                hexString += " ";
            byte[] returnBytes = new byte[hexString.Length / 2];
            for (int i = 0; i < returnBytes.Length; i++)
                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);

            return returnBytes;
        }
        internal static string Hex2Ascii(string hexString) {
            hexString = hexString.Replace(" ", "");
            if ((hexString.Length % 2) != 0)
                hexString += " ";
            byte[] returnBytes = new byte[hexString.Length / 2];
            for (int i = 0; i < returnBytes.Length; i++)
                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);

            return Encoding.ASCII.GetString(returnBytes);
        }

        #region 进制转换+CRC
        internal static bool CheckCRC(string hex) {
            var result = false;
            var data = hex.Replace(" ", "");
            if (data.Length % 2 == 0) {
                var code1 = data.Substring(data.Length - 4, 4).ToLower();
                var code2 = BitConverter.ToString(CRC16LH(Hex2Bytes(data.Substring(0, data.Length - 4)))).Replace("-", "").Replace(" ", "").ToLower();
                result = code1 == code2;
            }
            return result;
        }
        internal static byte[] CRC16LH(byte[] pDataBytes) {
            ushort crc = 0xffff;
            ushort polynom = 0xA001;

            for (int i = 0; i < pDataBytes.Length; i++) {
                crc ^= pDataBytes[i];
                for (int j = 0; j < 8; j++) {
                    if ((crc & 0x01) == 0x01) {
                        crc >>= 1;
                        crc ^= polynom;
                    }
                    else {
                        crc >>= 1;
                    }
                }
            }

            byte[] result = BitConverter.GetBytes(crc);
            return result;
        }
        internal static byte[] CRC16HL(byte[] pDataBytes) {
            ushort crc = 0xffff;
            ushort polynom = 0xA001;

            for (int i = 0; i < pDataBytes.Length; i++) {
                crc ^= pDataBytes[i];
                for (int j = 0; j < 8; j++) {
                    if ((crc & 0x01) == 0x01) {
                        crc >>= 1;
                        crc ^= polynom;
                    }
                    else {
                        crc >>= 1;
                    }
                }
            }

            byte[] result = BitConverter.GetBytes(crc).Reverse().ToArray();
            return result;
        }

        #endregion
    }
}