using POSV.Utils;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Timers;

namespace POSV
{
    public class DaHuaACS15AB
    {
        static SerialPortExtension serialPort = null;
        Timer timer = null;
        string portName;
        string baudRate;
        string dataBits;
        string stopBits;
        string parity;
        string handshake;

        static decimal _value = 0.00M;
        public static bool Open(string portName, string baudRate,
            string dataBits, string stopBits, string parity,
            string handshake)
        {
            serialPort = new SerialPortExtension();
            serialPort.ReceiveDataEvent -= DHACSReceiveDataEvent;
            serialPort.ReceiveDataEvent += DHACSReceiveDataEvent;
            var result = serialPort.Open(portName, baudRate, "8", "1", "0", "None");

            if (result)
            {
                serialPort.Send(new byte[1] { 0x50 });

                return true;
            }
            else
            {
                serialPort.Close();
                serialPort.DiscardOutBuffer();

                return false;
            }
        }

        public static decimal GetWeight(string portName, string baudRate)
        {
            _value = 0.00M;
            
            Open(portName, baudRate, "8", "1", "0", "None");
      
            System.Threading.Thread.Sleep(500);
            return _value;
        }

        private static void DHACSReceiveDataEvent(object sender, SerialPortEventArgs e)
        {
            var bytes = e.ReceivedBytes;
            try
            {
                var _str = System.Text.Encoding.ASCII.GetString(bytes);
                string[] _val = _str.Split(' ', 'K', 'G');
                _value = decimal.Parse(_val[1]) /1000 ;
            }
            catch (Exception ex)
            {

            }
            finally
            {
                if (serialPort != null)
                {
                    if (serialPort.IsOpen)
                    {
                        serialPort.Close();
                    }
                }
            }


            //模拟数据
            //var bytes = new byte[11] { 0x02, 0x20, 0x20, 0x30, 0x31, 0x2e, 0x33, 0x34, 0x20, 0x4b, 0x47 };
            //var hex = BitConverter.ToString(bytes, 0);
            //var recv = BitConverter.ToString(bytes).Replace("-", string.Empty);
            //logger.Info("收到大华ACS数据<{0}>", hex);
            //Console.WriteLine("Received Data<{0}>:{1} ", e.ReceivedBytes.Length, recv);


        }
    }
}