using System;
using System.Collections.Generic;
using System.Configuration;
using System.Globalization;
using System.IO;
using System.IO.Ports;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace FlyDockTool
{
    public class SerialPortOption
    {
        /// <summary>
        ///     让此类创建一个串口操作的单例类
        /// </summary>
        public static SerialPortOption Instance; //申明一个EcgDrawing对象，复制Null
        public static int BufferBytesLength = 0;
        private Thread _thSerialPortDataRead; //串口数据读取线程
        public SerialPort DataReadSerialPort;
        public DateTime SerialTime;
        private static readonly object LockHelper = new object();
        public EventHandler dataOutPutShow;
        public static SerialPortOption CreateInstance()
        {
            if (Instance == null)
                lock (LockHelper)
                {
                    if (Instance == null)
                        Instance = new SerialPortOption();
                }
            return Instance;
        }

        /// <summary>
        ///     初始化串口
        /// </summary>
        public void IniserialPortOption()
        {
            //数据读取串口 初始化
            //CcgDataReadSerialPort = new SerialPort(ConfigHelper.EcgDataComPort, 1500000, Parity.None, 8, StopBits.One)

           // string CurrentDevice = ConfigurationManager.AppSettings["CurrentDevice"];//获取设备信息URL
            string comName= ConfigurationManager.AppSettings[apiOptions.CurrentDevice].Split(',')[3];
            int baudRate= int.Parse(ConfigurationManager.AppSettings[apiOptions.CurrentDevice].Split(',')[4]);
            string parity1= ConfigurationManager.AppSettings[apiOptions.CurrentDevice].Split(',')[5];
            Parity parity = Parity.None;
            if (parity1.ToUpper()== "NONE")
                parity= Parity.None;
            if (parity1.ToUpper() == "EVEN")
                parity = Parity.Even;
            int databits= int.Parse(ConfigurationManager.AppSettings[apiOptions.CurrentDevice].Split(',')[6]);
            StopBits SB = StopBits.One;
            string sb1 = ConfigurationManager.AppSettings[apiOptions.CurrentDevice].Split(',')[7];
            if (sb1== "1")
                SB = StopBits.One;
            if (sb1.ToUpper() == "NONE")
                SB = StopBits.None;
            if (sb1.ToUpper() == "2")
                SB = StopBits.Two; 
            DataReadSerialPort = new SerialPort(comName, baudRate, parity, databits, SB)
            {
                RtsEnable = false,
                ReadBufferSize = 4096000,
                ReadTimeout = 3000,
                ReceivedBytesThreshold = 1
            };
            SerialTime = DateTime.Now;
        }

        /// <summary>
        /// 下发AD启动指令
        /// </summary>
        public void writeStartAD_Command()
        {
            byte[] EcgStart = { 0xBB, 0x44, 0xAA, 0x55, 0xCC, 0x01, 0x00, 0x00, 0xCB, 0x02 }; 
            if (!DataReadSerialPort.IsOpen)
                DataReadSerialPort.Open();
            DataReadSerialPort.Write(EcgStart, 0, EcgStart.Length);
        }

        /// <summary>
        ///     下发AD停止命令
        /// </summary>
        public void writeStopAD_Command()
        {
            byte[] EcgEnd = { 0xBB, 0x44, 0xAA, 0x55, 0x02, 0x00, 0x00, 0xCC, 0x02 }; 
            if (!DataReadSerialPort.IsOpen)
            {
                DataReadSerialPort.Open();
            }
            DataReadSerialPort.Write(EcgEnd, 0, EcgEnd.Length);
        }

        /// <summary>
        ///     终止串口数据读取的线程
        /// </summary>
        public void StopDataReadThread()
        {
            _thSerialPortDataRead.Abort();
        }

        /// <summary>
        ///     开启串口数据读取的线程
        /// </summary>
        public void StartDataReadThread()
        {
            _thSerialPortDataRead = new Thread(DataRead)
            {
                IsBackground = true,
                Priority = ThreadPriority.Highest
            };
            _thSerialPortDataRead.Start();
        }

        /// <summary>
        /// 读取串口数据
        /// </summary>
        private void DataRead()
        {
            while (true)
            {
                try
                {
                    if (!DataReadSerialPort.IsOpen)
                    {
                        DataReadSerialPort.Open();
                    }
                    BufferBytesLength = DataReadSerialPort.BytesToRead;
                    if (BufferBytesLength > 0)
                    {
                        var buffer = new byte[BufferBytesLength];
                        DataReadSerialPort.Read(buffer, 0, BufferBytesLength);
                        string encodingStr = "UTF-8";
                        try
                        {
                            encodingStr = ConfigurationManager.AppSettings[apiOptions.CurrentDevice].Split(',')[8];
                        }
                        catch { }
                        string ReDataStr = Encoding.GetEncoding(encodingStr).GetString(buffer);
                        dataOutPutShow(ReDataStr, null);
                    }
                }
                catch { }
                Thread.Sleep(1000);//睡眠1秒
            }
        }

   


    }
}