using System;
using System.Collections.Generic;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Quartz;
using WIDESEAWCS_QuartzJob;

namespace WIDESEAWCS_Tasks
{
    public class SerialPortJob : JobBase, IJob
    {
        public enum CommandType
        {
            None = 0,
            Get = 1,
            Set = 2,
        }
        private SerialPort serialPort;
        private CommandType commandType = CommandType.None;
        private string commandGet = "";//读值
        private string commandSet = "";//设值
        private string setOK = "";
        private string getOK = "";
        public Task Execute(IJobExecutionContext context)
        {
            try
            {
                if (serialPort == null) { serialPort = new SerialPort("COM1"); serialPort.DataReceived += SerialPort_DataReceived;}
                if (!serialPort.IsOpen)
                {
                    serialPort.Open();

                    serialPort.Write(commandSet);//打开串口时先设值
                    commandType = CommandType.Set;
                }
                switch (commandType)
                {
                    case CommandType.Get:
                        serialPort.Write(commandGet);
                        break;
                    case CommandType.Set:
                        serialPort.Write(commandSet);
                        break;
                }
            }
            catch (Exception ex) { }            return Task.CompletedTask;
        }
        private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            byte[] buffers = new byte[1024];
            while (serialPort.BytesToRead > 0)
            {
                serialPort.Read(buffers, 0, serialPort.BytesToRead > buffers.Length ? buffers.Length : serialPort.BytesToRead);
                string data = Encoding.Default.GetString(buffers);
                if (data.Contains(setOK) && commandType == CommandType.Set)
                {
                    commandType = CommandType.Get;
                }
                else if (data.Contains(getOK) && commandType == CommandType.Get)
                {
                    commandType = CommandType.Set;
                }
            }
        }
    }
}