using System;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Threading;
using LeatherApp.Utils;
using Models;
using OpenCvSharp;
using OpenCvSharp.Extensions;
using S7.Net;

namespace LeatherApp.Device
{
    /// <summary>
    /// PLC操作类
    /// </summary>
    public class PLCDev : IDisposable
    {
        private Plc devPlc; 
        public Action<DateTime,WarningEnum, string> WarningEvent;
        /// <summary>
        /// 运行状态
        /// </summary>
        public Action<bool> RuningStateChangeEvent;
        /// <summary>
        /// 是否打开设备成功
        /// </summary>
        public bool IsInit { get; private set; } = false;

        private Thread t_task1;

        public bool? devRunningState { get; private set; }
        public PLCDev()
        {
        } 
        public bool start(CpuType cpu, string iPAdrees, short rack, short slot)
        {
            try
            {
                devPlc = new Plc(cpu, iPAdrees, rack, slot);
                devPlc.Open();
                if (!devPlc.IsConnected) throw new Exception("Plc连接失败！");

                IsInit = true; 

                t_task1 = new System.Threading.Thread(run1);
                t_task1.IsBackground = true;
                t_task1.Start();
                 
                return true;
            }
            catch (Exception ex)
            {
                WarningEvent?.BeginInvoke(DateTime.Now,WarningEnum.High, ex.Message,null,null);
                return false;
            }
        }
        public void stop()
        {
            if (!IsInit) return;

            try
            {
                IsInit = false;
                //timer.Elapsed -= Timer_Elapsed; 
                if (t_task1 != null)
                {
                    bool b = t_task1.Join(1000);
                    if (!b) t_task1.Abort();
                    t_task1 = null;
                }
                devPlc.Close();
            }
            catch { }
        }
  
        private void run1()
        { 
            while (IsInit)
            {
                //1.3
                bool res = (Boolean)devPlc.Read("DB3.DBX1.3");
                if (devRunningState == null || devRunningState != res)
                {
                    devRunningState = res;
                    RuningStateChangeEvent?.Invoke(res);
                }
                Thread.Sleep(100);
            }
        }
        /// <summary>
        /// 启动DEV
        /// </summary>
        public void runDev()
        {
            if (IsInit)
            {
                devPlc.Write("DB3.DBX0.1", false);
                devPlc.Write("DB3.DBX0.0", true);//启动
            }
        } 
        /// <summary>
        /// 停止DEV
        /// </summary>
        public void pauseDev()
        {
            if (IsInit)
            {
                devPlc.Write("DB3.DBX0.0", false);
                devPlc.Write("DB3.DBX0.1", true);//停止
            }
        }
        //private void callback(PhotoTask task)
        //{
        //    //返回成功/失败,异步调用 
        //    if (task.finishEvent != null || (task.finishEvent = finishEvent) != null)
        //        //task.finishEvent.BeginInvoke(result, errInfo, res => task.finishEvent.EndInvoke(res), null);
        //        System.Threading.ThreadPool.QueueUserWorkItem(waitCallback, task);
        //}
        ////异步回调
        //WaitCallback waitCallback = new WaitCallback(o =>
        //{
        //    var task = (PhotoTask)o;
        //    task.finishEvent(task);
        //});


        public void Dispose()
        {
            stop();
        }
    }
}