using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Timers; 
namespace LeatherApp.Device
{
    public class LightDev : IDisposable
    {
        #region 第二款光源(Rsee) X86DLL 64位可用吗？
        //comHandle = RseeController_OpenCom(PortName, 19200, true);  //Com_Handle!=0成功
        [DllImport(@"RseeController.dll", EntryPoint = "RseeController_OpenCom", CallingConvention = CallingConvention.Cdecl)]
        private extern static IntPtr RseeController_OpenCom(string szPort, int Baud_rate, bool overlapped);

        //关闭传上面打开返回的comHandle
        [DllImport(@"RseeController.dll", EntryPoint = "RseeController_CloseCom", CallingConvention = CallingConvention.Cdecl)]
        private extern static bool RseeController_CloseCom(string szPort, IntPtr comHandle);

        //设置新值 channel通道号:1-4
        //[DllImport(@"RseeController.dll", EntryPoint = "RseeController_PM_D_BRTSetChannel", CallingConvention = CallingConvention.Cdecl)]
        //private extern static int RseeController_PM_D_BRTSetChannel(int comHandle, int channel, int range);

        ////读取当前值
        //[DllImport(@"RseeController.dll", EntryPoint = "RseeController_PM_D_BRTReadChannel", CallingConvention = CallingConvention.Cdecl)]
        //private static extern unsafe int RseeController_PM_D_BRTReadChannel(int comHandle, int channel, int* range);

        //AHC系列
        /// <summary>
        /// 设置通道亮度等级
        /// </summary>
        /// <param name="comHandle"></param> 
        /// <param name="channel">通道序号，范围：1-2</param>
        /// <param name="range">亮度等级，范围：0-255</param>
        /// <returns>0 - 设置发送成功; -1 - 串口未初始化; -2 - 输入参数范围有误</returns>
        [DllImport(@"RseeController.dll", EntryPoint = "RseeController_AHC_SetChannel", CallingConvention = CallingConvention.Cdecl)]
        private extern static int RseeController_AHC_SetChannel(IntPtr comHandle, int channel, int range);
        /// <summary>
        /// 读取通道亮度等级
        /// </summary>
        /// <param name="comHandle"></param> 
        /// <param name="channel">通道序号，范围：1-2</param>
        /// <returns>大于等于0 - 通道亮度等级; -1 – 串口/网口未初始化; -2 - 输入参数范围有误; -3 - 读取返回出错</returns>
        [DllImport(@"RseeController.dll", EntryPoint = "RseeController_AHC_ReadChannel", CallingConvention = CallingConvention.Cdecl)]
        private extern static int RseeController_AHC_ReadChannel(IntPtr comHandle, int channel);
        /// <summary>
        /// 设置一个通道常亮/常灭
        /// </summary>
        /// <param name="comHandle"></param>
        /// <param name="mode">state - 0：常灭，1：常亮</param>
        /// <returns></returns>
        [DllImport(@"RseeController.dll", EntryPoint = "RseeController_AHC_SetOnoff", CallingConvention = CallingConvention.Cdecl)]
        private extern static int RseeController_AHC_SetOnoff(IntPtr comHandle,  bool state); 

        #endregion
        private IntPtr Com_Handle;
        private LightDevNameEnum devName;
        private long portHandle;
        private string comName;
        /// <summary>
        /// 光源亮度值
        /// </summary>
        public int DigitalValue { get; private set; }

        public Action<DateTime,WarningEnum, string> WarningEvent;
        /// <summary>
        /// 光源亮度值<通道号,亮度值0-255>
        /// </summary>
        public Action<int, int> DigitalEvent;
        /// <summary>
        /// 是否打开设备成功
        /// </summary>
        public bool IsInit { get; private set; } = false;
        //private System.Timers.Timer timer = new System.Timers.Timer();
        public LightDev(LightDevNameEnum _devName)
        {
            devName = _devName;
        }
        public bool start(int comNum)
        {
            try
            {
                if (devName == LightDevNameEnum.海康)
                {
                    //int result = CreateSerialPort(comNum, ref portHandle);  //创建串口
                    //if (result != SUCCESS)
                    //    throw new Exception($"打开光源设备(COM{comNum})失败: {result}");
                }
                else if (devName == LightDevNameEnum.锐视)
                {
                    Com_Handle = RseeController_OpenCom("COM" + comNum, 19200, true);
                    if (Com_Handle == IntPtr.Zero)
                        throw new Exception($"打开光源设备(COM{comNum})失败;");

                    comName = "COM" + comNum;
                    //常亮
                    var res=RseeController_AHC_SetOnoff(Com_Handle,true);
                    WarningEvent?.Invoke(DateTime.Now, WarningEnum.Normal, "常亮res:" + res);
                }
                else
                    throw new Exception($"打开光源设备失败，未知设备型号！");

                IsInit = true;
                //timer.Elapsed += Timer_Elapsed;
                //timer.Interval = 100;
                //timer.Enabled = true;

                return true;
            }
            catch (Exception ex)
            {
                WarningEvent?.Invoke(DateTime.Now,WarningEnum.High, ex.Message);
                return false;
            }
        }
        public void stop()
        {
            if (!IsInit) return;
            try
            {
                IsInit = false;
                //timer.Elapsed -= Timer_Elapsed;
                //timer.Stop();
                if (devName == LightDevNameEnum.海康)
                    ;
                //ReleaseSerialPort(portHandle);  //断开串口 
                else if (devName == LightDevNameEnum.锐视)
                    RseeController_CloseCom(comName, Com_Handle);
            }
            catch { }
        }
        public unsafe int getDigitalValue(int channelIndex)
        {
            if (!IsInit) return -1;

            int value = 0;
            if (devName == LightDevNameEnum.海康)
            {
                //if (GetDigitalValue(ref value, channelIndex, portHandle) != SUCCESS)
                    return -1;
            }
            else if (devName == LightDevNameEnum.锐视)
            {
                value = RseeController_AHC_ReadChannel(Com_Handle, channelIndex);
                if (value<0)
                    return -1;
            }
            else
                return -1;

            DigitalEvent?.Invoke(channelIndex, value);
            return value;
        }
        /// <summary>
        /// 设置亮度值 
        /// </summary>
        /// <param name="channelIndex">通道</param>
        /// <param name="value">0-255</param>
        /// <returns></returns>
        public bool setDigitalValue(int channelIndex, int value)
        {
            if (!IsInit) return false;
            //Task.Factory.StartNew(() => {
                if (devName == LightDevNameEnum.海康)
                {
                    //if (SetDigitalValue(channelIndex, value, portHandle) != SUCCESS)
                        return false;
                }
                else if (devName == LightDevNameEnum.锐视)
                {
                    var res = RseeController_AHC_SetChannel(Com_Handle, channelIndex, value);
                    WarningEvent?.BeginInvoke(DateTime.Now,WarningEnum.Normal, res.ToString(),null,null);
                    if (res != 0)
                        return  false;
                }
            //});

            return true;
        }

        private void Timer_Elapsed(object sender, ElapsedEventArgs e)
        {
            if (!IsInit) return;

        }


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