using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace Ips.Cfq.SetFreqBySerialPort.Cli
{
    /// <summary>
    /// 4通道变频器
    /// </summary>
    public class CH4BPQ
    {
        readonly string rem_on = "<REM_ON\r";
        readonly string cfreq = "<CF{0}_{1}\r";
        readonly int tryCount = 3;                  //控制失败后的尝试次数

        SerialPortDevice _device;
        public CH4BPQ(SerialPortDevice device)
        {
            _device = device;
        }

        /// <summary>
        /// 打开远控
        /// </summary>
        /// <param name="errmsg"></param>
        /// <returns></returns>
        bool RemOn(ref String errmsg)
        {
            bool result;
            if (_device.SendCommand(rem_on, ref errmsg))
            {
                string result2 = _device.GetOutString();
                result = result2.Contains("REM_ON");
            }
            else
            {
                result = false;
            }
            return result;
        }

        /// <summary>
        /// 设置一个频点
        /// </summary>
        /// <param name="ch"></param>
        /// <param name="freq"></param>
        /// <param name="errmsg"></param>
        /// <returns></returns>
        public bool SetFreq(int ch, double freq, ref String errmsg)
        {
            String cmd = String.Format(cfreq, ch, freq.ToString("0000.000"));
            bool result = false;
            for (int idx = 0; idx < tryCount; ++idx)
            {
                if (_device.SendCommand(cmd, ref errmsg))
                {
                    string result2 = _device.GetOutString();
                    result = result2.Contains("CF");
                }
                else
                {
                    result = false;
                    errmsg = $"{cmd}:{errmsg}";
                }
                if (result)
                {
                    break;
                }
                //控制失败 继续尝试
                Thread.Sleep(500);
            }
            return result;
        }

        public bool SetFreqs(double[] freqs, ref String errmsg)
        {
            if (freqs.Length == 0)
            {
                return false;
            }

            if (!RemOn(ref errmsg))
            {
                return false;
            }
            Thread.Sleep(100);
            bool ret = true;
            for (int idx = 0; idx < freqs.Length; ++idx)
            {
                if (freqs[idx] <= 0.01) continue;
                if (!SetFreq(idx + 1, freqs[idx], ref errmsg))
                {
                    ret = false;
                }
            }
            return ret;
        }
    }
}