using System;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Threading.Tasks;
using System.Collections;
using System.Collections.Generic;
using XdCxRhDw.Dto;

namespace XdCxRhDW.Core.Api
{
    public class XcorrStruct
    {
        public String file1 { get; set; }
        public String file2 { get; set; }

        public int smpStart { get; set; }           //开始样点
        public int smpCount { get; set; }           //样点数
        public double samplingRate { get; set; }    //采样率
        public double dtCenter { get; set; }        //时差中心
        public double dtRange { get; set; }         //时差范围
        public double dfRange { get; set; }         //频差范围
        public double snrThreshold { get; set; }	//信噪比门限

        public XcorrStruct Copy()
        {
            XcorrStruct xItem = new XcorrStruct();
            xItem.file1 = file1;
            xItem.file2 = file2;
            xItem.smpCount = smpCount;
            xItem.samplingRate = samplingRate;
            xItem.dtCenter = dtCenter;
            xItem.dtRange = dtRange;
            xItem.dfRange = dfRange;
            xItem.smpStart = smpStart;
            xItem.snrThreshold = snrThreshold;
            return xItem;
        }

    }
    public class XcorrUtils
    {
        Process cafp;
        Process dmp;
        // D:/data/test/r1.dat  D:/data/test/r4.dat 1562500 -250000 20 16384 100000 1048576 11
        public async Task<CafResult> Calc(XcorrStruct xs)
        {
            CafResult res = new CafResult();
            cafp = new Process();
            await Task.Run(() =>
            {
                cafp.StartInfo.FileName = Path.Combine(cafp.StartInfo.WorkingDirectory, "xcorr\\XcorrCpu.exe");
                cafp.StartInfo.Arguments = $"\"{xs.file1}\" \"{xs.file2}\" {(Int64)(xs.samplingRate)} {xs.dtCenter} {xs.dtRange} {xs.dfRange} {xs.smpStart} {xs.smpCount} {xs.snrThreshold}";
                cafp.StartInfo.CreateNoWindow = true;
                cafp.StartInfo.RedirectStandardError = true;
                cafp.StartInfo.RedirectStandardOutput = true;
                cafp.StartInfo.UseShellExecute = false;
                cafp.Start();
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                cafp.WaitForExit();
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                var str = cafp.StandardOutput.ReadToEnd();
                res.FromLine(str);
                res.file1 = xs.file1;
                res.file2 = xs.file2;
                res.tm = (int)stopWatch.Elapsed.TotalMilliseconds;
                res.smpstart = xs.smpStart;
                res.smplen = xs.smpCount;
            });
            return res;
        }

        public async Task<IEnumerable<DmcResult>> DmcCheckAsync(string fileName, double fsHz, DmcType dmcType)
        {
            string dmcCmd = "all";
            dmp = new Process();
            string pFileName = Path.Combine(dmp.StartInfo.WorkingDirectory, "xcorr\\dmc.exe");
            string pArguments = string.Empty;
            switch (dmcType)
            {
                case DmcType.DAMA:
                    dmcCmd = "dm";
                    pArguments = $"{dmcCmd} \"{fileName}\"";// -f {fs}" -c --dmfirst";
                    break;
                case DmcType.IBS:
                    dmcCmd = "nd";
                    pArguments = $"{dmcCmd} \"{fileName}\"";// -f {fs}" -c --dmfirst";
                    break;
                case DmcType.Ky5758:
                    pFileName = Path.Combine(dmp.StartInfo.WorkingDirectory, "xcorr\\enc.exe");
                    //enc.exe enc-test.dat 0.096 5 0全部文件
                    pArguments = $"{fileName} {fsHz * 1e-6} {5} {0}";
                    break;
                default:
                    break;
            }
            return await Task.Run(() =>
             {
                 
                 dmp.StartInfo.FileName = pFileName;
                 dmp.StartInfo.Arguments = pArguments;
                 dmp.StartInfo.CreateNoWindow = true;
                 dmp.StartInfo.RedirectStandardError = true;
                 dmp.StartInfo.RedirectStandardOutput = true;
                 dmp.StartInfo.UseShellExecute = false;
                 dmp.Start();
                 Stopwatch stopWatch = new Stopwatch();
                 stopWatch.Start();
                 dmp.WaitForExit();
                 stopWatch.Stop();
                 TimeSpan ts = stopWatch.Elapsed;
                 var str = dmp.StandardOutput.ReadToEnd();
                 return ConvertDmcResult(str, ts.TotalMilliseconds);
             });
        }

        private IEnumerable<DmcResult> ConvertDmcResult(string res, double tm)
        {
            var lines = res.Split(Environment.NewLine.ToArray(), StringSplitOptions.RemoveEmptyEntries);
            foreach (var line in lines)
            {
                var items = line.Split('\t');
                if (items.Length < 2) continue;
                int start = int.Parse(items[0]);
                int length = int.Parse(items[1]);
                string userName = "";
                if (items.Length >= 3)
                    userName = items[2];
                yield return new DmcResult(start, length, userName, (int)tm);
            }
        }

        public void StopDm()
        {
            try
            {
                if (dmp != null)
                {
                    dmp.Kill();
                }
            }
            catch (Exception)
            {
            }
        }
        public void StopCalc()
        {
            try
            {
                if (cafp != null)
                {
                    cafp.Kill();
                }
            }
            catch (Exception)
            {
            }
        }
    }
}