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;
using System.Security.Policy;

namespace CpuCgServer
{
    public class XcorrStruct
    {
        public String file1 { get; set; }
        public String file2 { get; set; }

        public long smpStart { get; set; }           //开始样点
        public double 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;
        // 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(() =>
            {
                int flag = 0;
                if (xs.smpStart == 0)
                {
                    flag = 2;//文件参估,避免滑动时溢出
                    cafp.StartInfo.Arguments = $"{flag} \"{xs.file1}\" \"{xs.file2}\" {(Int64)(xs.samplingRate)} {xs.dtCenter} {xs.dtRange} {xs.dfRange} {xs.smpCount} {xs.snrThreshold}";
                }
                else
                {
                    var minStart = xs.dtRange / 2 / 1e6 * xs.samplingRate;
                    if (xs.smpStart < minStart)//滑动计算起时值必须要大于等于此数
                    {
                        xs.smpStart = (long)minStart;
                    }
                    cafp.StartInfo.Arguments = $"{flag} \"{xs.file1}\" \"{xs.file2}\" {(Int64)(xs.samplingRate)} {xs.dtCenter} {xs.dtRange} {xs.dfRange} {xs.smpStart} {xs.smpCount} {xs.snrThreshold}";
                }
                var exePath= Path.Combine(cafp.StartInfo.WorkingDirectory, "AddIns"); 
                cafp.StartInfo.WorkingDirectory = exePath;
                cafp.StartInfo.FileName = Path.Combine(exePath,"XcorrCpu.exe");
                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 = (long)xs.smpCount;
            });
            return res;
        }

        /// <summary>
        /// 参估画图
        /// </summary>
        /// <returns></returns>
        public async Task<List<ImageResult>> DrawImage(XcorrStruct xs)
        {
            cafp = new Process();
            List<ImageResult> list = new List<ImageResult>();
            await Task.Run(() =>
            {
                FileInfo file1 = new FileInfo(xs.file1);
                FileInfo file2 = new FileInfo(xs.file2);
                long totalsamp = file1.Length < file2.Length ? file1.Length / 4 : file2.Length / 4;
                //样点数为0时计算所有样本
                if (xs.smpCount == 0)
                {
                    xs.smpCount = (int)totalsamp - xs.smpStart;
                }
                else if (xs.smpCount > 0 && xs.smpCount < 1)
                {
                    xs.smpCount = (int)(totalsamp * xs.smpCount);
                }
                string outFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "CgImag.txt");
                int flag = 1;
                if (xs.smpStart == 0)
                {
                    flag = 3;//文件画图,避免滑动时溢出
                    cafp.StartInfo.Arguments = $"{flag} \"{xs.file1}\" \"{xs.file2}\" {(long)xs.samplingRate} {xs.dtCenter} {xs.dtRange} {xs.dfRange} {xs.smpCount} {xs.snrThreshold} {outFile}";
                }
                else
                {
                    var minStart = xs.dtRange / 2 / 1e6 * xs.samplingRate;
                    if (xs.smpStart < minStart)//滑动计算起时值必须要大于等于此数
                    {
                        xs.smpStart = (long)minStart;
                    }
                    cafp.StartInfo.Arguments = $"{flag} \"{xs.file1}\" \"{xs.file2}\" {(long)(xs.samplingRate)} {xs.dtCenter} {xs.dtRange} {xs.dfRange} {xs.smpStart} {xs.smpCount} {xs.snrThreshold} {outFile}";
                }


                cafp.StartInfo.FileName = Path.Combine(cafp.StartInfo.WorkingDirectory, "AddIns\\XcorrCpu.exe");
                //cafp.StartInfo.Arguments = $"1 \"{xs.file1}\" \"{xs.file2}\" {(long)(xs.samplingRate)} {xs.dtCenter} {xs.dtRange} {xs.dfRange} {xs.smpStart} {xs.smpCount} {xs.snrThreshold} {outFile}";
                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();
                if (str.StartsWith("1:") && File.Exists(outFile))
                {
                    var lines = File.ReadAllLines(outFile);
                    if (lines.Length > 1)
                    {
                        var lineFirstArr = lines[0].Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
                        int fsHz = Convert.ToInt32(lineFirstArr[0]);
                        int xFlag = Convert.ToInt32(lineFirstArr[1]);
                        int xMax = Convert.ToInt32(lineFirstArr[2]);
                        float yMax = Convert.ToSingle(lineFirstArr[3]);
                        for (int i = 1; i < lines.Length; i++)
                        {
                            var lineArr = lines[i].Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
                            ImageResult ir = new ImageResult()
                            {
                                FsHz = fsHz,
                                XFlag = xFlag,
                                XMax = xMax,
                                YMax = yMax,
                                XValue = Convert.ToInt32(lineArr[0]),
                                YValue = Convert.ToSingle(lineArr[1]),
                                Snr = Convert.ToSingle(lineArr[2]),
                            };
                            list.Add(ir);
                        }
                    }
                    File.Delete(outFile);
                }
            });
            return list;
        }

    }
}