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;
using XdCxRhDW.Entity;

namespace XdCxRhDW.Api
{
    public class XcorrUtils
    {
        /// <summary>
        /// 参估画图
        /// </summary>
        /// <returns></returns>
        public async Task<List<ImageResult>> DrawImage(Dto.CpuCgDto xs)
        {
            var 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\\检测Cpu参估\\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;
        }

    }
}