using DevExpress.Pdf;
using Ips.Library.Basic;
using Ips.Library.Entity;
using Ips.Library.Signals;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Ips.Service.GpuServer
{
    /// <summary>
    /// 参估处理服务
    /// </summary>
    public class CgService
    {
        private bool isBusy = false;
        private string exeName = "cog";
        /// <summary>
        /// 开始
        /// </summary>
        /// <param name="dto"></param>
        /// <returns></returns>
        public async Task<CorResult[]> StartAsync(CorParams dto)
        {
            if (isBusy)
            {
                throw new Exception("上次GPU调用未结束");
            }
            //直接从采集上下载文件到本地
            string[] files = new string[] { dto.File1, dto.File2 };
            for (int i = 0; i < 2; i++)
            {
                string localFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Download", files[i]);
                if (!File.Exists(localFile))
                {
                    var res = await HttpHelper.DownloadFileAsync(dto.AdFileDownloadUrl, files[i], localFile);
                    if (!res)
                    {
                        throw new Exception($"文件下载失败,url=[{dto.AdFileDownloadUrl}?filename={files[i]}]");
                    }
                }
                if (i == 0)
                    dto.File1 = localFile;
                else
                    dto.File2 = localFile;
            }
            return await Task.Run(() =>
            {
                try
                {
                    isBusy = true;
                    Process p = new Process();
                    p.StartInfo.FileName = $"参数估计\\{exeName}.exe";

                    StringBuilder sb = new StringBuilder();
                    sb.Append($"{dto.File1} ");
                    sb.Append($"{dto.File2} ");
                    sb.Append($"{dto.DtoCenter} ");
                    sb.Append($"{dto.DtoRange} ");
                    sb.Append($"{dto.Snr} ");
                    sb.Append($"{dto.DfoRange} ");
                    sb.Append($"{dto.DtoCorr} ");
                    sb.Append($"{dto.DfoCorr} ");
                    sb.Append($"{dto.Fs} ");
                    sb.Append($"-l {dto.DataLen} ");
                    sb.Append($"-z {dto.AddZero} ");
                    sb.Append($"-o {dto.TimeOffset} ");
                    sb.Append($"-f {(int)dto.OffsetType} ");
                    if (dto.Timeslots != null)
                    {
                        sb.Append($"-d {string.Join(" ", dto.Timeslots)} ");
                        sb.Append($"-m {dto.MergeType.ToString("d")}");
                    }
                    p.StartInfo.Arguments = sb.ToString();
                    p.StartInfo.CreateNoWindow = true;
                    p.StartInfo.RedirectStandardError = true;
                    p.StartInfo.RedirectStandardOutput = true;
                    p.StartInfo.UseShellExecute = false;
                    IpsLogger.Info($"开始参估计算.可打开Logs目录查看{exeName}.exe命令行参数详细");
                    IpsLogger.Info($"开始参估计算.{exeName}.exe参数={p.StartInfo.Arguments}",false);
                    p.Start();
                    var succeed = p.WaitForExit(30 * 1000);
                    if (!succeed)
                    {
                        Stop();
                        throw new Exception($"计算超时");
                    }
                    var err = p.StandardError.ReadToEnd();
                    if (!string.IsNullOrWhiteSpace(err))
                    {
                        throw new Exception(err);
                    }
                    var str = p.StandardOutput.ReadToEnd();

                    var result = CorResult.FromLines(str, dto.Snr);
                    return result;
                }
                finally
                {
                    isBusy = false;
                }
            });
        }
        /// <summary>
        /// 停止
        /// </summary>
        public void Stop()
        {
            var pros = Process.GetProcessesByName(exeName);
            foreach (var item in pros)
            {
                try
                {
                    item.Kill();
                }
                catch
                { }
            }
        }
        private CorResult[] FromLines(string result, double snr)
        {
            if (string.IsNullOrWhiteSpace(result))
                return new CorResult[0];
            var lines = result.Split(Environment.NewLine, StringSplitOptions.RemoveEmptyEntries);
            CorResult[] results = new CorResult[lines.Length];
            for (int i = 0; i < lines.Length; i++)
            {
                results[i] = FromLine(lines[i], snr);
            }
            return results;
        }
        private CorResult FromLine(string line, double snr)
        {
            if (string.IsNullOrWhiteSpace(line)) throw new ArgumentNullException(nameof(line));
            CorResult corResult = new CorResult();
            var cafItems = line.Split(";".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
            corResult.Message = line;
            if (cafItems.Length == 0) return corResult;
            int i = 0;
            var cafitem = cafItems[i];
            var resitems = cafitem.Split(',');
            if (resitems.Length != 6) return corResult;
            corResult.Start = int.Parse(resitems[0]);
            corResult.Length = int.Parse(resitems[1]);
            corResult.Dto = double.Parse(resitems[2]);
            corResult.Dfo = double.Parse(resitems[3]);
            corResult.Snr = double.Parse(resitems[4]);
            corResult.UseTime = double.Parse(resitems[5]);
            corResult.IsValid = corResult.Snr > snr;
            if (cafItems.Length > 1)
            {
                for (i = 1; i < cafItems.Length; i++)
                {
                    resitems = cafItems[i].Split(',');
                    XgfItem xgfItem = new XgfItem()
                    {
                        Dto = double.Parse(resitems[0]),
                        Dfo = double.Parse(resitems[1]),
                        Snr = double.Parse(resitems[2])
                    };
                    corResult.XgfList.Add(xgfItem);
                }
            }
            return corResult;
        }
    }
}