using DevExpress.Charts.Native;
using DevExpress.Internal.WinApi.Windows.UI.Notifications;
using DevExpress.XtraPrinting;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Data.Entity.Core.Common.EntitySql;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using XdCxRhDW.App.DTO;

namespace XzXdDw.App.Api.星地GDOP误差椭圆
{
    public static class GdopHelper
    {

        private const string GDOPDll = @"Api\星地GDOP误差椭圆\GDOP\GDOP_Draw.dll";

        static readonly DateTime dtZero = new DateTime(1970, 1, 1, 8, 0, 0, 0);
        /// <returns></returns>
        [DllImport(GDOPDll, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GdopLeoTowSatDRef(string mainLines, string adajLines, Int64 captime, double[] refPos
        , double fuHz1, double fuHz2, double dtousErr, double dfoHzErr, double ephLocErr, double ephVLocErr
        , double[] level, int levlen, int[] resCount, out IntPtr res, double[] satllh);

        [DllImport(GDOPDll, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GdopSingleSatD(string mainLines, Int64 captime1, Int64 captime2, Int64 captime3
            , double fuHz, double dfoHzErr, double ephLocErr, double ephVLocErr
            , double[] level, int levlen, int[] resCount,out IntPtr res, double[] satllh);

        [DllImport(GDOPDll, CallingConvention = CallingConvention.Cdecl)]
        public static extern void FreeGDOPBuf(IntPtr val);

        /// <summary>
        /// 低轨双星GDOP
        /// </summary>
        /// <param name="mainLines">主星星历</param>
        /// <param name="adajLines">邻星星历</param>
        /// <param name="captime">采集时间</param>
        /// <param name="refPos">参考站位置 长度3</param>
        /// <param name="fuHz1">目标上行频点 Hz</param>
        /// <param name="fuHz2">参考上行频点 Hz</param>
        /// <param name="dtousErr">时差误差</param>
        /// <param name="dfoHzErr">频差误差</param>
        /// <param name="ephLocErr">星历位置误差</param>
        /// <param name="ephVLocErr">星历速度误差</param>
        public static (List<SatInfo>, List<ErrDistanceMapPoints>) GdopLeoTowSatDRef(string mainLines, string adajLines, DateTime captime, double[] refPos
        , double fuHz1, double fuHz2, double dtousErr, double dfoHzErr, double ephLocErr, double ephVLocErr)
        {
            int satCount = 2;
            //该值和points 一一对应
            double[] level = GdopParam.误差配置.小误差距离m;
            double[] satllh = new double[satCount*3];
            var timeSpan = (long)(captime - dtZero).TotalSeconds;
            IntPtr res = IntPtr.Zero;
            int[] resCount = new int[level.Length];
            GdopLeoTowSatDRef(mainLines, adajLines, timeSpan, refPos
                , fuHz1, fuHz2, dtousErr, dfoHzErr, ephLocErr, ephVLocErr, level, level.Length, resCount, out res, satllh);

            IntPtr tmp = res;

            //用于绘制的数据
            List<double[]> points = new List<double[]>();
            for (int idx = 0; idx < level.Length; ++idx)
            {
                double[] levelval = new double[resCount[idx]];
                Marshal.Copy(tmp, levelval, 0, resCount[idx]);
                tmp += (resCount[idx] * sizeof(double));
                points.Add(levelval);
            }
            FreeGDOPBuf(res);

            List<SatInfo> satInfos = ParseResult(satCount, satllh, mainLines, adajLines);
            List<ErrDistanceMapPoints> errs = new List<ErrDistanceMapPoints>();
            for (int i = 0; i < points.Count; i++)
            {
                if (!points[i].Any()) continue;
                ErrDistanceMapPoints errDistanceMap = new ErrDistanceMapPoints();
                errDistanceMap.ErrDistance = level[i];
                errDistanceMap.MapDots.AddRange(ParseResult(points[i]));
                errs.Add(errDistanceMap);
            }
            return (satInfos, errs);
        }
        /// <summary>
        /// 单星GDOP
        /// </summary>
        /// <param name="mainLines">主星星历</param>
        /// <param name="captime1">第一采集时刻</param>
        /// <param name="captime2">第二采集时刻</param>
        /// <param name="captime3">第三采集时刻</param>
        /// <param name="dfoHzErr">频差误差</param>
        /// <param name="ephLocErr">星历位置误差</param>
        /// <param name="ephVLocErr">星历速度误差</param>
        /// <param name="fuHz">目标上行频点</param>
        /// <returns></returns>
        public static (List<SatInfo>, List<ErrDistanceMapPoints>) GdopSingleSat(string mainLines, DateTime captime1, DateTime captime2, DateTime captime3, double dfoHzErr, double ephLocErr, double ephVLocErr, double fuHz)
        {
            int satCount = 1;
            //该值和points 一一对应
            double[] level = GdopParam.误差配置.小误差距离m;
            double[] satllh = new double[satCount * 3];

            var timeSpan1 = (long)(captime1 - dtZero).TotalSeconds;
            var timeSpan2 = (long)(captime2 - dtZero).TotalSeconds;
            var timeSpan3 = (long)(captime3 - dtZero).TotalSeconds;
            IntPtr res = IntPtr.Zero;
            int[] resCount = new int[level.Length];
            GdopSingleSatD(mainLines, timeSpan1, timeSpan2, timeSpan3,fuHz, dfoHzErr,ephLocErr,ephVLocErr,level,level.Length,resCount,out res,satllh);

            IntPtr tmp = res;

            //用于绘制的数据
            List<double[]> points = new List<double[]>();
            for (int idx = 0; idx < level.Length; ++idx)
            {
                double[] levelval = new double[resCount[idx]];
                Marshal.Copy(tmp, levelval, 0, resCount[idx]);
                tmp += (resCount[idx] * sizeof(double));
                points.Add(levelval);
            }
            FreeGDOPBuf(res);

            List<SatInfo> satInfos = ParseResult(satCount, satllh, mainLines);
            List<ErrDistanceMapPoints> errs = new List<ErrDistanceMapPoints>();
            for (int i = 0; i < points.Count; i++)
            {
                if (!points[i].Any()) continue;
                ErrDistanceMapPoints errDistanceMap = new ErrDistanceMapPoints();
                errDistanceMap.ErrDistance = level[i];
                errDistanceMap.MapDots.AddRange(ParseResult(points[i]));
                errs.Add(errDistanceMap);
            }
            return (satInfos, errs);
        }

        private static List<MapDot> ParseResult(double[] ponits)
        {
            List<MapDot> mapDots = new List<MapDot>();
            int count = 2;
            for (int i = 0; i < ponits.Length / count; i++)
            {
                MapDot mapDot = new MapDot();
                mapDot.Lat = ponits[count * i + 1];
                mapDot.Lon = ponits[count * i];
                mapDots.Add(mapDot);
               
            }
            return mapDots;

        }


        private static List<SatInfo> ParseResult(int satCount, double[] satllh, params string[] ephLine)
        {

            List<SatInfo> list = new List<SatInfo>();
            int len = 3;
            for (int i = 0; i < satCount; i++)
            {
                SatInfo satInfo = new SatInfo();
                var ephstrs = ephLine[i].Split(new string[] { " ", "U" }, StringSplitOptions.RemoveEmptyEntries);
                if (ephstrs.Length == 16)
                {
                    satInfo.SatCode = Convert.ToInt32(ephstrs[1]);
                }
                satInfo.SatLon = Convert.ToDouble(satllh[len * i]);
                satInfo.SatLat = Convert.ToDouble(satllh[len * i + 1]);
                list.Add(satInfo);
            }

            return list;
        }
    }

}