using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

using System.IO;

namespace CPFtoKML
{
    public partial class Form1 : Form
    {
        private struct Position
        {
            public String timeStamp;
            public double lat;
            public double lon;
            public double elevation;
            public string profileNum;
        }

        private const int QDepth = 256;
        private static Position[] cpfPositions = new Position[256];

        public Form1()
        {
            InitializeComponent();
        }

        private static StreamReader sbdFile;

        private static void readSBDs()
        {
            Console.WriteLine("Starting read SBDs");

            string[] files = Directory.GetFiles(selectedPath, "*.sbd");

            for (int i = 0; i < files.Length; i++)
            {
                sbdFile = new StreamReader(files[i]);

                string inLine = sbdFile.ReadLine();
                string[] fields = inLine.Split(',');

                int index = int.Parse(parseProfileNum(fields[22]));
                cpfPositions[index].profileNum = index.ToString();
                cpfPositions[index].timeStamp = fields[0];
                cpfPositions[index].lat = parseLat(fields[2], fields[3]);
                cpfPositions[index].lon = parseLon(fields[5], fields[6]);
                cpfPositions[index].elevation = 0.0;
            }
        }

        private static string[] of = new string[]{"of"};       private static string parseProfileNum(string inString)
        {
            string[] fields = inString.Split(of, StringSplitOptions.None);
            return (fields[0]);
        }
        private static double parseLat(string inLat, string inNS)
        {
            int decPointIndex;
            double min;
            double lat;

            decPointIndex = inLat.IndexOf('.');
            
            min = double.Parse(inLat.Substring(decPointIndex - 2));
            lat = double.Parse(inLat.Substring(0, decPointIndex - 2));
            lat = lat + (min / 60.0);
            
            if (String.Compare("S", inNS) == 0)
                lat = -1.0 * lat;
            
            return(lat);

        }

        private static double parseLon(string inLon, string inEW)
        {
            int decPointIndex;
            double min;
            double lon;

            decPointIndex = inLon.IndexOf('.');
            
            min = double.Parse(inLon.Substring(decPointIndex - 2));
            lon = double.Parse(inLon.Substring(0, decPointIndex - 2));
            lon = lon + (min / 60.0);
            
            if (String.Compare("W", inEW) == 0)
                lon = -1.0 * lon;
            
            return (lon);
        }

        private static StreamWriter kmlFile;

        public static void writeKMLTrack()
        {
            Console.WriteLine("Starting writeKML");
            kmlFile = new StreamWriter(selectedPath + @"\CPFTrack.kml");

            kmlFile.WriteLine(@"<?xml version=""1.0"" encoding=""UTF-8""?>");
            kmlFile.WriteLine(@"<kml xmlns=""http://www.opengis.net/kml/2.2"" ");
            kmlFile.WriteLine(@" xmlns:gx=""http://www.google.com/kml/ext/2.2"">");
            kmlFile.WriteLine("<Folder>");

            kmlFile.WriteLine("   <Placemark>");
            kmlFile.WriteLine("   <name>CPF Track</name>");
            kmlFile.WriteLine("   <Style>\r\n" +
                              "      <IconStyle>\r\n" +
                              "         <scale>3</scale>\r\n" +
                              "         <Icon>\r\n" +
                              "            <href>..\\cpf.png</href>\r\n" +
                              "         </Icon>\r\n" +
                              "      </IconStyle>\r\n" +
                              "   </Style>");
            kmlFile.WriteLine("      <gx:Track>");
            kmlFile.WriteLine("         <altitudeMode>absolute</altitudeMode>");
            foreach (Position value in cpfPositions)
            {
                if (value.timeStamp != null)
                {
                    kmlFile.WriteLine("         <gx:angles>0.0</gx:angles>");
                    kmlFile.WriteLine("         <when>" + value.timeStamp + "</when>");
                    kmlFile.WriteLine("         <gx:coord>" + 
                                    value.lon.ToString("f6") + " " +
                                    value.lat.ToString("f6") + " " +
                                    "0.0" + "</gx:coord>");
                }
            }
            kmlFile.WriteLine("      </gx:Track>");
            kmlFile.WriteLine("   </Placemark>");

            foreach (Position value in cpfPositions)
            {
                if (value.timeStamp != null)
                {
                    kmlFile.WriteLine("   <Placemark>");
                    if(int.Parse(value.profileNum) == 0)
                        kmlFile.WriteLine("      <name>Deploy" + "</name>");
                    else
                        kmlFile.WriteLine("      <name>P-" + value.profileNum + "</name>");
                    kmlFile.WriteLine("      <Point>");
                    kmlFile.WriteLine("         <coordinates>" +
                                                value.lon.ToString("f6") + " " +
                                                value.lat.ToString("f6") + " " +
                                                "0.0" + "</coordinates>");
                    kmlFile.WriteLine("      </Point>");
                    kmlFile.WriteLine("   </Placemark>");
                }
            }
            kmlFile.WriteLine("</Folder>");
            kmlFile.WriteLine("</kml>");

            kmlFile.Close();
            Console.WriteLine("Finished writeKML");
        }

        private void showData()
        {
            StringBuilder sbText = new StringBuilder(16000);
            int index = 1;

            sbText.Clear();
            sbText.Append("SBD\tProfile Num\tDate Time\t\t\tLatitude\tLongitude\r\n");

            foreach (Position value in cpfPositions)
            {
                if (value.timeStamp != null)
                {
                    sbText.Append(index.ToString() + "\t\t" + value.profileNum + "\t" + value.timeStamp + "\t\t" + value.lat.ToString("F6") + "\t" + value.lon.ToString("F6") + "\r\n");
                    index++;
                }
            }
            rtbDataTable.Text = sbText.ToString();
        }

        private static string selectedPath;

        private void Form1_Shown(object sender, EventArgs e)
        {
            folderBrowserDialog1.SelectedPath = @"\\atlas.shore.mbari.org\ProjectLibrary\CPF\Operations\2017Mar09";
            selectedPath = folderBrowserDialog1.SelectedPath;

            tbPath.Text = selectedPath;

            readSBDs();
            writeKMLTrack();
            showData();

           //Application.Exit();
        }

        private void btnExit_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
    }
}