using System;
using System.IO;
using System.Collections.Generic;
using System.Xml.Serialization;

namespace ConsoleApp1
{
    public class Program
    {
        [XmlRoot("ArrayOfMove")]
        public class ArrayOfMove
        {
            [XmlElement("Move")]
            public List<Move> Moves { get; set; }
        }

        public class Move
        {
            public int Line { get; set; }
            public int Block { get; set; }
            public int ToolNumber { get; set; }
            public string Type { get; set; }
            public string WorkPlane { get; set; }
            public string MaterialSide { get; set; }
            public double FeedRate { get; set; }
            public double SpindleSpeed { get; set; }
            public double OriginX { get; set; }
            public double OriginY { get; set; }
            public double OriginZ { get; set; }
            public double OriginRot1 { get; set; }
            public double OriginRot2 { get; set; }
            public double TargetX { get; set; }
            public double TargetY { get; set; }
            public double TargetZ { get; set; }
            public double TargetRot1 { get; set; }
            public double TargetRot2 { get; set; }
            public double Length { get; set; }
            public double ArcCenterX { get; set; }
            public double ArcCenterY { get; set; }
            public double ArcCenterZ { get; set; }
            public double ArcRadius { get; set; }
        }

        public static void Main(string[] args)
        {
            XmlSerializer serializer = new XmlSerializer(typeof(ArrayOfMove));

            using (FileStream fs = new FileStream(args[0], FileMode.Open))
            {
                ArrayOfMove arrayOfMove = (ArrayOfMove)serializer.Deserialize(fs);

                string dxfFile = Path.GetDirectoryName(args[0]) + "\\" + Path.GetFileNameWithoutExtension(args[0]) + ".dxf";
                using (FileStream FileStream = new FileStream(dxfFile, FileMode.Create, FileAccess.Write, FileShare.ReadWrite))
                {
                    using (StreamWriter sw = new StreamWriter(FileStream))
                    {
                        sw.WriteLine("  0");
                        sw.WriteLine("SECTION");
                        sw.WriteLine("  2");
                        sw.WriteLine("ENTITIES");
                        sw.WriteLine("  0");

                        bool first = true;
                        foreach (Move move in arrayOfMove.Moves)
                        {
                            if (first)
                            {
                                sw.WriteLine("SEQEND");
                                sw.WriteLine("  0");

                                if (move.Type != "Rapid")
                                {
                                    sw.WriteLine("POLYLINE");
                                    sw.WriteLine("  8");
                                    sw.WriteLine("0");
                                    sw.WriteLine("  66");
                                    sw.WriteLine("1");
                                    sw.WriteLine("  70");
                                    sw.WriteLine("0");
                                    sw.WriteLine("62");
                                    sw.WriteLine("7");
                                    sw.WriteLine("0");

                                    sw.WriteLine("VERTEX");
                                    sw.WriteLine("  8");
                                    sw.WriteLine("0");
                                    sw.WriteLine("  10");
                                    sw.WriteLine("0.0");
                                    sw.WriteLine("  20");
                                    sw.WriteLine("0.0");
                                    sw.WriteLine("  0");
                                }
                            }

                            if (move.Type == "Rapid")
                            {
                                if (!first)
                                {
                                    sw.WriteLine("  0");
                                }

                                sw.WriteLine("POLYLINE");
                                sw.WriteLine("  8");
                                sw.WriteLine("0");
                                sw.WriteLine("  66");
                                sw.WriteLine("1");
                                sw.WriteLine("  70");
                                sw.WriteLine("0");
                                sw.WriteLine("62");
                                sw.WriteLine("7");
                                sw.WriteLine("0");

                                sw.WriteLine("VERTEX");
                                sw.WriteLine("  8");
                                sw.WriteLine("0");
                                sw.WriteLine("  10");
                                sw.WriteLine(move.TargetX.ToString("0.######"));
                                sw.WriteLine("  20");
                                sw.WriteLine(move.TargetY.ToString("0.######"));
                            }
                            else if (move.Type == "Linear")
                            {
                                if (!first)
                                {
                                    sw.WriteLine("  0");
                                }

                                sw.WriteLine("VERTEX");
                                sw.WriteLine("  8");
                                sw.WriteLine("0");
                                sw.WriteLine("  10");
                                sw.WriteLine(move.TargetX.ToString("0.######"));
                                sw.WriteLine("  20");
                                sw.WriteLine(move.TargetY.ToString("0.######"));
                            }
                            else if (move.Type == "CircularCW")
                            {
                                if (!first)
                                {
                                    sw.WriteLine("  42");
                                    double bulge = -1 * GetBulge(move.OriginX, move.OriginY, move.TargetX, move.TargetY, move.ArcCenterX, move.ArcCenterY);
                                    sw.WriteLine(bulge.ToString("0.######"));
                                    sw.WriteLine("  0");
                                }

                                sw.WriteLine("VERTEX");
                                sw.WriteLine("  8");
                                sw.WriteLine("0");
                                sw.WriteLine("  10");
                                sw.WriteLine(move.TargetX.ToString("0.######"));
                                sw.WriteLine("  20");
                                sw.WriteLine(move.TargetY.ToString("0.######"));
                            }
                            else if (move.Type == "CircularCCW")
                            {
                                if (!first)
                                {
                                    sw.WriteLine("  42");
                                    double bulge = GetBulge(move.OriginX, move.OriginY, move.TargetX, move.TargetY, move.ArcCenterX, move.ArcCenterY);
                                    sw.WriteLine(bulge.ToString("0.######"));
                                    sw.WriteLine("  0");
                                }

                                sw.WriteLine("VERTEX");
                                sw.WriteLine("  8");
                                sw.WriteLine("0");
                                sw.WriteLine("  10");
                                sw.WriteLine(move.TargetX.ToString("0.######"));
                                sw.WriteLine("  20");
                                sw.WriteLine(move.TargetY.ToString("0.######"));
                            }

                            first = false;
                        }

                        sw.WriteLine("  0");

                        sw.WriteLine("SEQEND");
                        sw.WriteLine("  0");

                        sw.WriteLine("ENDSEC");
                        sw.WriteLine("  0");
                        sw.WriteLine("EOF");
                    }
                }
            }
        }

        static double GetBulge(double x0, double y0, double x1, double y1,double xc, double yc)
        {
            double r, a, i, u;

            r = Math.Sqrt(Math.Pow(x1 - xc, 2) + Math.Pow(y1 - yc, 2));
            u = Math.Sqrt(Math.Pow(x1 - x0, 2) + Math.Pow(y1 - y0, 2));
            a = Math.Sqrt(Math.Pow(r, 2) - Math.Pow(u, 2) / 4.0);
            i = r - a;

            return Math.Abs(2 * i / u);
        }
    }
}