using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Xml;
using System.Xml.Serialization;

namespace ShrlAlgoToolkit.RevitAddins.RvIndependent.MetroGauges.LandXMLData
{
    [XmlRoot("LandXML")]
    [Serializable]
    public class Model
    {
        public Model()
        {
            CgPoints = new List<CgPoints>();
            Roadways = new List<Roadway>();
            Surfaces = new List<Surface>();
            SourcePoints = new List<Point3D>();
            TargetPoints = new List<Point3D>();
            CoordinateSystem = new CoordinateSystem();
            Alignments = new Alignments();
            Project = new Project();
            Units = new Units();
            xsi_schemaLocation = "http://www.landxml.org/schema/LandXML-1.2 http://www.landxml.org/schema/LandXML-1.2/LandXML-1.2.xsd";
        }

        private const string defaultNamespace = "http:http://www.landxml.org/schema/LandXML-1.2";

        private const string xsiNamespace = "http://www.w3.org/2001/XMLSchema-instance";

        public Point3D GeometricCenter
        {
            get
            {
                var count = Alignments.Count;
                var point3D = new Point3D();
                if (count != 0)
                {
                    foreach (var alignment in Alignments)
                    {
                        point3D += alignment.GeometricCenter / count;
                    }
                }

                return point3D;
            }
        }

        [Obsolete("Property \"GetGeometricCenter\" is deprecated, please use \"GeometricCenter\" instead.")]
        public Point3D GetGeometricCenter => GeometricCenter;

        [XmlIgnore]
        public string Name
        {
            get
            {
                var text = string.Empty;
                foreach (var roadway in Roadways)
                {
                    text = text + roadway.Name + " ";
                }

                if (text != string.Empty)
                {
                    return text.TrimEnd();
                }

                if (Project == null)
                {
                    return string.Empty;
                }

                return Project.Name;
            }
        }

        public IEnumerable<string> PointCodes
        {
            get { return Alignments.AlignmentList.SelectMany(item => item.PointCodes); }
        }

        public IEnumerable<string> SurfaceNames
        {
            get { return Alignments.AlignmentList.SelectMany(item => item.SurfaceNames).Distinct(); }
        }

        public GeometryTransformations Transformations
        {
            get
            {
                var geometryTransformations = new GeometryTransformations();
                geometryTransformations.SetTransformations(SourcePoints[0], SourcePoints[1], TargetPoints[0], TargetPoints[1]);
                if (Transformed)
                {
                    geometryTransformations.Invert();
                }

                return geometryTransformations;
            }
        }

        [XmlElement("Application")]
        public Application Application { get; set; }

        [XmlElement("BasePoint")]
        public Point3D BasePoint { get; set; }

        [XmlElement("CgPoints")]
        public List<CgPoints> CgPoints { get; set; }

        [XmlElement("Alignments")]
        public Alignments Alignments { get; set; }

        [XmlAttribute("readOnly")]
        public bool ReadOnly { get; set; }

        [XmlAttribute("t")]
        public bool Transformed { get; set; }

        [XmlElement("CoordinateSystem")]
        public CoordinateSystem CoordinateSystem { get; set; }

        [XmlElement("ProjectOf")]
        public Project Project { get; set; }

        [XmlElement("Units")]
        public Units Units { get; set; }

        [XmlElement("SourcePoint")]
        public List<Point3D> SourcePoints { get; set; }

        [XmlElement("TargetPoint")]
        public List<Point3D> TargetPoints { get; set; }

        [XmlArray("Roadways")]
        public List<Roadway> Roadways { get; set; }

        [XmlArray("Surfaces")]
        public List<Surface> Surfaces { get; set; }

        [XmlAttribute("language")]
        public string Language { get; set; }

        [XmlAttribute("version")]
        public string Version { get; set; }

        [XmlAttribute("time")]
        public string Time { get; set; }

        [XmlAttribute("date")]
        public string Date { get; set; }

        [XmlAttribute("schemaLocation", Namespace = "http://www.w3.org/2001/XMLSchema-instance")]
        public string xsi_schemaLocation { get; set; }

        public void ConnectHierarchy()
        {
            ConnectRoadways();
            foreach (var roadway in Roadways)
            {
                roadway.ConnectAlignments();
            }

            foreach (var alignment in Alignments)
            {
                alignment.ConnectRegions();
                foreach (var region in alignment.Regions)
                {
                    region.ConnectParts();
                    foreach (var part in region.Parts)
                    {
                        part.ConnectRange();
                    }
                }

                foreach (var crossSection in alignment.CrossSections)
                {
                    crossSection.ConnectShapes();
                }
            }
        }

        public void ConnectRoadways()
        {
            foreach (var roadway in Roadways)
            {
                roadway.LandXml = this;
            }
        }

        public static Model Deserialize(string filename)
        {
            Model result;
            try
            {
                using (var fileStream = new FileStream(filename, FileMode.Open))
                {
                    result = Deserialize(fileStream);
                }
            }
            catch
            {
                result = null;
            }

            return result;
        }

        public static Model Deserialize(Stream stream)
        {
            Model model = null;
            try
            {
                var xmlSerializer = new XmlSerializer(typeof(Model), "http://www.landxml.org/schema/LandXML-1.2");
                model = xmlSerializer.Deserialize(stream) as Model;

                model.ConnectHierarchy();
            }
            catch
            {
                model = null;
            }

            return model;
        }

        public static Model DeserializeBinary(string filename)
        {
            Model model = null;
            try
            {
                using (var fileStream = new FileStream(filename, FileMode.OpenOrCreate))
                {
#if NET5_0_OR_GREATER
                    var ser = new DataContractSerializer(typeof(Model));
                    ser.WriteObject(fileStream, model);
#else
                    BinaryFormatter binaryFormatter = new BinaryFormatter();
                    model = binaryFormatter.Deserialize(fileStream) as Model;
                    model.ConnectHierarchy();
#endif

                }
            }
            catch { }

            return model;
        }

        public void Initialize(string projectName, string fileName, Application app, int units = 0, string version = "1.2")
        {
            Language = "English";
            ReadOnly = false;
            Version = version;
            Date = string.Concat(DateTime.Now.Year, "-", DateTime.Now.Month, "-", DateTime.Now.Day);
            Time = string.Concat(DateTime.Now.Hour, ":", DateTime.Now.Minute, ":", DateTime.Now.Second);
            Units.Clear();
            switch (units)
            {
                case 0:
                    Units.Add(new Imperial());
                    break;

                default:
                    Units.Add(new Metric());
                    break;
            }

            Units[0].Initialize();
            Project.Name = projectName;
            Project.File = fileName;
            Application = app;
        }

        public void RefreshShapes()
        {
            foreach (var alignment in Alignments.AlignmentList)
            {
                alignment.RefreshShapes();
            }
        }

        public bool Serialize(string filename)
        {
            var result = true;
            try
            {
                using (var fileStream = new FileStream(filename, FileMode.Create))
                {
                    var xmlSerializer = new XmlSerializer(typeof(Model), "http://www.landxml.org/schema/LandXML-1.2");
                    xmlSerializer.Serialize(fileStream, this, Namespaces());
                }
            }
            catch
            {
                result = false;
            }

            return result;
        }

        public bool Serialize(Stream stream)
        {
            var result = true;
            try
            {
                using (
                    var xmlWriter = XmlWriter.Create(
                        stream,
                        new XmlWriterSettings
                        {
                            NewLineHandling = NewLineHandling.Entitize,
                            NewLineChars = Environment.NewLine,
                            Encoding = Encoding.UTF8,
                            Indent = true
                        }
                    )
                )
                {
                    var xmlSerializer = new XmlSerializer(typeof(Model), "http://www.landxml.org/schema/LandXML-1.2");
                    xmlSerializer.Serialize(xmlWriter, this, Namespaces());
                }
            }
            catch
            {
                result = false;
            }

            return result;
        }

        public bool SerializeBinary(string filename)
        {
            var result = true;
            try
            {
                using (var fileStream = new FileStream(filename, FileMode.Create))
                {
#if NET5_0_OR_GREATER
                    var ser = new DataContractSerializer(typeof(Model));
                    ser.WriteObject(fileStream, this);
#else
                    var binaryFormatter = new BinaryFormatter();
                    binaryFormatter.Serialize(fileStream, this);
#endif
                }
            }
            catch
            {
                result = false;
            }

            return result;
        }

        public void SetBasePoint(bool center = true)
        {
            var point3D = SourcePoints.Count > 0 ? SourcePoints[0] : null;
            if (point3D == null)
            {
                if (center)
                {
                    point3D = GeometricCenter;
                }
                else if (Alignments.Count > 0)
                {
                    var alignment = Alignments[0];
                    if (alignment.CrossSections.Count > 0)
                    {
                        point3D = new Point3D(alignment.CrossSections[0]);
                    }
                }
            }

            if (point3D != null && point3D != new Point3D())
            {
                BasePoint = point3D;
                foreach (var alignment2 in Alignments)
                {
                    foreach (var interval in alignment2.CoordGeom)
                    {
                        foreach (var textPoint2D in interval._points)
                        {
                            textPoint2D.setText(textPoint2D.Y - point3D.Y, textPoint2D.X - point3D.X);
                            textPoint2D.X -= point3D.X;
                            textPoint2D.Y -= point3D.Y;
                            textPoint2D.Z -= point3D.Z;
                        }
                    }

                    foreach (var crossSection in alignment2.CrossSections)
                    {
                        crossSection.X -= point3D.X;
                        crossSection.Y -= point3D.Y;
                        crossSection.Z -= point3D.Z;
                        foreach (var designShape in crossSection.DesignShapes)
                        {
                            foreach (var crossSectionPoint in designShape.CrossSectionPoints)
                            {
                                crossSectionPoint.X -= point3D.X;
                                crossSectionPoint.Y -= point3D.Y;
                                crossSectionPoint.Z -= point3D.Z;
                            }
                        }
                    }

                    foreach (var profAlign in alignment2.Profile)
                    {
                        foreach (var textPoint2D2 in profAlign.PVIs)
                        {
                            textPoint2D2.X -= point3D.X;
                            textPoint2D2.Y -= point3D.Y;
                            textPoint2D2.Z -= point3D.Z;
                        }
                    }
                }
            }
        }

        public override string ToString()
        {
            return Name;
        }

        [Obsolete("Method \"Transform\" is deprecated, please use \"TransformByReferencePoints\" instead.")]
        public int Transform()
        {
            return TransformByReferencePoints();
        }

        public void Transform(GeometryTransformations transformations)
        {
            foreach (var alignment in Alignments)
            {
                alignment.Transform(transformations);
            }

            foreach (var roadway in Roadways)
            {
                roadway.StationStart *= transformations.ScaleFactor;
                roadway.StationEnd *= transformations.ScaleFactor;
            }

            if (BasePoint != null)
            {
                transformations.Transform(BasePoint);
            }
        }

        public int TransformByReferencePoints()
        {
            var result = 0;
            try
            {
                if (SourcePoints != null && TargetPoints != null && SourcePoints.Count >= 2 && TargetPoints.Count >= 2)
                {
                    var transformations = Transformations;
                    Transform(transformations);
                    Transformed = !Transformed;
                    result = Transformed ? 1 : -1;
                }
            }
            catch
            {
                result = 2;
            }

            return result;
        }

        private static XmlSerializerNamespaces Namespaces()
        {
            var xmlSerializerNamespaces = new XmlSerializerNamespaces();
            xmlSerializerNamespaces.Add("xsi", "http://www.w3.org/2001/XMLSchema-instance");
            return xmlSerializerNamespaces;
        }
    }
}