using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Serialization;
using GeoSigma.SigmaDrawerStyle;
using GeoSigmaDrawLib;

namespace SigmaDrawerElement
{
    public class DrawerElementHelp
    {
        public static DrawerElementProperty Deserialize(string data)
        {
            if (data.IndexOf("<HowToViewCurve>") > 0)
            {
                data = data.Replace("<HowToViewCurve />", "");
            }
            else if (data.IndexOf("<HowToViewPoint>") > 0)
            {
                data = data.Replace("<HowToViewPoint />", "");
            }

            DrawerElementProperty element = null;
            using (StringReader reader = new StringReader(data))
            {
                try
                {
                    System.Xml.Serialization.XmlSerializer xmlSerializer = new System.Xml.Serialization.XmlSerializer(typeof(DrawerElementProperty));
                    element = xmlSerializer.Deserialize(reader) as DrawerElementProperty;
                    // 原始属性处理
                    if (element.ElementType == DrawElementType.ELEMENT_CURVE && element.CurveStyle == null)
                    {
                        DrawerPline line = element.Element as DrawerPline;
                        if (element.ColorRef != 0
                            || line.Width > 1E-10
                            || !string.IsNullOrEmpty(line.DisplayType))
                        {
                            CurveProperty curveProperty = new CurveProperty();
                            curveProperty.TypeName = "原始";
                            ViewBase curViewBase = new ViewBase();
                            curViewBase.ColorRef = element.ColorRef;
                            curViewBase.Width = line.Width;
                            curViewBase.Style = (int)Constants.ParseLineType(line.DisplayType);
                            curViewBase.Style |= (int)LineType.PLINE_SMOOTH_HEAD;
                            curveProperty.Base = curViewBase;
                            element.CurveStyle = new DrawerCurveStyle();
                            element.CurveStyle.Properties.Add(curveProperty);
                        }
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }
            return element;
        }
        public List<DrawerElementProperty> DeserializeList(string data)
        {
            if (data.IndexOf("<HowToViewCurve>") > 0)
            {
                data = data.Replace("<HowToViewCurve />", "");
            }
            else if (data.IndexOf("<HowToViewPoint>") > 0)
            {
                data = data.Replace("<HowToViewPoint />", "");
            }
            data = data.Replace("Element", "DrawerElementProperty");
            GeoSigma.SigmaDrawerElement.DrawerData elements = null;
            using (StringReader reader = new StringReader(data))
            {
                try
                {
                    System.Xml.Serialization.XmlSerializer xmlSerializer = new System.Xml.Serialization.XmlSerializer(typeof(GeoSigma.SigmaDrawerElement.DrawerData));
                    elements = xmlSerializer.Deserialize(reader) as GeoSigma.SigmaDrawerElement.DrawerData;
                    // 原始属性处理
                    foreach (var element in elements)
                    {
                        if (element.ElementType == DrawElementType.ELEMENT_CURVE && element.CurveStyle == null)
                        {
                            DrawerPline line = element.Element as DrawerPline;
                            if (element.ColorRef != 0
                                || line.Width > 1E-10
                                || !string.IsNullOrEmpty(line.DisplayType))
                            {
                                CurveProperty curveProperty = new CurveProperty();
                                curveProperty.TypeName = "原始";
                                ViewBase curViewBase = new ViewBase();
                                curViewBase.ColorRef = element.ColorRef;
                                curViewBase.Width = line.Width;
                                curViewBase.Style = (int)Constants.ParseLineType(line.DisplayType);
                                curViewBase.Style |= (int)LineType.PLINE_SMOOTH_HEAD;
                                curveProperty.Base = curViewBase;
                                element.CurveStyle = new DrawerCurveStyle();
                                element.CurveStyle.Properties.Add(curveProperty);
                            }
                        }
                    }
                }
                catch (InvalidOperationException ex)
                {
                    Console.WriteLine(ex.InnerException?.Message);
                }
            }
            return elements;
        }

        public static string Serialize(DrawerElementProperty element)
        {
            //string strData = "";
            XmlWriterSettings settings = new XmlWriterSettings();
            settings.Indent = true;
            settings.IndentChars = "    ";
            settings.NewLineChars = "\r\n";
            settings.Encoding = Encoding.Default;
            //去除xml声明
            settings.OmitXmlDeclaration = true;

            System.IO.MemoryStream mem = new MemoryStream();
            using (XmlWriter writer = XmlWriter.Create(mem, settings))
            {
                // 去除默认命名空间xmlns:xsd和xmlns:xsi
                XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
                ns.Add(string.Empty, string.Empty);

                // Create the XmlAttributeOverrides and XmlAttributes objects.
                XmlAttributeOverrides overrides = new XmlAttributeOverrides();
                XmlAttributes attrs = new XmlAttributes();

                // /* Use the XmlIgnore to instruct the XmlSerializer to ignore
                // the GroupName instead. */
                // attrs=new XmlAttributes();
                // attrs.XmlIgnore=true;
                // overrides.Add(typeof(SomeBase), "SomeProperty", attrs);

                XmlSerializer formatter = new XmlSerializer(typeof(DrawerElementProperty));
                formatter.Serialize(writer, element, ns);
            }
            string strData = Encoding.Default.GetString(mem.ToArray());

            if (element.CurveStyle != null)
            {
                int nInsert = strData.LastIndexOf("</Element>");
                strData.Insert(nInsert, "<HowToViewCurve />" + System.Environment.NewLine);
            }
            else if (element.PointStyle != null)
            {
                int nInsert = strData.LastIndexOf("</Element>");
                strData.Insert(nInsert, "<HowToViewPoint />" + System.Environment.NewLine);
            }

            return strData;
        }
    }
}