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;

namespace SigmaDrawerElement
{
    [XmlRoot("Layer")]
    [XmlType("Layer")]
    public class DrawerLayer
    {
        [XmlAttribute]
        public string Name { get; set; } = "";
        [XmlAttribute]
        public int Visibility { get; set; } = 1;

        [XmlElement("HowToViewCurve")]
        public DrawerCurveStyle CurveStyle { set; get; }
        [XmlElement("HowToViewPoint")]
        public DrawerPointStyle PointStyle { set; get; }

        [XmlIgnore]
        [XmlElement("Visibility")]
        public LayerElementVisibility ElementVisibility { get; set; } = new LayerElementVisibility();

        [XmlIgnore]
        [XmlElement("Color")]
        public LayerElementColor ElementColor { get; set; } = new LayerElementColor();

        //Type[] Types = { typeof(DrawerPoint), typeof(DrawerPointTwoName), typeof(DrawerPointCrossName) };

        [XmlElement("Point", typeof(DrawerPoint))]
        [XmlElement("TwoPoint", typeof(DrawerPointTwoName))]
        [XmlElement("CrossPoint", typeof(DrawerPointCrossName))]
        [XmlElement("Pline", typeof(DrawerPline))]
        [XmlElement("Surface", typeof(DrawerSurface))]
        [XmlElement("Text", typeof(DrawerText))]
        [XmlElement("Ellipse", typeof(DrawerEllipse))]
        [XmlElement("Arc", typeof(DrawerArc))]
        [XmlElement("Proportion", typeof(DrawerProportion))]
        [XmlElement("Frame", typeof(DrawerFrame))]
        [XmlElement("FGrid", typeof(DrawerFrameGrid))]
        [XmlElement("Xyz", typeof(DrawerXyz))]
        public List<ElementBase> Elements { get; set; } = new List<ElementBase>();

        public string ToXml()
        {
            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();

            StringBuilder sb = new StringBuilder();
            using (StringWriter stringWriter = new StringWriter(sb))
            {
                using (XmlWriter writer = XmlWriter.Create(stringWriter, 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();

                    XmlSerializer formatter = new XmlSerializer(this.GetType());
                    formatter.Serialize(writer, this, ns);
                }
            }
            // string strData = Encoding.Default.GetString(mem.ToArray());
            string strData = sb.ToString();

            if (this.CurveStyle != null)
            {
                int nInsert = strData.LastIndexOf("</Layer>");
                strData.Insert(nInsert, "<HowToViewCurve />" + System.Environment.NewLine);
            }
            else if (this.PointStyle != null)
            {
                int nInsert = strData.LastIndexOf("</Layer>");
                strData.Insert(nInsert, "<HowToViewPoint />" + System.Environment.NewLine);
            }
            // strData.Replace("")
            return strData;
        }
    }
    public class LayerElementVisibility
    {
        [XmlAttribute("Value")]
        public int Visibility { get; set; } = 1;
    }
    public class LayerElementColor
    {
        [XmlAttribute("Value")]
        public int ElementColor { get; set; } = 0;
    }
}