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// (C) Copyright 2003-2019 by Autodesk, Inc.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
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//

using System;
using System.Xml.Linq;
using System.Text;
using Autodesk.Revit.DB;

namespace Revit.SDK.Samples.CS.PointCloudEngine
{
    /// <summary>
    /// Utilities used by the sample to process XML entries in file-based point clouds.
    /// </summary>
    public static class XmlUtils
    {
        /// <summary>
        /// Gets an XYZ point from an XML element.
        /// </summary>
        /// <param name="element">The element.</param>
        /// <returns>The XYZ.</returns>
        public static XYZ GetXYZ(XElement element)
        {
            XAttribute x = element.Attribute("X");
            XAttribute y = element.Attribute("Y");
            XAttribute z = element.Attribute("Z");

            return new XYZ(Double.Parse(x.Value), Double.Parse(y.Value), Double.Parse(z.Value));
        }

        /// <summary>
        /// Gets a boolean value from an XML element.
        /// </summary>
        /// <param name="element">The element.</param>
        /// <returns>The value.</returns>
        public static bool GetBoolean(XElement element)
        {
            return Boolean.Parse(element.Attribute("value").Value);
        }

        /// <summary>
        /// Gets a double value from an XML element.
        /// </summary>
        /// <param name="element">The element.</param>
        /// <returns>The value.</returns>
        public static double GetDouble(XElement element)
        {
            return Double.Parse(element.Attribute("value").Value);
        }

        /// <summary>
        /// Gets an integer value from an XML element.
        /// </summary>
        /// <param name="element">The element.</param>
        /// <returns>The value.</returns>
        public static int GetInteger(XElement element)
        {
            return Int32.Parse(element.Attribute("value").Value);
        }

        /// <summary>
        /// Gets a color value (in the form needed for inclusion in a CloudPoint) from an XML element.
        /// </summary>
        /// <param name="element">The element.</param>
        /// <returns>The value.</returns>
        public static int GetColor(XElement element)
        {
            return System.Drawing.ColorTranslator.ToWin32(System.Drawing.ColorTranslator.FromHtml(element.Attribute("value").Value));
        }

        /// <summary>
        /// Gets the XML element representing a point.
        /// </summary>
        /// <param name="point">The point.</param>
        /// <param name="name">The name of the XML element.</param>
        /// <returns>The element.</returns>
        public static XElement GetXElement(XYZ point, String name)
        {
            XElement ret = new XElement(name);
            ret.Add(new XAttribute("X", point.X));
            ret.Add(new XAttribute("Y", point.Y));
            ret.Add(new XAttribute("Z", point.Z));

            return ret;
        }

        /// <summary>
        /// Gets the XML element representing a CloudPoint color.
        /// </summary>
        /// <param name="color">The color.</param>
        /// <param name="name">The name.</param>
        /// <returns>The element.</returns>
        public static XElement GetColorXElement(int color, String name)
        {
            XElement ret = new XElement(name);
            string htmlRep = System.Drawing.ColorTranslator.ToHtml(System.Drawing.ColorTranslator.FromWin32(color));
            ret.Add(new XAttribute("value", htmlRep));

            return ret;
        }

        /// <summary>
        /// Gets the XML element representing an object.
        /// </summary>
        /// <param name="obj">The object.</param>
        /// <param name="name">The name.</param>
        /// <returns>The element.</returns>
        public static XElement GetXElement(object obj, String name)
        {
            XElement ret = new XElement(name);
            ret.Add(new XAttribute("value", obj.ToString()));

            return ret;
        }
    }

}