using System.Xml;
using System;

namespace JD.Serialization
{
    #region XML Helper
    public class XMLHelper
    {
        public static string getNodeValue(string nodeName, XmlNode node, string _default)
        {
            if (node != null)
            {
                XmlNode valueNode = node.SelectSingleNode(nodeName);
                if (valueNode != null)
                {
                    XmlAttribute att = valueNode.Attributes["value"];
                    if (att != null)
                    {
                        return att.Value;
                    }
                }
            }

            return _default;
        }
        public static float getNodeValue(string nodeName, XmlNode node, float _default)
        {
            if (node != null)
            {
                XmlNode valueNode = node.SelectSingleNode(nodeName);
                if (valueNode != null)
                {
                    XmlAttribute att = valueNode.Attributes["value"];
                    if (att != null)
                    {
                        return Convert.ToSingle(att.Value);
                    }
                }
            }

            return _default;
        }
        public static bool getNodeValue(string nodeName, XmlNode node, bool _default)
        {
            if (node != null)
            {
                XmlNode valueNode = node.SelectSingleNode(nodeName);
                if (valueNode != null)
                {
                    XmlAttribute att = valueNode.Attributes["value"];
                    if (att != null)
                    {
                        return Convert.ToBoolean(att.Value);
                    }
                }
            }

            return _default;
        }
        public static double getNodeValue(string nodeName, XmlNode node, double _default)
        {
            if (node != null)
            {
                XmlNode valueNode = node.SelectSingleNode(nodeName);
                if (valueNode != null)
                {
                    XmlAttribute att = valueNode.Attributes["value"];
                    if (att != null)
                    {
                        return Convert.ToDouble(att.Value);
                    }
                }
            }

            return _default;
        }
        public static int getNodeValue(string nodeName, XmlNode node, int _default)
        {
            if (node != null)
            {
                XmlNode valueNode = node.SelectSingleNode(nodeName);
                if (valueNode != null)
                {
                    XmlAttribute att = valueNode.Attributes["value"];
                    if (att != null)
                    {
                        return Convert.ToInt32(att.Value);
                    }
                }
            }

            return _default;
        }
        public static uint getNodeValue(string nodeName, XmlNode node, uint _default)
        {
            if (node != null)
            {
                XmlNode valueNode = node.SelectSingleNode(nodeName);
                if (valueNode != null)
                {
                    XmlAttribute att = valueNode.Attributes["value"];
                    if (att != null)
                    {
                        return Convert.ToUInt32(att.Value);
                    }
                }
            }

            return _default;
        }
        public static Vec3d getNodeValue(string nodeName, XmlNode node, Vec3d _default)
        {
            Vec3d result = new Vec3d(_default);
            if (node != null)
            {
                XmlNode valueNode = node.SelectSingleNode(nodeName);
                if (valueNode != null)
                {

                    XmlAttribute att = valueNode.Attributes["x"];
                    if (att != null)
                    {
                        result.X = Convert.ToSingle(att.Value);
                    }
                    att = valueNode.Attributes["y"];
                    if (att != null)
                    {
                        result.Y = Convert.ToSingle(att.Value);
                    }
                    att = valueNode.Attributes["z"];
                    if (att != null)
                    {
                        result.Z = Convert.ToSingle(att.Value);
                    }
                    return result;
                }
            }

            return result;
        }
    }
    #endregion

}