using System;
using System.IO;
using System.Xml.Serialization;

namespace GeoSigma.UCDraw
{
    /// <summary>
    /// Xml 帮助类，用于直接将 xml 转为对象，避免每次写不少重复代码
    /// </summary>
    public static class XmlHelper
    {
        /// <summary>
        /// 将 xml 转为对象
        /// </summary>
        /// <param name="type">对象类型</param>
        /// <param name="xml">xml字符串</param>
        /// <returns>目标类对象</returns>
        public static object Deserialize(Type type, string xml)
        {
            if (string.IsNullOrWhiteSpace(xml))
            {
                throw new ArgumentNullException(nameof(xml));
            }

            var serializer = new XmlSerializer(type);
            using (var reader = new StringReader(xml))
            {
                return serializer.Deserialize(reader);
            }
        }

        /// <summary>
        /// 序列化为 xml
        /// </summary>
        /// <param name="obj">对象</param>
        /// <param name="overrides">overrides</param>
        /// <returns>xml 字符串</returns>
        public static string Serialize(object obj)
        {
            if (obj == null)
            {
                throw new ArgumentNullException(nameof(obj));
            }

            var serializer = new XmlSerializer(obj.GetType());
            using (var writer = new StringWriter())
            {
                serializer.Serialize(writer, obj);
                return writer.ToString();
            }
        }
    }
}