using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Xml.Linq;
using System.Xml.Serialization;

namespace ArchestrAServices.ASBContract;

public static class SerializationExtensions
{
	private static readonly Dictionary<Type, XmlSerializer> xmlSerializers = new Dictionary<Type, XmlSerializer>();

	private static readonly object serializersLock = new object();

	public static XmlSerializer GetTypeSerializer(Type objectType)
	{
		if (objectType == null)
		{
			return null;
		}
		XmlSerializer xmlSerializer;
		lock (serializersLock)
		{
			if (!xmlSerializers.ContainsKey(objectType))
			{
				string defaultNamespace = "urn:invensys.schemas";
				object[] customAttributes = objectType.GetCustomAttributes(inherit: true);
				if (customAttributes.Length != 0)
				{
					object[] array = customAttributes;
					for (int i = 0; i < array.Length; i++)
					{
						if (array[i] is XmlRootAttribute xmlRootAttribute)
						{
							defaultNamespace = xmlRootAttribute.Namespace;
							break;
						}
					}
				}
				xmlSerializer = new XmlSerializer(objectType, defaultNamespace);
				xmlSerializers.Add(objectType, xmlSerializer);
			}
			else
			{
				xmlSerializer = xmlSerializers[objectType];
			}
		}
		return xmlSerializer;
	}

	public static string ToXml(this object value)
	{
		string text = string.Empty;
		if (value != null)
		{
			try
			{
				using TextWriter textWriter = new StringWriter(CultureInfo.CurrentCulture);
				lock (serializersLock)
				{
					XmlSerializer typeSerializer = GetTypeSerializer(value.GetType());
					if (typeSerializer != null)
					{
						typeSerializer.Serialize(textWriter, value);
						text = textWriter.ToString();
					}
				}
			}
			catch
			{
			}
		}
		if (Environment.Is64BitProcess)
		{
			using TextReader textReader = new StringReader(text);
			using IEnumerator<XElement> enumerator = XDocument.Load(textReader).Elements().GetEnumerator();
			if (enumerator.MoveNext())
			{
				XElement current = enumerator.Current;
				XAttribute xAttribute = current.Attribute(XNamespace.Xmlns + "xsd");
				XAttribute xAttribute2 = current.Attribute(XNamespace.Xmlns + "xsi");
				if (xAttribute != null && xAttribute2 != null)
				{
					current.ReplaceAttributes(xAttribute2, xAttribute);
				}
				using TextWriter textWriter2 = new StringWriter(CultureInfo.CurrentCulture);
				current.Save(textWriter2);
				text = textWriter2.ToString();
			}
		}
		return text;
	}
}