using System.Text;

namespace GlennLib;

/// <summary>
/// The <c>Serializer</c> class, that serializes to and deserializes from XML files.
/// </summary>
public static class Serializer
{
    /// <summary>
    /// Serializes <paramref name="item"/> as a <typeparamref name="T"/> to XML.
    /// </summary>
    /// <typeparam name="T">The class to serialize to.</typeparam>
    /// <param name="item">The object that will be serialized.</param>
    /// <returns>The serialized XML as a <see cref="string"/>.</returns>
    public static string Serialize<T>(object item)
    {
        Type t = typeof(T);
        MemoryStream memStream = new MemoryStream();
        System.Xml.Serialization.XmlSerializer serializer = new System.Xml.Serialization.XmlSerializer(t);

        serializer.Serialize(memStream, item);

        string xml = Encoding.UTF8.GetString(memStream.ToArray());

        memStream.Flush();
        memStream.Close();
        memStream.Dispose();

        return xml;
    }

    /// <summary>
    /// Deserialize <paramref name="xmlString"/> into an object of class <typeparamref name="T"/> that can be assigned.
    /// </summary>
    /// <typeparam name="T">The class that <paramref name="xmlString"/> will be deserialized to.</typeparam>
    /// <param name="xmlString">An XML <see cref="string"/> that will be deserialized.</param>
    /// <returns>A deserialized object of class <typeparamref name="T"/> from <paramref name="xmlString"/>.</returns>
    public static T Deserialize<T>(string xmlString)
    {
        Type t = typeof(T);
        using MemoryStream memStream = new MemoryStream(Encoding.UTF8.GetBytes(xmlString));
        System.Xml.Serialization.XmlSerializer serializer = new System.Xml.Serialization.XmlSerializer(t);
        return (T)serializer.Deserialize(memStream);
    }
}