using System;
using System.IO;
using System.Xml;
using System.Collections;
using Server;

namespace Server
{
	public class NameList
	{
		private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

		private string m_Type;
		private string[] m_List;

		public string Type{ get{ return m_Type; } }
		public string[] List{ get{ return m_List; } }

		public NameList( string type, XmlElement xml )
		{
			m_Type = type;
			m_List = xml.InnerText.Split( ',' );
			for (int i = m_List.Length - 1; i >= 0; --i)
				m_List[i] = m_List[i].Trim();
		}

		public string GetRandomName()
		{
			if ( m_List.Length > 0 )
				return m_List[Utility.Random( m_List.Length )];

			return "";
		}

		public static NameList GetNameList( string type )
		{
			return (NameList)m_Table[type];
		}

		public static string RandomName( string type )
		{
			NameList list = GetNameList( type );

			if ( list != null )
				return list.GetRandomName();

			return "";
		}

		private static Hashtable m_Table;

		static NameList()
		{
			m_Table = new Hashtable( CaseInsensitiveHashCodeProvider.Default, CaseInsensitiveComparer.Default );

			string filePath = Path.Combine(Core.Config.ConfigDirectory, "names.xml");

			if ( !File.Exists( filePath ) )
				return;

			try
			{
				Load( filePath );
			}
			catch ( Exception e )
			{
				log.Error( "Warning: Exception caught loading name lists", e );
			}
		}

		private static void Load( string filePath )
		{
			XmlDocument doc = new XmlDocument();
			doc.Load( filePath );

			XmlElement root = doc["names"];

			foreach ( XmlElement element in root.GetElementsByTagName( "namelist" ) )
			{
				string type = element.GetAttribute( "type" );

				if ( type == null || type == String.Empty )
					continue;

				try
				{
					NameList list = new NameList( type, element );

					m_Table[type] = list;
				}
				catch
				{
				}
			}
		}
	}
}