using System;

using System.Collections;

using System.Collections.Generic;

using System.IO;

using System.Xml;



namespace Server.Accounting

{

	public class Accounts

	{

		private static Dictionary<string, IAccount> m_Accounts = new Dictionary<string, IAccount>();



		public static void Configure()

		{

			EventSink.WorldLoad += new WorldLoadEventHandler( Load );

			EventSink.WorldSave += new WorldSaveEventHandler( Save );

		}



		static Accounts()

		{

		}



		public static int Count { get { return m_Accounts.Count; } }



		public static ICollection<IAccount> GetAccounts()

		{

#if !MONO

			return m_Accounts.Values;

#else

			return new List<IAccount>( m_Accounts.Values );

#endif

		}



		public static IAccount GetAccount( string username )

		{

			IAccount a;



			m_Accounts.TryGetValue( username, out a );



			return a;

		}



		public static void Add( IAccount a )

		{

			m_Accounts[a.Username] = a;

		}

		

		public static void Remove( string username )

		{

			m_Accounts.Remove( username );

		}



		public static void Load()

		{

			m_Accounts = new Dictionary<string, IAccount>( 32, StringComparer.OrdinalIgnoreCase );



			string filePath = Path.Combine( "Saves/Accounts", "accounts.xml" );



			if ( !File.Exists( filePath ) )

				return;



			XmlDocument doc = new XmlDocument();

			doc.Load( filePath );



			XmlElement root = doc["accounts"];



			foreach ( XmlElement account in root.GetElementsByTagName( "account" ) )

			{

				try

				{

					Account acct = new Account( account );

				}

				catch

				{

					Console.WriteLine( "Warning: Account instance load failed" );

				}

			}

		}



		public static void Save( WorldSaveEventArgs e )

		{

			if ( !Directory.Exists( "Saves/Accounts" ) )

				Directory.CreateDirectory( "Saves/Accounts" );



			string filePath = Path.Combine( "Saves/Accounts", "accounts.xml" );



			using ( StreamWriter op = new StreamWriter( filePath ) )

			{

				XmlTextWriter xml = new XmlTextWriter( op );



				xml.Formatting = Formatting.Indented;

				xml.IndentChar = '\t';

				xml.Indentation = 1;



				xml.WriteStartDocument( true );



				xml.WriteStartElement( "accounts" );



				xml.WriteAttributeString( "count", m_Accounts.Count.ToString() );



				foreach ( Account a in GetAccounts() )

					a.Save( xml );



				xml.WriteEndElement();



				xml.Close();

			}

		}

	}

}