using System;
using System.Collections;
using System.Collections.Generic;
using Server.Network;

namespace Server.Commands.Generic
{
	public class OnlineCommandImplementor : BaseCommandImplementor
	{
		public OnlineCommandImplementor()
		{
			Accessors = new string[]{ "Online" };
			SupportRequirement = CommandSupport.Online;
			SupportsConditionals = true;
			AccessLevel = AccessLevel.Administrator;
			Usage = "Online <command> [condition]";
			Description = "Invokes the command on all mobiles that are currently logged in. Optional condition arguments can further restrict the set of objects.";
		}

		public override void Compile( Mobile from, BaseCommand command, ref string[] args, ref object obj )
		{
			try
			{
				Extensions ext = Extensions.Parse( from, ref args );

				bool items, mobiles;

				if ( !CheckObjectTypes( command, ext, out items, out mobiles ) )
					return;

				if ( !mobiles ) // sanity check
				{
					command.LogFailure( "This command does not support mobiles." );
					return;
				}

				ArrayList list = new ArrayList();

				List<NetState> states = NetState.Instances;

				for ( int i = 0; i < states.Count; ++i )
				{
					NetState ns = states[i];
					Mobile mob = ns.Mobile;

					if ( mob == null )
						continue;

					if( !BaseCommand.IsAccessible( from, mob ) )
						continue;

					if ( ext.IsValid( mob ) )
						list.Add( mob );
				}

				ext.Filter( list );

				obj = list;
			}
			catch ( Exception ex )
			{
				from.SendMessage( ex.Message );
			}
		}
	}
}