/**
 * System commands
 * Pokemon Showdown - http://pokemonshowdown.com/
 *
 * These are system commands - commands required for Pokemon Showdown
 * to run. A lot of these are sent by the client.
 *
 * If you'd like to modify commands, please go to config/commands.js,
 * which also teaches you how to use commands.
 *
 * @license MIT license
 */

var crypto = require('crypto');

var commands = exports.commands = {

	version: function(target, room, user) {
		if (!this.canBroadcast()) return;
		this.sendReplyBox('Server version: <b>'+CommandParser.package.version+'</b> <small>(<a href="http://pokemonshowdown.com/versions#' + CommandParser.serverVersion + '" target="_blank">' + CommandParser.serverVersion.substr(0,10) + '</a>)</small>');
	},

	me: function(target, room, user, connection) {
		target = this.canTalk(target);
		if (!target) return;

		return '/me ' + target;
	},

	mee: function(target, room, user, connection) {
		target = this.canTalk(target);
		if (!target) return;

		return '/mee ' + target;
	},

	avatar: function(target, room, user) {
		if (!target) return this.parse('/avatars');
		var parts = target.split(',');
		var avatar = parseInt(parts[0]);
		if (!avatar || avatar > 294 || avatar < 1) {
			if (!parts[1]) {
				this.sendReply("Invalid avatar.");
			}
			return false;
		}

		user.avatar = avatar;
		if (!parts[1]) {
			this.sendReply("Avatar changed to:\n" +
					'|raw|<img src="//play.pokemonshowdown.com/sprites/trainers/'+avatar+'.png" alt="" width="80" height="80" />');
		}
	},

	logout: function(target, room, user) {
		user.resetName();
	},

	r: 'reply',
	reply: function(target, room, user) {
		if (!target) return this.parse('/help reply');
		if (!user.lastPM) {
			return this.sendReply('No one has PMed you yet.');
		}
		return this.parse('/msg '+(user.lastPM||'')+', '+target);
	},

	pm: 'msg',
	whisper: 'msg',
	w: 'msg',
	msg: function(target, room, user) {
		if (!target) return this.parse('/help msg');
		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!target) {
			this.sendReply('You forgot the comma.');
			return this.parse('/help msg');
		}
		if (!targetUser || !targetUser.connected) {
			if (!target) {
				this.sendReply('User '+this.targetUsername+' not found. Did you forget a comma?');
			} else {
				this.sendReply('User '+this.targetUsername+' not found. Did you misspell their name?');
			}
			return this.parse('/help msg');
		}

		if (user.locked && !targetUser.can('lock', user)) {
			return this.popupReply('You can only private message members of the moderation team (users marked by %, @, &, or ~) when locked.');
		}
		if (targetUser.locked && !user.can('lock', targetUser)) {
			return this.popupReply('This user is locked and cannot PM.');
		}

		if (!user.named) {
			return this.popupReply('You must choose a name before you can send private messages.');
		}

		var message = '|pm|'+user.getIdentity()+'|'+targetUser.getIdentity()+'|'+target;
		user.send(message);
		if (targetUser !== user) targetUser.send(message);
		targetUser.lastPM = user.userid;
		user.lastPM = targetUser.userid;
	},

	makechatroom: function(target, room, user) {
		if (!this.can('makeroom')) return;
		if (Rooms.rooms[target]) {
			return this.sendReply("The room '"+target+"' already exists.");
		}
		Rooms.rooms[target] = new Rooms.ChatRoom(toId(target), target);
		return this.sendReply("The room '"+target+"' was created.");
	},

	privateroom: function(target, room, user) {
		if (!this.can('makeroom')) return;
		if (target === 'off') {
			room.isPrivate = false;
			this.addModCommand(user.name+' made the room public.');
		} else {
			room.isPrivate = true;
			this.addModCommand(user.name+' made the room private.');
		}
	},

	join: function(target, room, user, connection) {
		var targetRoom = Rooms.get(target);
		if (target && !targetRoom) {
			return connection.sendTo(target, "|noinit|nonexistent|The room '"+target+"' does not exist.");
		}
		if (targetRoom && !targetRoom.battle && targetRoom !== Rooms.lobby && !user.named) {
			return connection.sendTo(target, "|noinit|namerequired|You must have a name in order to join the room '"+target+"'.");
		}
		if (!user.joinRoom(targetRoom || room, connection)) {
			// This condition appears to be impossible for now.
			return connection.sendTo(target, "|noinit|joinfailed|The room '"+target+"' could not be joined.");
		}
	},

	leave: 'part',
	part: function(target, room, user, connection) {
		if (room.id === 'global') return false;
		var targetRoom = Rooms.get(target);
		if (target && !targetRoom) {
			return this.sendReply("The room '"+target+"' does not exist.");
		}
		user.leaveRoom(targetRoom || room, connection);
	},

	/*********************************************************
	 * Moderating: Punishments
	 *********************************************************/

	kick: 'warn',
	k: 'warn',
	warn: function(target, room, user) {
		if (!target) return this.parse('/help warn');

		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!targetUser || !targetUser.connected) {
			return this.sendReply('User '+this.targetUsername+' not found.');
		}
		if (!this.can('warn', targetUser)) return false;

		this.addModCommand(''+targetUser.name+' was warned by '+user.name+'.' + (target ? " (" + target + ")" : ""));
		targetUser.send('|c|~|/warn '+target);
	},

	m: 'mute',
	mute: function(target, room, user) {
		if (!target) return this.parse('/help mute');

		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!targetUser) {
			return this.sendReply('User '+this.targetUsername+' not found.');
		}
		if (!this.can('mute', targetUser)) return false;
		if (targetUser.muteDuration[room.id] || targetUser.locked || !targetUser.connected) {
			var problem = ' but was already '+(!targetUser.connected ? 'offline' : targetUser.locked ? 'locked' : 'muted');
			if (!target) {
				return this.privateModCommand('('+targetUser.name+' would be muted by '+user.name+problem+'.)');
			}
			return this.addModCommand(''+targetUser.name+' would be muted by '+user.name+problem+'.' + (target ? " (" + target + ")" : ""));
		}

		targetUser.popup(user.name+' has muted you for 7 minutes. '+target);
		this.addModCommand(''+targetUser.name+' was muted by '+user.name+' for 7 minutes.' + (target ? " (" + target + ")" : ""));
		var alts = targetUser.getAlts();
		if (alts.length) this.addModCommand(""+targetUser.name+"'s alts were also muted: "+alts.join(", "));

		targetUser.mute(room.id, 7*60*1000);
	},

	hourmute: function(target, room, user) {
		if (!target) return this.parse('/help hourmute');

		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!targetUser) {
			return this.sendReply('User '+this.targetUsername+' not found.');
		}
		if (!this.can('mute', targetUser)) return false;

		if (((targetUser.muteDuration[room.id]||0) >= 50*60*1000 || targetUser.locked) && !target) {
			var problem = ' but was already '+(!targetUser.connected ? 'offline' : targetUser.locked ? 'locked' : 'muted');
			return this.privateModCommand('('+targetUser.name+' would be muted by '+user.name+problem+'.)');
		}

		targetUser.popup(user.name+' has muted you for 60 minutes. '+target);
		this.addModCommand(''+targetUser.name+' was muted by '+user.name+' for 60 minutes.' + (target ? " (" + target + ")" : ""));
		var alts = targetUser.getAlts();
		if (alts.length) this.addModCommand(""+targetUser.name+"'s alts were also muted: "+alts.join(", "));

		targetUser.mute(room.id, 60*60*1000, true);
	},

	um: 'unmute',
	unmute: function(target, room, user) {
		if (!target) return this.parse('/help something');
		var targetid = toUserid(target);
		var targetUser = Users.get(target);
		if (!targetUser) {
			return this.sendReply('User '+target+' not found.');
		}
		if (!this.can('mute', targetUser)) return false;

		if (!targetUser.mutedRooms[room.id]) {
			return this.sendReply(''+targetUser.name+' isn\'t muted.');
		}

		this.addModCommand(''+targetUser.name+' was unmuted by '+user.name+'.');

		targetUser.unmute(room.id);
	},

	ipmute: 'lock',
	lock: function(target, room, user) {
		if (!target) return this.parse('/help lock');

		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!targetUser) {
			return this.sendReply('User '+this.targetUser+' not found.');
		}
		if (!user.can('lock', targetUser)) {
			return this.sendReply('/lock - Access denied.');
		}

		if ((targetUser.locked || Users.checkBanned(Object.keys(targetUser.ips)[0])) && !target) {
			var problem = ' but was already '+(targetUser.locked ? 'locked' : 'banned');
			return this.privateModCommand('('+targetUser.name+' would be locked by '+user.name+problem+'.)');
		}

		targetUser.popup(user.name+' has locked you from talking in chats, battles, and PMing regular users.\n\n'+target+'\n\nIf you feel that your lock was unjustified, you can still PM staff members (%, @, &, and ~) to discuss it.');

		this.addModCommand(""+targetUser.name+" was locked from talking by "+user.name+"." + (target ? " (" + target + ")" : ""));
		var alts = targetUser.getAlts();
		if (alts.length) this.addModCommand(""+targetUser.name+"'s alts were also locked: "+alts.join(", "));

		targetUser.lock();
	},

	unlock: function(target, room, user) {
		if (!target) return this.parse('/help unlock');
		if (!this.can('lock')) return false;

		var unlocked = Users.unlock(target);

		if (unlocked) {
			var names = Object.keys(unlocked);
			this.addModCommand('' + names.join(', ') + ' ' +
					((names.length > 1) ? 'were' : 'was') +
					' unlocked by ' + user.name + '.');
		} else {
			this.sendReply('User '+target+' is not locked.');
		}
	},

	b: 'ban',
	ban: function(target, room, user) {
		if (!target) return this.parse('/help ban');

		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!targetUser) {
			return this.sendReply('User '+this.targetUsername+' not found.');
		}
		if (!this.can('ban', targetUser)) return false;

		if (Users.checkBanned(Object.keys(targetUser.ips)[0]) && !target) {
			var problem = ' but was already banned';
			return this.privateModCommand('('+targetUser.name+' would be banned by '+user.name+problem+'.)');
		}

		targetUser.popup(user.name+" has banned you.  If you feel that your banning was unjustified you can appeal the ban:\nhttp://www.smogon.com/forums/announcement.php?f=126&a=204\n\n"+target);

		this.addModCommand(""+targetUser.name+" was banned by "+user.name+"." + (target ? " (" + target + ")" : ""));
		var alts = targetUser.getAlts();
		if (alts.length) this.addModCommand(""+targetUser.name+"'s alts were also banned: "+alts.join(", "));

		targetUser.ban();
	},

	unban: function(target, room, user) {
		if (!target) return this.parse('/help unban');
		if (!user.can('ban')) {
			return this.sendReply('/unban - Access denied.');
		}

		var name = Users.unban(target);

		if (name) {
			this.addModCommand(''+name+' was unbanned by '+user.name+'.');
		} else {
			this.sendReply('User '+target+' is not banned.');
		}
	},

	unbanall: function(target, room, user) {
		if (!user.can('ban')) {
			return this.sendReply('/unbanall - Access denied.');
		}
		// we have to do this the hard way since it's no longer a global
		for (var i in Users.bannedIps) {
			delete Users.bannedIps[i];
		}
		for (var i in Users.lockedIps) {
			delete Users.lockedIps[i];
		}
		this.addModCommand('All bans and locks have been lifted by '+user.name+'.');
	},

	banip: function(target, room, user) {
		target = target.trim();
		if (!target) {
			return this.parse('/help banip');
		}
		if (!this.can('rangeban')) return false;

		Users.bannedIps[target] = '#ipban';
		this.addModCommand(user.name+' temporarily banned the '+(target.charAt(target.length-1)==='*'?'IP range':'IP')+': '+target);
	},

	unbanip: function(target, room, user) {
		target = target.trim();
		if (!target) {
			return this.parse('/help unbanip');
		}
		if (!this.can('rangeban')) return false;
		if (!Users.bannedIps[target]) {
			return this.sendReply(''+target+' is not a banned IP or IP range.');
		}
		delete Users.bannedIps[target];
		this.addModCommand(user.name+' unbanned the '+(target.charAt(target.length-1)==='*'?'IP range':'IP')+': '+target);
	},

	/*********************************************************
	 * Moderating: Other
	 *********************************************************/

	demote: 'promote',
	promote: function(target, room, user, connection, cmd) {
		if (!target) return this.parse('/help promote');
		var target = this.splitTarget(target, true);
		var targetUser = this.targetUser;
		var userid = toUserid(this.targetUsername);
		var name = targetUser ? targetUser.name : this.targetUsername;

		var currentGroup = ' ';
		if (targetUser) {
			currentGroup = targetUser.group;
		} else if (Users.usergroups[userid]) {
			currentGroup = Users.usergroups[userid].substr(0,1);
		}

		var nextGroup = target ? target : Users.getNextGroupSymbol(currentGroup, cmd === 'demote');
		if (target === 'deauth') nextGroup = config.groupsranking[0];
		if (!config.groups[nextGroup]) {
			return this.sendReply('Group \'' + nextGroup + '\' does not exist.');
		}
		if (!user.checkPromotePermission(currentGroup, nextGroup)) {
			return this.sendReply('/promote - Access denied.');
		}

		var isDemotion = (config.groups[nextGroup].rank < config.groups[currentGroup].rank);
		if (!Users.setOfflineGroup(name, nextGroup)) {
			return this.sendReply('/promote - WARNING: This user is offline and could be unregistered. Use /forcepromote if you\'re sure you want to risk it.');
		}
		var groupName = (config.groups[nextGroup].name || nextGroup || '').trim() || 'a regular user';
		if (isDemotion) {
			this.privateModCommand('('+name+' was demoted to ' + groupName + ' by '+user.name+'.)');
			if (targetUser) {
				targetUser.popup('You were demoted to ' + groupName + ' by ' + user.name + '.');
			}
		} else {
			this.addModCommand(''+name+' was promoted to ' + groupName + ' by '+user.name+'.');
		}
		if (targetUser) {
			targetUser.updateIdentity();
		}
	},

	forcepromote: function(target, room, user) {
		// warning: never document this command in /help
		if (!this.can('forcepromote')) return false;
		var target = this.splitTarget(target, true);
		var name = this.targetUsername;
		var nextGroup = target ? target : Users.getNextGroupSymbol(' ', false);

		if (!Users.setOfflineGroup(name, nextGroup, true)) {
			return this.sendReply('/forcepromote - Don\'t forcepromote unless you have to.');
		}
		var groupName = config.groups[nextGroup].name || nextGroup || '';
		this.addModCommand(''+name+' was promoted to ' + (groupName.trim()) + ' by '+user.name+'.');
	},

	deauth: function(target, room, user) {
		return this.parse('/demote '+target+', deauth');
	},

	modchat: function(target, room, user) {
		if (!target) {
			return this.sendReply('Moderated chat is currently set to: '+config.modchat);
		}
		if (!this.can('modchat') || !this.canTalk()) return false;

		target = target.toLowerCase();
		switch (target) {
		case 'on':
		case 'true':
		case 'yes':
			this.sendReply("If you're dealing with a spammer, make sure to run /loadbanlist first.");
			this.sendReply("That said, the command you've been looking for has been renamed to: /modchat registered");
			return false;
			break;
		case 'registered':
			if (!user.can('modchatall')) {
				return this.sendReply('/modchat - Access denied for registered setting.');
			}
			config.modchat = true;
			break;
		case 'off':
		case 'false':
		case 'no':
			config.modchat = false;
			break;
		default:
			if (!config.groups[target]) {
				return this.parse('/help modchat');
			}
			if (config.groupsranking.indexOf(target) > 1 && !user.can('modchatall')) {
				return this.sendReply('/modchat - Access denied for setting higher than ' + config.groupsranking[1] + '.');
			}
			config.modchat = target;
			break;
		}
		if (config.modchat === true) {
			this.add('|raw|<div class="broadcast-red"><b>Moderated chat was enabled!</b><br />Only registered users can talk.</div>');
		} else if (!config.modchat) {
			this.add('|raw|<div class="broadcast-blue"><b>Moderated chat was disabled!</b><br />Anyone may talk now.</div>');
		} else {
			var modchat = sanitize(config.modchat);
			this.add('|raw|<div class="broadcast-red"><b>Moderated chat was set to '+modchat+'!</b><br />Only users of rank '+modchat+' and higher can talk.</div>');
		}
		this.logModCommand(user.name+' set modchat to '+config.modchat);
	},

	declare: function(target, room, user) {
		if (!target) return this.parse('/help declare');
		if (!this.can('declare')) return false;

		if (!this.canTalk()) return;

		this.add('|raw|<div class="broadcast-blue"><b>'+target+'</b></div>');
		this.logModCommand(user.name+' declared '+target);
	},

	wall: 'announce',
	announce: function(target, room, user) {
		if (!target) return this.parse('/help announce');
		if (!this.can('announce')) return false;

		target = this.canTalk(target);
		if (!target) return;

		return '/announce '+target;
	},

	fr: 'forcerename',
	forcerename: function(target, room, user) {
		if (!target) return this.parse('/help forcerename');
		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!targetUser) {
			return this.sendReply('User '+this.targetUsername+' not found.');
		}
		if (!this.can('forcerename', targetUser)) return false;

		if (targetUser.userid === toUserid(this.targetUser)) {
			var entry = ''+targetUser.name+' was forced to choose a new name by '+user.name+'.' + (target ? " (" + target + ")" : "");
			this.logModCommand(entry);
			Rooms.lobby.sendAuth(entry);
			if (room.id !== 'lobby') {
				this.add(entry);
			} else {
				this.logEntry(entry);
			}
			targetUser.resetName();
			targetUser.send('|nametaken||'+user.name+" has forced you to change your name. "+target);
		} else {
			this.sendReply("User "+targetUser.name+" is no longer using that name.");
		}
	},

	frt: 'forcerenameto',
	forcerenameto: function(target, room, user) {
		if (!target) return this.parse('/help forcerenameto');
		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!targetUser) {
			return this.sendReply('User '+this.targetUsername+' not found.');
		}
		if (!target) {
			return this.sendReply('No new name was specified.');
		}
		if (!this.can('forcerenameto', targetUser)) return false;

		if (targetUser.userid === toUserid(this.targetUser)) {
			var entry = ''+targetUser.name+' was forcibly renamed to '+target+' by '+user.name+'.';
			this.logModCommand(entry);
			Rooms.lobby.sendAuth(entry);
			if (room.id !== 'lobby') {
				room.add(entry);
			} else {
				room.logEntry(entry);
			}
			targetUser.forceRename(target);
		} else {
			this.sendReply("User "+targetUser.name+" is no longer using that name.");
		}
	},

	modlog: function(target, room, user, connection) {
		if (!this.can('modlog')) return false;
		var lines = 0;
		if (!target.match('[^0-9]')) { 
			lines = parseInt(target || 15, 10);
			if (lines > 100) lines = 100;
		}
		var filename = 'logs/modlog.txt';
		var command = 'tail -'+lines+' '+filename;
		var grepLimit = 100;
		if (!lines || lines < 0) { // searching for a word instead
			if (target.match(/^["'].+["']$/)) target = target.substring(1,target.length-1);
			command = "awk '{print NR,$0}' "+filename+" | sort -nr | cut -d' ' -f2- | grep -m"+grepLimit+" -i '"+target.replace(/\\/g,'\\\\\\\\').replace(/["'`]/g,'\'\\$&\'').replace(/[\{\}\[\]\(\)\$\^\.\?\+\-\*]/g,'[$&]')+"'";
		}

		require('child_process').exec(command, function(error, stdout, stderr) {
			if (error && stderr) {
				connection.popup('/modlog erred - modlog does not support Windows');
				console.log('/modlog error: '+error);
				return false;
			}
			if (lines) {
				if (!stdout) {
					connection.popup('The modlog is empty. (Weird.)');
				} else {
					connection.popup('Displaying the last '+lines+' lines of the Moderator Log:\n\n'+stdout);
				}
			} else {
				if (!stdout) {
					connection.popup('No moderator actions containing "'+target+'" were found.');
				} else {
					connection.popup('Displaying the last '+grepLimit+' logged actions containing "'+target+'":\n\n'+stdout);
				}
			}
		});
	},

	bw: 'banword',
	banword: function(target, room, user) {
		if (!this.can('declare')) return false;
		target = toId(target);
		if (!target) {
			return this.sendReply('Specify a word or phrase to ban.');
		}
		Users.addBannedWord(target);
		this.sendReply('Added \"'+target+'\" to the list of banned words.');
	},

	ubw: 'unbanword',
	unbanword: function(target, room, user) {
		if (!this.can('declare')) return false;
		target = toId(target);
		if (!target) {
			return this.sendReply('Specify a word or phrase to unban.');
		}
		Users.removeBannedWord(target);
		this.sendReply('Removed \"'+target+'\" from the list of banned words.');
	},

	/*********************************************************
	 * Server management commands
	 *********************************************************/

	hotpatch: function(target, room, user) {
		if (!target) return this.parse('/help hotpatch');
		if (!this.can('hotpatch')) return false;

		if (target === 'chat') {

			CommandParser.uncacheTree('./command-parser.js');
			CommandParser = require('./command-parser.js');
			return this.sendReply('Chat commands have been hot-patched.');

		} else if (target === 'battles') {

			Simulator.SimulatorProcess.respawn();
			return this.sendReply('Battles have been hotpatched. Any battles started after now will use the new code; however, in-progress battles will continue to use the old code.');

		} else if (target === 'formats') {

			// uncache the tools.js dependency tree
			CommandParser.uncacheTree('./tools.js');
			// reload tools.js
			Data = {};	
			Tools = require('./tools.js'); // note: this will lock up the server for a few seconds
			// rebuild the formats list
			Rooms.global.formatListText = Rooms.global.getFormatListText();
			// respawn simulator processes
			Simulator.SimulatorProcess.respawn();
			// broadcast the new formats list to clients
			Rooms.global.send(Rooms.global.formatListText);

			return this.sendReply('Formats have been hotpatched.');

		}
		this.sendReply('Your hot-patch command was unrecognized.');
	},

	savelearnsets: function(target, room, user) {
		if (this.can('hotpatch')) return false;
		fs.writeFile('data/learnsets.js', 'exports.BattleLearnsets = '+JSON.stringify(BattleLearnsets)+";\n");
		this.sendReply('learnsets.js saved.');
	},

	disableladder: function(target, room, user) {
		if (!this.can('disableladder')) return false;
		if (LoginServer.disabled) {
			return this.sendReply('/disableladder - Ladder is already disabled.');
		}
		LoginServer.disabled = true;
		this.logModCommand('The ladder was disabled by ' + user.name + '.');
		this.add('|raw|<div class="broadcast-red"><b>Due to high server load, the ladder has been temporarily disabled</b><br />Rated games will no longer update the ladder. It will be back momentarily.</div>');
	},

	enableladder: function(target, room, user) {
		if (!this.can('disableladder')) return false;
		if (!LoginServer.disabled) {
			return this.sendReply('/enable - Ladder is already enabled.');
		}
		LoginServer.disabled = false;
		this.logModCommand('The ladder was enabled by ' + user.name + '.');
		this.add('|raw|<div class="broadcast-green"><b>The ladder is now back.</b><br />Rated games will update the ladder now.</div>');
	},

	lockdown: function(target, room, user) {
		if (!this.can('lockdown')) return false;

		lockdown = true;
		for (var id in Rooms.rooms) {
			if (id !== 'global') Rooms.rooms[id].addRaw('<div class="broadcast-red"><b>The server is restarting soon.</b><br />Please finish your battles quickly. No new battles can be started until the server resets in a few minutes.</div>');
			if (Rooms.rooms[id].requestKickInactive) Rooms.rooms[id].requestKickInactive(user, true);
		}

		Rooms.lobby.logEntry(user.name + ' used /lockdown');

	},

	endlockdown: function(target, room, user) {
		if (!this.can('lockdown')) return false;

		lockdown = false;
		for (var id in Rooms.rooms) {
			if (id !== 'global') Rooms.rooms[id].addRaw('<div class="broadcast-green"><b>The server shutdown was canceled.</b></div>');
		}

		Rooms.lobby.logEntry(user.name + ' used /endlockdown');

	},

	kill: function(target, room, user) {
		if (!this.can('lockdown')) return false;

		if (!lockdown) {
			return this.sendReply('For safety reasons, /kill can only be used during lockdown.');
		}

		if (CommandParser.updateServerLock) {
			return this.sendReply('Wait for /updateserver to finish before using /kill.');
		}

		Rooms.lobby.destroyLog(function() {
			Rooms.lobby.logEntry(user.name + ' used /kill');
		}, function() {
			process.exit();
		});

		// Just in the case the above never terminates, kill the process
		// after 10 seconds.
		setTimeout(function() {
			process.exit();
		}, 10000);
	},

	loadbanlist: function(target, room, user, connection) {
		if (!this.can('modchat')) return false;

		connection.sendTo(room, 'Loading ipbans.txt...');
		fs.readFile('config/ipbans.txt', function (err, data) {
			if (err) return;
			data = (''+data).split("\n");
			var count = 0;
			for (var i=0; i<data.length; i++) {
				if (data[i] && !Users.bannedIps[data[i]]) {
					Users.bannedIps[data[i]] = '#ipban';
					count++;
				}
			}
			if (!count) {
				connection.sendTo(room, 'No IPs were banned; ipbans.txt has not been updated since the last time /loadbanlist was called.');
			} else {
				connection.sendTo(room, ''+count+' IPs were loaded from ipbans.txt and banned.');
			}
		});
	},

	refreshpage: function(target, room, user) {
		if (!this.can('hotpatch')) return false;
		Rooms.lobby.send('|refresh|');
		Rooms.lobby.logEntry(user.name + ' used /refreshpage');
	},

	updateserver: function(target, room, user, connection) {
		if (!user.checkConsolePermission(connection.socket)) {
			return this.sendReply('/updateserver - Access denied.');
		}

		if (CommandParser.updateServerLock) {
			return this.sendReply('/updateserver - Another update is already in progress.');
		}

		CommandParser.updateServerLock = true;

		var logQueue = [];
		logQueue.push(user.name + ' used /updateserver');

		connection.sendTo(room, 'updating...');

		var exec = require('child_process').exec;
		exec('git diff-index --quiet HEAD --', function(error) {
			var cmd = 'git pull --rebase';
			if (error) {
				if (error.code === 1) {
					// The working directory or index have local changes.
					cmd = 'git stash;' + cmd + ';git stash pop';
				} else {
					// The most likely case here is that the user does not have
					// `git` on the PATH (which would be error.code === 127).
					connection.sendTo(room, '' + error);
					logQueue.push('' + error);
					logQueue.forEach(Rooms.lobby.logEntry.bind(Rooms.lobby));
					CommandParser.updateServerLock = false;
					return;
				}
			}
			var entry = 'Running `' + cmd + '`';
			connection.sendTo(room, entry);
			logQueue.push(entry);
			exec(cmd, function(error, stdout, stderr) {
				('' + stdout + stderr).split('\n').forEach(function(s) {
					connection.sendTo(room, s);
					logQueue.push(s);
				});
				logQueue.forEach(Rooms.lobby.logEntry.bind(Rooms.lobby));
				CommandParser.updateServerLock = false;
			});
		});
	},

	crashfixed: function(target, room, user) {
		if (!lockdown) {
			return this.sendReply('/crashfixed - There is no active crash.');
		}
		if (!this.can('hotpatch')) return false;

		lockdown = false;
		config.modchat = false;
		Rooms.lobby.addRaw('<div class="broadcast-green"><b>We fixed the crash without restarting the server!</b><br />You may resume talking in the lobby and starting new battles.</div>');
		Rooms.lobby.logEntry(user.name + ' used /crashfixed');
	},

	crashlogged: function(target, room, user) {
		if (!lockdown) {
			return this.sendReply('/crashlogged - There is no active crash.');
		}
		if (!this.can('declare')) return false;

		lockdown = false;
		config.modchat = false;
		Rooms.lobby.addRaw('<div class="broadcast-green"><b>We have logged the crash and are working on fixing it!</b><br />You may resume talking in the lobby and starting new battles.</div>');
		Rooms.lobby.logEntry(user.name + ' used /crashlogged');
	},

	eval: function(target, room, user, connection, cmd, message) {
		if (!user.checkConsolePermission(connection.socket)) {
			return this.sendReply("/eval - Access denied.");
		}
		if (!this.canBroadcast()) return;

		if (!this.broadcasting) this.sendReply('||>> '+target);
		try {
			var battle = room.battle;
			var me = user;
			this.sendReply('||<< '+eval(target));
		} catch (e) {
			this.sendReply('||<< error: '+e.message);
			var stack = '||'+(''+e.stack).replace(/\n/g,'\n||');
			connection.sendTo(room, stack);
		}
	},

	evalbattle: function(target, room, user, connection, cmd, message) {
		if (!user.checkConsolePermission(connection.socket)) {
			return this.sendReply("/evalbattle - Access denied.");
		}
		if (!this.canBroadcast()) return;
		if (!room.battle) {
			return this.sendReply("/evalbattle - This isn't a battle room.");
		}

		room.battle.send('eval', target.replace(/\n/g, '\f'));
	},

	/*********************************************************
	 * Battle commands
	 *********************************************************/

	concede: 'forfeit',
	surrender: 'forfeit',
	forfeit: function(target, room, user) {
		if (!room.battle) {
			return this.sendReply("There's nothing to forfeit here.");
		}
		if (!room.forfeit(user)) {
			return this.sendReply("You can't forfeit this battle.");
		}
	},

	savereplay: function(target, room, user, connection) {
		if (!room || !room.battle) return;
		var logidx = 2; // spectator log (no exact HP)
		if (room.battle.ended) {
			// If the battle is finished when /savereplay is used, include
			// exact HP in the replay log.
			logidx = 3;
		}
		var data = room.getLog(logidx).join("\n");
		var datahash = crypto.createHash('md5').update(data.replace(/[^(\x20-\x7F)]+/g,'')).digest('hex');

		LoginServer.request('prepreplay', {
			id: room.id.substr(7),
			loghash: datahash,
			p1: room.p1.name,
			p2: room.p2.name,
			format: room.format
		}, function(success) {
			connection.send('|queryresponse|savereplay|'+JSON.stringify({
				log: data,
				room: 'lobby',
				id: room.id.substr(7)
			}));
		});
	},

	mv: 'move',
	attack: 'move',
	move: function(target, room, user) {
		if (!room.decision) return this.sendReply('You can only do this in battle rooms.');

		room.decision(user, 'choose', 'move '+target);
	},

	sw: 'switch',
	switch: function(target, room, user) {
		if (!room.decision) return this.sendReply('You can only do this in battle rooms.');

		room.decision(user, 'choose', 'switch '+parseInt(target,10));
	},

	choose: function(target, room, user) {
		if (!room.decision) return this.sendReply('You can only do this in battle rooms.');

		room.decision(user, 'choose', target);
	},

	undo: function(target, room, user) {
		if (!room.decision) return this.sendReply('You can only do this in battle rooms.');

		room.decision(user, 'undo', target);
	},

	team: function(target, room, user) {
		if (!room.decision) return this.sendReply('You can only do this in battle rooms.');

		room.decision(user, 'choose', 'team '+target);
	},

	joinbattle: function(target, room, user) {
		if (!room.joinBattle) return this.sendReply('You can only do this in battle rooms.');

		room.joinBattle(user);
	},

	partbattle: 'leavebattle',
	leavebattle: function(target, room, user) {
		if (!room.leaveBattle) return this.sendReply('You can only do this in battle rooms.');

		room.leaveBattle(user);
	},

	kickbattle: function(target, room, user) {
		if (!room.leaveBattle) return this.sendReply('You can only do this in battle rooms.');

		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!targetUser || !targetUser.connected) {
			return this.sendReply('User '+this.targetUsername+' not found.');
		}
		if (!this.can('kick', targetUser)) return false;

		if (room.leaveBattle(targetUser)) {
			this.addModCommand(''+targetUser.name+' was kicked from a battle by '+user.name+'' + (target ? " (" + target + ")" : ""));
		} else {
			this.sendReply("/kickbattle - User isn\'t in battle.");
		}
	},

	kickinactive: function(target, room, user) {
		if (room.requestKickInactive) {
			room.requestKickInactive(user);
		} else {
			this.sendReply('You can only kick inactive players from inside a room.');
		}
	},

	timer: function(target, room, user) {
		target = toId(target);
		if (room.requestKickInactive) {
			if (target === 'off' || target === 'stop') {
				room.stopKickInactive(user, user.can('timer'));
			} else if (target === 'on' || !target) {
				room.requestKickInactive(user, user.can('timer'));
			} else {
				this.sendReply("'"+target+"' is not a recognized timer state.");
			}
		} else {
			this.sendReply('You can only set the timer from inside a room.');
		}
	},

	forcetie: 'forcewin',
	forcewin: function(target, room, user) {
		if (!this.can('forcewin')) return false;
		if (!room.battle) {
			this.sendReply('/forcewin - This is not a battle room.');
		}

		room.battle.endType = 'forced';
		if (!target) {
			room.battle.tie();
			this.logModCommand(user.name+' forced a tie.');
			return false;
		}
		target = Users.get(target);
		if (target) target = target.userid;
		else target = '';

		if (target) {
			room.battle.win(target);
			this.logModCommand(user.name+' forced a win for '+target+'.');
		}

	},

	/*********************************************************
	 * Challenging and searching commands
	 *********************************************************/

	cancelsearch: 'search',
	search: function(target, room, user) {
		if (target) {
			Rooms.global.searchBattle(user, target);
		} else {
			Rooms.global.cancelSearch(user);
		}
	},

	chall: 'challenge',
	challenge: function(target, room, user) {
		target = this.splitTarget(target);
		var targetUser = this.targetUser;
		if (!targetUser || !targetUser.connected) {
			return this.popupReply("The user '"+this.targetUsername+"' was not found.");
		}
		if (targetUser.blockChallenges && !user.can('bypassblocks', targetUser)) {
			return this.popupReply("The user '"+this.targetUsername+"' is not accepting challenges right now.");
		}
		if (typeof target !== 'string') target = 'customgame';
		var problems = Tools.validateTeam(user.team, target);
		if (problems) {
			return this.popupReply("Your team was rejected for the following reasons:\n\n- "+problems.join("\n- "));
		}
		user.makeChallenge(targetUser, target);
	},

	away: 'blockchallenges',
	idle: 'blockchallenges',
	blockchallenges: function(target, room, user) {
		user.blockChallenges = true;
		this.sendReply('You are now blocking all incoming challenge requests.');
	},

	back: 'allowchallenges',
	allowchallenges: function(target, room, user) {
		user.blockChallenges = false;
		this.sendReply('You are available for challenges from now on.');
	},

	cchall: 'cancelChallenge',
	cancelchallenge: function(target, room, user) {
		user.cancelChallengeTo(target);
	},

	accept: function(target, room, user) {
		var userid = toUserid(target);
		var format = '';
		if (user.challengesFrom[userid]) format = user.challengesFrom[userid].format;
		if (!format) {
			this.popupReply(target+" cancelled their challenge before you could accept it.");
			return false;
		}
		var problems = Tools.validateTeam(user.team, format);
		if (problems) {
			this.popupReply("Your team was rejected for the following reasons:\n\n- "+problems.join("\n- "));
			return false;
		}
		user.acceptChallengeFrom(userid);
	},

	reject: function(target, room, user) {
		user.rejectChallengeFrom(toUserid(target));
	},

	saveteam: 'useteam',
	utm: 'useteam',
	useteam: function(target, room, user) {
		try {
			user.team = JSON.parse(target);
		} catch (e) {
			this.popupReply('Not a valid team.');
		}
	},

	/*********************************************************
	 * Low-level
	 *********************************************************/

	cmd: 'query',
	query: function(target, room, user, connection) {
		var spaceIndex = target.indexOf(' ');
		var cmd = target;
		if (spaceIndex > 0) {
			cmd = target.substr(0, spaceIndex);
			target = target.substr(spaceIndex+1);
		} else {
			target = '';
		}
		if (cmd === 'userdetails') {
			var targetUser = Users.get(target);
			if (!targetUser) {
				connection.send('|queryresponse|userdetails|'+JSON.stringify({
					userid: toId(target),
					rooms: false
				}));
				return false;
			}
			var roomList = {};
			for (var i in targetUser.roomCount) {
				if (i==='global') continue;
				var targetRoom = Rooms.get(i);
				if (!targetRoom || targetRoom.isPrivate) continue;
				var roomData = {};
				if (targetRoom.battle) {
					var battle = targetRoom.battle;
					roomData.p1 = battle.p1?' '+battle.p1:'';
					roomData.p2 = battle.p2?' '+battle.p2:'';
				}
				roomList[i] = roomData;
			}
			if (!targetUser.roomCount['global']) roomList = false;
			var userdetails = {
				userid: targetUser.userid,
				avatar: targetUser.avatar,
				rooms: roomList
			};
			if (user.can('ip', targetUser)) {
				var ips = Object.keys(targetUser.ips);
				if (ips.length === 1) {
					userdetails.ip = ips[0];
				} else {
					userdetails.ips = ips;
				}
			}
			connection.send('|queryresponse|userdetails|'+JSON.stringify(userdetails));
		} else if (cmd === 'roomlist') {
			connection.send('|queryresponse|roomlist|'+JSON.stringify({
				rooms: Rooms.global.getRoomList(true)
			}));
		}
	},

	trn: function(target, room, user, connection) {
		var commaIndex = target.indexOf(',');
		var targetName = target;
		var targetAuth = false;
		var targetToken = '';
		if (commaIndex >= 0) {
			targetName = target.substr(0,commaIndex);
			target = target.substr(commaIndex+1);
			commaIndex = target.indexOf(',');
			targetAuth = target;
			if (commaIndex >= 0) {
				targetAuth = !!parseInt(target.substr(0,commaIndex),10);
				targetToken = target.substr(commaIndex+1);
			}
		}
		user.rename(targetName, targetToken, targetAuth, connection.socket);
	},

};