gistfile1.txt

var SlackBot = require('slackbots');
var todos = {} // object to hold the users lits

var userList = [];

var commands = {
	echo: function(data){
		return bot.postMessage(data.channel, data.payload, params)
	},
	add: function(data){
		if(!todos[data.channel]) todos[data.channel] = [];

		todos[data.channel].push(data.payload);
		var message = "Added *" + data.payload + "* to your list";
		return bot.postMessage(data.channel, message, params);
	},
	show: function(data){
		if(!todos[data.channel]) bot.postMessage(data.channel, '*Empyt*', params)
		var message = '';
		todos[data.channel].forEach(function(value, i){
			message += i + ': '+ value + '\n';
		});
		return bot.postMessage(data.channel, message, params);
	},
	help: function(data, message){
		var message = message || '';
		message += 'usage `@todo: [command] [payload]`\n'
		Object.keys(this).forEach(function(value, i){
			message += i + ': '+ value + '\n';
		});
		return bot.postMessage(data.channel, message, params);
	}
}

// create a bot 
var token = 'xoxb-21818585331-9rq3yEmJmu1T3WNuvP15lzFn'; // hide me somewhere!
var bot = new SlackBot({
	token: token, // Add a bot https://my.slack.com/services/new/bot and put the token  
	name: 'Todo'
});
var params = {
	icon_emoji: ':page_with_curl:'
};

bot.on('start', function() {
	bot.postMessageToUser('wmantly', 'list time!', params);
	userList = bot.getUsers()._value.members
	userList.search = function( key, value ){
		for ( var index = 0; index < this.length; ++index ) {
			if( this[index][key] === value ){
				return this[index];
			}
		}
		return -1;
	};

});

bot.on('message', function(data) {

	// !data.subtype prevents message loop
	if( !data.subtype && data.text ){
		if(data.text.match(/^<@U0E3MNZTP>:/) || data.channel.match(/^D/)){
			// parse the user id, command and payload out of the user's message
			var parsed = data.text.replace('<@U0E3MNZTP>:', '').trim();
			data.parsed = /(.\w+)\s?(.*)$/i.exec(parsed);
			data.command = data.parsed[1];
			data.payload = data.parsed[2];

			if(commands.hasOwnProperty(data.command)){
				commands[data.command](data);
			}else{
				commands['help'](data, '*Command not found.*\n');
			}
		}
	}
});