luis_example_bot.js

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 This is a sample Slack bot built with Botkit.

 This bot demonstrates many of the core features of Botkit:

 * Connect to Slack using the real time API
 * Receive messages based on "spoken" patterns
 * Send a message with attachments
 * Send a message via direct message (instead of in a public channel)

 # RUN THE BOT:

 Get a Bot token from Slack:

 -> http://my.slack.com/services/new/bot

 Run your bot from the command line:

 token=<MY TOKEN> serviceUri=<LUIS_SERVICE_URI>node demo_bot.js

 # USE THE BOT:

 Find your bot inside Slack to send it a direct message.

 Say: "Hello"

 The bot will reply "Hello!"

 Make sure to invite your bot into other channels using /invite @<my bot>!

 # EXTEND THE BOT:

 Botkit has many features for building cool and useful bots!

 Read all about it here:

 -> http://howdy.ai/botkit

 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

var Botkit = require('./lib/Botkit.js');
var luis = require('./lib/luis-middleware.js');

if (!process.env.token) {
    console.log('Error: Specify token in environment');
    process.exit(1);
}

if (!process.env.serviceUri) {
    console.log('Error: Specify Luis service uri');
    process.exit(1);
}

var luisOptions = {serviceUri: process.env.serviceUri};

var controller = Botkit.slackbot({
    debug: false
});

controller.spawn({
    token: process.env.token
}).startRTM(function(err) {
    if (err) {
        throw new Error(err);
    }
});

controller.middleware.receive.use(luis.middleware.receive(luisOptions));

controller.hears(['hello','hi'],['direct_message','direct_mention','mention'], luis.middleware.hereIntent, function(bot,message) {
    bot.reply(message,"Hello.");
});