index.js

var Botkit = require('botkit')

var token = process.env.SLACK_TOKEN

var controller = Botkit.slackbot({
    // reconnect to Slack RTM when connection goes bad
    retry: Infinity,
    debug: false
})

// Assume single team mode if we have a SLACK_TOKEN
if (token) {
    console.log('Starting in single-team mode')
    controller.spawn({
        token: token
    }).startRTM(function (err, bot, payload) {
        if (err) {
            throw new Error(err)
        }

        console.log('Connected to Slack RTM')
    })
// Otherwise assume multi-team mode - setup beep boop resourcer connection
} else {
    console.log('Starting in Beep Boop multi-team mode')
    require('beepboop-botkit').start(controller, {debug: true})
}

controller.on('bot_channel_join', function (bot, message) {
    bot.reply(message, "I'm here!")
})

controller.hears('help', ['direct_message', 'direct_mention'], function (bot, message) {
    var help = 'I will respond to the following messages: \n' +
        '`bot hi` for a simple message.\n' +
        '`bot attachment` to see a Slack attachment message.\n' +
        '`@<your bot\'s name>` to demonstrate detecting a mention.\n' +
        '`bot help` to see this again.'
    bot.reply(message, help)
})

controller.hears(['attachment'], ['direct_message', 'direct_mention'], function (bot, message) {
    var text = 'Beep Beep Boop is a ridiculously simple hosting platform for your Slackbots.'
    var attachments = [{
        fallback: text,
        pretext: 'We bring bots to life. :sunglasses: :thumbsup:',
        title: 'Host, deploy and share your bot in seconds.',
        image_url: 'https://storage.googleapis.com/beepboophq/_assets/bot-1.22f6fb.png',
        title_link: 'https://beepboophq.com/',
        text: text,
        color: '#7CD197'
    }]

    bot.reply(message, {
        attachments: attachments
    }, function (err, resp) {
        console.log(err, resp)
    })
})

controller.hears(['roman'], ['direct_message', 'direct_mention', 'ambient'], function (bot, message) {
    bot.reply(message, 'Ja <@' + message.user + '> du hast recht, Roman ist wirklich ein Homo!')
})

controller.hears(['ritz'], ['direct_message', 'direct_mention', 'ambient'], function (bot, message) {
    bot.reply(message, 'Ja Ritz mag lange long johns :lips:')
})

controller.hears(['shakeit'], ['direct_message', 'direct_mention', 'ambient'], function (bot, message) {
    bot.reply(message, 'Niemand spricht über mich, sonst gibts instant roundhouse kick des Todes :muscle:')
})

/* Last */
controller.hears('.*', ['direct_message', 'direct_mention'], function (bot, message) {
    bot.reply(message, '<@' + message.user + '> du Depp - dafür gibts noch keinen Befehl. \n')
})