Cowsay test bot for MatterMost outgoing webhook

cowsay9k.js

// https://docs.mattermost.com/developer/webhooks-outgoing.html
var express = require('express');
var cowsay = require('cowsay');
var bodyparser = require('body-parser');
var app = express();

app.use(bodyparser.urlencoded({ extended: true }));

app.get('/', function (req, res) {
    res.end('<pre>'+ cowsay.say({text: 'Moo'}) + '</pre>');
});

app.post('/cowbot', function (req, res) {
  if (req.body.token === process.env.MATTERMOST_TOKEN) {
    var text = req.body.text.replace(new RegExp('^' + req.body.trigger_word + '\ '), '');
    return res.json({
      username: 'cowbot9000',
      text: '```\n' + cowsay.say({text: text || 'wat?'}) + '\n```'
    });
  }
  res.json(['who are you?']);
});

require('greenlock-express').create({
  server: 'staging', //'https://acme-v01.api.letsencrypt.org/directory'
  email: 'you@urdomain.tld',
  agreeTos: true,
  approveDomains: [ 'urdomain.tld' ],
  app: app
}).listen(80, 443);