Howto.md

In order to use this slash webtask, you must configure the following secrets in the webtask editor:

TWILIO_NUMBER - the "from" twilio number
TWILIO_SID, TWILIO_AUTH_TOKEN - your twilio credentials

wakeup.js

var numbers = {
  skynet: ['+14251234567','+15148836820'],
  gustav: ['+13036498063'],
  crew2: ['+16102423400', '+16083352365','+5491154760241','+5481161020204','+5491156130402']
};

var twilio = require('twilio');
var async = require('async');

module.exports = function (ctx, cb) {
  console.log('NEW REQUEST', ctx.body);
  
  // Parse command: {slack_username} {message_to_send}
  var tokens = ctx.body.text.match(/^\s*([^\s+]+)\s+(.+)$/);
  if (!tokens) return cb(null, { 
    response_type: 'in_channel', 
    text: 'Usage: /wt wakeup {name} {message}\nAllowed {name}s are:\n' + Object.keys(numbers).sort().join('\n') 
  });
  var user = tokens[1];
  var message = tokens[2];
  if (!numbers[user]) return cb(null, { 
    response_type: 'in_channel', 
    text: `Unknown name: ${user}.\nAllowed {name}s are:\n` + Object.keys(numbers).sort().join('\n') 
  });
  cb(null, { text: `Waking up ${user}...`, response_type: 'in_channel'});
  
  // Initialize Twilio client, use keys provided by webtask runtime in context
  var client = new twilio.RestClient(ctx.secrets.TWILIO_SID, ctx.secrets.TWILIO_AUTH_TOKEN);
  
  // Send SMS
  var response = [];
  async.each(numbers[user], (number, cb) => {
    client.messages.create({
      body: `From ${ctx.body.user_name}: ${message}`,
      to: number,
      from: ctx.secrets.TWILIO_NUMBER
    }, (err, message) => {
      response.push(err ? `${number}: ${err.message}` : `${number}: ${message.status || message.message}`);
      cb();
    });
  }, (e) => {
      // Confirm back on Slack
      require('superagent').post(ctx.body.response_url)
        .send({ text: response.join('\n'), response_type: 'in_channel' })
        .end();
  });
};