index.js

'use strict';

const express = require('express');
const https = require('https');
const send = require('./fb/send');
const msg = require('./fb/assemble');

let app = express();
app.set('port', process.env.PORT || 5000);

app.get('/webhook', function(req, res) {
  if (req.query['hub.mode'] === 'subscribe' &&
      req.query['hub.verify_token'] === process.env.VALIDATION_TOKEN) {
    console.log("Validating webhook");
    res.status(200).send(req.query['hub.challenge']);

  } else {
    console.error("Failed validation. Make sure the validation tokens match.");
    res.sendStatus(403);
  }
});

app.post('/webhook', function (req, res) {
  // var data = req.body;
  console.log('***webhook data***', req);


  /* Ideal State of affairs:
     let handleMessage = receive(data).then((event) => { return handleMsgPromise(event) });
     handleMessage().then((stuff) => { send(stuff).to(user)});
  */

  // Make sure this is a page subscription
  // if (data.object == 'page') {
  //   // Iterate over each entry
  //   // There may be multiple if batched
  //   data.entry.forEach(function(pageEntry) {
  //     var pageID = pageEntry.id;
  //     var timeOfEvent = pageEntry.time;
  //
  //     // Iterate over each messaging event
  //     pageEntry.messaging.forEach(function(messagingEvent) {
  //       const senderID = messagingEvent.sender.id;
  //       send(msg.text('i got u fam')).to(senderID);
  //     });
  //
  //   });
  //
  //   // Assume all went well.
  //   //
  //   // You must send back a 200, within 20 seconds, to let us know you've
  //   // successfully received the callback. Otherwise, the request will time out.
  //   res.sendStatus(200);
  // }
});

app.listen(app.get('port'), function() {
  console.log('Node app is running on port', app.get('port'));
});