receive-call-webhook-failover.js

'use strict';

const app = require('express')();
const bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));

const server = app.listen(process.env.PORT || 4001, () => {
  console.log('Express server listening on port %d in %s mode', server.address().port, app.settings.env);
});

app.get('/answer', (req, res) => {
  const from = req.query.from;

  const ncco = [
    {
      'action': 'connect',
      'timeout': 5,
      'from': from,
      'eventType': 'synchronous',
      'endpoint': [
        {
          'type': 'sip',
          'uri': 'sip:12065551212@sip.example.com',
        },
      ],
    },
  ];

  res.json(ncco);
});

app.post('/event', (req, res) => {
  console.log(req.body);
  const fallbackEvents=['timeout','failed','unanswered','busy','rejected'];
  if (fallbackEvents.indexOf(req.body.status)>-1) {
    const ncco = [
      {
        'action': 'connect',
        'timeout': 60,
        'from': req.body.from,
        'eventType': 'synchronous',
        'endpoint': [
          {
            'type': 'phone',
            'number': '+12065551212',
          },
        ],
      },
    ];
    res.json(ncco);
  }
  else {res.status(204).end();}
});