block4.javascript

app.post('/inbound', function(req, res) {
  let phone = req.body.from.number;
  let message = req.body.message.content;
  
  db.get('SELECT * FROM State WHERE (phone = $phone)', {
    $phone: phone
  }, function(error, userState) {
    
    switch(userState.state) {
      case states.getUsername:
        setUsername(phone, message.text);
        break;
      case states.getEmail:
        setEmail(phone, message.text, true);
        break;
      case states.getAddress:
        setAddress(phone, message.text, true);
        break;
      case states.confirmPayment:
        completeBuy(phone, message.text);
        break;
      default:
        parseIncoming(phone, message);
    }
    
  });
  
  res.status(204).end();  
});