Using json as the payload for a button click for alana

json-postback.js

.dialog((session, response, stop) => {
  const expiresIn24Hours = new Date().setHours(new Date().getHours() + 24);
  response.createButtons()
    .text('Choose an option')
    .addButton('postback', 'Option 1', JSON.stringify({
      c: 'do-this', // c is for command
      s: 'current-state', // s is for state
      exp: expiresIn24Hours.getTime() / 1000,
    })
    .addButton('postback', 'Option 2', JSON.stringify({
      c: 'do-that',
      s: 'current-state',
      exp: expiresIn24Hours.getTime() / 1000,
    })
    .send()
})
.expect.button((session, response, stop) => {
  const payload = JSON.parse(session.message.payload);
  if (payload.exp <= newDate().getTime() / 1000) {
    response.sendText('It has been too long to click that button');
    response.startScript('help');
  }
  switch (payload.c) {
    case 'do-this':
      break;
    case 'do-that':
      break;
});