bodia-uz / booking-uz-polling

polling with notifications for -->

Polling with notifications for booking.uz.gov.ua

1. Open https://booking.uz.gov.ua in modern browser
2. Type search parameters and submit form
3. Copy next script and run in browser dev console:

const script = document.createElement("script");

script.type = "module";
script.textContent = `
  import {startPolling} from 'https://rawgit.com/bodia-uz/booking-uz-polling/master/index.js'
  
  startPolling();
`;

document.body.appendChild(script);

API

const stopPolling = startPolling({
  pollingIntervalMs: 3 * 60 * 1000,
  resultToString: result => JSON.stringify(result),
  onResult: (resultStr, result) => console.log(result),
  onResultChanged: (resultStr, result) => console.log(result)
});

// run `stopPolling()` to stop polling;

Telegram notifications

Add chat with @TrainKetsBot and follow instructions.

⚠️ WARN: TrainKetsBot is currently not working, so use manuall about how to create your own bot.

Or create your own bot:

1. Register in telegram
2. Create new bot using @BotFather command /newbot and get <token>
3. Write random text to your bot and extract <chat_id> from https://api.telegram.org/bot<token>/getUpdates response: <chat_id> = response->message->chat->id
4. Use onResultChanged function to notify via telegram:

const script = document.createElement("script");

script.type = "module";
script.textContent = `
  import {startPolling} from 'https://rawgit.com/bodia-uz/booking-uz-polling/master/index.js'
  
  startPolling({
    onResultChanged(results) {
      fetch('https://api.telegram.org/bot<token>/sendMessage?chat_id=<chat_id>&text=' + encodeURIComponent(results))
    }
  });
`;

document.body.appendChild(script);

Captcha

UZ introduced captche, so now we have one more restriction.

Workaround - send notification every time, captcha is shown. It will let you resolve it and continue search polling.

Code:

let wasCaptchaVisible;
function checkCaptcha() {
  const isCaptchaVisible = Array.from(
    document.querySelectorAll('iframe[title~=reCAPTCHA]'),
  ).some((frame) => window.getComputedStyle(frame).visibility === 'visible');

  if (isCaptchaVisible !== wasCaptchaVisible) {
    fetch(
      `https://api.telegram.org/bot<token>/sendMessage?chat_id=<chat_id>&text=${
        isCaptchaVisible ? 'Captcha is visible' : 'Captcha is hidden'
      }`,
    );
    console.log({ isCaptchaVisible, wasCaptchaVisible });
    wasCaptchaVisible = isCaptchaVisible;
  }
}

setInterval(checkCaptcha, 30 * 1000);
checkCaptcha();