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bassliner-alert.js

function executeAlarm() {
    // Create new audio context
    var audioContext = new (window.AudioContext || window.webkitAudioContext)();

    // Create OscillatorNode to represent the tone
    var oscillator = audioContext.createOscillator();

    // Define the type of wave the oscillator will output
    oscillator.type = 'square'; 

    // Define the frequency of the oscillator in hertz
    oscillator.frequency.value = 440; 

    // Connect the oscillator to the audio context's destination (the speakers)
    oscillator.connect(audioContext.destination);

    // Start the oscillator now
    oscillator.start();

    // Stop the oscillator after 1 second
    setTimeout(function(){
        oscillator.stop();
    }, 10000);
    
    document.title = 'ALERT !!!!'
}

async function fetchTours() {
  const WISHED_DATE = '2023-07-04';

  const token =
    'YOUR_JWT';

  const tours = await fetch(`https://bassliner.org/api/event/tours`, {
    method: 'POST',
    headers: {
      Authorization: `Bearer ${token}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      event_id: 110,
      tour_type_id: 2,
      meeting_point_id: 1,
    }),
  }).then((res) => res.json());

  const foundTour = tours
    .filter((tour) => tour.time.includes(WISHED_DATE))
    .find((tour) => tour.departures.find((dep) => dep.price_groups.length > 0));

  if (foundTour) {
    executeAlarm()
    return true;
  }
  return false;
}

function searchTours() {
  const interval = setInterval(async () => {
    const found = await fetchTours();
    if (found) {
      clearInterval(interval);
    }
  }, 1000 * 30);
}