kelas_fetcher.js

Notification.requestPermission();

function notifyMe(matkul, kelas) {
  if (Notification.permission !== "granted")
    Notification.requestPermission();
  else {
    var notification = new Notification(matkul + ' - ' + kelas + " Tersedia", {
      body: "Ayo cepet daftar!!!!",
    });
  }
}
async function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}
function htmlToElement(html) {
    var template = document.createElement('template');
    html = html.trim(); // Never return a text node of whitespace as the result
    template.innerHTML = html;
    return template.content.firstChild;
}
async function checkKelas(matkul, kelas) {
  urls = [
    "https://igracias.telkomuniversity.ac.id/libraries/ajax/ajax.reg.php?act=viewOfferedCourse&tk=3&pre=2&studentStartYear=1516&studyProgram=31&facultyId=7",
    "https://igracias.telkomuniversity.ac.id/libraries/ajax/ajax.reg.php?act=viewOfferedCourse&tk=2&pre=2&studentStartYear=1516&studyProgram=31&facultyId=7",
    "https://igracias.telkomuniversity.ac.id/libraries/ajax/ajax.reg.php?act=viewOfferedCourse&tk=4&pre=2&studentStartYear=1516&studyProgram=31&facultyId=7",
    "https://igracias.telkomuniversity.ac.id/libraries/ajax/ajax.reg.php?act=viewOfferedCourse&tk=1&pre=2&studentStartYear=1516&studyProgram=31&facultyId=7"

  ]
  for(let url of urls) {
    let kelasTable = await fetch(url, {
      "credentials": "include",
      "headers": {
        "accept": "*/*",
        "accept-language": "en-US,en;q=0.9,id-ID;q=0.8,id;q=0.7",
        "cache-control": "no-cache",
        "pragma": "no-cache",
        "x-firephp-version": "0.0.6",
        "x-requested-with": "XMLHttpRequest"
      },
      "referrer": "https://igracias.telkomuniversity.ac.id/registration/?pageid=761",
      "referrerPolicy": "no-referrer-when-downgrade",
      "body": null,
      "method": "GET",
      "mode": "cors"
    }).then((response) => { return response.text() } ).then((table) => { return table });
    $kelas = htmlToElement(kelasTable);
    $trs = $kelas.querySelectorAll('tr');
    for(let $tr of $trs) {
      if($tr.childNodes[1].textContent == matkul && $tr.childNodes[5].textContent == kelas && $tr.childNodes[6].textContent != "(Penuh)") {
        notifyMe(matkul, kelas);
      } 
    }
  }
}

async function startFetching(max) {
  let counter = 0;
  while(true) {
    await checkKelas("CSH3I3 - SISTEM INFORMASI", "IF-40-02");
    await sleep(30 * 1000) // Check tiap 30 detik
    if(counter > max)
      return
  }
}

startFetching(10000)