A bookmarklet to scrape YouTube timestamps from a Digital Pool tournament

digital-pool-timestamps.js

javascript: (() => {
  var match_rows = document.getElementsByClassName("streaming completed");
  var output = "";
  
  first_match_start = new Date(match_rows[0].childNodes[4].childNodes[0].textContent);
  
  for (const match_row of match_rows) {
    date_td = match_row.getElementsByTagName("td")[4];
    date = date_td.getElementsByTagName("div")[0].getHTML();
    match_start = new Date(date);
    match_offset = (match_start - first_match_start) / 1000;
        
    hours = Math.floor(match_offset / 3600);
    minutes = Math.floor((match_offset - (hours * 3600)) / 60);
    seconds = match_offset - (hours * 3600) - (minutes * 60);

    match_offset_string = hours.toString().padStart(2, '0') + ':' +
      minutes.toString().padStart(2, '0') + ':' +
      seconds.toString().padStart(2, '0');
      
    p1 = match_row.childNodes[1].childNodes[0].childNodes[0].childNodes[1].childNodes[0].textContent;
    p2 = match_row.childNodes[2].childNodes[0].childNodes[2].childNodes[0].textContent;
  
    output += `${match_offset_string} ${p1} vs ${p2}\n`;
  }
  navigator.clipboard.writeText(output);
  window.alert("timestamps copied");
})();