#google-classroom-members-maillist-extractor.js

/*
usefull in new study groups if your uniwersity email is based on "[email protected]" pattern, go to:
https://classroom.google.com/r/{ id of your classroom }/sort-last-name
inspect in devtools in browser one name of student, should be <span class="y4ihN YVvGBb">....
paste code it into console
*/
const CSS_SELECTOR_TARGET=prompt("insert css selector of all name fields", "span.y4ihN.YVvGBb");
const COLEDGE_MAIL_POSTFIX=prompt("insert students emails postfix", "@edu.your-colledge.pl");
console.log(
  Array.from(
    document.querySelectorAll(CSS_SELECTOR_TARGET)
  ).map(
    function(student){
      return student.innerHTML.toLowerCase().split(" ").join(".")+COLEDGE_MAIL_POSTFIX
    }
  )
  .join("\n")
  .replaceAll("ą", "a")
  .replaceAll("ę", "e")
  .replaceAll("ł", "l")
  .replaceAll("ż", "z")
  .replaceAll("ź", "z")
  .replaceAll("ś", "s")
  .replaceAll("ć", "c")
  .replaceAll("ń", "n")
  .replaceAll("ó", "o")
);
/*
list of mails with polish regional special characters replacement should be printed
*/