Auto archive old threads that have not unreaded emails

gmailAutoarchive .gs

/*
Este script mantiene limpia mi bandeja de entrada, archivando correos antiguos
*/
function gmailAutoArchive() {
  gmailAutoarchiveHelper("Informes",3);
  gmailAutoarchiveHelper("Sistemas",3);
  gmailAutoarchiveHelper("Diseños",3);
  gmailAutoarchiveHelper("inbox",7);

}

function gmailAutoarchiveHelper(queryStr, numDays) {
  Logger.log('Running archiver on label %s for numDays: %s',queryStr, numDays);
  
  var query = "label:"+ queryStr + " AND label:inbox AND -is:starred AND older_than:"  + numDays +"d";
  var threads = GmailApp.search(query,0, 250).filter(function(thread) {
    // Only return if the thread does not have any unread messages.
    return (!thread.isUnread());
    // return (thread.isInInbox() && !thread.isUnread() && !thread.isImportant());
  });

  if(threads.length!=0){
    Logger.log('Found %s email threads belonging to %s to be archived', threads.length, queryStr);
    while (threads.length) {
      var this_batch_size = Math.min(threads.length, 250);
      var this_batch = threads.splice(0, this_batch_size);
      GmailApp.moveThreadsToArchive(this_batch);
    }
  }
}