(function($){
 'use strict';
 if(window.fiLiveResultsBound)return;window.fiLiveResultsBound=true;
 var pending=new WeakMap();
 function anchor(root){
  var nodes=root.querySelectorAll('[data-live-result-row],.resultCard[data-read-comp]');
  for(var i=0;i<nodes.length;i++){var r=nodes[i].getBoundingClientRect();if(r.bottom>0 && r.top<innerHeight)return {key:nodes[i].dataset.liveResultRow,comp:nodes[i].dataset.readComp,top:r.top};}
  return null;
 }
 function restore(root,a){
  if(!a)return;
  var nodes=root.querySelectorAll('[data-live-result-row],.resultCard[data-read-comp]');
  for(var i=0;i<nodes.length;i++){if(a.key?nodes[i].dataset.liveResultRow===a.key:nodes[i].dataset.readComp===a.comp){var delta=nodes[i].getBoundingClientRect().top-a.top;if(Math.abs(delta)>1)window.scrollBy(0,delta);return;}}
 }
 function mergeCards(root,incoming){
  var list=root.querySelector('.resultsList'),fresh=incoming.querySelector('.resultsList');if(!list||!fresh)return;
  var old={};list.querySelectorAll('.resultCard[data-read-comp]').forEach(function(card){old[card.dataset.readComp]=card;});
  var cursor=list.firstElementChild,seen={};
  fresh.querySelectorAll('.resultCard[data-read-comp]').forEach(function(card){
   var id=card.dataset.readComp,current=old[id];seen[id]=true;
   if(!current){current=document.importNode(card,true);list.insertBefore(current,cursor);}
   else {
    var head=current.querySelector('.resultCard__head'),newHead=card.querySelector('.resultCard__head');
    if(head&&newHead&&head.innerHTML!==newHead.innerHTML)head.innerHTML=newHead.innerHTML;
    if(current!==cursor)list.insertBefore(current,cursor);
   }
   cursor=current.nextElementSibling;
  });
  Object.keys(old).forEach(function(id){if(!seen[id])old[id].remove();});
  if(window.fiInitResultReads)window.fiInitResultReads(list);
  var empty=root.querySelector('[data-live-empty]');if(empty && list.children.length)empty.remove();
 }
 function refresh(root,manual){
   if(pending.has(root)||root.contains(document.activeElement)&&document.activeElement.matches('input,select,textarea'))return;
   var url=root.dataset.liveUrl;
   if(['/teacher/feis_results.php','/organizer/TAB_feis_onfly.php'].indexOf(url)===-1)return;
   var button=root.querySelector('[data-live-refresh]'),status=root.querySelector('[data-live-refresh-status]'),ok=false;
   if(button)button.disabled=true;
   if(manual&&status)status.textContent=button.dataset.pending;
   var request=$.ajax({url:url,type:'GET',dataType:'html',cache:false,timeout:25000});pending.set(root,request);
   request.done(function(html){
    if(!root.isConnected)return;
    var doc=new DOMParser().parseFromString(html,'text/html'),incoming=doc.querySelector('[data-fi-live-results]');
    if(!incoming||incoming.dataset.liveEvent!==root.dataset.liveEvent||incoming.dataset.fiLiveResults!==root.dataset.fiLiveResults)return;
    ok=true;
    if(incoming.dataset.liveRevision===root.dataset.liveRevision)return;
    var a=anchor(root);
    if(root.dataset.fiLiveResults==='public')mergeCards(root,incoming);
    else root.replaceChildren.apply(root,Array.from(incoming.childNodes).map(function(n){return document.importNode(n,true);}));
    root.dataset.liveRevision=incoming.dataset.liveRevision;
    restore(root,a);
   }).always(function(){pending.delete(root);var currentButton=root.querySelector('[data-live-refresh]'),currentStatus=root.querySelector('[data-live-refresh-status]');if(currentButton)currentButton.disabled=false;if(manual&&currentStatus)currentStatus.textContent=ok?'':button.dataset.error;});
 }
 function tick(){if(document.hidden)return;document.querySelectorAll('[data-fi-live-results]').forEach(function(root){refresh(root,false);});}
 document.addEventListener('click',function(e){var button=e.target.closest('[data-live-refresh]');if(!button)return;e.preventDefault();refresh(button.closest('[data-fi-live-results]'),true);});
 window.setInterval(tick,30000);
})(jQuery);