/*jshint unused:true */
// This is a modified version of [[User:Atelaes/TargetedTranslations.js]]

function clarifyTransTable() {

   function setStartVars() {
      targetedTranslationsCookie = ('localStorage' in window?localStorage.TargetedTranslations:getCookie('TargetedTranslations')) || '|';
      targetLanguages = targetedTranslationsCookie.split('|')[0].split(';');
      targetSubLanguages = targetedTranslationsCookie.split('|')[1].split(';');
      targetLanguagesParents = {};
      while(targetSubLanguages[0]) {
         (targetLanguagesParents[c = targetSubLanguages[0].split('/')[1]] = targetLanguagesParents[c] || []).push(targetSubLanguages.shift().split('/')[0]);
      }
   }

   setStartVars();

   var targetLanguages, targetSubLanguages, targetLanguagesParents, c, targetedTranslationsCookie,
      targetTrans, targetTransEmpty,
      tables = $('.translations').toArray(),
      lis, li, dls, dds,
      NavHead, temp;

   // For lis, check if language is targeted
   function isRight(node) {
      for (var l = 0, ll = targetLanguages.length, t = node.innerText||node.textContent; l < ll; l++) {
         if (t.indexOf(targetLanguages[l] + ':') === 0) {
            return true;
         }
      }
   }
   // For dds, check if sub-language is targeted
   function isRight2(node) {
      if (temp = targetLanguagesParents[(node.innerText||node.textContent).split(':')[0]]) {
         node = node.parentNode.parentNode; node = (node.innerText||node.textContent).split(':')[0];
         for (var l = 0; l < temp.length; l++) {
            if (temp[l] == node) {
               return true;
            }
         }
      }
   }

   for (var i = 0, tableslength = tables.length; i<tableslength; i++) {
      if (tables[i].className == 'translations') {
         addTargetedTranslationsButton(tables[i]);
         if(targetedTranslationsCookie != '|') {
            if(!targetTransEmpty){
               targetTrans = document.createElement('span');
               targetTransEmpty = true;
            }
            lis = tables[i].getElementsByTagName('li');
            for (var j=0, lislength=lis.length; j<lislength; j++) {
               dls = (li = lis[j]).getElementsByTagName('dl');
               //If we have subelements in the li....
               if (dls.length == 1) {
                  if (isRight(li) && li.childNodes[1].nodeName != 'DL') {
                     temp = document.createElement('span');
                     for (var k=0; k<li.childNodes.length; k++) {
                        if (li.childNodes[k].nodeName != 'DL') {
                           temp.appendChild(li.childNodes[k].cloneNode(true));
                        }
                     }
                     if (!targetTransEmpty) {
                        targetTrans.appendChild(document.createTextNode('; '));
                     }
                     targetTransEmpty = false;
                     targetTrans.appendChild(temp);
                  }
                  dds = dls[0].getElementsByTagName('dd');
                  for (var k=0; k < dds.length; k++) {
                     if (isRight2(dds[k])) {
                        temp = document.createElement('span');
                        temp.innerHTML = (dds[k].parentNode.parentNode.innerText||dds[k].parentNode.parentNode.textContent).split(':')[0] + ': ' + dds[k].innerHTML;
                        if (!targetTransEmpty) {
                           targetTrans.appendChild(document.createTextNode('; '));
                        }
                        targetTransEmpty = false;
                        targetTrans.appendChild(temp);
                     }
                  }
               } else if (isRight(li)) {
                  temp = document.createElement('span');
                  temp.innerHTML = li.innerHTML;
                  if (!targetTransEmpty) {
                     targetTrans.appendChild(document.createTextNode('; '));
                  }
                  targetTransEmpty = false;
                  targetTrans.appendChild(temp);
               }
            }
            if (!targetTransEmpty) {
               NavHead = $(tables[i].parentNode.parentNode).find('.NavHead')[0];
               NavHead.appendChild(document.createTextNode(' - '));
               NavHead.appendChild(targetTrans);
            }
         }
      }
   }


   function addTargetedTranslationsButton(node) {
      var button=node.parentNode.insertBefore(document.createElement('div'),node).appendChild(newNode('a',
           'Select targeted languages',
           {
               'style':'font-size:85%;',
               'href':'javascript:',
               'click':function(){
                  addtargetlangfavoriteicons(button.parentNode.nextSibling.getElementsByTagName('tr')[0].getElementsByTagName('li'));
                  for(var i=0;i++<4;){
                     button.parentNode.nextSibling.getElementsByTagName('ul')[i%2].style[i<3?'listStyleImage':'listStyleType'] = 'none';
                  }
                  button.parentNode.replaceChild(newNode('a','Save preferences',{'style':'font-size:85%;','href':'javascript:location.reload(true)'}),button);
              }
           }
        ));
   }

   function addtargetlangfavoriteicons(q) {
      function w(x,xx){
         x.insertBefore(newNode('a',{
            'class':'translationtargetstar',
            click:function(){selecttargetlangfavorite(x.firstChild,xx);}
         }),x.firstChild);
         if((xx && isRight2(x)) || ((!xx) && isRight(x))){
            x.firstChild.className += 'checked';
         }
      }
      for(var i=0;i<q.length;i++) {
         w(q[i]);
         for(var ii=0, xx=q[i].getElementsByTagName('dd');ii<xx.length;ii++){
            w(xx[ii],true);
         }
      }
   }

   function selecttargetlangfavorite(qq,xx) {
      if((xx && isRight2(qq.parentNode)) || ((!xx) && isRight(qq.parentNode))){
         temp = targetedTranslationsCookie;
         qq.className='translationtargetstar';
         if(!xx){ // rm li pref
            temp = (';'+temp.split('|')[0].replace(/;/g,';;')+';').replace(';'+(qq.parentNode.innerText||qq.parentNode.textContent).split(':')[0]+';','').replace(/;(?=;)|;$|^;/g,'') +'|'+temp.split('|')[1];
         } else{ // rm dd pref
            temp = temp.split('|')[0]+'|'+temp.split('|')[1].replace((qq.parentNode.parentNode.parentNode.innerText||qq.parentNode.parentNode.parentNode.textContent).split(':')[0]+'/'+(qq.parentNode.innerText||qq.parentNode.textContent).split(':')[0],'').replace(/;(?=;)|;$|^;/,'');
         }
      } else{
         temp = targetedTranslationsCookie;
         if(!xx){ // add li pref
            temp = temp.replace(/\|/,(temp.charAt(0) == '|'?'':';') + (qq.parentNode.innerText||qq.parentNode.textContent).split(':')[0] + '|');
         } else{ // add dd pref
            temp += (temp.split('|')[1]==''?'':';') + (qq.parentNode.parentNode.parentNode.innerText||qq.parentNode.parentNode.parentNode.textContent).split(':')[0]+'/'+(qq.parentNode.innerText||qq.parentNode.textContent).split(':')[0];
         }
         qq.className='translationtargetstarchecked';
      }
      if('localStorage' in window){
         localStorage.TargetedTranslations = temp;
      } else{
         setCookie('TargetedTranslations', temp);
      }
      setStartVars();
   }
}


mw.config.get( 'wgNamespaceNumber' ) || window.suppressTargetedTranslations || $( clarifyTransTable );