User:Xytram/watchlistnotifier.js

/* Watchlist notifier ([[User:Ais523/watchlistnotifier.js]]); displays a message every time a watched page changes. */
//<pre><nowiki>
 
var wmwpajax;
// From [[WP:US]] mainpage (wpajax renamed to wmwpajax)
wmwpajax={
        download:function(bundle) {
                // mandatory: bundle.url
                // optional:  bundle.onSuccess (xmlhttprequest, bundle)
                // optional:  bundle.onFailure (xmlhttprequest, bundle)
                // optional:  bundle.otherStuff OK too, passed to onSuccess and onFailure
 
                var x = window.XMLHttpRequest ? new XMLHttpRequest()
                : window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP")
                : false;
 
                if (x) {
                        x.onreadystatechange=function() {
                                x.readyState==4 && wmwpajax.downloadComplete(x,bundle);
                        };
                        x.open("GET",bundle.url,true);
                        x.send(null); 
                }
                return x;
        },
 
        downloadComplete:function(x,bundle) {
                x.status==200 && ( bundle.onSuccess && bundle.onSuccess(x,bundle) || true )
                || ( bundle.onFailure && bundle.onFailure(x,bundle) || alert(x.statusText+': '+bundle.url));
        }
};
 
// Example:
// function dlComplete(xmlreq, data) {
//      alert(data.message + xmlreq.responseText);
// }
//  wmwpajax.download({url:'http://en.wikipedia.org/w/index.php?title=Thresher&action=raw', 
//                   onSuccess: dlComplete, message: "Here's what we got:\n\n" });
 
// End of [[WP:US]] quote
 
function wmTimeDiff(i) {
var aMonth = new Array("NaN","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
var objDate = new Date;
 
// split input into date/time values
var iDate = i.split("T")[0];
var iTime = i.split("T")[1].split("Z")[0];
// split iDate into y/m/d values and convert month to text
var iYear  = parseInt(iDate.split("-")[0]);
var iMonth = aMonth[parseInt(iDate.split("-")[1])];
var iDay   = iDate.split("-")[2];
///document.getElementById("contentSub").innerHTML += iMonth+", "+iDay+" "+iYear+" "+iTime;
 
// get i timestamp using parsed values
var iCTime = Date.parse(iMonth+", "+iDay+" "+iYear+" "+iTime);
///document.getElementById("contentSub").innerHTML += ". iCTime: "+iCTime
 
// get current timestamp and offset with timezone
var cCTime = objDate.getTime();
var cOffse = objDate.getTimezoneOffset();
var cOTime = cCTime + (cOffse * 60000);
///document.getElementById("contentSub").innerHTML += " ~ "+cCTime+" ("+cOffse+") = "+cOTime;
 
// convert to seconds and calculate time difference
cOTime = (cOTime/1000);
iCTime = (iCTime/1000);
var timeDiff = (iCTime<cOTime ? Math.floor(cOTime-iCTime) : 1);
///document.getElementById("contentSub").innerHTML += " ~ "+timeDiff+"secs";
 
// hours
timeHr = (timeDiff>3600 ? Math.floor(timeDiff/3600) : 0);
timeDiff = timeDiff - (timeHr*3600);
timeDisp = (timeHr>0 ? timeHr+"h" : "");
// minutes & seconds
timeMin = (timeDiff>60 ? Math.floor(timeDiff/60) : 0);
timeSec = Math.floor(((timeDiff/60) - timeMin) * 60);
timeDisp += timeMin+'m'+timeSec+'s';
///document.getElementById("time").innerHTML += timeDisp;
 
///document.getElementById('contentSub').innerHTML+= "<div>i:"+i+", "+cOTime+" - "+iCTime+" = "+timeDiff+"</div>";
return timeDisp;
}
 
 
function wmWatchEditFound(xmlreq, data) {
  var watchrev, watchsum, watchrevold, watchpage, junk;
  if(xmlreq.responseText.indexOf('revid=')==-1)
  {
    document.getElementById('contentSub').innerHTML+=
      "<div class='watchlistnotify'>(<i>watchlistnotifier can't determine whether a "+
      "watched page has changed<i>)</div>";
    return;
  }
  watchrev=xmlreq.responseText.split('revid="')[1].split('"')[0];
  try
  {
    watchrevold=document.cookie.split('ais523wmwatchrev=')[1].split('.')[0];
  }
  catch(junk) {watchrevold=0;}
  if(wgPageName == "Special:Watchlist")
  {
    document.cookie="ais523wmwatchrev="+watchrev+".; path=/";
    var aas=document.getElementById('bodyContent').getElementsByTagName('a');
    var i=aas.length;
    while(i--)
    {
      if(aas[i].href.indexOf('diff=')!=-1&&watchrevold)
        if(+(aas[i].href.split('diff=')[1].split('&')[0])>watchrevold)
          aas[i].parentNode.style.fontWeight='bold';
    }
  }
  else
  {
    //timestamp   
    watchest=xmlreq.responseText.split('timestamp="')[1].split('"')[0];
    watchsec=wmTimeDiff(watchest);
    //user
    watchuser=xmlreq.responseText.split('user="')[1].split('"')[0];
    watchuser=watchuser.split('<').join('&lt;').split('>').join('&gt;');
    //title
    watchpage=xmlreq.responseText.split('title="')[1].split('"')[0];
    watchpage=watchpage.split('<').join('&lt;').split('>').join('&gt;');
    //comment
    if (xmlreq.responseText.search(/comment/i) > 0) {
     watchsum=xmlreq.responseText.split('comment="')[1].split('"')[0];
     watchsum=watchsum.split('<').join('&lt;').split('>').join('&gt;');
    } 
    else { watchsum="-no edit summary-"; }
    watchsumt = watchsum;
    watchsum = (watchsum.length>50 ? watchsum.substr(0,50)+"..." : watchsum);
    // minor/bot
    var watchflag = "";
    if (xmlreq.responseText.search(/minor/i) > 0) { watchflag += "m"; }
    if (xmlreq.responseText.search(/bot/i) > 0) { watchflag += "b"; }
 
    //create div
    var div = "";
    if (watchflag != "") { div = '[<b>'+watchflag+'</b>] '; }
    div += '<a href="/wiki/User:'+watchuser+'">'+watchuser+'</a> changed <a href="/wiki/'+watchpage+'">'+watchpage+'</a> "<span style="font-variant:italic" title="'+watchsumt+'">'+watchsum+'</span>" about '+watchsec+' ago.';
    //display div
    if(watchrev!=watchrevold)
      document.getElementById('contentSub').innerHTML += div+' (<a href=\"/wiki/Special:Watchlist\">watchlist</a>)</div>';
  }
}
 
addOnloadHook(function() {
  /* Find the top item in the watchlist, and its edit summary. We only need one item, so
     set the limit to 1 to ease the load on the server. */
    wmwpajax.download({url:'http://en.wikipedia.org/w/api.php?action=query&list=watchlist&wllimit=1&'+
      'wldir=older&format=xml&wlprop=flags|ids|user|title|comment|timestamp', onSuccess: wmWatchEditFound});
});
// </nowiki></pre>
// [[Category:Wikipedia scripts]]