// ==UserScript==
// @name           Last.fm Musical Compatibility in Percents [Hans]
// @namespace      by hans the best aka /user/imblyign/
// @description    Shows the percentage of your musical compatibility with any user next to the visual bar.
// @include        http://www.last.fm/user/*
// @run-at         document-end
// @require        http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.js
// @require        http://cdnjs.cloudflare.com/ajax/libs/json2/20110223/json2.js
// @require        https://raw.github.com/andris9/jStorage/master/jstorage.js
 
// ==/UserScript==
$(document).ready(function() {
    if( document.URL !== 'http://www.last.fm' + $('#idBadgerUser').attr('href')){
        function getElementsByClass(searchClass, domNode, tagName) {
        if (domNode == null) domNode = document;
        if (tagName == null) tagName = '*';
        var el = new Array();
        var tags = domNode.getElementsByTagName(tagName);
        var tcl = " "+searchClass+" ";
        for(i=0,j=0; i<tags.length; i++) {
        var test = " " + tags[i].className + " ";
        if (test.indexOf(tcl) != -1)
        el[j++] = tags[i];
        }
        return el;
        }
       
        var name = document.URL;
        var name_arr = name.split('/user/');
        name = name_arr[1];
       
        var me = $(".user-badge").attr('href');
        var me_arr = me.split('/user/');
        me = me_arr[1];
       
        var req_url = "http://ws.audioscrobbler.com/2.0/?method=tasteometer.compare&type1=user&type2=user&value1=" + me + "&value2=" + name + "&api_key=8945dcb97999365968b9feaad4828f7e&format=json";
       
        GM_xmlhttpRequest({
          method: "GET",
          url: req_url,
          onload: function(response) {
            var json = response.responseText,
                obj = JSON && JSON.parse(json) || $.parseJSON(json);
            var c = (obj['comparison']['result']['score'] * 100).toFixed(3);
            if(c > 0){
           
                var o = getElementsByClass("reading");
                o[0].innerHTML = o[0].innerHTML + " - " + c + "%";
             
                console.log('added percentage');
           
            }else{
                var o = getElementsByClass("reading");
                o[0].innerHTML = o[0].innerHTML + " - no percentage found";
            }
          }
        });
    }else{
        console.log('not added percentage');
    }
});