// ==UserScript==
// @name Last.fm - Artist Taste-o-Meter
// @namespace http://no.name.space/
// @description Adds Taste-o-Meter to artist pages
// @include http://www.last.fm/music/*
// ==/UserScript==
// History
// 2007-06-24 : Created - gadgetchannel
//Regular Expression to strip XML declaration prior to new XML()
var xmlDeclaration = /^<\?xml version[^>]+?>/;
var SimilarArtists;
var artistname;
function xpath(query) {
return document.evaluate(query, document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
}
String.prototype.trim = function () {
return this.replace(/^\s*(\S*(\s+\S+)*)\s*$/, "$1");
};
String.prototype.endsWith = function(suffix) {
var startPos = this.length - suffix.length;
if (startPos < 0) {
return false;
}
return (this.lastIndexOf(suffix, startPos) == startPos);
};
function getMyArtists(username)
{
var charttype = 'overall';
getMyArtistsOverall(username);
}
function getMyArtistsOverall(username)
{
var charttype = 'overall';
GM_xmlhttpRequest({
method: 'GET',
url: 'http://ws.audioscrobbler.com/1.0/user/' + username + '/topartists.xml?type=' + charttype,
onload: function(responseDetails) {
var xml = new XML(responseDetails["responseText"].replace(xmlDeclaration, '').replace(/&/g,' '));
var OverallTOM = getTOMScore(eval('xml.artist'),SimilarArtists);
getMyArtistsSixMonth(username,OverallTOM);
}
});
}
function getMyArtistsSixMonth(username,OverallTOM)
{
var charttype = '6month';
GM_xmlhttpRequest({
method: 'GET',
url: 'http://ws.audioscrobbler.com/1.0/user/' + username + '/topartists.xml?type=' + charttype,
onload: function(responseDetails) {
var xml = new XML(responseDetails["responseText"].replace(xmlDeclaration, '').replace(/&/g,' '));
var SixMonthTOM = getTOMScore(eval('xml.artist'),SimilarArtists);
var MyTOM = (OverallTOM + SixMonthTOM) / 2;
OutputTOM(MyTOM);
}
});
}
function getTOMScore(my,sim)
{
var TOMScore = 0;
var Count = 0;
var main_artist = decodeURIComponent(artistname.replace(/\+/g,'%20'));
var SimCount = sim.length();
var MyCount = my.length();
var mainartistfound = false;
for(var i=0; i<SimCount; i++) {
Count = Count + 1;
var sim_artist = '';
var sim_rank = 100;
if (/http:\/\/.*?\/music\/([^?\/]+)/.test(sim[i].url)) {
sim_artist = decodeURIComponent(RegExp.$1);
sim_artist = sim_artist.replace(/\+/g,' ');
sim_artist = decodeURIComponent(sim_artist);
sim_rank = sim[i].match;
}
for(var j=0; j<my.length(); j++) {
var my_artist = '';
var my_rank = 100;
if (/http:\/\/.*?\/music\/([^?\/]+)/.test(my[j].url)) {
my_artist = decodeURIComponent(RegExp.$1);
my_artist = my_artist.replace(/\+/g,' ');
my_artist = decodeURIComponent(my_artist);
my_rank = (50 - my[j].rank) * 2;
}
if (my_artist == sim_artist)
{
var ThisScore = (100 - Math.abs(sim_rank - my_rank));
ThisScore = ThisScore * (SimCount / MyCount);
ThisScore = ThisScore / 100;
TOMScore = TOMScore + ThisScore;
}
if ((my_artist == main_artist) && (!mainartistfound))
{
var ThisScore = my_rank;
TOMScore = ThisScore
mainartistfound = true;
break;
}
}
if(mainartistfound)
{
break;
}
}
TOMScore = Math.min(TOMScore * 2, 100);
return TOMScore;
}
function OutputTOM(TOMScore)
{
var main_artist = decodeURIComponent(artistname.replace(/\+/g,'%20'));
var tomHTML = '<br/><div style="catContent"><div id="tasteOMeter" class="lastPanel"><div class="h">';
tomHTML = tomHTML + '<h2>Taste-o-meter</h2>';
tomHTML = tomHTML + '<a href="javascript:;" class="tog collapseTog" title="Collapse Panel" onclick="return collapseBox(\'tasteOMeter\', this);" onfocus="blur();"></a>';
tomHTML = tomHTML + '</div>';
tomHTML = tomHTML + '<div class="c collapsed">';
tomHTML = tomHTML + '<div id="tom_contents">';
tomHTML = tomHTML + '<p>Your musical compatibility rating with <strong>' + main_artist + '</strong> is:</p>';
var RatingText;
var RatingClass;
if(TOMScore >= 90)
{
RatingText = "Super";
RatingClass = "super";
}
if((TOMScore >= 70) && (TOMScore < 90))
{
RatingText = "Very High";
RatingClass = "veryhigh";
}
if((TOMScore >= 50) && (TOMScore < 70))
{
RatingText = "High";
RatingClass = "high";
}
if((TOMScore >= 30) && (TOMScore < 50))
{
RatingText = "Medium";
RatingClass = "medium";
}
if((TOMScore >= 10) && (TOMScore < 30))
{
RatingText = "Low";
RatingClass = "low";
}
if(TOMScore < 10)
{
RatingText = "Very Low";
RatingClass = "verylow";
}
tomHTML = tomHTML + '<div id="tomRating" class="' + RatingClass + '">';
tomHTML = tomHTML + '<div class="reading">' + RatingText + '</div>';
tomHTML = tomHTML + '<div class="graph"><div id="tomGraph" style="width:' + TOMScore + '%;"> </div></div>';
tomHTML = tomHTML + '</div>';
tomHTML = tomHTML + '</div>';
tomHTML = tomHTML + '</div>';
tomHTML = tomHTML + '<div class="f">';
tomHTML = tomHTML + '<span class="iesucks"> </span>';
tomHTML = tomHTML + '</div>';
tomHTML = tomHTML + '</div>';
tomHTML = tomHTML + '</div>';
var divs = xpath("//div[contains(@class, 'catRight')]");
var div = divs.snapshotItem(0).childNodes[0];
newdiv = document.createElement('div');
newdiv.innerHTML = tomHTML;
div.insertBefore(newdiv,div.childNodes[1]);
}
(function () {
var meLink = xpath("//a[@id='profileImage']");
if (meLink.snapshotLength < 1) { return; }
var whoAmI = meLink.snapshotItem(0).href.match(/user\/([^\/]*)\//)[1];
var username;
if (/http:\/\/.*?\/music\/([^?\/]+)/.test(location.href)) {
artistname = RegExp.$1;
}
if(!artistname) { return; }
if(!artistname) { return; }
GM_xmlhttpRequest({
method: 'GET',
url: 'http://ws.audioscrobbler.com/1.0/artist/' + artistname + '/similar.xml',
onload: function(responseDetails) {
var xml = new XML(responseDetails["responseText"].replace(xmlDeclaration, '').replace(/&/g,' '));
SimilarArtists = eval('xml.artist');
getMyArtists(whoAmI);
}
});
})();
