// ==UserScript==
// @name Last.fm Automatically Updating Recently Listened Tracks
// @author Andrew Wilkinson <andrew@indiegigs.co.uk>
// @namespace http://lastfm.indiegigs.co.uk/
// @version 0.3.1
// @description Updates the recently listened tracks every 60 seconds
// @include http://www.last.fm/user/*
// @include http://beta.last.fm/user/*
// @include http://www.lastfm.*/user/*
// ==/UserScript==
var timeout;
var username;
//Regular Expression to strip XML declaration prior to new XML()
var xmlDeclaration = /^<\?xml version[^>]+?>/;
String.prototype.trim = function () {
return this.replace(/^\s*(\S*(\s+\S+)*)\s*$/, "$1");
};
String.prototype.startsWith = function(prefix) {
if (this.length < prefix.length) {
return false;
}
return (this.substring(0, prefix.length) == prefix);
};
String.prototype.endsWith = function(suffix) {
var startPos = this.length - suffix.length;
if (startPos < 0) {
return false;
}
return (this.lastIndexOf(suffix, startPos) == startPos);
};
function xpath(query, doc) {
return doc.evaluate(query, doc, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
}
function getServer() {
path = window.location.href;
slash = path.substr(7).indexOf("/");
return path.substr(0, slash+8);
}
function getPageMajorType(server) {
path = window.location.href;
serverlen = server.length;
return path.substr(serverlen, path.substr(serverlen, path.length).indexOf("/"));
}
function getUserName(server, majortype) {
path = window.location.href;
fullpath = server + majortype + "/";
fullpathsize = fullpath.length;
if(path.substr(0, fullpathsize) != fullpath) {
return null;
}
if(path.substr(fullpathsize, path.length).indexOf("/") == -1) {
return path.substr(fullpathsize);
} else {
return path.substr(fullpathsize, path.substr(fullpathsize, path.length).indexOf("/"));
}
}
function getPageType(server, majortype, username) {
path = window.location.href;
fullpath = server + majortype + "/";
size = (fullpath + username).length + 1;
nextslash = window.location.href.substr(size).indexOf("/");
nextampersand = window.location.href.substr(size).indexOf("&");
nextquestion = window.location.href.substr(size).indexOf("?");
if(fullpath + username == window.location.href
|| fullpath + username + "/" == window.location.href
|| (nextquestion != -1 && fullpath + username == window.location.href.substr(0, size+nextquestion))
|| (nextquestion != -1 && fullpath + username + "/" == window.location.href.substr(0, size+nextquestion))) {
return "front";
} else {
return "other";
}
}
function createRecentlyListenedTracks() {
var page = xpath("//div[@id=\"LastContent3\"]", document).snapshotItem(0);
page.innerHTML = "<div id=\"recenttracks\" class=\"chartWithQuilttwoBox \"><h3><a href=\"/user/"+username+"charts/?charttype=recenttracks\">Recently Listened Tracks</a></h3>" +
"<div class=\"chartWithQuilt chartWithQuilttwo\">" +
"<div class=\"imgQuilt imgQuilttwo\" id=\"quilt\"></div>" +
"<div class=\"chartWithQuiltChart\">" +
"<table class=\"recentList\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" width=\"100%\">" +
"<tbody></tbody></table></div></div>" +
"<div class=\"chartmore\">" +
"<a href=\"/user/"+username+"/charts/?charttype=recenttracks\">See more…</a>" +
"<span class=\"li\"><a class=\"feed\" href=\"http://ws.audioscrobbler.com/1.0/user/"+username+"/recenttracks.rss\" title=\"RSS Feed for "+username+"’s Recent Tracks\"><span>Feed</span></a></span>" +
"</p>" +
"</div>" + page.innerHTML;
}
function getFuzzyTime(timestamp) {
var now = new Date().getTime()/1000.0;
var diff = now - timestamp;
if(diff < 60) {
return "just listened";
} else if(diff < 3600) {
return Math.floor(diff/60) + " minutes ago";
} else if(diff < 24 * 3600) {
hours = Math.floor(diff / 3600);
minutes = Math.floor((diff - hours*3600) / 60);
return hours + "h and " + minutes + "m ago";
} else {
days = Math.floor(diff / (24 * 3600));
hours = Math.floor((diff - days*(24 * 3600))/3600);
minutes = Math.floor((diff - days*(24 * 3600) - hours*3600) / 60);
return days + "d, " + hours + "h and " + minutes + "m ago";
}
}
function updateTracks() {
GM_xmlhttpRequest({
method: 'GET',
url: "http://ws.audioscrobbler.com/1.0/user/" + username + "/recenttracks.xml",
onload: function(responseDetails) {
var xml = new XML(responseDetails["responseText"].replace(xmlDeclaration, ''));
doUpdateTracks(xml);
}
});
}
function doUpdateTracks(chart) {
var table = xpath("//table[contains(@class, 'recentList')]//tbody", document).snapshotItem(0);
if(!table) {
createRecentlyListenedTracks();
table = xpath("//table[contains(@class, 'recentList')]//tbody", document).snapshotItem(0);
if(!table) {
// Still failed so give up.
return;
}
}
tablerows = table.rows.length;
chartrows = chart.track.length();
if(tablerows < chartrows) {
for(i = 0; i < (chartrows-tablerows); i++) {
var row = table.insertRow(0);
var track = row.insertCell(0);
var time = row.insertCell(1);
track.setAttribute("class", "subject");
time.setAttribute("class", "date");
}
} else if(tablerows > chartrows) {
for(i = 0; i < (tablerows-chartrows); i++) {
table.deleteRow(0);
}
}
if(chartrows == 0) {
var row = table.insertRow(0);
var track = row.insertCell(0);
var time = row.insertCell(1);
track.innerHTML = username + " has not scrobbled any tracks recently.";
track.setAttribute("class", "subject");
time.setAttribute("class", "date");
}
for(i = 0; i < chartrows; i++) {
artisturl = chart.track[i].url.split("/");
artisturl = artisturl.slice(0, -2);
artisturl = artisturl.join("/");
table.rows[i].cells[0].innerHTML = "<a href=\"" + artisturl + "\">" + chart.track[i].artist + "</a> – <a href=\"" + chart.track[i].url + "\">" + chart.track[i].name + "</a>";
// Warning: EVIL HACK AHEAD!
// Why can't we access the uts parameter here?
var date = chart.track[i].date.split(" ");
var day = parseInt(date[0]);
var month = 0;
if(date[1].startsWith("Jan")) { month = 0; }
else if(date[1].startsWith("Feb")) { month = 1; }
else if(date[1].startsWith("Mar")) { month = 2; }
else if(date[1].startsWith("Apr")) { month = 3; }
else if(date[1].startsWith("May")) { month = 4; }
else if(date[1].startsWith("Jun")) { month = 5; }
else if(date[1].startsWith("Jul")) { month = 6; }
else if(date[1].startsWith("Aug")) { month = 7; }
else if(date[1].startsWith("Sep")) { month = 8; }
else if(date[1].startsWith("Oct")) { month = 9; }
else if(date[1].startsWith("Nov")) { month = 10; }
else if(date[1].startsWith("Dec")) { month = 11; }
var year = parseInt(date[2].substr(0, 4));
var hour;
var minute;
if(date[3].endsWith("am") && parseInt(date[3].split(":")[0]) == 12) {
var hour = 0;
var minute = parseInt(date[3].split(":")[1].substr(0, 2));
} else if((date[3].endsWith("am") && parseInt(date[3].split(":")[0]) != 12)
|| (date[3].endsWith("pm") && parseInt(date[3].split(":")[0]) == 12)) {
var hour = parseInt(date[3].split(":")[0]);
var minute = parseInt(date[3].split(":")[1].substr(0, 2));
} else {
var hour = parseInt(date[3].split(":")[0]) + 12;
var minute = parseInt(date[3].split(":")[1].substr(0, 2));
}
table.rows[i].cells[1].innerHTML = getFuzzyTime(new Date(Date.UTC(year, month, day, hour, minute)).getTime() / 1000.0);
}
updateTimer();
}
function updateTimer() {
var element;
var info = xpath("//div[contains(@id, 'recenttracks')]//div[contains(@class, 'chartmore')]", document).snapshotItem(0);
if(info) {
len = info.childNodes.length;
for(i = info.childNodes.length - 1; i >= 0; i--) {
if(info.childNodes[i].nodeName == "SPAN" && info.childNodes[i].textContent.startsWith("Updating")) {
element = info.childNodes[i];
break;
}
}
if(!element) {
element = document.createElement('span');
element.setAttribute("class", "li");
info.appendChild(element);
}
}
timeout = timeout - 5;
if(timeout > 0) {
if(element) { element.innerHTML = "Updating in " + timeout + " seconds..."; }
setTimeout(updateTimer, 5000);
} else {
timeout = 60;
if(element) { element.innerHTML = "Updating..."; }
updateTracks();
}
}
(function() {
server = getServer();
username = getUserName(server, getPageMajorType(server));
if(getPageType(server, getPageMajorType(server), username) != "front") {
return;
}
timeout = 60;
updateTracks();
})();
