// ==UserScript==
// @name           Last.fm - Real Names
// @namespace      none
// @include        http://www.last.fm*
// @include        http://www.lastfm.*
// @include        http://cn.last.fm*
// ==/UserScript==

function trim(str) {
    return str.replace(/^\s+/, '').replace(/\s+$/, '');
}

function getRealName(nick, elem, sliceBy, addRealName) {
	GM_xmlhttpRequest({
		method: 'GET',
		url: 'http://ws.audioscrobbler.com/2.0/?method=user.getinfo&user='+nick+'&api_key=b25b959554ed76058ac220b7b2e0a026',
		headers: {
			'User-agent': 'Mozilla/4.0 (compatible) Greasemonkey/0.3',
			'Accept': 'text/xml'
		},
		onload: function(response) {
			if (!response.responseXML) {
				var xml = (new DOMParser()).parseFromString(response.responseText, 'text/xml');
			} else {
				var xml = response.responseXML;
			}
			var realName = xml.getElementsByTagName('realname')[0].firstChild.nodeValue;
			if (realName) {
				if (addRealName == true) {
					var newText = realName.slice(0,sliceBy)+' ('+nick+')';
				} else {
					var newText = realName.slice(0,sliceBy);
				}
				var replacedText = new RegExp(nick, 'gi');
				if (!elem.hasAttribute('realNameAdded')) {
					elem.innerHTML = elem.innerHTML.replace(replacedText, newText);
					elem.setAttribute('realNameAdded', true);
				}
			}
		}
	});
}

function changeName(topElem, sliceBy, addRealName) {
	var re = /^http:\/\/(.*\.|)(last\.fm|lastfm\.[^\/]+)\/user\/([^\?#]*)$/i;
	var elems = topElem.getElementsByTagName('a');
	for (var i = 0; i < elems.length; i++) {
		var elem = elems[i];
		if (!elem.hasAttribute('realNameAdded')) {
			if (m = re.exec(elem.href)) {
					parts = m[3].split('/');
					if (!parts[1]) {
					getRealName(parts[0], elem, sliceBy, addRealName);
				}
			}
		}
	}
}

var users = document.getElementById('users');
if (users) {
	var elems = users.getElementsByTagName('a');
	for (var i = 0; i < elems.length; i++) {
		var elem = elems[i];
		elem.setAttribute('realNameAdded', true);
	}
}

var memberList = document.getElementById('memberList');
if (memberList) {
	var elems = memberList.getElementsByTagName('a');
	for (var i = 0; i < elems.length; i++) {
		var elem = elems[i];
		elem.setAttribute('realNameAdded', true);
	}
}

var profileLinks = document.getElementById('profileLinks');
if (profileLinks)
	changeName(profileLinks, 26, false);
	
var aboutMe = document.getElementById('aboutMe');
if (aboutMe)
	changeName(aboutMe, 30, false);

var shoutList = document.getElementById('shoutList');
if (shoutList)
	changeName(shoutList, 40, true);

var recentDiscussions = document.getElementById('recentDiscussions');
if (recentDiscussions)
	changeName(recentDiscussions, 60, true);

changeName(document.body, 20, false);
document.addEventListener('DOMNodeInserted', function(ev){ changeName(ev.originalTarget, 15, true); }, true);

(function() {
var css = "#LastAd_TopRight, #LastAd_Top, #LastAd_Mid, #footer_ads, #cbsi_f_pop, #cbsi_f, .LastAd, .advert { display: none !important; } #footer_content, #footerLinks { margin: 0 !important; } .skylineRight { padding-right: 0 !important; margin-left: 0 !important; } .skyWrap { padding: 0 0 0 3px !important; } .forumComments .wrapper, .forumComments .date { width: 100% !important; }";
if (typeof GM_addStyle != "undefined") {
	GM_addStyle(css);
} else if (typeof PRO_addStyle != "undefined") {
	PRO_addStyle(css);
} else if (typeof addStyle != "undefined") {
	addStyle(css);
} else {
	var heads = document.getElementsByTagName("head");
	if (heads.length > 0) {
		var node = document.createElement("style");
		node.type = "text/css";
		node.appendChild(document.createTextNode(css));
		heads[0].appendChild(node); 
	}
}
})();