// ==UserScript==
// @name ffffoundtape.com: Add mp3 Link
// @include http://ffffoundtape.com/
// @include http://ffffoundtape.com/*
// ==/UserScript==

(function() {
	var ICON = '<img style="border: none; padding: 0 0 0 5px;" src="data:image/gif,GIF89a%0A%00%0A%00%B3%0F%00%F8Cj%D2%D2%D2%EA%EA%EA%F8%F8%F8%FFg%89%F9%F9%F9%FDFY%DC%0B8%FD%F5%F8%F0%27S%FE%90%A6%FBLs%FD%FD%FD%FEWz%F57%5E%FF%FF%FF!%F9%04%01%00%00%0F%00%2C%00%00%00%00%0A%00%0A%00%00%04%3A%104%E9%DCZ%EE9%C5%02%FB%8C%E2%24%1C%F0!%081*(%83%A6%C9%D6%CC%D7U%11%F8%DC%5C%09Y%0C%C0Aaq%F0%05%8E%81A%A3%A8(%08%9E%82%C2%B2%E80X%AD%87C%04%00%3B" >';

	setTimeout(function() {
		if (window.AutoPagerize) {
			window.AutoPagerize.addFilter(filter);
		}
	}, 0);

	addMp3Link(document);

	function filter(docs) {
		docs.forEach(addMp3Link);
	}

	function addMp3Link(doc) {
		Array.forEach(doc.getElementsByTagName('h3'), function(e) {
			var id = e.id.match(/track_name_(\d+)/)[1];
			
			GM_xmlhttpRequest({
				method : 'get',
				url : 'http://ffffoundtape.com/trackplaylist.php?i=' + id,
				onload : function(res) {
					var responseText = res.responseText;
					var xml = new XML(encodeEntities(responseText));
					var playlist = new Namespace(xml.name().uri)
					var url = xml.playlist::trackList.playlist::track.playlist::location;
					var a = document.createElement('a');

					a.href = url;
					a.innerHTML = ICON;
					e.appendChild(a);
				}
			});
		});
	}

	function encodeEntities(str) {
		return str
			.replace('&', '&amp;');
	}
})();