From bca5b63c710f124677e93a4118ce6b6c68ddcada Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Tue, 12 Jun 2012 00:48:44 +0200
Subject: [PATCH] bitlove-enclosures.js

---
 content/static/script/bitlove-enclosures.js | 117 ++++++++++++++++++++
 xsl/header.xsl                              |   3 +
 2 files changed, 120 insertions(+)
 create mode 100644 content/static/script/bitlove-enclosures.js

diff --git a/content/static/script/bitlove-enclosures.js b/content/static/script/bitlove-enclosures.js
new file mode 100644
index 000000000..28c5f07fe
--- /dev/null
+++ b/content/static/script/bitlove-enclosures.js
@@ -0,0 +1,117 @@
+var XHR = window.AnonXMLHttpRequest || window.XMLHttpRequest;
+if (!XHR)
+    throw new Error("Your browser lacks support for standardized AJAX calls. What the ...?");
+
+
+var urlCallbacks = {};
+
+function resolve(url, cb) {
+    if (urlCallbacks.hasOwnProperty(url)) {
+	urlCallbacks[url].push(cb);
+    } else {
+	urlCallbacks[url] = [cb];
+    }
+
+    maySetTimeout();
+}
+
+var timeout;
+function maySetTimeout() {
+    var pending = Object.keys(urlCallbacks).length > 0;
+
+    if (!timeout && pending) {
+	timeout = setTimeout(function() {
+	    timeout = undefined;
+	    maySend();
+	}, 50);
+    } else if (timeout && !pending) {
+	clearTimeout(timeout);
+    }
+}
+
+function maySend() {
+    var urls = Object.keys(urlCallbacks).slice(0, 8);
+    if (urls.length > 0) {
+	doSend(urls, function(response) {
+	    /* Dispatch to callbacks */
+	    urls.forEach(function(url) {
+		var urlResponse = response[url];
+		var cbs = urlCallbacks[url];
+		delete urlCallbacks[url];
+		cbs.forEach(function(cb) {
+		    try {
+			cb(urlResponse);
+		    } catch(e) {
+			if (console && console.error)
+			    console.error(e && e.stack || e);
+		    }
+		});
+	    });
+	});
+    }
+}
+
+function doSend(urls, cb) {
+    var q = urls.map(function(url) {
+	return "url=" + encodeURIComponent(url);
+    }).join("&");
+
+    var cl = new XHR();
+    cl.open('GET', 'http://api.bitlove.org/by-enclosure.json?' + q);
+    cl.onreadystatechange = function() {
+	if (this.readyState == this.DONE) {
+	    var response;
+	    if (this.status == 200 &&
+		this.responseText) {
+		try {
+		    response = JSON.parse(this.responseText);
+		} catch (e) {
+		    if (console && console.error)
+			console.error(e && e.stack || e);
+		}
+	    }
+	    cb(response);
+
+	    /* Continue with next batch: */
+	    maySend();
+	}
+    };
+    cl.send();
+}
+
+
+$(document).ready(function() {
+    /* For C3D2-Web */
+    $('a[rel="enclosure"]').each(function() {
+	var a = $(this);
+	var prevLi = a.parent();
+	var url = a.attr('href');
+
+	if (/\.torrent$/.test(url))
+	    return;
+
+	resolve(url, function(info) {
+	    var torrent = info && info.sources && info.sources[0] && info.sources[0].torrent;
+	    if (info && torrent) {
+		var li = $('<li><a type="application/x-bittorrent" class="mime">Torrent</a>: <span class="s"></span><span class="l"></span><span class="d"></span></li>');
+		li.find('a').attr('href', torrent);
+		li.find('.s').text(info.seeders + " Seeder, ");
+		li.find('.l').text(info.leechers + " Leecher");
+		if (info.downloaded == 1) {
+		    li.find('.d').text(", 1 Download");
+		} else if (info.downloaded > 1) {
+		    li.find('.d').text(", " + info.downloaded + " Downloads");
+		}
+
+		var link = info.sources[0].permalink;
+		if (link) {
+		    var source = $('<span> on <a>Bitlove</a></span>');
+		    source.find('a').attr('href', link);
+		    li.append(source);
+		}
+
+		prevLi.after(li);
+	    }
+	});
+    });
+});
diff --git a/xsl/header.xsl b/xsl/header.xsl
index 6be5126e9..ed247306d 100644
--- a/xsl/header.xsl
+++ b/xsl/header.xsl
@@ -58,6 +58,9 @@
   <xsl:call-template name="make-script-tag">
     <xsl:with-param name="name" select="'play-resources'"/>
   </xsl:call-template>
+  <xsl:call-template name="make-script-tag">
+    <xsl:with-param name="name" select="'bitlove-enclosures'"/>
+  </xsl:call-template>
   
   </xsl:template>