bitly_referred.user.js

// ==UserScript==
// @name           bit.ly referred
// @namespace      http://nanto.asablo.jp/blog/
// @include        http://*
// @require        http://svn.coderepos.org/share/lang/javascript/jsdeferred/trunk/jsdeferred.userscript.js
// ==/UserScript==

D = D();

const XHTML_NS = 'http://www.w3.org/1999/xhtml';

var site = null;
var entries = {};

D.
next(function () {
  registerClearCacheMenu();
  return GM_getValue('siteinfo', '') ||
    D.xhttp.get('http://wedata.net/databases/LDRize/items.json').
    next(function (res) {
      GM_setValue('siteinfo', res.responseText);
      return res.responseText;
    });
}).
next(function (siteInfoData) {
  var url = location.href;
  JSON.parse(siteInfoData).some(function (item) {
    if (new RegExp(item.data.domain).test(url)) {
      site = item.data;
      return true;
    }
    return false;
  });
  if (site) showClickCount();
}).
error(function (ex) {
  GM_log(ex);
});

function showClickCount() {
  var urls = [];
  $XA(site.paragraph).forEach(function (p) {
    var link = site.link ? $XA(site.link, p)[0] : p;
    if (!link || !link.href || link.href in entries) return;
    entries[link.href] = { paragraph: p, link: link };
    urls.push(link.href);
  });
  if (!urls.length) return;
  var param = urls.map(function(u) 'longUrl=' + encodeURIComponent(u)).join('&');
  D.xhttp.get(bitlyAPIURL('shorten', param)).
  next(function (res) {
    var results = JSON.parse(res.responseText).results;
    [i for (i in Iterator(results))].forEach(function ([url, item]) {
      D.xhttp.get(bitlyAPIURL('stats', 'hash=' + item.hash)).
      next(function (res) {
        var clicks = JSON.parse(res.responseText).results.clicks;
        var entry = entries[url];
        var range = document.createRange();
        range.selectNodeContents(entry.paragraph);
        var fragment = range.createContextualFragment(
          " " +
          <span xmlns={ XHTML_NS } class="bitly-clicked-count">
            { clicks } clicks
          </span>.toXMLString() +
          " "
        );
        entry.link.parentNode.insertBefore(fragment, entry.link.nextSibling);
      });
    });
  });
}

if (window.AutoPagerize) {
  addAutoPagerizeFilter();
} else {
  window.addEventListener('GM_AutoPagerizeLoaded', addAutoPagerizeFilter, false);
}

function addAutoPagerizeFilter() {
  window.AutoPagerize.addFilter(function () showClickCount());
}

function bitlyAPIURL(command, param) {
  if (!bitlyAPIURL.authParam) {
    var name = memo('bit.ly Login Name').trim();
    var key = memo('bit.ly API Key').trim();
    if (!name || !key) throw "Can't use bit.ly API";
    bitlyAPIURL.authParam = '&login=' + name + '&apiKey=' + key;
  }
  return 'http://api.bit.ly/' + command + '?version=2.0.1&' +
         param + bitlyAPIURL.authParam;
}

function registerClearCacheMenu() {
  GM_registerMenuCommand('bit.ly referred - Clear SITEINFO cache', function () {
    GM_setValue('siteinfo', '');
  });
}

function $XA(xpath, context) {
  var res = document.evaluate(xpath, context || document, null,
                              XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
  var nodes = [];
  for (var i = 0; i < res.snapshotLength; i++)
    nodes.push(res.snapshotItem(i));
  return nodes;
}

function memo(name) {
  var value = GM_getValue(name, null);
  if (value === null) {
    value = prompt(name);
    if (value !== null)
      GM_setValue(name, value);
  }
  return value;
}