Endless Summer on Tumblr Dashboard

Endless_Summer_on_dsbd.user.js

// ==UserScript==
// @name           Endless Summer on dsbd
// @namespace      http://www.tumblr.com/
// @description    random next link on tumblr dashboard
// @include        http://www.tumblr.com/dashboard/1*
// @include        http://www.tumblr.com/show/*/1*
// @require        https://raw.github.com/gist/3242
// @require        https://raw.github.com/gist/198443
// @require        https://raw.github.com/gist/34615
// @version        0.0.4.0.4
// ==/UserScript==

// requires AutoPagerize http://userscripts.org/scripts/show/8551 by swdyh
// using $X() https://gist.github.com/3242 by os0x
// using createDocumentFromString https://gist.github.com/198443 by os0x
// using wedata utility for GM https://gist.github.com/34615 by youpy

// notice: put this script ABOVE AutoPagerize
// endlesSummeRize fire on http://www.tumblr.com/dashboard/1000 or http://www.tumblr.com/show/photos/by/everyone/1000 or ...

(function(){
var dsbd = 'http://www.tumblr.com/dashboard';
var DATABASE_URL = 'http://wedata.net/items/552.json';
var database = new Wedata.Database(DATABASE_URL);

var getId = function(info){
  var opt = {
    method: 'GET',
    url: dsbd,
    headers : {
    },
    onload: function(res) {
      var i = $X(info.nextLink, createDocumentFromString(res.responseText));
      if(i.length){
        i = i[0]; 
      }else{
        return;
      }
      var cacheInfo = {
        postNo  : i.href.match(/.*\/\d+\/(\d+)/)[1],
        nextLink  : info.nextLink
      };
      GM_setValue('cacheInfo', JSON.stringify(cacheInfo));  
    }
  };
  GM_xmlhttpRequest(opt);
};

var endlessSummer = function(doc, url, info){
  var cacheInfo = JSON.parse(GM_getValue('cacheInfo'));
  if (!cacheInfo){
    return;
  }
  var a = $X(cacheInfo.nextLink, doc);
  if (a.length) {
		a = a[0];
	}else{
    return;
	}
  a.href = location.pathname.replace(/(\/[^\/]+\/\d+)(\/\d+)/,'$1') + '?offset=' + Math.floor(Math.random() * cacheInfo.postNo);
  a.textContent = 'Searching for The Endless Summer \u2192 ';
  a.style.background='none repeat scroll 0 0 #4AADF0';
};

GM_registerMenuCommand('endless summer - clear cache', function() {
  GM_setValue('cacheInfo', '');
  database.clearCache();
});

database.get(function(items) {
  getId(items.data);
});
endlessSummer(document, '', '');

setTimeout(function(){
  if (window.AutoPagerize && window.AutoPagerize.addDocumentFilter){
    window.AutoPagerize.addDocumentFilter(endlessSummer);
  }
},0);
})();