grb.js

(function(w,d,$){
"use strict";

  if (typeof $ == 'undefined'){
		alert('no jquery');
		return;
	}

	//d.body.appendChild(d.createElement('script')).src='http://cdnjs.cloudflare.com/ajax/libs/lodash.js/1.0.0-rc.3/lodash.js';
	req("http://cdnjs.cloudflare.com/ajax/libs/lodash.js/1.0.0-rc.3/lodash.js", function(){
		$(grab);
	});

	req("http://eligrey.com/demos/FileSaver.js/FileSaver.js");

	var partIdx = -1;
	var pageUrlBase = 'http://pluralsight.com/training/Player?'; //window.location.protocol + "//" + window.location.host + '/training/Player?';
	
	var title = d.title;
	var storageKey = '___pages: ' + title;
	
	var parts = localStorage.getItem(storageKey);
	if (parts){
		parts = JSON.parse(parts);
		console.log('local parts retrived');
	} else {
		parts = [];
	}

	var moduleTitles = [];
	
	function grab(){
		$('.clipTitle a[onclick*="Launch"]').each(function(){
			partIdx++;
			var link = $(this);
			var url = pageUrlBase + /Player\(\'([^\']+)\'\)/g.exec(link.attr('onclick'))[1];
			var ex = _.where(parts, {url: url})[0];
			if (ex)
				return;
			var moduleTitle = $.trim( link.closest('.tocClips').prevAll('.module:first').find('.title').text() );
			if (!_.contains(moduleTitles, moduleTitle))
				moduleTitles.push(moduleTitle);
			parts.push({
				index: partIdx,
				title: link.text(),
				moduleTitle: moduleTitle,
				moduleIdx: moduleTitles.length,
				url: url,
				saved: false
			});
		});
		
		//bak();
		parts = parts.slice(0, 1);
		partIdx = -1;
		nextPage();
	}
	

	w.___onpage = function(res){
		debugger;
		var p = parts[partIdx];
		p.pHtml = res;
		bak();
		nextPage();
	}

	function nextPage(){
		partIdx++;
		if (partIdx === parts.length){
			console.log('all pages done: ' + partIdx);
			partIdx = -1;
			nextVideo();
			return;
		}
		
		var p = parts[partIdx];
		
		//$.ajax(p.url).done(___onpage);
		debugger;
		var iframe = $('<iframe />')
			.attr({
				src: p.url
			})
			.on({
				load: function(e){
					debugger;
					iframe.remove();
				}
			})
			.appendTo('body');
	}
		
	function bak(){
		localStorage.setItem(storageKey, JSON.stringify(parts));
	}
	
	function req(src, cb){
		var s = d.createElement('script');
		s.onload = cb;
		d.body.appendChild(s).src=src;
	}
	
	function nextVideo(){
		partIdx++;
		if (partIdx === parts.length){
			console.log('all videos done: ' + partIdx);
			partIdx = -1;
			nextVideo();
			return;
		}
	}
	
})(window,document,window.jQuery)