Pluralsight video download

download.js

//1

var jq = document.createElement('script');
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(jq);

//2

jQuery.noConflict();

var counter = 1;
var courseTitle = jQuery("h1").first().text().trim().replace(/[^a-zA-Z0-9]/g, "_")
var lastVideoName = jQuery("li").last().find("h3").text().trim();
var lastVideoDuration = jQuery("li").last().find("div.duration").text().trim();
var lastModule = jQuery("h2").last().text().trim();
var lastVidToDl = false;
var nextVid = "";
var nextTitle = "";
var nextDuration = "";
var nextModule = "";
var dlSpeed = 150;
var minuteSizeInMB = 3;
var titlesArray = [];

(function(console){

console.save = function(data, filename){

if(!data) {
console.error('Console.save: No data')
return;
}

if(!filename) filename = 'console.json'

if(typeof data === "object"){
data = JSON.stringify(data, undefined, 4)
}

var blob = new Blob([data], {type: 'text/json'}),
e = document.createEvent('MouseEvents'),
a = document.createElement('a')

a.download = filename
a.href = window.URL.createObjectURL(blob)
a.dataset.downloadurl = ['text/json', a.download, a.href].join(':')
e.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null)
a.dispatchEvent(e)
}
})(console);

function dlVid()
{
var a = document.createElement('a');
a.href = jQuery("video").attr("src");
var currTitle = jQuery("ul.clips > li.selected").find("h3").text().trim();
var currMod = jQuery("header.active").find("h2").text().trim();
a.download = currTitle;

console.log(counter + " – " + currMod + " – " + currTitle);
titlesArray.push(counter + " – " + currMod + " – " + currTitle);
counter = counter + 1;

var minutes = parseInt(jQuery("span.total-time").text().trim().split(":")[0]) + 1;
var size = minutes * minuteSizeInMB * 1024 * 1024;
var timeNeeded = Math.ceil((size/(dlSpeed*1024)) * 1000);

console.log("Rounded duration: ", minutes, " minutes",
"\nEstimated size: ", size, " bytes",
"\nEstimated time needed: ", timeNeeded, " msec");

a.click();

jQuery("#next-control").click();

setTimeout(function(){jQuery("#play-control").click();}, 10000);

if(!lastVidToDl)
{
setTimeout(dlVid, timeNeeded);
nextVid = jQuery("ul.clips > li.selected").next();
nextTitle = nextVid.find("h3").text().trim();
nextDuration = nextVid.find("div.duration").text().trim();
nextModule = nextVid.parent().parent().find("h2").text().trim();

if(nextTitle == lastVideoName &&
nextDuration == lastVideoDuration &&
nextModule == lastModule)
{
lastVidToDl = true;
}
}
else
{
console.save(titlesArray, courseTitle+".json");
}
}

//3

dlSpeed=750;dlVid();