Polito Video Clipboard

README.md

English

This addon lets you copy entire courses from PoliTO's website to your clipboard. You can then paste the content to JDownloader 2 to download each and every desired video. To install this script, download Greasemonkey or Tampermonkey (depending on your browser), then, click here and follow the GUI. Once installed, you can browse any video-lesson and copy the entire course in a single click.

Italiano

Questo script permette di copiare nella clipboard interi corsi dal sito del PoliTO. Una volta copiati, possono essere incollati nel LinkGrabber di JDownloader 2 per scaricare tutti i video. Per installare questo script, scarica Greasemonkey o Tampermonkey (a seconda del tuo browser), poi, click here e segui la GUI. Una volta installato, puoi andare su qualunque video-lezione per copiare l'intero corso in un click.

Warning

This script has only been tested with Greasemonkey for Firefox.

politovideoclipboard.user.js

// ==UserScript==
// @name          Polito Video Clipboard
// @version       3
// @author        Marco Montanari (happyzleaf)
// @namespace     https://happyzleaf.com/
// @description   Copies all the video urls from the selected course. Makes downloading entire courses easier with JDownloader 2.
// @include       https://didattica.polito.it/portal/pls/portal/*
// @grant         GM.xmlHttpRequest
// @grant         GM.setClipboard
// ==/UserScript==

var box = document.getElementsByClassName("video-js-box")[0];
// The script does not support BigBlueBox players yet, therefore they're exluded here.
if (box == null) {
  //box = document.getElementsByClassName("col-md-8")[0];
  return;
}

function findVideo(data) {
  var match = data.match(/https:\/\/video\.polito\.it\/dl\/.*\.mp4/gi);
  return match.length > 0 ? match[0] : null;
}

var clipboardText = document.createElement("span");
clipboardText.textContent = "Clipboard: ";

var copyButton = document.createElement("button");
copyButton.innerHTML = "Copy video";
copyButton.onclick = function() {
  GM.setClipboard(findVideo(document.documentElement.innerHTML));
}

var videoRegex = /href="(sviluppo\.(videolezioni.vis|pagina_corso.main|virtual_classroom.vis).*)">/gi;

var copyAllButton = document.createElement("button");
copyAllButton.innerHTML = "Copy all videos";
copyAllButton.onclick = function() {
  loadingAllText.textContent = "Loading...";

  // Adapted from https://github.com/lucaceriani
  var baseUrl = "https://didattica.polito.it/portal/pls/portal/";

  var matches, lessons = [];
  while (matches = videoRegex.exec(document.documentElement.innerHTML)) {
      lessons.push(matches[1].replace(new RegExp("&", 'g'), "&"));
  }

  if (lessons.length == 0) {
    loadingAllText.textContent = "Error!";
    return;
  }

  var count = 0;
  var total = lessons.length;
  var clipboard = "";

  function updateStatus() {
    if (count == total) {
      loadingAllText.textContent = "Copied!";
      GM.setClipboard(clipboard);
    } else {
      loadingAllText.textContent = "Loading... " + count + "/" + total;
    }
  }

  lessons.forEach(function(item, index) {
    GM.xmlHttpRequest({
      method: "GET",
      url: baseUrl + item,
      onload: function(res) {
        // Little hack cause for some reasons findVideo(res.responseText) with a BigBlueButton lesson blocks everything.
        // Needs further investigation
        if (res.responseText.includes("https://virtualclassroom24.polito.it/")) {
          total--;
        } else {
          count++;
          clipboard += findVideo(res.responseText) + "\n";
        }
        updateStatus();
      },
      onerror: function() {
        total--;
        updateStatus();
      },
      ontimeout: function() {
        total--;
        updateStatus();
      }
    });
  });
}

var loadingAllText = document.createElement("span");

var div = document.createElement("div");
div.appendChild(clipboardText);
div.appendChild(copyButton);
div.appendChild(copyAllButton);
div.appendChild(loadingAllText);
div.appendChild(document.createElement("br"));

box.insertBefore(div, box.firstChild);