unipa-subscription-checker.user.js

// ==UserScript==
// @name         Unipa Subscription Checker
// @version      1.0
// @description  Check Subscription
// @author       Francesco Cannizzaro
// @match        https://immaweb.unipa.it/immaweb/private/docenti/esami/iscrizioneLezioni.seam*
// @require      https://code.jquery.com/jquery-3.2.0.min.js
// @grant        GM_xmlhttpRequest
// ==/UserScript==

(function() {

  'use strict';

  var table = $("table[id*='iscrizioniEffettuateTable'] tbody").first();
  var array = $("tr:has(tr input[value=Visualizza])", table);
  var title = $("h1.heading-title");

  var makeForm = (list) => {
    var form = {};
    for (var i = 0; i < list.length; i++) {
      var ele = $(`input[name*=${list[i]}]`).first();
      form[ele.attr('name')] = ele.val();
    }
    return form;
  };

  var request = (tr, cb) => {

    var visualizza = $('input[value=Visualizza]', tr);

    if (visualizza.length > 0) {

      var form = makeForm(['ViewState', 'docenteRichiestoId', 'insegnamentoRichiestoIdText', 'creditiRichiestiIdText', 'codiceInsegnamentoIdText']);

      form[visualizza.attr('name')] = visualizza.val();

      for (var key in form) {
        if (key.indexOf(':') > 0) {
          var split = key.split(':')[0];
          form[split] = split;
          break;
        }
      }

      GM_xmlhttpRequest({
        method: "POST",
        url: "https://immaweb.unipa.it/immaweb/private/docenti/esami/iscrizioneLezioni.seam",
        data: $.param(form),
        headers: {
          'Content-Type': 'application/x-www-form-urlencoded'
        },
        onload: (response) => {
          cb();
          domParse(response.responseText, tr, visualizza);
        }
      });

      return;

    }

    cb();

  };

  var domParse = (body, tr, visualizza) => {

    var html = jQuery.parseHTML(body);
    var t = $("table[id*='materialeDidatticoList'] tbody", html);

    var titles = [];

    $("tr", t).each(function() {

      var key = $('td', this).first().text().trim();

      if (!localStorage.getItem(key)) {
        titles.push($("td:eq(1)", this).text());
      }

    });
  
    console.log(titles);
    
    if (titles.length > 0) {

      tr.remove();

      titles.forEach(title => {

        var p = $('<tr><td colspan=8><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAQAAABKfvVzAAAA5klEQVR4AaXUP0rGQBBA8VEQN4WCnXoOMd8FbERPZCEWdpJ8YG2h+A9S2GihrYVRksJLiOgBJGvgWYRAJiGZBN/UP1iWnZV/x4wNhGo2CRE9gp41vvFcEzLjBs8nq8PglHZRPwjYp6TdL7u4Ljgmw9NXQcqhBu9YZRo8ohME3b0G5yY4a4KA3ASvuBoscgcmgISFCsxhFIC4AvFoENVHShjTbX0kwfGG1QvLzWu9mHatwpMJHqY+jVyDI1IK+vrhmYPu83bsUdLOs8PSlAU6sVb0C88VIdtcUvDByjDQn8A6W4gBrPkDds8+0SQjqm4AAAAASUVORK5CYII="><span>' + title + '</span></td></tr>');
        
        $("img, span", p)
          .css('vertical-align', 'middle')
          .css('margin-right', '16px');

        $('td', p)
          .css('background', '#315572')
          .css('font-weight', 'bold')
          .css('cursor', 'pointer')
          .css('border-color', '#507a9b')
          .css('color', '#fff');

        p.click(() => {
          visualizza.click();
        });

        table.prepend(p);

      });

      table.prepend(tr);

    }

  };

  var original = title.text();

  var next = (i) => {
    if (i < array.length) {
      title.html(original + ' <small>' + $("td:eq(1)", array[i]).text() + '...</small>');
      request($(array[i]), () => {
        next(i + 1);
      });
    } else {
      title.html(original);
    }
  };

  next(0);

})();