e-learning

userscript.js

console.log('E-Learning Boost Activated');

let initialized = false;

function getAnswerWindow() {
  let win = window;
  while (win.window.length > 0) {
    win = win.window[1];
  }
  return win;
}

window.setTimeout(() => {
  const win = getAnswerWindow();

  if (win.arrowKeyEvent || window !== win) return false;

  console.log('addEvent', win);

  win.addEventListener('keydown', (e) => {
    if (e.keyCode === 39) {
      e.preventDefault();
      const nextBtn = win.parent.window[0].document.querySelector('#next_btn');

      if (nextBtn) {
        return nextBtn.click()
      }

      const nextQuestion = win.document.querySelector('#btnnext a');

      if (nextQuestion) {
        return nextQuestion.click();
      }

      const disabledNextQuestion = win.document.querySelector('#btnnext > img');
      const submitResponses = win.document.querySelector('#btnsaiten a');

      if (disabledNextQuestion && submitResponses) {
        return submitResponses.click();
      }
    }
    win.arrowKeyEvent = true;
  });
}, 1000);

function checkAnswers(win) {
  if (!initialized) {
    win.document.querySelector('#btnnext').addEventListener('click', () => {
      window.setTimeout(() => {
        checkAnswers(win);
      }, 500);
    });
    initialized = true;
  }

  const isTrueFalse = win.document.querySelectorAll('[class^="choice-tf"]').length > 0;

  if (!isTrueFalse) {
    win.disp_correct_CR("disp");
  } else {
    win.disp_correct_TF("disp");
  }

  window.setTimeout(() => {
    if (isTrueFalse) {
      const image = win.document.querySelector('[class^="crct-tf"] img');
      const answer = parseInt(image.parentNode.className.match(/\d+/)[0], 0);
      win.q_choice(answer);
    } else {
      const images = [...win.document.querySelectorAll('td.crct-cr img')];

      if (images.length) {
        for (let i = 0; i < images.length; i++) {
          const event = new MouseEvent('click', {
            'view': window,
            'bubbles': true
          });

          const input = images[i].parentNode.parentNode.querySelector('input');

          if (!input.checked) {
            input.dispatchEvent(event);
          }
        }
      }
    }
  }, 100);
}

window.setTimeout(() => {
  let win = getAnswerWindow();

  if (!win || !win.hasOwnProperty('disp_correct_CR')) {
    return false;
  } else {
    console.log('Using window object: ', win);
  }

  if (win.document.getElementById('btnstart') !== null) {
    win.document.getElementById('btnstart').addEventListener('click', () => {
      window.setTimeout(() => {
        checkAnswers(win);
      }, 500);
    });
  } else {
    window.setTimeout(() => {
      checkAnswers(win);
    }, 500);
  }
}, 1000);