Adds a button to generate raw text data from daily entries on Harvest.

harvest.js

/**
 * Adds a button to generate raw text data from daily entries on Harvest.
 */
(function () {
    
  var button = document.createElement('button'),
      nav = document.querySelector('#nav'),
      dayLinks = document.querySelectorAll('.js-harvest-current-view .day-view-week-nav a.js-day'),
      area;

  button.textContent = 'Raw';
  button.setAttribute('style',
    'background: transparent; color: #fff; cursor: pointer; float: right; font-weight: 600; height: 100%; margin-left: 10px; padding: 0 10px; position: relative;');
  button.addEventListener('click', onButtonClick);
  nav.insertBefore(button, nav.firstChild);

  for (var i = 0; i < dayLinks.length; i++) {
    dayLinks[i].addEventListener('click', setEntries);
  }

  function onButtonClick() {
    if (!area || area.hidden) {

      if (!area)
        createArea();

      setEntries();
      selectText(area);
      area.hidden = false;

    } else {
      area.hidden = true;
    }
  }

  function createArea() {
    area = document.createElement('div');
    area.contentEditable = true;
    area.setAttribute('style',
      'background: hsla(0, 0%, 100%, .8); border: 1px solid #ccc; margin: 10px; max-width: 30vw; left: 0; padding: 10px; position: fixed; top: 0;');
    document.body.appendChild(area);
  }

  function getEntries() {
    var notes = document.querySelectorAll('.js-harvest-current-view .notes p'),
        entries = [],
        row;
    
    for (var i = 0, len = notes.length; i < len; i++) {
      row = notes[i].innerHTML.split('<br>');

      for (var n = 0, l = row.length; n < l; n++) {
        entries.push(row[n]);
      }

    }
    
    return entries;
  }

  function setEntries() {
    if (area)
      area.innerHTML = getEntries().join('<br>');
  }

  function selectText(el) {
    var range, sel;

    range = document.createRange();
    range.selectNodeContents(el);

    sel = window.getSelection();
    sel.removeAllRanges();
    sel.addRange(range);
  }

})();