CJS extension - Remember the Changelog

gistfile1.js

$(function () {
  $('.view-pull-request .js-new-comment-form').on('submit', function (e) {
    var text = $('.js-comment-container:first .js-comment-body').text().toLowerCase();
    if (text.indexOf('changelog') < 0) {
      e.preventDefault();
      alert('Please add a changelog!');
    }
  });
  
  if ($('.pull-request-tab-content')) {
    var html = $(
    '<div id="" class="">' +
      '<div class="js-ui-content columns"></div>' +
    '</div>');
  
    var currentUser = $('.header-nav-current-user strong').text();
  
    var added = 0;
    var deleted = 0;
    if ($('.text-diff-added').length) {
      var added = parseInt($('.text-diff-added').text().trim().substr(1).replace(/,/g, ''), 10);
      var deleted = parseInt($('.text-diff-deleted').text().trim().substr(1).replace(/,/g, ''), 10);
    }
    var lines = added + deleted;
    if (lines > 500) {
      var placeholder = '\n!!!!!!!!!!!!\nCareful you have submitted more than 500 lines: ' + lines + '\n!!!!!!!!!!!!';
      $('#new_comment_field').attr('placeholder', placeholder);
    }
    $('.js-ui-content', html).append('<div class="one-third column"><div class="flash"><strong>Changed lines:</strong> ' + lines + '</div><br/></div>')
  
    // NB Commits
    var commitsCount = $('.commit .author').filter(function () { return $(this).text() == currentUser}).length;
    $('.js-ui-content', html).append('<div class="one-third column"><div class="flash"><strong>' + currentUser + ' Commits:</strong> ' + commitsCount + '</div><br/></div>');
  
    // NB Comments
    var commentsCount = $('.timeline-comment').length;
    $('.js-ui-content', html).append('<div class="one-third column"><div class="flash"><strong>Comments:</strong> ' + commentsCount + '</div><br/></div>');
  
    // NB Assignments
    var assignementsCount = $('.discussion-item-assigned').length + $('.discussion-item-unassigned').length;
    $('.js-ui-content', html).append('<div class="one-third column"><div class="flash"><strong>Assignments:</strong> ' + assignementsCount + '</div><br/></div>');
  
    // Ratio Line/commits
    var ratioLineCommits = 0;
    if (lines && commitsCount) {
      ratioLineCommits = Math.round(lines / commitsCount);
    }
    $('.js-ui-content', html).append('<div class="one-third column"><div class="flash"><strong>Ratio Line/Commits:</strong> ' + ratioLineCommits + '</div><br/></div>');
  
    // Total Score
    var score = assignementsCount + commentsCount + commitsCount + lines;
    $('.js-ui-content', html).append('<div class="one-third column"><div class="flash"><strong>Score (Total):</strong> ' + score + '</div><br/></div>');
  
    // Show UI
    $('.timeline-new-comment').before(html);
  }
});