Categories State Helper for Hexo

hexo-helper-categories-state.js

/* global hexo */

/**
 * options {Object}
 * options.url {Function} hexo url_for
 * options.label {String} label
 */
hexo.extend.helper.register('categories_state', function(options){
  var pages = hexo.locals.get('pages');
  var categories = hexo.locals.get('categories');

  if (categories.length === 0) {
    return '';
  }

  var query = pages.find({ type: 'categories' });
  var hasCategoriesPage = query.count() > 0;
  var result = [
    '<div class="site-state-item site-state-categories">',
    '  <span class="site-state-item-count">' + categories.length + '</span>',
    '  <span class="site-state-item-name">' + options.label + '</span>',
    '</div>'
  ];
  if (hasCategoriesPage) {
    result.splice(1, 0, '<a href="' + options.url(query.first().path) + '">');
    result.splice(4, 0, '</a>');
  }
  return result.join('\n');
});