fasterweb-1.0.1/fasterweb.module

<?php

/**
 * @file
 * Drupal Module: FasterWeb.
 *
 * @author: David Jeyachandran <https://www.drupal.org/u/david-jeyachandran>
 */

/**
 * Implements hook_page_attachments().
 */
function fasterweb_page_attachments(array &$attachments) {
  if (\Drupal::currentUser()->isAnonymous()) {
    $attachments['#attached']['library'][] = 'fasterweb/fasterweb';
  }
}

/**
 * Implements hook_preprocess_html().
 */
function fasterweb_preprocess_html(&$variables, $hook) {
  $config = \Drupal::config('fasterweb.settings');

  // @todo check what's returned by get()
  $debug_mode = !$config->get('debug_mode') ? FALSE : TRUE;
  $variables['#attached']['drupalSettings']['fasterweb']['debug'] = $debug_mode;

  $variables['#attached']['drupalSettings']['fasterweb']['urls_exclude'] =
    _create_array(
      $config->get('urls_exclude'),
      ["*logout*", "/admin_menu*", "*admin/*"]
    );

  $variables['#attached']['drupalSettings']['fasterweb']['urls_include'] =
    _create_array($config->get('urls_include'));

  $variables['#attached']['drupalSettings']['fasterweb']['urls_do_not_prefetch'] =
    _create_array($config->get(
      'urls_do_not_prefetch'),
      ["*logout*", "*/node/*/edit", "*/node/add*"]
    );
}

/**
 * Creates an array combining two arrays - default values and the field values.
 */
function _create_array($field_value, $default_values = []) {
  $return_array = $default_values;

  // Convert field value into array.
  foreach (explode(PHP_EOL, $field_value) as $value) {
    if (!empty($value) and trim($value) != "") {
      $return_array[] = trim($value);
    }
  }

  return $return_array;
}