helfi_proxy.module

<?php

/**
 * @file
 * Contains helfi_proxy.
 */

use Drupal\Core\Asset\AttachedAssetsInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\helfi_proxy\ProxyManagerInterface;

/**
 * Implements hook_module_implements_alter().
 */
function helfi_proxy_module_implements_alter(&$implementations, $hook) : void {
  // Move helfi_proxy_file_url_alter() implementation to the top of the
  // list, so this is always run first before any other alter hooks, more
  // specifically before 'crop_file_url_alter()' which seems to convert certain
  // responsive image styles to an external URL that will break our
  // implementation. @see UHF-7946.
  if ($hook === 'file_url_alter') {
    $group = $implementations['helfi_proxy'];
    $implementations = ['helfi_proxy' => $group] + $implementations;
  }
}

/**
 * Implements hook_file_url_alter().
 */
function helfi_proxy_file_url_alter(&$uri) : void {
  /** @var \Drupal\helfi_proxy\ProxyManagerInterface $service */
  $service = \Drupal::service('helfi_proxy.proxy_manager');
  $uri = $service->processPath($uri);
}

/**
 * Implements hook_js_settings_alter().
 */
function helfi_proxy_js_settings_alter(
  array &$settings,
  AttachedAssetsInterface $assets,
) {
  if (isset($settings['radioactivity'])) {
    /** @var \Drupal\helfi_proxy\ActiveSitePrefix $service */
    $service = \Drupal::service('helfi_proxy.active_prefix');

    if (!$prefix = $service->getPrefix()) {
      // Fallback to /en if site has no prefixes configured, like Etusivu
      // for example.
      $prefix = '/en';
    }
    $settings['radioactivity']['endpoint'] = sprintf('%s/radioactivity/emit', $prefix);
  }
}

/**
 * Implements hook_page_attachments_alter().
 */
function helfi_proxy_page_attachments_alter(array &$attachments) {
  // Set custom content type metatag on all content pages.
  if (empty($attachments['#attached']['html_head'])) {
    return;
  }

  $entities = array_filter(
    \Drupal::routeMatch()->getParameters()->all(),
    function ($param) {
      return $param instanceof EntityInterface;
    }
  );

  $entity = !empty($entities) ? reset($entities) : NULL;
  if ($entity) {
    $tags = [
      'helfi_content_type' => $entity->bundle(),
      'helfi_content_id' => $entity->id(),
    ];

    foreach ($tags as $tag_name => $content) {
      $tag = [
        '#tag' => 'meta',
        '#attributes' => [
          'name' => $tag_name,
          'content' => $content,
          'class' => 'elastic',
        ],
      ];

      $attachments['#attached']['html_head'][] = [$tag, $tag_name];
    }
  }
}

/**
 * Implements hook_simple_sitemap_links_alter().
 */
function helfi_proxy_simple_sitemap_links_alter(array &$links, $sitemap_variant) {
  /** @var \Drupal\Core\Config\ImmutableConfig $config */
  $config = \Drupal::service('config.factory')->get('helfi_proxy.settings');

  if (!$paths = implode("\n", $config->get(ProxyManagerInterface::ROBOTS_PATHS) ?? [])) {
    return;
  }

  try {
    /** @var \Drupal\helfi_api_base\Environment\Environment $environment */
    $environment = \Drupal::service('helfi_api_base.environment_resolver')->getActiveEnvironment();
  }
  catch (\InvalidArgumentException) {
    return;
  }

  /** @var \Drupal\Core\Path\PathMatcherInterface $pathMatcher */
  $pathMatcher = \Drupal::service('path.matcher');

  // helfi_proxy module sets "X-Robots-Tag: noindex" header for configured
  // paths. These url should not be included in the sitemap.xml file.
  foreach ($links as $key => $link) {
    try {
      $baseUrl = $environment->getUrl($link['langcode']);
    }
    catch (\InvalidArgumentException) {
      // Base url not found for given langcode.
      continue;
    }

    $url = $link['url'];

    if (str_starts_with($url, $baseUrl)) {
      $path = substr($url, strlen($baseUrl));

      // Remove matched paths from sitemap.xml file.
      if ($pathMatcher->matchPath($path, $paths)) {
        unset($links[$key]);
      }
    }
  }

}