public function PWAController::pwa_serviceworker_file_data in Progressive Web App 8

Same name and namespace in other branches

2.x src/Controller/PWAController.php \Drupal\pwa\Controller\PWAController::pwa_serviceworker_file_data()

Replace the serviceworker file with variables from Drupal config.

Parameters

\Symfony\Component\HttpFoundation\Request $request: The current request object.

Return value

mixed

1 string reference to 'PWAController::pwa_serviceworker_file_data'

pwa.routing.yml in ./pwa.routing.yml: pwa.routing.yml

File

src/Controller/PWAController.php, line 172: Replace values in serviceworker.js

Class

PWAController: Default controller for the pwa module.

Namespace

Drupal\pwa\Controller

Code

public function pwa_serviceworker_file_data(Request $request) {
  $path = drupal_get_path('module', 'pwa');
  $sw = file_get_contents($path . '/js/serviceworker.js');

  // Get module configuration.
  $config = \Drupal::config('pwa.config');

  // Get URLs from config.
  $cacheUrls = pwa_str_to_list($config
    ->get('urls_to_cache'));
  $cacheUrls[] = $config
    ->get('offline_page');
  $exclude_cache_url = pwa_str_to_list($config
    ->get('urls_to_exclude'));

  // Initialize a CacheableMetadata object.
  $cacheable_metadata = new CacheableMetadata();
  $cacheable_metadata
    ->addCacheableDependency($config);
  $cacheable_metadata
    ->setCacheMaxAge(86400)
    ->setCacheContexts([
    'url',
  ]);

  // Get icons list and convert into array of sources.
  $manifest = Json::decode($this->manifest
    ->getOutput());
  $cacheIcons = [];
  if (!empty($manifest['icons'])) {
    foreach ($manifest['icons'] as $icon) {
      $cacheIcons[] = $icon['src'];
    }
  }

  // Combine URLs from admin UI with manifest icons.
  $cacheWhitelist = array_merge($cacheUrls, $cacheIcons);

  // Allow other modules to alter the URL's. Also pass the CacheableMetadata
  // object so these modules can add cacheability metadata to the response.
  $this->moduleHandler
    ->alter('pwa_cache_urls', $cacheWhitelist, $cacheable_metadata);
  $this->moduleHandler
    ->alter('pwa_exclude_urls', $exclude_cache_url, $cacheable_metadata);

  // Active languages on the site.
  $languages = \Drupal::languageManager()
    ->getLanguages();

  // Get the skip-waiting setting.
  $skip_waiting = $config
    ->get('skip_waiting') ? 'true' : 'false';

  // Set up placeholders.
  $replace = [
    '[/*cacheUrls*/]' => Json::encode($cacheWhitelist),
    '[/*activeLanguages*/]' => Json::encode(array_keys($languages)),
    '[/*exclude_cache_url*/]' => Json::encode($exclude_cache_url),
    "'/offline'/*offlinePage*/" => "'" . $config
      ->get('offline_page') . "'",
    '[/*modulePath*/]' => '/' . drupal_get_path('module', 'pwa'),
    '1/*cacheVersion*/' => '\'' . $this
      ->pwa_get_cache_version() . '\'',
    'false/*pwaSkipWaiting*/' => $skip_waiting,
  ];
  if (!empty($cacheUrls)) {
    $replace['[/*cacheUrlsAssets*/]'] = Json::encode($this
      ->_pwa_fetch_offline_page_resources($cacheUrls));
  }
  $this->moduleHandler
    ->alter('pwa_replace_placeholders', $replace);

  // Fill placeholders and return final file.
  $data = str_replace(array_keys($replace), array_values($replace), $sw);
  $response = new CacheableResponse($data, 200, [
    'Content-Type' => 'application/javascript',
    'Service-Worker-Allowed' => '/',
  ]);
  $response
    ->addCacheableDependency($cacheable_metadata);
  return $response;
}

You are here