pwa.module

<?php

/**
 * @file
 * PWA hooks.
 */

use Drupal\Core\Session\AccountInterface;
use Drupal\Core\Url;

/**
 * Implements hook_page_attachments().
 */
function pwa_page_attachments(array &$attachments) {
  if (!\Drupal::currentUser()->hasPermission('access content')) {
    return;
  }

  $attachments['#attached']['library'][] = 'pwa/serviceworker';

  $config = \Drupal::config('pwa.config');
  $cross_origin = $config->get('cross_origin');

  $manifest_link = [
    '#tag' => 'link',
    '#attributes' => [
      'rel' => 'manifest',
      'href' => Url::fromRoute('pwa.manifest')->toString(),
    ],
  ];

  // Pass credentials if the site is behind HTTP auth.
  if ($cross_origin) {
    $manifest_link['#attributes']['crossorigin'] = 'use-credentials';
  }

  $attachments['#attached']['html_head'][] = [$manifest_link, 'manifest'];

  $theme_color = [
    '#tag' => 'meta',
    '#attributes' => [
      'name' => 'theme-color',
      'content' => $config->get('theme_color'),
    ],
  ];
  $attachments['#attached']['html_head'][] = [$theme_color, 'theme_color'];

  /** @var callable */
  $getCacheVersionCallable = \Drupal::service('controller_resolver')
    ->getControllerFromDefinition(
      '\Drupal\pwa\Controller\PWAController::pwa_get_cache_version'
    );

  // Add cache version to drupal settings.
  $attachments['#attached']['drupalSettings']['pwa']['cache_version'] =
    \call_user_func($getCacheVersionCallable);

  $installPath = '/serviceworker-pwa';
  \Drupal::moduleHandler()->alter('pwa_install_path', $installPath);

  $attachments['#attached']['drupalSettings']['pwa']['installPath'] = $installPath;
  $scope = $config->get('scope');
  $attachments['#attached']['drupalSettings']['pwa']['scope'] = !empty($scope) ? $scope : NULL;
}

/**
 * Implements hook_theme().
 */
function pwa_theme() {
  return [
    'offline' => [
      'variables' => [],
    ],
  ];
}

/**
 * Check data from input.
 */
function pwa_str_to_list($string) {
  $list = $string ? explode("\n", $string) : [];
  $list = array_map('trim', $list);
  return array_filter($list, 'strlen');
}

/**
 * Implements hook_user_login().
 */
function pwa_user_login(AccountInterface $account) {
  \Drupal::service('session')->set('pwa_reset', TRUE);
}