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1<?php
2
3declare(strict_types=1);
4
5namespace Drupal\display_builder\Hook;
6
7use Drupal\Core\Hook\Attribute\Hook;
8use Drupal\Core\State\StateInterface;
9
10/**
11 * Hook implementations for display_builder.
12 */
13class LibrariesSwitcher {
14
15  private const STATE_STORAGE_KEY = 'display_builder.asset_libraries_local';
16
17  public function __construct(
18    protected StateInterface $state,
19  ) {}
20
21  /**
22   * Switch libraries according to environment.
23   *
24   * @param array $libraries
25   *   An associative array of libraries, passed by reference. The array key
26   *   for any particular library will be the name from *.libraries.yml.
27   * @param string $extension
28   *   Can either be 'core' or the machine name of the extension that registered
29   *   the libraries.
30   */
31  #[Hook('library_info_alter')]
32  public function switchLibraries(array &$libraries, string $extension): void {
33    if ($extension !== 'display_builder') {
34      return;
35    }
36
37    // By default, libraries are retrieved from CDN. Switch to local mode with
38    // a state value.
39    // This is needed for tests or disconnected environments.
40    $is_local = $this->state->get(self::STATE_STORAGE_KEY, FALSE);
41
42    if (!$is_local) {
43      return;
44    }
45
46    if (isset($libraries['shoelace']['dependencies'])) {
47      $libraries['shoelace']['dependencies'] = \array_filter(
48        $libraries['shoelace']['dependencies'],
49        static fn ($dependency) => $dependency !== 'display_builder/_shoelace_cdn'
50      );
51      $libraries['shoelace']['dependencies'][] = 'display_builder/_shoelace_local';
52    }
53
54    if (isset($libraries['htmx_sse']['dependencies'])) {
55      $libraries['htmx_sse']['dependencies'] = \array_filter(
56        $libraries['htmx_sse']['dependencies'],
57        static fn ($dependency) => $dependency !== 'display_builder/_htmx_sse_cdn'
58      );
59      $libraries['htmx_sse']['dependencies'][] = 'display_builder/_htmx_sse_local';
60    }
61  }
62
63}