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1<?php
2
3declare(strict_types=1);
4
5namespace Drupal\display_builder_page_layout;
6
7use Drupal\block\BlockRepositoryInterface;
8use Drupal\Core\Block\BlockPluginInterface;
9use Drupal\Core\Config\ConfigFactoryInterface;
10use Drupal\Core\Theme\ThemeInitializationInterface;
11use Drupal\Core\Theme\ThemeManagerInterface;
12
13/**
14 * Convert data between page regions and Display Builder.
15 */
16class BuilderDataConverter {
17
18  public function __construct(
19    private BlockRepositoryInterface $blockRepository,
20    private ThemeManagerInterface $themeManager,
21    private ThemeInitializationInterface $themeInitialization,
22    private ConfigFactoryInterface $configFactory,
23  ) {}
24
25  /**
26   * Convert page regions to UI Patterns sources.
27   *
28   * @return array
29   *   A single UI Patterns source data.
30   */
31  public function convertPage(): array {
32    $sources = [
33      'source_id' => 'page_layout',
34      'source' => [
35        'regions' => [],
36      ],
37    ];
38
39    // Current theme is probably the admin one, so let's switch to the front
40    // one before retrieving the blocks.
41    $current_theme = $this->themeManager->getActiveTheme();
42    $theme_name = $this->configFactory->get('system.theme')->get('default');
43    $theme = $this->themeInitialization->getActiveThemeByName($theme_name);
44    $this->themeManager->setActiveTheme($theme);
45
46    foreach ($this->blockRepository->getVisibleBlocksPerRegion() as $region => $blocks) {
47      foreach ($blocks as $block) {
48        $source = $this->convertBlock($block->getPlugin());
49
50        // Remove config related to the block config entity and keep only the
51        // properties from the plugin itself.
52        if ($block_id = $source['source']['plugin_id'] ?? NULL) {
53          unset(
54            $source['source'][$block_id]['id'],
55            $source['source'][$block_id]['label'],
56            $source['source'][$block_id]['label_display'],
57            $source['source'][$block_id]['provider'],
58          );
59        }
60
61        $sources['source']['regions'][$region][] = $source;
62      }
63    }
64
65    // Restore default theme after rendering.
66    $this->themeManager->setActiveTheme($current_theme);
67
68    return $sources;
69  }
70
71  /**
72   * Convert block plugins.
73   *
74   * @param \Drupal\Core\Block\BlockPluginInterface $block
75   *   The block plugin to convert.
76   *
77   * @return array
78   *   A single UI Patterns source data.
79   */
80  private function convertBlock(BlockPluginInterface $block): array {
81    $block_id = $block->getPluginId();
82
83    if ($block_id === 'system_main_block') {
84      return [
85        'source_id' => 'main_page_content',
86        'source' => [],
87      ];
88    }
89
90    if ($block_id === 'page_title_block') {
91      return [
92        'source_id' => 'page_title',
93        'source' => [],
94      ];
95    }
96
97    return [
98      'source_id' => 'block',
99      'source' => [
100        'plugin_id' => $block_id,
101        $block_id => $block->getConfiguration(),
102      ],
103    ];
104  }
105
106}