class NodeTokensHooks

class NodeTokensHooks {
    
    /**
     * Implements hook_token_info().
     */
    public function tokenInfo() {
        $type = [
            'name' => t('Nodes'),
            'description' => t('Tokens related to individual content items, or "nodes".'),
            'needs-data' => 'node',
        ];
        // Core tokens for nodes.
        $node['nid'] = [
            'name' => t("Content ID"),
            'description' => t('The unique ID of the content item, or "node".'),
        ];
        $node['uuid'] = [
            'name' => t('UUID'),
            'description' => t('The UUID of the content item, or "node".'),
        ];
        $node['vid'] = [
            'name' => t("Revision ID"),
            'description' => t("The unique ID of the node's latest revision."),
        ];
        $node['type'] = [
            'name' => t("Content type"),
        ];
        $node['type-name'] = [
            'name' => t("Content type name"),
            'description' => t("The human-readable name of the node type."),
        ];
        $node['title'] = [
            'name' => t("Title"),
        ];
        $node['body'] = [
            'name' => t("Body"),
            'description' => t("The main body text of the node."),
        ];
        $node['summary'] = [
            'name' => t("Summary"),
            'description' => t("The summary of the node's main body text."),
        ];
        $node['langcode'] = [
            'name' => t('Language code'),
            'description' => t('The language code of the language the node is written in.'),
        ];
        $node['published_status'] = [
            'name' => t('Published'),
            'description' => t('The publication status of the node ("Published" or "Unpublished").'),
        ];
        $node['url'] = [
            'name' => t("URL"),
            'description' => t("The URL of the node."),
        ];
        $node['edit-url'] = [
            'name' => t("Edit URL"),
            'description' => t("The URL of the node's edit page."),
        ];
        // Chained tokens for nodes.
        $node['created'] = [
            'name' => t("Date created"),
            'type' => 'date',
        ];
        $node['changed'] = [
            'name' => t("Date changed"),
            'description' => t("The date the node was most recently updated."),
            'type' => 'date',
        ];
        $node['author'] = [
            'name' => t("Author"),
            'type' => 'user',
        ];
        return [
            'types' => [
                'node' => $type,
            ],
            'tokens' => [
                'node' => $node,
            ],
        ];
    }
    
    /**
     * Implements hook_tokens().
     */
    public function tokens($type, $tokens, array $data, array $options, BubbleableMetadata $bubbleable_metadata) {
        $token_service = \Drupal::token();
        $url_options = [
            'absolute' => TRUE,
        ];
        if (isset($options['langcode'])) {
            $url_options['language'] = \Drupal::languageManager()->getLanguage($options['langcode']);
            $langcode = $options['langcode'];
        }
        else {
            $langcode = LanguageInterface::LANGCODE_DEFAULT;
        }
        $replacements = [];
        if ($type == 'node' && !empty($data['node'])) {
            
            /** @var \Drupal\node\NodeInterface $node */
            $node = $data['node'];
            foreach ($tokens as $name => $original) {
                switch ($name) {
                    // Simple key values on the node.
                    case 'nid':
                        $replacements[$original] = $node->id();
                        break;
                    case 'uuid':
                        $replacements[$original] = $node->uuid();
                        break;
                    case 'vid':
                        $replacements[$original] = $node->getRevisionId();
                        break;
                    case 'type':
                        $replacements[$original] = $node->getType();
                        break;
                    case 'type-name':
                        $type_name = node_get_type_label($node);
                        $replacements[$original] = $type_name;
                        break;
                    case 'title':
                        $replacements[$original] = $node->getTitle();
                        break;
                    case 'body':
                    case 'summary':
                        $translation = \Drupal::service('entity.repository')->getTranslationFromContext($node, $langcode, [
                            'operation' => 'node_tokens',
                        ]);
                        if ($translation->hasField('body') && ($items = $translation->get('body')) && !$items->isEmpty()) {
                            $item = $items[0];
                            // If the summary was requested and is not empty, use it.
                            if ($name == 'summary' && !empty($item->summary)) {
                                $output = $item->summary_processed;
                            }
                            else {
                                $output = $item->processed;
                                // A summary was requested.
                                if ($name == 'summary') {
                                    // Generate an optionally trimmed summary of the body field.
                                    // Get the 'trim_length' size used for the 'teaser' mode, if
                                    // present, or use the default trim_length size.
                                    $display_options = \Drupal::service('entity_display.repository')->getViewDisplay('node', $node->getType(), 'teaser')
                                        ->getComponent('body');
                                    if (isset($display_options['settings']['trim_length'])) {
                                        $length = $display_options['settings']['trim_length'];
                                    }
                                    else {
                                        $settings = \Drupal::service('plugin.manager.field.formatter')->getDefaultSettings('text_summary_or_trimmed');
                                        $length = $settings['trim_length'];
                                    }
                                    $output = text_summary($output, $item->format, $length);
                                }
                            }
                            // "processed" returns a \Drupal\Component\Render\MarkupInterface
                            // via check_markup().
                            $replacements[$original] = $output;
                        }
                        break;
                    case 'langcode':
                        $replacements[$original] = $node->language()
                            ->getId();
                        break;
                    case 'published_status':
                        $replacements[$original] = $node->isPublished() ? t('Published') : t('Unpublished');
                        break;
                    case 'url':
                        $replacements[$original] = $node->toUrl('canonical', $url_options)
                            ->toString();
                        break;
                    case 'edit-url':
                        $replacements[$original] = $node->toUrl('edit-form', $url_options)
                            ->toString();
                        break;
                    // Default values for the chained tokens handled below.
                    case 'author':
                        $account = $node->getOwner() ? $node->getOwner() : User::load(0);
                        $bubbleable_metadata->addCacheableDependency($account);
                        $replacements[$original] = $account->label();
                        break;
                    case 'created':
                        $date_format = DateFormat::load('medium');
                        $bubbleable_metadata->addCacheableDependency($date_format);
                        $replacements[$original] = \Drupal::service('date.formatter')->format($node->getCreatedTime(), 'medium', '', NULL, $langcode);
                        break;
                    case 'changed':
                        $date_format = DateFormat::load('medium');
                        $bubbleable_metadata->addCacheableDependency($date_format);
                        $replacements[$original] = \Drupal::service('date.formatter')->format($node->getChangedTime(), 'medium', '', NULL, $langcode);
                        break;
                }
            }
            if ($author_tokens = $token_service->findWithPrefix($tokens, 'author')) {
                $replacements += $token_service->generate('user', $author_tokens, [
                    'user' => $node->getOwner(),
                ], $options, $bubbleable_metadata);
            }
            if ($created_tokens = $token_service->findWithPrefix($tokens, 'created')) {
                $replacements += $token_service->generate('date', $created_tokens, [
                    'date' => $node->getCreatedTime(),
                ], $options, $bubbleable_metadata);
            }
            if ($changed_tokens = $token_service->findWithPrefix($tokens, 'changed')) {
                $replacements += $token_service->generate('date', $changed_tokens, [
                    'date' => $node->getChangedTime(),
                ], $options, $bubbleable_metadata);
            }
        }
        return $replacements;
    }

}