NodeTokensHooks.php

<?php

namespace Drupal\node\Hook;

use Drupal\Core\Datetime\Entity\DateFormat;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\user\Entity\User;
use Drupal\Core\Language\LanguageInterface;
use Drupal\Core\Render\BubbleableMetadata;
use Drupal\Core\Hook\Attribute\Hook;

/**
 * Hook implementations for node.
 */
class NodeTokensHooks {
  use StringTranslationTrait;
  
  /**
   * Implements hook_token_info().
   */
  public function tokenInfo() : array {
    $type = [
      'name' => $this->t('Nodes'),
      'description' => $this->t('Tokens related to individual content items, or "nodes".'),
      'needs-data' => 'node',
    ];
    // Core tokens for nodes.
    $node['nid'] = [
      'name' => $this->t("Content ID"),
      'description' => $this->t('The unique ID of the content item, or "node".'),
    ];
    $node['uuid'] = [
      'name' => $this->t('UUID'),
      'description' => $this->t('The UUID of the content item, or "node".'),
    ];
    $node['vid'] = [
      'name' => $this->t("Revision ID"),
      'description' => $this->t("The unique ID of the node's latest revision."),
    ];
    $node['type'] = [
      'name' => $this->t("Content type"),
    ];
    $node['type-name'] = [
      'name' => $this->t("Content type name"),
      'description' => $this->t("The human-readable name of the node type."),
    ];
    $node['title'] = [
      'name' => $this->t("Title"),
    ];
    $node['body'] = [
      'name' => $this->t("Body"),
      'description' => $this->t("The main body text of the node."),
    ];
    $node['summary'] = [
      'name' => $this->t("Summary"),
      'description' => $this->t("The summary of the node's main body text."),
    ];
    $node['langcode'] = [
      'name' => $this->t('Language code'),
      'description' => $this->t('The language code of the language the node is written in.'),
    ];
    $node['published_status'] = [
      'name' => $this->t('Published'),
      'description' => $this->t('The publication status of the node ("Published" or "Unpublished").'),
    ];
    $node['url'] = [
      'name' => $this->t("URL"),
      'description' => $this->t("The URL of the node."),
    ];
    $node['edit-url'] = [
      'name' => $this->t("Edit URL"),
      'description' => $this->t("The URL of the node's edit page."),
    ];
    // Chained tokens for nodes.
    $node['created'] = [
      'name' => $this->t("Date created"),
      'type' => 'date',
    ];
    $node['changed'] = [
      'name' => $this->t("Date changed"),
      'description' => $this->t("The date the node was most recently updated."),
      'type' => 'date',
    ];
    $node['author'] = [
      'name' => $this->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) : array {
    $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() ? $this->t('Published') : $this->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() ?: 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;
  }

}