graphql_compose-1.0.0-beta20/modules/graphql_compose_metatags/graphql_compose_metatags.module

<?php

/**
 * @file
 * GraphQL Compose Metatags module file.
 */

declare(strict_types=1);

use Drupal\Core\Entity\FieldableEntityInterface;
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\graphql_compose\Plugin\GraphQLCompose\GraphQLComposeEntityTypeInterface;

/**
 * Implements hook_graphql_compose_entity_base_fields_alter().
 *
 * Enable metatag field to all defined entity types.
 * Ensure metatag field is multiple.
 */
function graphql_compose_metatags_graphql_compose_entity_base_fields_alter(array &$fields, string $entity_type_id): void {
  /** @var \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager */
  $entity_type_manager = \Drupal::service('entity_type.manager');
  $entity_type = $entity_type_manager->getDefinition($entity_type_id);

  if (!$entity_type->entityClassImplements(FieldableEntityInterface::class)) {
    return;
  }

  /** @var \Drupal\Core\Entity\EntityFieldManagerInterface $entity_field_manager */
  $entity_field_manager = \Drupal::service('entity_field.manager');
  $base_fields = $entity_field_manager->getBaseFieldDefinitions($entity_type_id);

  if (array_key_exists('metatag', $base_fields)) {
    $fields['metatag'] = [
      'multiple' => TRUE,
    ];
  }
}

/**
 * Implements hook_graphql_compose_entity_interfaces_alter().
 */
function graphql_compose_metatags_graphql_compose_entity_interfaces_alter(array &$interfaces, GraphQLComposeEntityTypeInterface $plugin, ?string $bundle_id) {

  $base_fields = $plugin->getBaseFields();

  // Add MetaTagInterface to enabled entity type.
  if (array_key_exists('metatag', $base_fields)) {
    $interfaces[] = 'MetaTagInterface';
  }
}

/**
 * Implements hook_graphql_compose_field_type_form_alter().
 *
 * Hide metatag fields from form, they are implemented as base fields.
 * This could lead to confusion having them in the UI.
 */
function graphql_compose_metatags_graphql_compose_field_type_form_alter(array &$form, FormStateInterface $form_state, FieldDefinitionInterface $field, array $settings) {
  if ($field->getType() === 'metatag') {
    $form = [
      '#type' => 'markup',
      '#access' => FALSE,
    ];
  }
}