islandora_rdm_datacite.module

<?php

/**
 * @file
 * Contains islandora_rdm_datacite.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\islandora\Plugin\ContextReaction\DeleteReaction;
/**
 * Implements hook_help().
 */
function islandora_rdm_datacite_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the islandora_rdm_datacite module.
    case 'help.page.islandora_rdm_datacite':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('DataCite API and services for producing DataCite data formats.') . '</p>';
      return $output;

    default:
  }
}


/**
 * Implementation of hook_node_update().
 * Register the identifier with Datacite as 'Archived' if the node transitions away from 'Published'..
 * This has to be separate from the presave hook because:
 * 1. You can't update the node in this hook
 * 2. The moderation state chagne is not available in the presave hook.
 *
 * @TODO: Replace this code if this is committed to core: https://www.drupal.org/project/drupal/issues/2873287
 *
 * @param \Drupal\Core\Entity\EntityInterface $entity
 */
function islandora_rdm_datacite_node_update(EntityInterface $entity) {

  if ($entity->bundle() !== 'islandora_rdm_dataset') {
    return;
  }
  $new_moderation_state = _islandora_rdm_datacite_get_entity_moderation_state($entity);
  if (!empty($entity->original)) {
    $original_moderation_state = _islandora_rdm_datacite_get_entity_moderation_state($entity->original);
  }
  else {
    return;
  }

  $workflow_transition = rtrim($original_moderation_state . '-->' . $new_moderation_state);

  switch ($workflow_transition) {
    case 'published-->archived':
    case 'archived-->archived':
    $utils = \Drupal::service('islandora.utils');

    // Execute delete reactions.
    $utils->executeNodeReactions('\Drupal\islandora\Plugin\ContextReaction\DeleteReaction', $entity);

    break;
  }

  return FALSE;
}

/**
 * Helper function to get a node's moderation state string.
 *
 * @param \Drupal\Core\Entity\EntityInterface $entity
 *  The entity to get the moderation state from.
 * @return false|mixed
 *   The moderation state string or FALSE if not found.
 */
function _islandora_rdm_datacite_get_entity_moderation_state(EntityInterface $entity) {
  $current_entity_lang = $entity->get('langcode')->value;
  $translated_entity = $entity->getTranslation($current_entity_lang);
  if ($moderation_state_field = $translated_entity->get('moderation_state')
    ->first()) {
    return $moderation_state_field->getValue()['value'];
  }

  return FALSE;
}