islandora_hierarchical_access.module

<?php

/**
 * @file
 * General module hook implementations.
 */

use Drupal\Core\Access\AccessResult;
use Drupal\Core\Access\AccessResultInterface;
use Drupal\Core\Database\Query\AlterableInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\Sql\SqlEntityStorageInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\islandora_hierarchical_access\EntityAccessHandler;
use Drupal\islandora_hierarchical_access\EntityCUDHandler;

/**
 * Implements hook_entity_type_alter().
 */
function islandora_hierarchical_access_entity_type_alter(array &$entity_types) : void {
  /** @var \Drupal\Core\Entity\EntityTypeInterface $entity_type */
  foreach ($entity_types as $entity_type) {
    if (!is_a($entity_type->getStorageClass(), SqlEntityStorageInterface::class, TRUE)) {
      continue;
    }

    EntityCUDHandler::attach($entity_type);
    EntityAccessHandler::attach($entity_type);
  }
}

/**
 * Implements hook_entity_insert().
 */
function islandora_hierarchical_access_entity_insert(EntityInterface $entity) : void {
  /** @var \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager */
  $entity_type_manager = \Drupal::service('entity_type.manager');
  $entity_type_id = $entity->getEntityTypeId();
  if ($entity_type_manager->hasHandler($entity_type_id, EntityCUDHandler::NAME)) {
    /** @var \Drupal\islandora_hierarchical_access\EntityCUDHandlerInterface $handler */
    $handler = $entity_type_manager->getHandler($entity_type_id, EntityCUDHandler::NAME);
    $handler->create($entity);
  }
}

/**
 * Implements hook_entity_update().
 */
function islandora_hierarchical_access_entity_update(EntityInterface $entity) : void {
  /** @var \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager */
  $entity_type_manager = \Drupal::service('entity_type.manager');
  $entity_type_id = $entity->getEntityTypeId();
  if ($entity_type_manager->hasHandler($entity_type_id, EntityCUDHandler::NAME)) {
    /** @var \Drupal\islandora_hierarchical_access\EntityCUDHandlerInterface $handler */
    $handler = $entity_type_manager->getHandler($entity_type_id, EntityCUDHandler::NAME);
    $handler->update($entity);
  }
}

/**
 * Implements hook_entity_delete().
 */
function islandora_hierarchical_access_entity_delete(EntityInterface $entity) : void {
  /** @var \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager */
  $entity_type_manager = \Drupal::service('entity_type.manager');
  $entity_type_id = $entity->getEntityTypeId();
  if ($entity_type_manager->hasHandler($entity_type_id, EntityCUDHandler::NAME)) {
    /** @var \Drupal\islandora_hierarchical_access\EntityCUDHandlerInterface $handler */
    $handler = $entity_type_manager->getHandler($entity_type_id, EntityCUDHandler::NAME);
    $handler->delete($entity);
  }
}

/**
 * Implements hook_entity_access().
 */
function islandora_hierarchical_access_entity_access(
  EntityInterface $entity,
  $operation,
  AccountInterface $account
) : AccessResultInterface {
  /** @var \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager */
  $entity_type_manager = \Drupal::service('entity_type.manager');
  $entity_type_id = $entity->getEntityTypeId();
  if ($entity_type_manager->hasHandler($entity_type_id, EntityAccessHandler::NAME)) {
    /** @var \Drupal\islandora_hierarchical_access\EntityAccessHandlerInterface $handler */
    $handler = $entity_type_manager->getHandler($entity_type_id, EntityAccessHandler::NAME);
    return $handler->check(
      $entity,
      $operation,
      $account
    );
  }

  return AccessResult::neutral("Unhandled entity type.");
}

/**
 * Implements hook_query_TAG_alter() for file_access tagged queries.
 */
function islandora_hierarchical_access_query_file_access_alter(AlterableInterface $query) : void {
  if ($query->hasTag('islandora_hierarchical_access_subquery')) {
    // We expect that things should be handled via our event instead.
    return;
  }
  assert($query->getMetaData('islandora_hierarchical_access_tag_type') === NULL);
  \Drupal::service('islandora_hierarchical_access.query_tagger')
    ->tagQuery($query->addMetaData('islandora_hierarchical_access_tag_type', 'file'));
}

/**
 * Implements hook_query_TAG_alter() for media_access tagged queries.
 */
function islandora_hierarchical_access_query_media_access_alter(AlterableInterface $query) : void {
  if ($query->hasTag('islandora_hierarchical_access_subquery')) {
    // We expect that things should be handled via our event instead.
    return;
  }
  assert($query->getMetaData('islandora_hierarchical_access_tag_type') === NULL);
  \Drupal::service('islandora_hierarchical_access.query_tagger')
    ->tagQuery($query->addMetaData('islandora_hierarchical_access_tag_type', 'media'));
}