Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\media;
Chris@0: 
Chris@0: use Drupal\Core\Access\AccessResult;
Chris@0: use Drupal\Core\Entity\EntityAccessControlHandler;
Chris@0: use Drupal\Core\Entity\EntityInterface;
Chris@0: use Drupal\Core\Session\AccountInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Defines an access control handler for media items.
Chris@0:  */
Chris@0: class MediaAccessControlHandler extends EntityAccessControlHandler {
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
Chris@0:     if ($account->hasPermission('administer media')) {
Chris@0:       return AccessResult::allowed()->cachePerPermissions();
Chris@0:     }
Chris@0: 
Chris@0:     $type = $entity->bundle();
Chris@0:     $is_owner = ($account->id() && $account->id() === $entity->getOwnerId());
Chris@0:     switch ($operation) {
Chris@0:       case 'view':
Chris@0:         $access_result = AccessResult::allowedIf($account->hasPermission('view media') && $entity->isPublished())
Chris@0:           ->cachePerPermissions()
Chris@0:           ->addCacheableDependency($entity);
Chris@0:         if (!$access_result->isAllowed()) {
Chris@0:           $access_result->setReason("The 'view media' permission is required and the media item must be published.");
Chris@0:         }
Chris@0:         return $access_result;
Chris@0: 
Chris@0:       case 'update':
Chris@0:         if ($account->hasPermission('edit any ' . $type . ' media')) {
Chris@0:           return AccessResult::allowed()->cachePerPermissions();
Chris@0:         }
Chris@0:         if ($account->hasPermission('edit own ' . $type . ' media') && $is_owner) {
Chris@0:           return AccessResult::allowed()->cachePerPermissions()->cachePerUser()->addCacheableDependency($entity);
Chris@0:         }
Chris@0:         // @todo Deprecate this permission in
Chris@0:         // https://www.drupal.org/project/drupal/issues/2925459.
Chris@0:         if ($account->hasPermission('update any media')) {
Chris@0:           return AccessResult::allowed()->cachePerPermissions();
Chris@0:         }
Chris@0:         if ($account->hasPermission('update media') && $is_owner) {
Chris@0:           return AccessResult::allowed()->cachePerPermissions()->cachePerUser()->addCacheableDependency($entity);
Chris@0:         }
Chris@0:         return AccessResult::neutral()->cachePerPermissions();
Chris@0: 
Chris@0:       case 'delete':
Chris@0:         if ($account->hasPermission('delete any ' . $type . ' media')) {
Chris@0:           return AccessResult::allowed()->cachePerPermissions();
Chris@0:         }
Chris@0:         if ($account->hasPermission('delete own ' . $type . ' media') && $is_owner) {
Chris@0:           return AccessResult::allowed()->cachePerPermissions()->cachePerUser()->addCacheableDependency($entity);
Chris@0:         }
Chris@0:         // @todo Deprecate this permission in
Chris@0:         // https://www.drupal.org/project/drupal/issues/2925459.
Chris@0:         if ($account->hasPermission('delete any media')) {
Chris@0:           return AccessResult::allowed()->cachePerPermissions();
Chris@0:         }
Chris@0:         if ($account->hasPermission('delete media') && $is_owner) {
Chris@0:           return AccessResult::allowed()->cachePerPermissions()->cachePerUser()->addCacheableDependency($entity);
Chris@0:         }
Chris@0:         return AccessResult::neutral()->cachePerPermissions();
Chris@0: 
Chris@0:       default:
Chris@0:         return AccessResult::neutral()->cachePerPermissions();
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   protected function checkCreateAccess(AccountInterface $account, array $context, $entity_bundle = NULL) {
Chris@0:     $permissions = [
Chris@0:       'administer media',
Chris@0:       'create media',
Chris@0:       'create ' . $entity_bundle . ' media',
Chris@0:     ];
Chris@0:     return AccessResult::allowedIfHasPermissions($account, $permissions, 'OR');
Chris@0:   }
Chris@0: 
Chris@0: }