class EntityAccess

class EntityAccess {
    public function __construct(EntityTypeManagerInterface $entityTypeManager, WorkspaceManagerInterface $workspaceManager, WorkspaceInformationInterface $workspaceInfo) {
    }
    
    /**
     * Implements hook_entity_access().
     */
    public function entityAccess(EntityInterface $entity, $operation, AccountInterface $account) : AccessResultInterface {
        // Workspaces themselves are handled by their own access handler and we
        // should not try to do any access checks for entity types that can not
        // belong to a workspace.
        if (!$this->workspaceInfo
            ->isEntitySupported($entity) || !$this->workspaceManager
            ->hasActiveWorkspace()) {
            return AccessResult::neutral();
        }
        // Prevent the deletion of entities with a published default revision.
        if ($operation === 'delete') {
            $active_workspace = $this->workspaceManager
                ->getActiveWorkspace();
            $is_deletable = $this->workspaceInfo
                ->isEntityDeletable($entity, $active_workspace);
            return AccessResult::forbiddenIf(!$is_deletable)->addCacheableDependency($entity)
                ->addCacheableDependency($active_workspace);
        }
        return $this->bypassAccessResult($account);
    }
    
    /**
     * Implements hook_entity_create_access().
     */
    public function entityCreateAccess(AccountInterface $account, array $context, $entity_bundle) : AccessResultInterface {
        // Workspaces themselves are handled by their own access handler and we
        // should not try to do any access checks for entity types that can not
        // belong to a workspace.
        $entity_type = $this->entityTypeManager
            ->getDefinition($context['entity_type_id']);
        if (!$this->workspaceInfo
            ->isEntityTypeSupported($entity_type) || !$this->workspaceManager
            ->hasActiveWorkspace()) {
            return AccessResult::neutral();
        }
        return $this->bypassAccessResult($account);
    }
    
    /**
     * Checks the 'bypass' permissions.
     *
     * @param \Drupal\Core\Session\AccountInterface $account
     *   The user account making the to check access for.
     *
     * @return \Drupal\Core\Access\AccessResultInterface
     *   The result of the access check.
     */
    protected function bypassAccessResult(AccountInterface $account) : AccessResultInterface {
        // This approach assumes that the current "global" active workspace is
        // correct, i.e. if you're "in" a given workspace then you get ALL THE PERMS
        // to ALL THE THINGS! That's why this is a dangerous permission.
        $active_workspace = $this->workspaceManager
            ->getActiveWorkspace();
        return AccessResult::allowedIf($active_workspace->getOwnerId() == $account->id())
            ->cachePerUser()
            ->addCacheableDependency($active_workspace)
            ->andIf(AccessResult::allowedIfHasPermission($account, 'bypass entity access own workspace'));
    }

}