ComponentHelper::getForumPermission

static function getForumPermission(array $params = []): ?string
{
	global $USER;
	$currentUserId = $USER->getId();
	$isCurrentUserAdmin = CSocNetUser::isCurrentUserModuleAdmin();
	$entityType = ($params['ENTITY_TYPE'] ?? SONET_ENTITY_USER);
	$entityId = (int)($params['ENTITY_ID'] ?? 0);

	$result = null;

	if (
		!Loader::includeModule('forum')
		|| !in_array($entityType, [ SONET_ENTITY_GROUP, SONET_ENTITY_USER ], true)
	)
	{
		return $result;
	}

	$result = Permission::ACCESS_DENIED;

	if (CSocNetFeaturesPerms::canPerformOperation($currentUserId, $entityType, $entityId, 'forum', 'full', $isCurrentUserAdmin))
	{
		$result = Permission::FULL_ACCESS;
	}
	elseif (CSocNetFeaturesPerms::CanPerformOperation($currentUserId, $entityType, $entityId, 'forum', 'newtopic', $isCurrentUserAdmin))
	{
		$result = Permission::CAN_ADD_TOPIC;
	}
	elseif (CSocNetFeaturesPerms::CanPerformOperation($currentUserId, $entityType, $entityId, 'forum', 'answer', $isCurrentUserAdmin))
	{
		$result = Permission::CAN_ADD_MESSAGE;
	}
	elseif (CSocNetFeaturesPerms::CanPerformOperation($currentUserId, $entityType, $entityId, 'forum', 'view', $isCurrentUserAdmin))
	{
		$result = Permission::CAN_READ;
	}

	return $result;
}