SendingService::detectReasonSendError

private function detectReasonSendError($type, $reason = ''): string
{
	if (!empty($reason))
	{
		$sanitizer = new CBXSanitizer;
		$sanitizer->addTags([
			'a' => ['href','style', 'target'],
			'b' => [],
			'u' => [],
			'i' => [],
			'br' => [],
			'span' => ['style'],
		]);
		$reason = $sanitizer->sanitizeHtml($reason);
	}
	else
	{
		if ($type == Chat::IM_TYPE_PRIVATE)
		{
			$reason = Loc::getMessage('IM_ERROR_MESSAGE_CANCELED');
		}
		else if ($type == Chat::IM_TYPE_SYSTEM)
		{
			$reason = Loc::getMessage('IM_ERROR_NOTIFY_CANCELED');
		}
		else
		{
			$reason = Loc::getMessage('IM_ERROR_GROUP_CANCELED');
		}
	}

	return $reason;
}