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<?php
/**
 * Copyright (c) 2020 Kaliop Digital Commerce (https://digitalcommerce.kaliop.com) All Rights Reserved.
 * https://opensource.org/licenses/OSL-3.0  Open Software License (OSL 3.0)
 * Krzysztof Majkowski <[email protected]>
 */

declare(strict_types=1);

namespace Cnc\SerialNumber\Model;

use Magento\Backend\Model\Auth\Session;

class Logger
{
    const LOG_FILE = 'serial_number.log';

    /**
     * @var \Zend\Log\Writer\Stream
     */
    private $writer;

    /**
     * @var \Zend\Log\Logger
     */
    private $logger;

    /**
     * @var Session
     */
    private $authSession;

    /**
     * Logger constructor.
     * @param Session $authSession
     */
    public function __construct(Session $authSession)
    {
        $this->authSession = $authSession;

        $this->writer = new \Zend_Log_Writer_Stream(BP . '/var/log/' . self::LOG_FILE);
        $this->logger = new \Zend_Log();
        $this->logger->addWriter($this->writer);
    }

    /**
     * Log message.
     *
     * @param $message
     */
    public function log($message)
    {
        if ($this->getAdminUserId()) {
            $message = '[Admin: ' . $this->getAdminUserName() . ' (id: ' . $this->getAdminUserId() . ')] - ' . $message;
        }
        $this->logger->info($message);
    }

    /**
     * Get admin user id.
     *
     * @return int
     */
    private function getAdminUserId(): int
    {
        if ($this->authSession->getUser()) {
            return (int) $this->authSession->getUser()->getId();
        }

        return 0;
    }

    /**
     * Get admin user name.
     *
     * @return string|null
     */
    private function getAdminUserName(): ?string
    {
        if ($this->authSession->getUser()) {
            return $this->authSession->getUser()->getUserName();
        }

        return null;
    }
}