<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
declare(strict_types=1);

namespace Magento\Framework\Lock\Backend;

use Magento\Framework\Cache\FrontendInterface;

/**
 * Implementation of the lock manager on the basis of the caching system.
 */
class Cache implements \Magento\Framework\Lock\LockManagerInterface
{
    /**
     * Prefix for marking that key is locked or not.
     */
    const LOCK_PREFIX = 'LOCKED_RECORD_INFO_';

    /**
     * @var FrontendInterface
     */
    private $cache;

    /**
     * @param FrontendInterface $cache
     */
    public function __construct(FrontendInterface $cache)
    {
        $this->cache = $cache;
    }

    /**
     * @inheritdoc
     */
    public function lock(string $name, int $timeout = -1): bool
    {
        if ((bool)$this->cache->test($this->getIdentifier($name))) {
             return false;
        }

        return $this->cache->save('1', $this->getIdentifier($name), [], $timeout);
    }

    /**
     * @inheritdoc
     */
    public function unlock(string $name): bool
    {
        return $this->cache->remove($this->getIdentifier($name));
    }

    /**
     * @inheritdoc
     */
    public function isLocked(string $name): bool
    {
        return (bool)$this->cache->test($this->getIdentifier($name));
    }

    /**
     * Get cache locked identifier based on cache identifier.
     *
     * @param string $cacheIdentifier
     * @return string
     */
    private function getIdentifier(string $cacheIdentifier): string
    {
        return self::LOCK_PREFIX . $cacheIdentifier;
    }
}
