<?php
/**
 * Copyright since 2014 Waynet Sp. z o.o.
 * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.md.
 * It is also available through the world-wide-web at this URL:
 * https://opensource.org/licenses/OSL-3.0
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to kontakt@waynet.pl so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please refer to https://devdocs.prestashop-project.org/ for more information.
 *
 * @author    Waynet Sp. z o.o. <kontakt@waynet.pl>
 * @copyright since 2014 Waynet Sp. z o.o.
 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 */

declare(strict_types=1);

namespace Waynet\Security\Repository\Configuration;

use Waynet\Security\Adapter\ConfigurationAdapter;
use Waynet\Security\Cache\ArrayCache;
use Waynet\Security\Cache\CacheInterface;
use Waynet\Security\Exception\TransactionFailedException;
use Waynet\Security\Exception\UnableToDecryptDataException;
use Waynet\Security\Repository\Traits\RunTransactionTrait;

abstract class ConfigurationRepository
{
    use RunTransactionTrait;

    private $adapter;
    private $cache;
    private $encryptionHandler;

    public function __construct(
        \Db $db,
        ConfigurationAdapter $adapter,
        CacheInterface $cache = null,
        \PhpEncryption $encryptionHandler = null
    ) {
        $this->db = $db;
        $this->adapter = $adapter;
        $this->cache = $cache ?? new ArrayCache();
        $this->encryptionHandler = $encryptionHandler ?? new \PhpEncryption(_NEW_COOKIE_KEY_);
    }

    /** @return mixed */
    protected function get(string $key, bool $global = true)
    {
        return $this->adapter->get($key, $global);
    }

    /**
     * @param mixed $value
     */
    protected function set(string $key, $value, bool $global = true): bool
    {
        return $this->adapter->set($key, $value, $global);
    }

    protected function delete(string $key): bool
    {
        return $this->adapter->delete($key);
    }

    /**
     * @throws UnableToDecryptDataException|\Exception
     */
    protected function getEncrypted(string $key, bool $global = true): ?string
    {
        if ($this->cache->has($key)) {
            return $this->cache->get($key);
        }

        $encrypted = $this->get($key, $global);
        $value = $this->decrypt($encrypted, $key);

        $this->cache->set($key, $value);

        return $value;
    }

    /**
     * @param mixed $value
     */
    protected function setEncrypted(string $key, $value, bool $global = true): bool
    {
        $encrypted = null === $value
            ? null
            : $this->encryptionHandler->encrypt($key . $value);

        if (!$this->set($key, $encrypted, $global)) {
            return false;
        }

        $this->cache->set($key, $value);

        return true;
    }

    protected function getTransactionResult(callable $callback, ...$arguments): bool
    {
        try {
            $this->runTransaction($callback, ...$arguments);

            return true;
        } catch (TransactionFailedException $exception) {
            return false;
        }
    }

    /**
     * @throws UnableToDecryptDataException|\Exception
     */
    private function decrypt(?string $encrypted, string $key): ?string
    {
        if (!$encrypted) {
            return null;
        }

        if (false === $decrypted = $this->encryptionHandler->decrypt($encrypted)) {
            throw new UnableToDecryptDataException(sprintf('Could not decrypt data under configuration key "%s"', $key));
        }

        return preg_replace("/^$key/", '', $decrypted);
    }
}