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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\Helper;

use Cnc\SerialNumber\Model\Logger;
use Magento\Framework\App\ResourceConnection;

class Index
{
    const TABLE_NAME = 'cnc_serial_number_index';

    /**
     * @var ResourceConnection
     */
    private $resourceConnection;
    /**
     * @var Logger
     */
    private $logger;

    /**
     * Index constructor.
     * @param ResourceConnection $resourceConnection
     * @param Logger $logger
     */
    public function __construct(ResourceConnection $resourceConnection, Logger $logger)
    {
        $this->resourceConnection = $resourceConnection;
        $this->logger = $logger;
    }

    /**
     * Get last serial number index.
     *
     * @return int
     */
    public function getLastIndex(): int
    {
        $conn = $this->resourceConnection->getConnection();
        $sql = sprintf(
            'SELECT version FROM %s WHERE source_code = \'%s\'',
            self::TABLE_NAME,
            'all'
        );

        $version = $conn->fetchOne($sql);
        return $version ? (int) $version : 38000;
    }

    /**
     * Increase index by value.
     *
     * @param int $value
     * @return bool
     */
    public function increaseIndex(int $value): bool
    {
        $current = $this->getLastIndex();
        $new = $current + $value;
        $conn = $this->resourceConnection->getConnection();
        $success = (bool) $conn->insertOnDuplicate(
            self::TABLE_NAME,
            [
                'source_code' => 'all',
                'version' => $new
            ]
        );
        $message = 'increasing index (source_code, new_index, success): [' .
            implode(', ', [
                'all',
                $new,
                $success
            ])
            . ']';
        $this->logger->log($message);

        return $success;
    }
}