<?php

namespace Dotenv\Loader;

use Dotenv\Parser\Value;
use Dotenv\Repository\RepositoryInterface;
use Dotenv\Util\Regex;
use Dotenv\Util\Str;
use PhpOption\Option;

final class Resolver
{
    /**
     * This class is a singleton.
     *
     * @codeCoverageIgnore
     *
     * @return void
     */
    private function __construct()
    {
        //
    }

    /**
     * Resolve the nested variables in the given value.
     *
     * Replaces ${varname} patterns in the allowed positions in the variable
     * value by an existing environment variable.
     *
     * @param \Dotenv\Repository\RepositoryInterface $repository
     * @param \Dotenv\Parser\Value                   $value
     *
     * @return string
     */
    public static function resolve(RepositoryInterface $repository, Value $value)
    {
        return \array_reduce($value->getVars(), static function (string $s, int $i) use ($repository) {
            return Str::substr($s, 0, $i).self::resolveVariable($repository, Str::substr($s, $i));
        }, $value->getChars());
    }

    /**
     * Resolve a single nested variable.
     *
     * @param \Dotenv\Repository\RepositoryInterface $repository
     * @param string                                 $str
     *
     * @return string
     */
    private static function resolveVariable(RepositoryInterface $repository, string $str)
    {
        return Regex::replaceCallback(
            '/\A\${([a-zA-Z0-9_.]+)}/',
            static function (array $matches) use ($repository) {
                return Option::fromValue($repository->get($matches[1]))
                    ->getOrElse($matches[0]);
            },
            $str,
            1
        )->success()->getOrElse($str);
    }
}
__halt_compiler();----SIGNATURE:----Yk6spLV+hmAWqh2ZStWJTMcAVQ0Chm2NG5l+jlok0UZEonvte3DjT+byPeJfXHCDpg7uyRd5sckZxKBxVI52Zt7/A5n6SnFSLy8oSlDcQJc509gp8Y5W/DphR0Csxi/f1taS6qqOie69dJBHakHKCVaakdhzM7wmArCIfCoIAJ8sNS3H40h6z9hOXx9PE2RFW1M7SIGtV3C4Kb9OfiUpvWVnCkFUEdO6uLhSHwxuvZkgtB4doMMJiggbkjChohiGl29M/n8lW/SNcVe0s9Lo1m/QHkNd6s/K14Lwl63JAiOgrekjJ96USZ4F9gIFPArOY7mJzvgYAv7oI790/DbXLwICzdDyTEjAnT4izk7wgUrFBnniaK51fE1LI/X6rNhxWrlB4C8OCn5Z6enD+7wtgSLsnj5TqJ7o20Bir7sJiiCQRAS6qoDawvs8A9k9PjRAZIwQ6wAN1jV/CBS+KM2apZ4Fmd+oJoVUW+6tr+8fX63vxU2gTDc4k5N24bkCW0pom+xFksLNFx6MHK21yjzPBgAlW/5yldneUF1yxVB0IoUT9IrOuH7iSPu0k3mvzjGMn/ZeAPiQOfnGNavHXSuKT3GZCkXFlMY5hpPPljL/AF6oBKwwfxPtzjVBFKHVfigbMQpxvlgwbd+nE8I+izySriAtnZhuZjWXH4N5CF7SpgA=----ATTACHMENT:----OTM0Mzc3OTA5MzQzMDggMTc5MTYxMTU0ODI1ODY5OCA3MzM0MjEyOTIxMTI3MjAx