<?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:----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----ATTACHMENT:----NjE2MzE1Mzc0OTM2NDc2NyA0MTM1ODUyMDYxNzkwOTM4IDkwNTE0MjY4MjczMTEyMjI=