<?php
declare(strict_types=1);
namespace UploadLogger\Core\Services;

use UploadLogger\Core\Config;

final class HashService
{
    private Config $config;

    public function __construct(?Config $config = null)
    {
        $this->config = $config ?? new Config(['modules' => []]);
    }

    /**
     * @param string $tmpPath
     * @param int $size
     * @return array<string,string>
     */
    public function computeHashes(string $tmpPath, int $size): array
    {
        $max = (int)$this->config->get('limits.hash_max_filesize', 10 * 1024 * 1024);

        if (!is_uploaded_file($tmpPath)) return [];
        if ($size <= 0 || $size > $max) return [];

        $sha1 = @hash_file('sha1', $tmpPath);
        $md5 = @hash_file('md5', $tmpPath);

        $out = [];
        if (is_string($sha1)) $out['sha1'] = $sha1;
        if (is_string($md5)) $out['md5'] = $md5;

        return $out;
    }
}