<?php

namespace VendorDuplicator\Aws\S3;

use VendorDuplicator\AWS\CRT\CRT;
use VendorDuplicator\Aws\Exception\CommonRuntimeException;
use VendorDuplicator\GuzzleHttp\Psr7;
use InvalidArgumentException;
trait CalculatesChecksumTrait
{
    private static $supportedAlgorithms = ['crc32c' => \true, 'crc32' => \true, 'sha256' => \true, 'sha1' => \true];
    /**
     * @param string $requestedAlgorithm  the algorithm to encode with
     * @param string $value               the value to be encoded
     * @return string
     */
    public static function getEncodedValue($requestedAlgorithm, $value)
    {
        $requestedAlgorithm = strtolower($requestedAlgorithm);
        $useCrt = extension_loaded('awscrt');
        if (isset(self::$supportedAlgorithms[$requestedAlgorithm])) {
            if ($useCrt) {
                $crt = new Crt();
                switch ($requestedAlgorithm) {
                    case 'crc32c':
                        return base64_encode(pack('N*', $crt::crc32c($value)));
                    case 'crc32':
                        return base64_encode(pack('N*', $crt::crc32($value)));
                    default:
                        break;
                }
            }
            if ($requestedAlgorithm === 'crc32c') {
                throw new CommonRuntimeException("crc32c is not supported for checksums " . "without use of the common runtime for php.  Please enable the CRT or choose " . "a different algorithm.");
            }
            if ($requestedAlgorithm === "crc32") {
                $requestedAlgorithm = "crc32b";
            }
            return base64_encode(Psr7\Utils::hash($value, $requestedAlgorithm, \true));
        }
        $validAlgorithms = implode(', ', array_keys(self::$supportedAlgorithms));
        throw new InvalidArgumentException("Invalid checksum requested: {$requestedAlgorithm}." . "  Valid algorithms supported by the runtime are {$validAlgorithms}.");
    }
}
