<?php

namespace Facile\JoseVerifier\Checker;

use Base64Url\Base64Url;
use Jose\Component\Checker\ClaimChecker;
use Jose\Component\Checker\InvalidClaimException;

use function hash;
use function round;
use function sprintf;
use function strlen;
use function substr;

/**
 * @internal
 */
abstract class AbstractHashChecker implements ClaimChecker
{
    /** @var string */
    private $valueToCheck;

    /** @var string */
    private $alg;

    /**
     * SHashChecker constructor.
     */
    public function __construct(string $valueToCheck, string $alg)
    {
        $this->valueToCheck = $valueToCheck;
        $this->alg = $alg;
    }

    private function getShaSize(string $alg): string
    {
        $size = substr($alg, -3);

        switch ($size) {
            case '512':
                return 'sha512';
            case '384':
                return 'sha384';
            default:
                return 'sha256';
        }
    }

    /**
     * @param mixed $value
     */
    public function checkClaim($value): void
    {
        $hash = hash($this->getShaSize($this->alg), $this->valueToCheck, true);
        $generated = Base64Url::encode(substr($hash, 0, (int) round(strlen($hash) / 2)));

        if ($value !== $generated) {
            throw new InvalidClaimException(sprintf($this->supportedClaim() . ' mismatch, expected %s, got: %s', $generated, (string) $value), $this->supportedClaim(), $value);
        }
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTY5MjAyNjkzNjI4MTcwMyA5NDAxMjIxNTQ4ODc2MzIxIDcyNTM3NzI0Mjg3ODgzNTM=