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<?php

declare(strict_types=1);

namespace Laminas\Mail\Protocol\Xoauth2;

use function base64_encode;
use function chr;
use function sprintf;

/**
 * @internal
 */
final class Xoauth2
{
    /**
     * encodes accessToken and target mailbox to Xoauth2 SASL base64 encoded string
     */
    public static function encodeXoauth2Sasl(string $targetMailbox, string $accessToken): string
    {
        return base64_encode(
            sprintf(
                "user=%s%sauth=Bearer %s%s%s",
                $targetMailbox,
                chr(0x01),
                $accessToken,
                chr(0x01),
                chr(0x01)
            )
        );
    }
}