class OrderedTimeCodec

class OrderedTimeCodec extends StringCodec {
    
    /**
     * Returns a binary string representation of a UUID, with the timestamp
     * fields rearranged for optimized storage
     *
     * @inheritDoc
     * @psalm-return non-empty-string
     * @psalm-suppress MoreSpecificReturnType we know that the retrieved `string` is never empty
     * @psalm-suppress LessSpecificReturnStatement we know that the retrieved `string` is never empty
     */
    public function encodeBinary(UuidInterface $uuid) : string {
        if (!$uuid->getFields() instanceof Rfc4122FieldsInterface || $uuid->getFields()
            ->getVersion() !== Uuid::UUID_TYPE_TIME) {
            throw new InvalidArgumentException('Expected RFC 4122 version 1 (time-based) UUID');
        }
        $bytes = $uuid->getFields()
            ->getBytes();
        
        /** @phpstan-ignore-next-line PHPStan complains that this is not a non-empty-string. */
        return $bytes[6] . $bytes[7] . $bytes[4] . $bytes[5] . $bytes[0] . $bytes[1] . $bytes[2] . $bytes[3] . substr($bytes, 8);
    }
    
    /**
     * Returns a UuidInterface derived from an ordered-time binary string
     * representation
     *
     * @throws InvalidArgumentException if $bytes is an invalid length
     *
     * @inheritDoc
     */
    public function decodeBytes(string $bytes) : UuidInterface {
        if (strlen($bytes) !== 16) {
            throw new InvalidArgumentException('$bytes string should contain 16 characters.');
        }
        // Rearrange the bytes to their original order.
        $rearrangedBytes = $bytes[4] . $bytes[5] . $bytes[6] . $bytes[7] . $bytes[2] . $bytes[3] . $bytes[0] . $bytes[1] . substr($bytes, 8);
        $uuid = parent::decodeBytes($rearrangedBytes);
        if (!$uuid->getFields() instanceof Rfc4122FieldsInterface || $uuid->getFields()
            ->getVersion() !== Uuid::UUID_TYPE_TIME) {
            throw new UnsupportedOperationException('Attempting to decode a non-time-based UUID using ' . 'OrderedTimeCodec');
        }
        return $uuid;
    }

}