public class ResponseResolver {

    private final static Map<ErrorCode, HttpStatus> HTTP_STATUS_MAP =
            HashMap.of(
                    ErrorCode.USER_NOT_FOUND, HttpStatus.NOT_FOUND,
                    ErrorCode.USER_EMPTY_REQUIRED_DATA, HttpStatus.BAD_REQUEST
            );

    public <T> ResponseEntity<Object> resolve(Either<? extends AppError, T> either) {
        return either
                .map(this::createObject)
                .getOrElseGet(this::createError);
    }

    private ResponseEntity<Object> createObject(Object object) {
        return new ResponseEntity<>(object, HttpStatus.OK);
    }

    private ResponseEntity<Object> createError(AppError error) {
        return new ResponseEntity<>(error, HTTP_STATUS_MAP.getOrElse(error.getErrorCode(), HttpStatus.BAD_REQUEST));
    }

}