GlobalExceptionHandler.java

package flipnote.user.global.error;

import flipnote.user.global.exception.BizException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.MissingRequestCookieException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.List;

@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(BizException.class)
    public ResponseEntity<ApiResponse<Void>> handleBizException(BizException e) {
        log.warn("BizException: code={}, status={}, message={}",
            e.getErrorCode().getCode(),
            e.getErrorCode().getStatus(),
            e.getErrorCode().getMessage()
        );
        return ResponseEntity.status(e.getErrorCode().getStatus()).body(ApiResponse.error(e.getErrorCode()));
    }

    @ExceptionHandler(MissingRequestCookieException.class)
    public ResponseEntity<ApiResponse<Void>> handleMissingCookie(MissingRequestCookieException e) {
        ApiResponse<Void> response = ApiResponse.<Void>builder()
                .status(HttpStatus.BAD_REQUEST.value())
                .code("MISSING_COOKIE")
                .message("필수 쿠키가 누락되었습니다.")
                .build();
        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(response);
    }

    @ExceptionHandler(MethodArgumentNotValidException.class)
    public ResponseEntity<ApiResponse<List<ApiResponse.FieldError>>> handleValidationException(MethodArgumentNotValidException e) {
        return ResponseEntity.badRequest().body(ApiResponse.validationError(e.getBindingResult()));
    }

    @ExceptionHandler(Exception.class)
    public ResponseEntity<ApiResponse<Void>> handleException(Exception e) {
        log.error("Unhandled exception", e);
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(ApiResponse.internalError());
    }
}