OpenIsle/backend/src/main/java/com/openisle/config/CustomAccessDeniedHandler.java

package com.openisle.config;

import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.stereotype.Component;

/**
 * Returns 401 Unauthorized when an authenticated user lacks required privileges.
 */
@Component
public class CustomAccessDeniedHandler implements AccessDeniedHandler {

  @Override
  public void handle(
    HttpServletRequest request,
    HttpServletResponse response,
    AccessDeniedException accessDeniedException
  ) throws IOException, ServletException {
    response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
    response.setContentType("application/json");
    response.getWriter().write("{\"error\": \"Unauthorized\"}");
  }
}