package com.rit.canteen.sales.config;

import com.rit.canteen.sales.controller.DeveloperApiController;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.http.server.ServletServerHttpResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;
import com.fasterxml.jackson.databind.ObjectMapper;
import jakarta.servlet.http.HttpServletRequest;

@ControllerAdvice(assignableTypes = {DeveloperApiController.class})
public class DeveloperApiResponseAdvice implements ResponseBodyAdvice<Object> {

    private final ObjectMapper objectMapper = new ObjectMapper();

    @Override
    public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType,
                                  Class<? extends HttpMessageConverter<?>> selectedConverterType,
                                  ServerHttpRequest request, ServerHttpResponse response) {
        try {
            if (request instanceof ServletServerHttpRequest servletRequest) {
                HttpServletRequest httpReq = servletRequest.getServletRequest();
                if (body != null) {
                    String json = objectMapper.writeValueAsString(body);
                    httpReq.setAttribute("developer_api_response_body", json);
                }
            }
        } catch (Exception e) {
            // ignore
        }
        return body;
    }
}
