import javax.servlet.http.HttpServletRequest;

import org.springframework.core.MethodParameter;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;

import lombok.extern.slf4j.Slf4j;
import summer.webserver.util.SummerUtils;

@Slf4j
public class SummerArgumentResolver implements HandlerMethodArgumentResolver {

	public SummerArgumentResolver() {
		super();
	}

	@Override
	public boolean supportsParameter(MethodParameter parameter) {
		return SummerHeader.class.isAssignableFrom(parameter.getParameterType());
	}

	@Override
	public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
		NativeWebRequest webRequest, WebDataBinderFactory binderFactory) {
		return SummerUtils.getSummerHeader(webRequest.getNativeRequest(HttpServletRequest.class));
	}
}

@Slf4j
public class SummerUtils {
	public static SummerHeader getSummerHeader(HttpServletRequest request) {
		User user = (User)request.getAttribute("user");
		String userName = Objects.isNull(user) ? request.getHeader(USER_NAME) : user.getUserName();
		String userId = Objects.isNull(user) ? request.getHeader(USER_ID) : user.getUserId();
		SummerHeader summerHeader = SummerHeader.builder()
			.userName(userName)
			.userId(userId)
			.build();

		if (log.isDebugEnabled()) {
			log.debug(summerHeader.toString());
		}
		request.setAttribute("summerHeader", summerHeader);
		return summerHeader;
	}
}

@Api(tags = "User")
@RestController()
@RequestMapping(ROOT_DOMAIN + "/users")
@Slf4j
public class UserController {
	@ApiOperation(value = "delete user")
	@DeleteMapping("/{user-id}")
	@ResponseStatus(HttpStatus.OK)
	public void deleteUser(SummerHeader summerHeader,
		@ApiParam(required = true) @Length(max = 10) @PathVariable(value = "user-id") String userId) {
		userMapper.deleteById(userId);
	}
}