sweater-java/src/main/java/org/example/sweater/controller/SessionInterceptor.java

package org.example.sweater.controller;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.example.sweater.domain.User;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import java.security.Principal;

@Component
public class SessionInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Principal principal = request.getUserPrincipal();
        if (principal != null) {
            Authentication authentication = (Authentication) principal;
            User user = (User) authentication.getPrincipal();
            request.setAttribute("user", user);
        }

        return true;
    }
}