package com.project.ding.utils;

import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;

import java.util.Optional;

public class SecurityUtils {
    /**
     * 获取当前登录用户的 ID
     */
    public static String getUserId() {
        return getAuthentication()
                .map(auth -> (String) auth.getPrincipal())
                .orElse(null);
    }

    /**
     * 获取当前认证信息
     */
    private static Optional<Authentication> getAuthentication() {
        return Optional.ofNullable(SecurityContextHolder.getContext().getAuthentication());
    }
}