package com.reservation.demo.common.security;

import com.reservation.demo.common.exception.BusinessException;
import com.reservation.demo.common.exception.ErrorCode;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;

public final class SecurityUtils {

    private SecurityUtils() {
    }

    public static Long getCurrentUserId() {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        if (authentication == null || authentication.getPrincipal() == null) {
            throw new BusinessException(ErrorCode.UNAUTHORIZED);
        }

        return (Long) authentication.getPrincipal();
    }
}