package com.jkcredit.sysnews.util;

import com.alibaba.fastjson.JSON;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.security.core.GrantedAuthority;

import java.util.*;

public class JwtTokenUtil {

    public static String generateToken(String subject, int expirationSeconds, String salt, Collection<GrantedAuthority> authorities) {
        return Jwts.builder()
                .setSubject(subject)
                .claim("authorities", JSON.toJSONString(authorities))
                .setExpiration(new Date(System.currentTimeMillis() + expirationSeconds * 1000))
                .signWith(SignatureAlgorithm.HS512, salt) // 不使用公钥私钥
//                .signWith(SignatureAlgorithm.RS256, privateKey)
                .compact();
    }

    public static Claims parseToken(String token, String salt) {
        Claims claims = Jwts.parser()
                .setSigningKey(salt) // 不使用公钥私钥
//                    .setSigningKey(publicKey)
                .parseClaimsJws(token).getBody();
        return claims;
    }

}