package com.dsh.guns.modular.system.util;

import com.alibaba.fastjson.JSON;
import com.dsh.guns.modular.system.warpper.ParseToken;
import io.jsonwebtoken.*;

import java.nio.charset.StandardCharsets;

public class JWTTokenUtils {

    private static final String SigningKey = "Bo3XdHukD8FE62ki";

    /**
     * 解析token
     * @param token
     * @return
     */
    public static ParseToken parseToken(String token) throws TokenException {
        //解析Token，获取Claims对象
        Claims claims = null;
        try {
            claims = Jwts.parser()
                    .setSigningKey(SigningKey.getBytes(StandardCharsets.UTF_8))
                    .parseClaimsJws(token)
                    .getBody();
        }catch (SignatureException e){//解析失败
            throw new TokenException(10001, e.getMessage());
        }catch (MalformedJwtException e){//无效的token
            throw new TokenException(10002, "无效的票据");
        }catch (ExpiredJwtException e){
            throw new TokenException(10003, "票据已过期");
        }catch (Exception e){
            e.printStackTrace();
            throw new TokenException(10010, e.getMessage());
        }
        String string = JSON.toJSONString(claims);
        ParseToken parseToken = JSON.parseObject(string, ParseToken.class);
        return parseToken;
    }

}