package com.gear.common.utils.jwt;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.Claim;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class JWTTokenUtils {
    public static String SECRET = "HUIYUAN-CORAL-PLATFORM";

    public static String createToken(String userId,String phone,String client) {
        String token = null;
        try {
            //签发日期
            Date iatDate = new Date();

            //过期时间
            Calendar nowTime = Calendar.getInstance();
            nowTime.add(Calendar.HOUR, 12);
            Date expirseDate = nowTime.getTime();
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("alg", "HS256");
            map.put("typ", "JWT");
            token = JWT.create()
                    .withIssuer(userId)//user实体
                    .withHeader(map)//jwt-header
                    .withClaim("userId", userId)
                    .withClaim("phone", phone)
                    .withClaim("client",client)
                    .withIssuedAt(iatDate)//设置签发时间
                    .withKeyId(userId)
                    .withExpiresAt(expirseDate)//设置过期时间
                    .sign(Algorithm.HMAC256(SECRET));//加密
        } catch (IOException e) {
            return token;
        }
        return token;
    }
    /**
     * 解密
     *
     * @param token
     * @return
     */
    public static String verifyToken(String token) throws  Exception{
            JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256(SECRET)).build();
            DecodedJWT decodedJWT = jwtVerifier.verify(token);
            String userid = decodedJWT.getIssuer();
            return userid;
    }



}