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package com.terra.proxy.util;
 
import com.alibaba.fastjson.JSONObject;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
 
import java.util.Date;
 
/**
 * @author lanbase
 * @Description: TODO(jwt工具类)
 * @date 2017-9-27 14:33
 */
@ConfigurationProperties(prefix = "sys.jwt")
@Component
public class JwtUtils {
 
    private Logger logger = LoggerFactory.getLogger(getClass());
 
    private String secret;
 
    private long expire;
 
    private String header;
 
    private String appidtokentime;
 
 
    /**
     * 生成jwt token
     *
     * @param userId
     * @return
     */
 
 
    public String generateToken(long userId) {
        Date nowDate = new Date();
        //过期时间
        Date expireDate = new Date(nowDate.getTime() + expire * 1000);
 
        return Jwts.builder()
                .setHeaderParam("type", "JWT")
                .setSubject(userId + "")
                .setIssuedAt(nowDate)
                .setExpiration(expireDate)
                .signWith(SignatureAlgorithm.HS512, secret)
                .compact();
    }
 
    public String generateToken(String msg, Long expireSeconds) {
        Date nowDate = new Date();
        //过期时间
        Date expireDate = new Date(nowDate.getTime() + expire * 1000);
        if (expireSeconds != null) {
            expireDate = new Date(nowDate.getTime() + expireSeconds.longValue() * 1000);
        }
 
        return Jwts.builder()
                .setHeaderParam("type", "JWT")
                .setSubject(msg)
                .setIssuedAt(nowDate)
                .setExpiration(expireDate)
                .signWith(SignatureAlgorithm.HS512, secret)
                .compact();
    }
 
 
    public String generateToken(Long expireSeconds, Integer appId) {
        if (expireSeconds == null) {
            //根据appid,获取对应的token有效持续时间
            JSONObject appmap = JSONObject.parseObject(appidtokentime);
            expireSeconds = appmap.getLongValue(appId.toString());
        }
        Date nowDate = new Date();
        //过期时间
        Date expireDate = new Date(nowDate.getTime() + expire * 1000);
        if (expireSeconds != null) {
            expireDate = new Date(nowDate.getTime() + expireSeconds.longValue() * 1000);
        }
 
        return Jwts.builder()
                .setHeaderParam("type", "JWT")
                .setSubject(appId.toString())
                .setIssuedAt(nowDate)
                .setExpiration(expireDate)
                .signWith(SignatureAlgorithm.HS512, secret)
                .compact();
    }
 
 
    public String generateToken(Integer userid, Long expireSeconds) {
        Date nowDate = new Date();
        //过期时间
        Date expireDate = new Date(nowDate.getTime() + expire * 1000);
        if (expireSeconds != null) {
            expireDate = new Date(nowDate.getTime() + expireSeconds.longValue() * 1000);
        }
 
        return Jwts.builder()
                .setHeaderParam("type", "JWT")
                .setSubject(userid.toString())
                .setIssuedAt(nowDate)
                .setExpiration(expireDate)
                .signWith(SignatureAlgorithm.HS512, secret)
                .compact();
    }
 
    public Claims getClaimByToken(String token) {
        try {
            return Jwts.parser()
                    .setSigningKey(secret)
                    .parseClaimsJws(token)
                    .getBody();
        } catch (Exception e) {
            return null;
        }
    }
 
 
    /**
     * token是否过期
     *
     * @param expiration
     * @return
     */
    public boolean isTokenExpired(Date expiration) {
        return expiration.before(new Date());
    }
 
    public String getSecret() {
        return secret;
    }
 
    public void setSecret(String secret) {
        this.secret = secret;
    }
 
    public long getExpire() {
        return expire;
    }
 
    public void setExpire(long expire) {
        this.expire = expire;
    }
 
    public String getHeader() {
        return header;
    }
 
    public void setHeader(String header) {
        this.header = header;
    }
 
}