server/src/main/java/com/calorietracker/security/JwtTokenProvider.java - master - klsfv/CalorieTracker

server/src/main/java/com/calorietracker/security/JwtTokenProvider.java

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15 янв 2026, 03:19

15 янв 2026, 03:1909dece5

package com.calorietracker.security;

import io.jsonwebtoken.*;
import io.jsonwebtoken.security.Keys;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import javax.crypto.SecretKey;
import java.nio.charset.StandardCharsets;
import java.util.Date;

@Component
public class JwtTokenProvider {
    
    @Value("${jwt.secret}")
    private String jwtSecret;
    
    @Value("${jwt.expiration}")
    private long jwtExpiration;
    
    @Value("${jwt.refresh-expiration}")
    private long refreshExpiration;

    public String generateToken(String userId) {
        Date now = new Date();
        Date expiryDate = new Date(now.getTime() + jwtExpiration);
        
        SecretKey key = Keys.hmacShaKeyFor(jwtSecret.getBytes(StandardCharsets.UTF_8));
        
        return Jwts.builder()
                .subject(userId)
                .issuedAt(now)
                .expiration(expiryDate)
                .signWith(key)
                .compact();
    }

    public String generateRefreshToken(String userId) {
        Date now = new Date();
        Date expiryDate = new Date(now.getTime() + refreshExpiration);
        
        SecretKey key = Keys.hmacShaKeyFor(jwtSecret.getBytes(StandardCharsets.UTF_8));
        
        return Jwts.builder()
                .subject(userId)
                .issuedAt(now)
                .expiration(expiryDate)
                .signWith(key)
                .compact();
    }

    public String getUserIdFromToken(String token) {
        SecretKey key = Keys.hmacShaKeyFor(jwtSecret.getBytes(StandardCharsets.UTF_8));
        
        Claims claims = Jwts.parser()
                .verifyWith(key)
                .build()
                .parseSignedClaims(token)
                .getPayload();
        
        return claims.getSubject();
    }

    public boolean validateToken(String token) {
        try {
            SecretKey key = Keys.hmacShaKeyFor(jwtSecret.getBytes(StandardCharsets.UTF_8));
            Jwts.parser()
                    .verifyWith(key)
                    .build()
                    .parseSignedClaims(token);
            return true;
        } catch (JwtException | IllegalArgumentException e) {
            return false;
        }
    }
}