package com.mailserver.config;

import com.mailserver.util.JwtUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.nio.charset.StandardCharsets;

@Configuration
public class JwtConfig {

    /** JWT_SECRET from the environment, at least 32 bytes; no default — a known key would let anyone log in. */
    @Bean
    public JwtUtils jwtUtils(@Value("${jwt.secret:}") String jwtSecret) {
        if (jwtSecret.getBytes(StandardCharsets.UTF_8).length < 32) {
            throw new IllegalStateException("jwt.secret (JWT_SECRET) must be set, at least 32 bytes");
        }
        return new JwtUtils(jwtSecret);
    }
}