package com.nq.utils.email;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

@Service
public class CodeUtil {

    //存储时间
    private static final int EXPIRATION_TIME_IN_MINUTES = 3;
    //键名
    public static final String KEY_PREFIX ="yzm";
    @Autowired
    private StringRedisTemplate redisTemplate;
    public String generateVerificationCode() {
        // 生成6位随机数字验证码
        String code = String.valueOf((int) ((Math.random() * 9 + 1) * 100000));
        String key = KEY_PREFIX+code;
        redisTemplate.opsForValue().set(key, code, EXPIRATION_TIME_IN_MINUTES, TimeUnit.MINUTES);
        return code;
    }

    // 验证验证码是否正确
    public boolean verifyCode(String userId, String code, String key) {
        key = key + userId;
        String storedCode = redisTemplate.opsForValue().get(key);
        return code.equals(storedCode);
    }

    //删除redis中验证码
    public void deleteCode(String userId, String key) {
        key = key + userId;
        redisTemplate.delete(key);
    }

}