package com.sgcc.utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * 用户登录相关工具类
 *
 * @author zhaoyuanyuan
 * @version 1.0.0
 * @date 2024/06/26 17:24
 */
public class MD5Utils {

    /**
     * MD5转字符串
     *
     * @param bytes
     * @return {@code String }
     * @author zhaoyuanyuan
     * @date 2024/06/26 17:25
     */
    public static String toHexString(byte[] bytes) {
        StringBuilder hexString = new StringBuilder();
        for (byte b : bytes) {
            String hex = Integer.toHexString(0xff & b);
            if (hex.length() == 1) {
                hexString.append('0');
            }
            hexString.append(hex);
        }
        return hexString.toString();
    }

    /**
     * 密码加密
     *
     * @param password  密码
     * @return {@code String }
     * @author zhaoyuanyuan
     * @date 2024/06/26 17:25
     */
    public static String encryptPassword(String password) {
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(password.getBytes());
            byte[] digest = md.digest();
            return toHexString(digest);
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("MD5 algorithm not found", e);
        }
    }

    /**
     * 密码验证
     *
     * @param inputPassword     表单输入密码
     * @param storedPassword    数据库存储加密密码
     * @return boolean
     * @author zhaoyuanyuan
     * @date 2024/06/26 17:27
     */
    public static boolean validatePassword(String inputPassword, String storedPassword) {
        return encryptPassword(inputPassword).equals(storedPassword);
    }

}