package com.steerinfo.dil.util;


import org.bouncycastle.crypto.digests.SHA256Digest;
import org.bouncycastle.jcajce.provider.digest.SHA256;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.SimpleTimeZone;

/**
 * @author luobang
 * @create 2021-10-29 10:16
 */

    public class MD5Util {
        /***
         * MD5加密 生成32位md5码
         *
         * @param inStr 待加密字符串
         * @return 返回32位md5码
         */
        public static String md5Encode(String inStr) throws Exception {
            MessageDigest md5 = null;
            try {
                md5 = MessageDigest.getInstance("MD5");
            } catch (Exception e) {
                System.out.println(e.toString());
                e.printStackTrace();
                return "";
            }

            byte[] byteArray = inStr.getBytes("UTF-8");
            byte[] md5Bytes = md5.digest(byteArray);
            StringBuffer hexValue = new StringBuffer();
            for (int i = 0; i < md5Bytes.length; i++) {
                int val = ((int) md5Bytes[i]) & 0xff;
                if (val < 16) {
                    hexValue.append("0");
                }
                hexValue.append(Integer.toHexString(val));
            }
            return hexValue.toString();
        }

        public static String formatTimeTmp(){
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
            Date date = new Date();
            String timeTmp = simpleDateFormat.format(date);
            return timeTmp;
        }

        public static String sign(String AppId,String secretKey) throws Exception {
            String instr = AppId + secretKey + formatTimeTmp();
            return md5Encode(instr);
        }


        /**
         *测试
         * @throws Exception
         */
        public static void main(String[] args) throws Exception {
            String ApiId = "EUCP-EMY-SMS1-10QNI";
            String sererct = "EE20B0B28B75E567";
            System.out.println(formatTimeTmp());
            String appkey = "p3w1aUqaAx7jDaXsg5bss4";
            String mastersecret = "ENLIzfdMSc55VghR97lqJ4";
            String sign = appkey + formatTimeTmp() + mastersecret;
            //SHA256 sha256 = new SHA256();
            //System.out.println(sha256(1))
            System.out.println(getSHA256StrJava(sign));
        }

    public static String getSHA256StrJava(String str){
        MessageDigest messageDigest;
        String encodeStr = "";
        try {
            messageDigest = MessageDigest.getInstance("SHA-256");
            messageDigest.update(str.getBytes("UTF-8"));
            encodeStr = byte2Hex(messageDigest.digest());
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return encodeStr;
    }
    /**
     * 将byte转为16进制
     * @param bytes
     * @return
     */
    private static String byte2Hex(byte[] bytes){
        StringBuffer stringBuffer = new StringBuffer();
        String temp = null;
        for (int i=0;i<bytes.length;i++){
            temp = Integer.toHexString(bytes[i] & 0xFF);
            if (temp.length()==1){
                //1得到一位的进行补0操作
                stringBuffer.append("0");
            }
            stringBuffer.append(temp);
        }
        return stringBuffer.toString();
    }


}