package cn.huge.base.common.utils;

import org.apache.commons.lang3.StringUtils;

import java.nio.ByteBuffer;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;
import java.util.UUID;

/**
 * @title: ID生成工具
 * @description: ID生成工具
 * @company: hugeinfo
 * @author: liyj
 * @time: 2021-11-05 16:51:48
 * @version: 1.0.0
 */
public class IdUtils {

    /**
     * 新建编号
     */
    public static String NEW_ID = "new";

    /**
     * 时间Id统计常量
     */
    private static int COUNT_NUM = 1000;

    /**
     * 时间Id统计常量，常量前缀
     */
    private static int SIGN_COUNT_NUM = 1000;

    /**
     * 时间Id统计常量，常量后缀
     */
    private static int COUNT_NUM_SIGN = 1000;

    /**
     * UUID随机字符串，有"-"
     * @return String
     */
    public static String uuid()
    {
        return UUID.randomUUID().toString();
    }

    /**
     * UUID随机字符串，无"-"
     * @return String
     */
    public static String uuid2()
    {
        return UUID.randomUUID().toString().replaceAll("-", "");
    }

    /**
     * UUID随机字符串
     * @return String
     */
    public static String uuid3()
    {
        long val = ByteBuffer.wrap(uuid2().getBytes()).getLong();
        return Long.toString(val, 36);
    }

    /**
     * 获取带有的时间Id，后四位随机数
     * @return String
     */
    public synchronized static String getTimeRandomId(){
        String str = (new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")).format(new Date());
        String randomNum = getRandomNum(4);
        String  timeId = str.replaceAll("-","").replaceAll(":","").replaceAll(" ","") + randomNum;
        timeId = timeId.substring(2,timeId.length());
        return timeId;
    }

    //随机产生N位数字随机数
    public static String getRandomNum(int length) { //length表示生成字符串的长度
        String base = "0123456789";
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < length; i++) {
            int number = random.nextInt(base.length());
            sb.append(base.charAt(number));
        }
        return sb.toString();
    }

    /**
     * 判断是否为新增对象编号
     */
    public static Boolean checkNewId(String id){
        if (StringUtils.isEmpty(id) || NEW_ID.equals(id)){
            return true;
        }else{
            return false;
        }
    }

    /**
     * 获取时间Id，后四位常量
     * @return String
     */
    public synchronized static String getNewTimeId(){
        String  timeId = getNowTime() + (COUNT_NUM++);
        if(COUNT_NUM > 99999){
            COUNT_NUM = 10000;
        }
        timeId=timeId.substring(2, timeId.length());
        return timeId;
    }

    /**
     * 获取时间Id，后四位常量
     * @return String
     */
    public synchronized static String getNowTime(){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
        String nowTime = sdf.format(new Date());
        return nowTime;
    }
}
/**
 * -------------------_ooOoo_-------------------
 * ------------------o8888888o------------------
 * ------------------88" . "88------------------
 * ------------------(| -_- |)------------------
 * ------------------O\  =  /O------------------
 * ---------------____/`---'\____---------------
 * -------------.'  \\|     |//  `.-------------
 * ------------/  \\|||  :  |||//  \------------
 * -----------/  _||||| -:- |||||-  \-----------
 * -----------|   | \\\  -  /// |   |-----------
 * -----------| \_|  ''\---/''  |   |-----------
 * -----------\  .-\__  `-`  ___/-. /-----------
 * ---------___`. .'  /--.--\  `. . __----------
 * ------."" '<  `.___\_<|>_/___.'  >'"".-------
 * -----| | :  `- \`.;`\ _ /`;.`/ - ` : | |-----
 * -----\  \ `-.   \_ __\ /__ _/   .-` /  /-----
 * ======`-.____`-.___\_____/___.-`____.-'======
 * -------------------`=---='
 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 * ---------佛祖保佑---hugeinfo---永无BUG----------
 */