package cc.mrbird.febs.common.utils;

import cn.hutool.core.util.StrUtil;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

/**
 * @author wzy
 * @date 2021-09-22
 **/
public class MallUtils {

    public static String getRandomNum(int length) {
        String str = "0123456789";
        Random random = new Random();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < length; ++i) {
            int number = random.nextInt(str.length());
            sb.append(str.charAt(number));
        }

        return sb.toString();
    }

    public static String getOrderNum(String prefix) {
        SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
        String dd=df.format(new Date());
        if (StrUtil.isNotBlank(prefix)) {
            return prefix+dd+getRandomNum(5);
        }
        return dd+getRandomNum(5);
    }

    public static String getOrderNum() {
        return getOrderNum(null);
    }
}