import { isEmpty } from '@/utils/CommonUtils';
/*
 * @Author: liqiang
 * @Date: 2020-11-27 16:12:36
 * @LastEditTime: 2021-01-06 10:01:28
 * @LastEditors: Please set LastEditors
 * @Description: 数字工具类
 * @FilePath: \ebtp-cloud-frontend\src\utils\NumberUtils.ts
 */
/**
 * 金额正则
 */
const amountReplace = /(\d)(?=(\d{3})+(?!\d))/g;

function getZero(num: number) {
    let number = '';
    for (let i = 0; i < num; i++) {
        number += '0';
    }
    return number;
}
/**
 * 数字转换金额格式
 * @param money 数字
 * @param retain 小数点后保留几位
 */
export function digitalConversionAmount(money: string, retain: number) {
    let zero = getZero(retain);
    if(isEmpty(money)){
        return money;
    }
    if (money.indexOf('.') === -1) {
        money = money.replace(amountReplace, '$1,') + '.' + zero;
    } else {
        let division = money.split('.');
        money = division[0].replace(amountReplace, '$1,');
        money = money + '.' + (division[1] + zero).substr(0, retain);
    }
    return money;
};

/**
 * 根据传入的数字保留几位小数
 * @param number 数字
 * @param retain 小数点后保留几位
 */
export function enterTheNumberToRetainTheDecimal(number:any, retain:number){
    if(isEmpty(number)){
        return number;
    }
    let index = String(number).indexOf('.');
    if(index === -1){
        return number;
    }else{
        number = String(number).substring(0, index + (retain + 1));
        return number;
    }
}