import { isEmpty } from '@/utils/CommonUtils';
/*
 * @Author: liqiang
 * @Date: 2020-11-27 16:12:36
 * @LastEditTime: 2021-03-30 15:52:01
 * @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;
    }
}

/**
 * 加法 两个数相加
 * @param arg1 
 * @param arg2 
 * @returns 
 */
export function algebraicAddition(arg1: number, arg2: number) {
    let r1, r2, m, c;
  try {
    r1 = arg1.toString().split(".")[1].length;
  }
  catch (e) {
    r1 = 0;
  }
  try {
    r2 = arg2.toString().split(".")[1].length;
  }
  catch (e) {
    r2 = 0;
  }
  c = Math.abs(r1 - r2);
  m = Math.pow(10, Math.max(r1, r2));
  if (c > 0) {
    let cm = Math.pow(10, c);
    if (r1 > r2) {
      arg1 = Number(arg1.toString().replace(".", ""));
      arg2 = Number(arg2.toString().replace(".", "")) * cm;
    } else {
      arg1 = Number(arg1.toString().replace(".", "")) * cm;
      arg2 = Number(arg2.toString().replace(".", ""));
    }
  } else {
    arg1 = Number(arg1.toString().replace(".", ""));
    arg2 = Number(arg2.toString().replace(".", ""));
  }
  return (arg1 + arg2) / m;
}