package com.dayu.rechargeqh.utils;

import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;

/**
 * Created by zuoxiao on 2018/12/25.
 */

public class ArithUtil {

    public static double add(double v1, double v2) {
        BigDecimal b1 = new BigDecimal(Double.toString(v1));
        BigDecimal b2 = new BigDecimal(Double.toString(v2));
        return b1.add(b2).doubleValue();
    }

    public static String jiaoToYuan(String amount) {
        NumberFormat format = NumberFormat.getInstance();
        try {
            Number number = format.parse(amount);
            double temp = number.doubleValue() / 10.0;
            format.setGroupingUsed(false);
            // 设置返回的小数部分所允许的最大位数
            format.setMaximumFractionDigits(1);
            amount = format.format(temp);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return amount;
    }


    /**
     * 元转分，确保price保留两位有效数字
     *
     * @return
     */
    public static int changeY2F(double price) {
        DecimalFormat df = new DecimalFormat("#.00");
        price = Double.valueOf(df.format(price));
        int money = (int) (price * 100);
        return money;
    }

    /**
     * 分转元，转换为bigDecimal在toString
     *
     * @return
     */
    public static String changeF2Y(String price) {
        NumberFormat format = NumberFormat.getInstance();
        try {
            Number number = format.parse(price);
            double temp = number.doubleValue() / 100.0;
            format.setGroupingUsed(false);
            // 设置返回的小数部分所允许的最大位数
            format.setMaximumFractionDigits(2);
            format.setMinimumFractionDigits(2);
            price = format.format(temp);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return price;

    }

    public static void main(String[] args) {
        changeF2Y("100");
        changeY2F("25");
    }

    /**
     * 将元为单位的转换为分 替换小数点，支持以逗号区分的金额
     *
     * @param amount
     * @return
     */
    public static String changeY2F(String amount) {
        String currency = amount.replaceAll("\\$|\\￥|\\,", "");  //处理包含, ￥ 或者$的金额
        int index = currency.indexOf(".");
        int length = currency.length();
        Long amLong = 0l;
        if (index == -1) {
            amLong = Long.valueOf(currency + "00");
        } else if (length - index >= 3) {
            amLong = Long.valueOf((currency.substring(0, index + 3)).replace(".", ""));
        } else if (length - index == 2) {
            amLong = Long.valueOf((currency.substring(0, index + 2)).replace(".", "") + 0);
        } else {
            amLong = Long.valueOf((currency.substring(0, index + 1)).replace(".", "") + "00");
        }
        return amLong.toString();
    }

}