package com.nuvole.util;
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import cn.hutool.core.convert.Convert;
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import cn.hutool.core.util.NumberUtil;
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import cn.hutool.core.util.StrUtil;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* @ClassName DiscountUtil
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* @Author cy
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* @Date 2023/5/25
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* @Description
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* @Version 1.0
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**/
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public class DiscountUtil {
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/**
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* @param totalMoney 总金额
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* @param discount 折扣
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* @return
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*/
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public static Map<String, Long> getDiscount(long totalMoney, String discount) {
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if (StrUtil.isBlank(discount)) {
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return null;
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}
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HashMap<String, Long> map = new HashMap<>();
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if ("10".equals(discount)) {
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map.put("disCountMoney", 0l);
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map.put("payMoney", totalMoney);
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return map;
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}
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Double disc = NumberUtil.div(Convert.toDouble(discount), Convert.toDouble(10)); //折扣
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//折扣优惠后应付金额
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Long payMoney = Convert.toLong(Math.ceil(NumberUtil.mul(Convert.toDouble(totalMoney), disc))); // 打折后金额（向上取整）
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// 优惠金额
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Long disCountMoney = 0l;
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if (Convert.toDouble(totalMoney) >= payMoney) {
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disCountMoney = totalMoney - payMoney;
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} else {
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disCountMoney = totalMoney;
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payMoney = 0L;
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}
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// map.put("totalMoney", totalMoney);
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map.put("disCountMoney", disCountMoney);
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map.put("payMoney", payMoney);
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return map;
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}
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}
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