1.优惠券使用增加订单金额判断

陶杰

2024-09-04 0d54ea0de440786f0614870b8c556fba5515a205

 src/main/java/com/mzl/flower/service/impl/coupon/CouponRecordServiceImpl.java

@@ -1,6 +1,7 @@
package com.mzl.flower.service.impl.coupon;

import cn.hutool.core.util.IdUtil;
import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
@@ -29,6 +30,7 @@
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.temporal.TemporalAdjusters;
import java.util.List;
@@ -62,7 +64,6 @@

    @Autowired
    private CustomerService customerService;



    @Override
@@ -249,6 +250,7 @@
    public boolean grantVipCouponRecordList() {

        try{

            LocalDateTime now = LocalDateTime.now();
            LocalDateTime firstDayStart = now.with(TemporalAdjusters.firstDayOfMonth()).withHour(0).withMinute(0).withSecond(0).withNano(0);
            LocalDateTime lastDayEnd = now.with(TemporalAdjusters.lastDayOfMonth()).withHour(23).withMinute(59).withSecond(59).withNano(0);
@@ -291,6 +293,9 @@
                couponTemplateDO.setGetStartDate(firstDayStart);
                couponTemplateDO.setGetEndDate(lastDayEnd);

                // 设置总数为当前会员的人数
                couponTemplateDO.setCouponAmount(CollectionUtils.isNotEmpty(customerList)?customerList.size():0);

                // 设置默认类型固定
                couponTemplateDO.setUsageType(CouponUsageTypeEnum.FIXED.getType());

@@ -310,7 +315,7 @@
    }

    @Override
    public boolean expiredCouponRecordByListCurMonth() {
    public boolean expiredCouponRecordLastMon() {

        try{
            LocalDateTime now = LocalDateTime.now();
@@ -424,4 +429,99 @@
        return  baseMapper.selectCount(queryWrapper)>0;

    }

    @Transactional
    @Override
    public boolean useCoupon(String couponId, String orderId, BigDecimal orderMount) {
        // 优惠券为空
        if(StringUtils.isBlank(couponId)){
            throw new IllegalArgumentException("无效的优惠券");
        }
        if(StringUtils.isBlank(orderId)){
            throw new IllegalArgumentException("订单id不能为空");
        }
        if(orderMount.compareTo(BigDecimal.ZERO)<=0){
            throw new IllegalArgumentException("订单金额不能小于0");
        }

        // 验证优惠券存在且有效
        final CouponRecordDO couponRecordDO = baseMapper.selectById(couponId);
        if(null==couponRecordDO || StringUtils.isNotBlank(couponRecordDO.getOrderId()) ){
            throw new IllegalArgumentException("无效的优惠券");
        }

        if(couponRecordDO.getStatus().equals(CouponUsedStatusEnum.USED.getType())){
            throw new IllegalArgumentException("优惠券已经被使用");
        }
        if(couponRecordDO.getStatus().equals(CouponUsedStatusEnum.EXPIRED.getType()) || LocalDateTime.now().isAfter(couponRecordDO.getEffectiveEnd())){
            throw new IllegalArgumentException("优惠券已过期");
        }

        // 根据类型判断是无门槛还是满减，如果是无门槛
        if(couponRecordDO.getCouponDiscountType().equals(CouponTypeEnum.ZERO.getType())){
            // 无门槛，查看金额是否大于满减值
            if(orderMount.compareTo(couponRecordDO.getCouponDiscountValue())<0){
                throw new IllegalArgumentException(String.format("订单金额(%s)小于无门槛的金额(%s)", orderMount, couponRecordDO.getCouponDiscountValue()));
            }
        }

        if(couponRecordDO.getCouponDiscountType().equals(CouponTypeEnum.DISCOUNT.getType())){
            //满减，查看金额是否满足最小订单额
            if(orderMount.compareTo(couponRecordDO.getMinOrderAmount())<0){
                throw new IllegalArgumentException(String.format("订单金额(%s)小于最低折扣订单金额(%s)", orderMount, couponRecordDO.getMinOrderAmount()));
            }

            if(orderMount.compareTo(couponRecordDO.getCouponDiscountValue())<0){
                throw new IllegalArgumentException(String.format("订单金额(%s)小于折扣的金额(%s)", orderMount, couponRecordDO.getCouponDiscountValue()));
            }
        }

        // 查看当前的优惠券是否是当前人员的
        if(!SecurityUtils.getUserId().equals(couponRecordDO.getUserId())){
            throw new IllegalArgumentException("优惠券不属于当前人员");
        }

        // 优惠券使用操作
        couponRecordDO.setStatus(CouponUsedStatusEnum.USED.getType());
        couponRecordDO.setUsedTime(LocalDateTime.now());
        couponRecordDO.setOrderId(orderId);

        return baseMapper.updateById(couponRecordDO)>0;

    }


    @Transactional
    @Override
    public boolean cancelCouponUsage(String orderId) {
        // 查询订单使用的优惠券
        final CouponRecordDO couponRecordDO = getCouponByOrderId(orderId);
        if(null==couponRecordDO){
            throw new IllegalArgumentException("优惠券不存在，无法操作");
        }
        log.info("优惠券退回之前："+ JSON.toJSONString(couponRecordDO));
        couponRecordDO.setStatus(CouponUsedStatusEnum.UNUSED.getType());
        couponRecordDO.setUsedTime(null);
        couponRecordDO.setOrderId(null);
        log.info("优惠券退回之后："+ JSON.toJSONString(couponRecordDO));
        return baseMapper.updateById(couponRecordDO)>0;
    }

    @Override
    public List<CouponRecordDO> getCouponListByOrderId(String orderId) {
        QueryWrapper<CouponRecordDO> queryWrapper=new QueryWrapper<>();
        queryWrapper.lambda().eq(CouponRecordDO::getDeleted,TrueOrFalseEnum.FALSE.isFlag())
                .eq(CouponRecordDO::getOrderId,orderId);

        return baseMapper.selectList(queryWrapper);
    }

    @Override
    public CouponRecordDO getCouponByOrderId(String orderId) {
        final List<CouponRecordDO> couponRecordDOList = getCouponListByOrderId(orderId);
        if(CollectionUtils.isNotEmpty(couponRecordDOList)){
            return couponRecordDOList.get(0);
        }
        return null;
    }
}