package cn.iocoder.yudao.module.trade.service.price.calculator;
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import cn.hutool.core.lang.Assert;
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import cn.hutool.core.util.StrUtil;
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import cn.iocoder.yudao.module.promotion.api.combination.CombinationRecordApi;
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import cn.iocoder.yudao.module.promotion.api.combination.dto.CombinationValidateJoinRespDTO;
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import cn.iocoder.yudao.module.promotion.enums.common.PromotionTypeEnum;
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import cn.iocoder.yudao.module.trade.service.price.bo.TradePriceCalculateReqBO;
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import cn.iocoder.yudao.module.trade.service.price.bo.TradePriceCalculateRespBO;
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import org.springframework.core.annotation.Order;
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import org.springframework.stereotype.Component;
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import jakarta.annotation.Resource;
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// TODO @puhui999：单测可以后补下
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/**
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* 拼团活动的 {@link TradePriceCalculator} 实现类
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*
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* @author HUIHUI
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*/
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@Component
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@Order(TradePriceCalculator.ORDER_COMBINATION_ACTIVITY)
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public class TradeCombinationActivityPriceCalculator implements TradePriceCalculator {
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@Resource
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private CombinationRecordApi combinationRecordApi;
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@Override
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public void calculate(TradePriceCalculateReqBO param, TradePriceCalculateRespBO result) {
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// 1. 判断订单类型和是否具有拼团活动编号
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if (param.getCombinationActivityId() == null) {
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return;
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}
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Assert.isTrue(param.getItems().size() == 1, "拼团时，只允许选择一个商品");
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// 2. 校验是否可以参与拼团
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TradePriceCalculateRespBO.OrderItem orderItem = result.getItems().get(0);
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CombinationValidateJoinRespDTO combinationActivity = combinationRecordApi.validateJoinCombination(
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param.getUserId(), param.getCombinationActivityId(), param.getCombinationHeadId(),
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orderItem.getSkuId(), orderItem.getCount());
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// 3.1 记录优惠明细
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Integer discountPrice = orderItem.getPayPrice() - combinationActivity.getCombinationPrice() * orderItem.getCount();
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TradePriceCalculatorHelper.addPromotion(result, orderItem,
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param.getCombinationActivityId(), combinationActivity.getName(), PromotionTypeEnum.COMBINATION_ACTIVITY.getType(),
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StrUtil.format("拼团活动：省 {} 元", TradePriceCalculatorHelper.formatPrice(discountPrice)),
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discountPrice);
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// 3.2 更新 SKU 优惠金额
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orderItem.setDiscountPrice(orderItem.getDiscountPrice() + discountPrice);
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TradePriceCalculatorHelper.recountPayPrice(orderItem);
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TradePriceCalculatorHelper.recountAllPrice(result);
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}
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}
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