package cn.lili.modules.order.cart.render.impl;
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import cn.hutool.json.JSONObject;
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import cn.hutool.json.JSONUtil;
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import cn.lili.common.enums.PromotionTypeEnum;
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import cn.lili.common.utils.CurrencyUtil;
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import cn.lili.modules.goods.entity.dos.GoodsSku;
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import cn.lili.modules.goods.service.GoodsSkuService;
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import cn.lili.modules.order.cart.entity.dto.TradeDTO;
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import cn.lili.modules.order.cart.entity.enums.RenderStepEnums;
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import cn.lili.modules.order.cart.entity.vo.CartSkuVO;
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import cn.lili.modules.order.cart.entity.vo.CartVO;
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import cn.lili.modules.order.cart.entity.vo.FullDiscountVO;
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import cn.lili.modules.order.cart.render.CartRenderStep;
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import cn.lili.modules.order.cart.render.util.PromotionPriceUtil;
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import cn.lili.modules.order.order.entity.dto.DiscountPriceItem;
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import cn.lili.modules.order.order.entity.dto.PriceDetailDTO;
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import cn.lili.modules.promotion.entity.dos.FullDiscount;
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import cn.lili.modules.promotion.entity.enums.PromotionsScopeTypeEnum;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import java.util.*;
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import java.util.stream.Collectors;
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/**
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* 满减优惠渲染
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*
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* @author Chopper
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* @since 2020-04-01 10:27 上午
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*/
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@Service
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public class FullDiscountRender implements CartRenderStep {
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@Autowired
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private GoodsSkuService goodsSkuService;
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@Override
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public RenderStepEnums step() {
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return RenderStepEnums.FULL_DISCOUNT;
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}
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@Override
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public void render(TradeDTO tradeDTO) {
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//店铺集合
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List<CartVO> cartList = tradeDTO.getCartList();
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//循环店铺购物车
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for (CartVO cart : cartList) {
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List<CartSkuVO> fullDiscountSkuList = cart.getSkuList().stream()
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.filter(i -> i.getPromotionMap() != null && !i.getPromotionMap().isEmpty() && i.getPromotionMap().keySet().stream().anyMatch(j -> j.contains(PromotionTypeEnum.FULL_DISCOUNT.name())))
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.collect(Collectors.toList());
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if (!fullDiscountSkuList.isEmpty()) {
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Optional<Map.Entry<String, Object>> fullDiscountOptional = fullDiscountSkuList.get(0).getPromotionMap().entrySet().stream().filter(i -> i.getKey().contains(PromotionTypeEnum.FULL_DISCOUNT.name())).findFirst();
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if (fullDiscountOptional.isPresent()) {
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JSONObject promotionsObj = JSONUtil.parseObj(fullDiscountOptional.get().getValue());
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FullDiscount fullDiscount = promotionsObj.toBean(FullDiscount.class);
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FullDiscountVO fullDiscountVO = new FullDiscountVO(fullDiscount);
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//如果有赠品，则将赠品信息写入
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if (Boolean.TRUE.equals(fullDiscount.getGiftFlag())) {
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GoodsSku goodsSku = goodsSkuService.getGoodsSkuByIdFromCache(fullDiscount.getGiftId());
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fullDiscountVO.setGiftSkuId(fullDiscount.getGiftId());
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fullDiscountVO.setGiftSkuName(goodsSku.getGoodsName());
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}
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//写入满减活动
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cart.setFullDiscount(fullDiscountVO);
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Map<String, Double> skuPriceDetail = new HashMap<>(16);
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for (CartSkuVO cartSkuVO : cart.getSkuList()) {
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if (PromotionsScopeTypeEnum.PORTION_GOODS.name().equals(fullDiscountVO.getScopeType()) && fullDiscountVO.getScopeId() != null && !fullDiscountVO.getScopeId().contains(cartSkuVO.getGoodsSku().getId())) {
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continue;
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}
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skuPriceDetail.put(cartSkuVO.getGoodsSku().getId(), cartSkuVO.getPriceDetailDTO().getGoodsPrice());
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}
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if (!skuPriceDetail.isEmpty()) {
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//记录参与满减活动的sku
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cart.setFullDiscountSkuIds(new ArrayList<>(skuPriceDetail.keySet()));
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Double countPrice = countPrice(skuPriceDetail);
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if (isFull(countPrice, cart)) {
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//如果减现金
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if (Boolean.TRUE.equals(fullDiscount.getFullMinusFlag())) {
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PromotionPriceUtil.recountPrice(tradeDTO, skuPriceDetail, fullDiscount.getFullMinus(), PromotionTypeEnum.FULL_DISCOUNT, fullDiscountVO.getId());
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}
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//打折
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else if (Boolean.TRUE.equals(fullDiscount.getFullRateFlag())) {
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this.renderFullRate(cart, skuPriceDetail, CurrencyUtil.div(fullDiscount.getFullRate(), 10), fullDiscountVO.getId());
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}
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//渲染满优惠
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renderFullMinus(cart);
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}
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}
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}
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}
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}
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}
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/**
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* 渲染满折
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*
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* @param cart
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* @param skuPriceDetail
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*/
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private void renderFullRate(CartVO cart, Map<String, Double> skuPriceDetail, Double rate, String activityId) {
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List<CartSkuVO> cartSkuVOS = cart.getCheckedSkuList().stream().filter(cartSkuVO -> skuPriceDetail.containsKey(cartSkuVO.getGoodsSku().getId())).collect(Collectors.toList());
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// 循环计算扣减金额
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cartSkuVOS.forEach(cartSkuVO -> {
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PriceDetailDTO priceDetailDTO = cartSkuVO.getPriceDetailDTO();
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Double discountPrice = CurrencyUtil.mul(priceDetailDTO.getGoodsPrice(),
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CurrencyUtil.sub(1, rate)
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);
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//优惠金额=旧的优惠金额+商品金额*商品折扣比例
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priceDetailDTO.setDiscountPrice(
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CurrencyUtil.add(priceDetailDTO.getDiscountPrice(), discountPrice
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)
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);
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//优惠金额=旧的优惠金额+商品金额*商品折扣比例
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priceDetailDTO.addDiscountPriceItem(DiscountPriceItem
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.builder()
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.discountPrice(discountPrice)
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.promotionTypeEnum(PromotionTypeEnum.FULL_DISCOUNT)
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.promotionId(activityId)
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.skuId(cartSkuVO.getGoodsSku().getId())
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.goodsId(cartSkuVO.getGoodsSku().getGoodsId())
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.build());
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});
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}
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/**
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* 渲染满减优惠
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*
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* @param cartVO 购物车满优惠渲染
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*/
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private void renderFullMinus(CartVO cartVO) {
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//获取参与活动的商品总价
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FullDiscountVO fullDiscount = cartVO.getFullDiscount();
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if (Boolean.TRUE.equals(fullDiscount.getCouponFlag())) {
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cartVO.getGiftCouponList().add(fullDiscount.getCouponId());
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}
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if (Boolean.TRUE.equals(fullDiscount.getGiftFlag())) {
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cartVO.setGiftList(Arrays.asList(fullDiscount.getGiftId().split(",")));
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}
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if (Boolean.TRUE.equals(fullDiscount.getPointFlag())) {
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cartVO.setGiftPoint(fullDiscount.getPoint());
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}
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//如果满足，判定是否免邮，免邮的话需要渲染一边sku
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if (Boolean.TRUE.equals(fullDiscount.getFreeFreightFlag())) {
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for (CartSkuVO skuVO : cartVO.getCheckedSkuList()) {
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skuVO.setIsFreeFreight(true);
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}
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}
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}
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/**
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* 是否满足满优惠
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*
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* @param cart 购物车展示信息
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* @return 是否满足满优惠
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*/
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private boolean isFull(Double price, CartVO cart) {
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if (cart.getFullDiscount().getFullMoney() <= price) {
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cart.setPromotionNotice("正在参与满优惠活动[" + cart.getFullDiscount().getPromotionName() + "]" + cart.getFullDiscount().notice());
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return true;
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} else {
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cart.setPromotionNotice("还差" + CurrencyUtil.sub(cart.getFullDiscount().getFullMoney(), price) + " 即可参与活动（" + cart.getFullDiscount().getPromotionName() + "）" + cart.getFullDiscount().notice());
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return false;
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}
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}
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/**
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* 统计参与满减商品价格
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*
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* @param skuPriceMap sku价格
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* @return 总价
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*/
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private Double countPrice(Map<String, Double> skuPriceMap) {
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double count = 0d;
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for (Double price : skuPriceMap.values()) {
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count = CurrencyUtil.add(count, price);
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}
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return count;
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}
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}
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