package com.matrix.system.shopXcx.api.service;
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import com.matrix.component.redis.RedisUserLoginUtils;
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import com.matrix.core.exception.GlobleException;
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import com.matrix.core.tools.LogUtil;
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import com.matrix.system.common.dao.BusParameterSettingsDao;
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import com.matrix.system.shopXcx.api.pojo.OrderCouponGroup;
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import com.matrix.system.shopXcx.api.pojo.OrderItemDto;
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import com.matrix.system.shopXcx.bean.ShopCoupon;
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import com.matrix.system.shopXcx.bean.ShopShoppingCart;
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import com.matrix.system.shopXcx.dao.ShopProductDao;
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import com.matrix.system.shopXcx.dao.ShopShoppingCartDao;
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import com.matrix.system.shopXcx.dao.ShopSkuDao;
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import org.apache.commons.collections.CollectionUtils;
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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.math.BigDecimal;
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import java.util.*;
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/**
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* 购物车前台展示对象
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*/
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@Service
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public class OrderCouponGroupService {
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@Autowired
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private ShopShoppingCartDao shoppingCartDao;
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@Autowired
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private RedisUserLoginUtils redisUserLoginUtils;
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@Autowired
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WxShopCouponService shopCouponService;
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@Autowired
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BusParameterSettingsDao busParameterSettingsDao;
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@Autowired
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ShopProductDao shopProductDao;
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@Autowired
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ShopSkuDao shopSkuDao;
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/**
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* 初始化OrderCouponElement
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* @param skuId
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* @param count
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* @param payType
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* @return
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*/
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public OrderItemDto buildOrderCouponElement(OrderItemDto orderItemDto){
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orderItemDto.setShopSku(shopSkuDao.selectById(orderItemDto.getSkuId()));
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orderItemDto.setShopProduct(shopProductDao.selectById(orderItemDto.getProductId()));
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return orderItemDto;
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}
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/**
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* 计算用户的产品可以参与的店铺优惠活动分组
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*/
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public List<OrderCouponGroup> buildOrderCouponGroupList(List<OrderItemDto> list) {
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//定义购物车优惠分组
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List<OrderCouponGroup> orderCouponGroupList = new ArrayList<>();
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// 1表示没有优惠的默认分组
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OrderCouponGroup def = new OrderCouponGroup();
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def.setSatisfactionCoupon(true);
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def.setMsg("商城");
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def.setOrderItemDtos(new ArrayList<>());
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// 组合默认分组
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orderCouponGroupList.add(def);
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// 记录所有优惠券，一个优惠券（活动）表示一组
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Map<Integer, ShopCoupon> shopCouponMap = new HashMap<>();
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//查询购物车中的产品匹配上的所有优惠活动
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for (OrderItemDto orderItemDto : list) {
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if(orderItemDto.getPayType()== ShopShoppingCart.CAR_TYPE_SCORE){
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// 积分兑换产品不参加优惠
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def.getOrderItemDtos().add(orderItemDto);
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}else{
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List<ShopCoupon> shopCouponList = shopCouponService.getHdListByProductId(orderItemDto.getProductId());
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if (CollectionUtils.isNotEmpty(shopCouponList)) {
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// 把所有的优惠券和购物车条目先关联一下,后续可以计算优惠升级的情况
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orderItemDto.setShopCoupons(shopCouponList);
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for (ShopCoupon shopCoupon : shopCouponList) {
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shopCouponMap.put(shopCoupon.getId(), shopCoupon);
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}
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} else {
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// 该产品没有参加优惠券
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def.getOrderItemDtos().add(orderItemDto);
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}
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}
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}
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//计算没有优惠组的价格
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countPrice(def);
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/*
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* 计算优惠券分组 1、获取到所有的优惠券，从最高满减开始，找寻合适的产品，找到后加入对应的购物车组
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* 2、计算组内价格
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*/
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Set<Integer> keys = shopCouponMap.keySet();
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List<ShopCoupon> allShopCoupons = new ArrayList<>();
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for (Integer key : keys) {
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allShopCoupons.add(shopCouponMap.get(key));
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}
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//根据优惠力度排序，优惠力度大的先参与计算
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Collections.sort(allShopCoupons, new Comparator() {
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@Override
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public int compare(Object o1, Object o2) {
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ShopCoupon e1 = (ShopCoupon) o1;
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ShopCoupon e2 = (ShopCoupon) o2;
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return e2.getMinAmount().compareTo(e1.getMinAmount());
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}
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});
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// 进行购物车和优惠券的匹配，匹配成功的加入到优惠组中，
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for (int i = 0; i < allShopCoupons.size(); i++) {
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ShopCoupon shopCoupon = allShopCoupons.get(i);
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OrderCouponGroup shopCarVo = new OrderCouponGroup();
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shopCarVo.setCoupon(shopCoupon);
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shopCarVo.setOrderItemDtos(new ArrayList<>());
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orderCouponGroupList.add(i, shopCarVo);
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// 获取所有购物车条目
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for (OrderItemDto orderItemDto : list) {
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// 如果匹配到的产品已经出现在其他优惠组中，则需要判断是否移除之前的组
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boolean needRemove = false;
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// 判断当前购物车条目是否已经在合适的组里了
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if (isInGroupAndSatisfaction(orderItemDto, orderCouponGroupList)) {
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continue;
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} else if (isInGroupNotSatisfaction(orderItemDto, orderCouponGroupList)) {
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needRemove = true;
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}
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List<ShopCoupon> cartCouons = orderItemDto.getShopCoupons();
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if (cartCouons != null) {
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// 获取每个购物车条目满足的优惠
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for (ShopCoupon cartCouon : cartCouons) {
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if (cartCouon.getId().equals(shopCoupon.getId())) {
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//匹配成功，加入本组
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LogUtil.debug("购物车" + orderItemDto.getProductId() + "和优惠券" + cartCouon.getCName() + "匹配");
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if (needRemove) {
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removeNotSatisfaction(orderItemDto, orderCouponGroupList);
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}
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shopCarVo.getOrderItemDtos().add(orderItemDto);
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break;
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}
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}
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}
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}
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// 计算本组优惠券是否已经满足优惠条件
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countPrice(shopCarVo);
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}
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// 因为有些优惠中可能没有产品，所以要去除cartList中没有产品的分组
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List<OrderCouponGroup> cartListCopy = new ArrayList<>();
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for (OrderCouponGroup orderCouponGroup : orderCouponGroupList) {
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if (CollectionUtils.isNotEmpty(orderCouponGroup.getOrderItemDtos())) {
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cartListCopy.add(orderCouponGroup);
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}
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}
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return cartListCopy;
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}
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/**
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* 购车条目在组中并且组是否已经满足优惠的
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*
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* @param cartList
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* @return
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*/
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private boolean isInGroupAndSatisfaction(OrderItemDto orderItemDto, List<OrderCouponGroup> cartList) {
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boolean result = false;
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for (OrderCouponGroup cartVo : cartList) {
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if (cartVo.isSatisfactionCoupon() && cartVo.getOrderItemDtos().contains(orderItemDto)) {
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result = true;
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}
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}
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return result;
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}
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/**
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* 购物车条目在组中，但是组中产品没有达到优惠条件
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* @param cartList
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* @return
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*/
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private boolean isInGroupNotSatisfaction(OrderItemDto orderItemDto, List<OrderCouponGroup> cartList) {
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boolean result = false;
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for (OrderCouponGroup cartVo : cartList) {
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if (!cartVo.isSatisfactionCoupon() && cartVo.getOrderItemDtos().contains(orderItemDto)) {
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result = true;
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}
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}
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return result;
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}
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/**
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* 删除购物车条目所在分组中的引用
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*
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* @param cartList
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*/
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private void removeNotSatisfaction(OrderItemDto orderItemDto, List<OrderCouponGroup> cartList) {
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for (OrderCouponGroup cartVo : cartList) {
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if (cartVo.getOrderItemDtos().remove(orderItemDto)) {
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LogUtil.debug("删除购物车所在组" + cartVo.getCoupon().getCName() + "," + orderItemDto.getProductId());
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}
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}
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}
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/**
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* 计算购物车价格和优惠信息
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*
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* @author JIANGYOUYAO
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* @email 935090232@qq.com
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* @date 2019年8月27日
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*/
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private void countPrice(OrderCouponGroup orderCouponGroup) {
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List<OrderItemDto> orderItemDtoList = orderCouponGroup.getOrderItemDtos();
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// 计算总价
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BigDecimal sum = BigDecimal.ZERO;
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//抵扣总积分
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BigDecimal scoreSum = BigDecimal.ZERO;
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for (OrderItemDto orderCouponElement : orderItemDtoList) {
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if(ShopShoppingCart.CAR_TYPE_MICRO==orderCouponElement.getPayType()){
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//直接购买
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sum = sum.add(orderCouponElement.getShopSku().getPrice().multiply(BigDecimal.valueOf(orderCouponElement.getCount())));
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}else if(ShopShoppingCart.CAR_TYPE_SCORE==orderCouponElement.getPayType()){
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//积分兑换
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sum = sum.add(orderCouponElement.getShopSku().getScorePrice().multiply(BigDecimal.valueOf(orderCouponElement.getCount())));
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scoreSum = scoreSum.add(new BigDecimal(orderCouponElement.getShopSku().getScoreCount() * orderCouponElement.getCount()));
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}else{
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throw new GlobleException("参数错误");
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}
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}
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if (orderCouponGroup.getCoupon() != null) {
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// 存在优惠券
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if (sum.compareTo(orderCouponGroup.getCoupon().getMinAmount()) >= 0) {
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//标记为合理分组
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orderCouponGroup.setSatisfactionCoupon(true);
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if (sum.compareTo(orderCouponGroup.getCoupon().getMinAmount()) >= 0) {
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orderCouponGroup.setSubtotal(sum.subtract(orderCouponGroup.getCoupon().getOffsetAmount()));
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orderCouponGroup.setSrcPrice(sum);
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orderCouponGroup.setCouponPrice(orderCouponGroup.getCoupon().getOffsetAmount());
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orderCouponGroup.setMsg(orderCouponGroup.getCoupon().getCName() + ",已优惠"
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+ orderCouponGroup.getCoupon().getOffsetAmount().stripTrailingZeros().toPlainString() + "元");
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}
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}
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if (sum.compareTo(orderCouponGroup.getCoupon().getMinAmount()) < 0) {
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orderCouponGroup.setSatisfactionCoupon(false);
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orderCouponGroup.setSubtotal(sum);
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orderCouponGroup.setSrcPrice(sum);
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orderCouponGroup.setMsg(orderCouponGroup.getCoupon().getCName());
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if (sum.doubleValue() > 0) {
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orderCouponGroup.setMsg(orderCouponGroup.getCoupon().getCName() + ",再买"
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+ (orderCouponGroup.getCoupon().getMinAmount().subtract(sum)).stripTrailingZeros()
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.toPlainString()
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+ "元立减" + orderCouponGroup.getCoupon().getOffsetAmount().stripTrailingZeros().toPlainString()
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+ "元");
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}
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}
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} else {
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orderCouponGroup.setSubtotal(sum);
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orderCouponGroup.setSrcPrice(sum);
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orderCouponGroup.setSatisfactionCoupon(true);
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}
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orderCouponGroup.setScorePay(scoreSum);
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}
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}
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