Examples with OrderSubmitCommand com.whoiszxl.cqrs.command.OrderSubmitCommand used on opensource projects

Example 1 with OrderSubmitCommand

use of com.whoiszxl.cqrs.command.OrderSubmitCommand in project shopzz by whoiszxl.

the class OrderServiceImpl method checkOrder.

/**
 * 校验订单
 * @param orderSubmitCommand 订单提交命令
 * @return
 */
private OrderCheckDTO checkOrder(OrderSubmitCommand orderSubmitCommand) {
    OrderCheckDTO orderCheckDTO = new OrderCheckDTO();
    // 1. 获取用户登录信息
    Long memberId = AuthUtils.getMemberId();
    // 2. 获取购物车中选中的sku信息
    CartDetailApiResponse cartDetail = cartService.getCartDetail();
    List<CartItemVO> cartItemList = cartDetail.getCartItemVOList();
    if (ObjectUtils.isEmpty(cartItemList)) {
        ExceptionCatcher.catchValidateEx(ResponseResult.buildError("购物车不存在选中商品"));
    }
    List<Long> skuIds = cartItemList.stream().map(CartItemVO::getSkuId).collect(Collectors.toList());
    String feignParams = ParamUtils.array2Str(skuIds);
    ResponseResult<List<SkuFeignDTO>> skuListResult = productFeignClient.getSkuListBySkuIdList(feignParams);
    if (!skuListResult.isOk()) {
        ExceptionCatcher.catchValidateEx(ResponseResult.buildError(skuListResult.getMessage()));
    }
    List<SkuFeignDTO> skuFeignDTOList = skuListResult.getData();
    // 2.1 校验订单中是否存在下架的SKU
    // 2.2 校验订单中的商品库存是否足够
    ResponseResult<List<SkuStockFeignDTO>> skuStockResult = productFeignClient.getStockBySkuIdList(feignParams);
    if (!skuStockResult.isOk()) {
        ExceptionCatcher.catchValidateEx(ResponseResult.buildError(skuStockResult.getMessage()));
    }
    List<SkuStockFeignDTO> skuStockList = skuStockResult.getData();
    skuStockList.forEach(stock -> cartItemList.forEach(cartItemVO -> {
        if (stock.getSkuId().equals(cartItemVO.getSkuId())) {
            if (stock.getSaleStockQuantity() < cartItemVO.getQuantity()) {
                ExceptionCatcher.catchValidateEx(ResponseResult.buildError("返回刷新下吧，有SKU库存不够了"));
            }
        }
    }));
    BigDecimal serverFinalPrice = BigDecimal.ZERO;
    for (SkuFeignDTO skuFeignDTO : skuFeignDTOList) {
        for (CartItemVO cartItemVO : cartItemList) {
            if (skuFeignDTO.getId().equals(cartItemVO.getSkuId())) {
                serverFinalPrice = serverFinalPrice.add(skuFeignDTO.getPromotionPrice().multiply(new BigDecimal(cartItemVO.getQuantity())));
            }
        }
    }
    orderCheckDTO.setFinalPrice(serverFinalPrice);
    orderCheckDTO.setFinalDiscountPrice(serverFinalPrice);
    // 3. 已使用优惠券逻辑
    Long couponId = orderSubmitCommand.getCouponId();
    if (couponId != null) {
        // 3.1 校验优惠券是否有效
        ResponseResult<CouponFeignDTO> couponResult = promotionFeignClient.getCoupon(couponId);
        if (!couponResult.isOk()) {
            ExceptionCatcher.catchValidateEx(ResponseResult.buildError("优惠券无效"));
        }
        CouponFeignDTO couponDTO = couponResult.getData();
        LocalDateTime now = LocalDateTime.now();
        if (couponDTO.getStartTime().isBefore(now)) {
            ExceptionCatcher.catchValidateEx(ResponseResult.buildError("未到使用时间"));
        }
        if (couponDTO.getEndTime().isAfter(now)) {
            ExceptionCatcher.catchValidateEx(ResponseResult.buildError("优惠券已过期"));
        }
        // 3.2 校验是否领取过、使用过
        ResponseResult<Boolean> isUsedResponse = promotionFeignClient.checkCouponIsUsed(couponId);
        if (!isUsedResponse.isOk()) {
            ExceptionCatcher.catchValidateEx(ResponseResult.buildError("优惠券已领取过或使用过"));
        }
        // 3.3 校验订单是否满足使用阈值，如果是满减券或满减折扣券，并且是全场使用券，并且订单金额小于了使用阈值
        if ((couponDTO.getType().equals(CouponTypeEnum.FULL_DISCOUNT.getCode()) || couponDTO.getType().equals(CouponTypeEnum.FULL_RATE.getCode())) && couponDTO.getFullLimited().equals(CouponFullLimitedEnum.NOT_LIMIT.getCode()) && serverFinalPrice.compareTo(couponDTO.getUseThreshold()) < 0) {
            ExceptionCatcher.catchValidateEx(ResponseResult.buildError("未达到优惠券使用阈值"));
        }
        // 3.4 校验订单是否满足使用阈值，如果是满减券或满减折扣券，并且是限制类目使用券
        if ((couponDTO.getType().equals(CouponTypeEnum.FULL_DISCOUNT.getCode()) || couponDTO.getType().equals(CouponTypeEnum.FULL_RATE.getCode())) && couponDTO.getFullLimited().equals(CouponFullLimitedEnum.LIMIT.getCode())) {
            // 获取到优惠券能使用的分类
            List<Long> categoryIdList = couponDTO.getCategoryIdList();
            BigDecimal categoryPrice = BigDecimal.ZERO;
            for (SkuFeignDTO skuFeignDTO : skuFeignDTOList) {
                if (categoryIdList.contains(skuFeignDTO.getCategoryId())) {
                    CartItemVO cartItemVO = cartItemList.stream().filter(e -> e.getSkuId().equals(skuFeignDTO.getId())).findFirst().get();
                    BigDecimal skuPrice = skuFeignDTO.getPromotionPrice().multiply(new BigDecimal(cartItemVO.getQuantity()));
                    categoryPrice = categoryPrice.add(skuPrice);
                }
            }
            if (categoryPrice.compareTo(couponDTO.getUseThreshold()) < 0) {
                ExceptionCatcher.catchValidateEx(ResponseResult.buildError("未达到优惠券使用阈值"));
            }
        }
        // 4. 计算前端传入最终金额是否与服务端计算金额一致
        BigDecimal finalDiscountPrice = serverFinalPrice;
        if (CouponTypeEnum.FULL_DISCOUNT.getCode().equals(couponDTO.getType()) || CouponTypeEnum.UNLIMITED.getCode().equals(couponDTO.getType())) {
            // 满减和无门槛券直接减去折扣
            finalDiscountPrice = serverFinalPrice.subtract(couponDTO.getDiscountAmount());
            if (finalDiscountPrice.compareTo(orderSubmitCommand.getFinalPrice()) != 0) {
                ExceptionCatcher.catchValidateEx(ResponseResult.buildError("价格错误"));
            }
        }
        if (CouponTypeEnum.FULL_RATE.getCode().equals(couponDTO.getType())) {
            // 满减折扣直接乘以折扣比率
            finalDiscountPrice = serverFinalPrice.multiply(couponDTO.getDiscountRate());
            if (finalDiscountPrice.compareTo(orderSubmitCommand.getFinalPrice()) != 0) {
                ExceptionCatcher.catchValidateEx(ResponseResult.buildError("价格错误"));
            }
        }
        orderCheckDTO.setFinalDiscountPrice(finalDiscountPrice);
    }
    return orderCheckDTO;
}