package com.caimei.service.impl;

import com.caimei.mapper.OrderMapper;
import com.caimei.mapper.ProductMapper;
import com.caimei.mapper.ShoppingCartMapper;
import com.caimei.model.ResponseJson;
import com.caimei.model.dto.CartDto;
import com.caimei.model.po.CmCartPo;
import com.caimei.model.vo.*;
import com.caimei.service.ShoppingCartService;
import com.caimei.util.MathUtil;
import com.caimei.util.ProductUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import java.math.BigDecimal;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Description
 *
 * @author : plf
 * @date : 2021/3/23
 */
@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {
    @Resource
    private ShoppingCartMapper shoppingCartMapper;
    @Resource
    private ProductMapper productMapper;
    @Resource
    private OrderMapper orderMapper;
    @Value("${caimei.oldapi}")
    private String domain;

    @Override
    public ResponseJson<Integer> addShoppingCart(CartDto cart) {
        Integer heUserId = cart.getHeUserId();
        heUserId = heUserId == null ? 0 : heUserId;
        CmCartPo cartPo = shoppingCartMapper.findCartProduct(cart.getUserId(), cart.getProductId(), heUserId);
        if (cartPo == null) {
            shoppingCartMapper.insertCart(cart);
        } else {
            int productCount = cartPo.getProductCount() + cart.getProductCount();
            shoppingCartMapper.updateByProductCount(cartPo.getCartId(), productCount);
        }
        Integer cartQuantity = shoppingCartMapper.getCartQuantity(cart.getUserId());
        return ResponseJson.success(cartQuantity);
    }

    @Override
    public ResponseJson<Integer> getCartQuantity(Integer userId) {
        Integer cartQuantity = shoppingCartMapper.getCartQuantity(userId);
        return ResponseJson.success(cartQuantity);
    }

    @Override
    public ResponseJson<Map<String, Object>> shoppingInfo(Integer userId) {
        Map<String, Object> map = new HashMap<>(3);
        List<ShopVo> shopList = shoppingCartMapper.findCartShop(userId);
        shopList.forEach(shop -> {
            shop.setLogo(ProductUtils.getImageURL("shopLogo", shop.getLogo(), 0, domain));
            BigDecimal shopTotalPrice = BigDecimal.ZERO;
            List<CartProductVo> productList = shoppingCartMapper.findByShopCartProduct(shop.getShopId(), userId);
            for (CartProductVo product : productList) {
                setPrice(product);
                shopTotalPrice = MathUtil.add(shopTotalPrice, MathUtil.mul(product.getProductCount(), product.getPrice()));
            }
            shop.setShopTotalPrice(shopTotalPrice);
            shop.setProductList(productList);
        });
        map.put("shopList", shopList);
        //失效商品
        List<CartProductVo> products = shoppingCartMapper.findExpiredGoods(userId);
        map.put("products", products);
        //商品数量
        Integer cartQuantity = shoppingCartMapper.getCartQuantity(userId);
        map.put("cartQuantity", cartQuantity);
        return ResponseJson.success(map);
    }

    /**
     * 设置活动价格阶梯
     */
    @Override
    public void setPrice(CartProductVo product) {
        //税费
        boolean addTaxFlag = ("0".equals(product.getIncludedTax()) && ("1".equals(product.getInvoiceType()) || "2".equals(product.getInvoiceType())));
        Integer activityId = productMapper.findActivityByProductId(product.getProductId());
        if (activityId != null && activityId > 0) {
            //活动阶梯
            List<ActivityLadderVo> ladderList = productMapper.findActivityLadder(activityId, product.getProductId());
            if (ladderList != null && ladderList.size() > 0) {
                product.setActiveStatus(1);
                for (ActivityLadderVo ladder : ladderList) {
                    if (addTaxFlag) {
                        BigDecimal addedValueTax = MathUtil.div(MathUtil.mul(ladder.getBuyPrice(), product.getClubTaxPoint()), BigDecimal.valueOf(100), 2);
                        ladder.setBuyPrice(MathUtil.add(addedValueTax, ladder.getBuyPrice()));
                    }
                    if (product.getProductCount() >= ladder.getBuyNum()) {
                        product.setPrice(ladder.getBuyPrice());
                    }
                }
            } else if (addTaxFlag) {
                BigDecimal addedValueTax = MathUtil.div(MathUtil.mul(product.getPrice(), product.getClubTaxPoint()), BigDecimal.valueOf(100), 2);
                product.setPrice(MathUtil.add(addedValueTax, product.getPrice()));
            }
            product.setLadderList(ladderList);
        } else {
            if (addTaxFlag) {
                BigDecimal addedValueTax = MathUtil.div(MathUtil.mul(product.getPrice(), product.getClubTaxPoint()), BigDecimal.valueOf(100), 2);
                product.setPrice(MathUtil.add(addedValueTax, product.getPrice()));
            }
        }
    }

    @Override
    public ResponseJson<String> buyAgainAddCart(Integer orderId) {
        OrderVo order = orderMapper.findOrder(orderId);
        List<OrderProductVo> orderProductList = orderMapper.findOrderProductAll(orderId);
        CartDto cart = new CartDto();
        cart.setUserId(order.getUserId());
        //商品是否全部下架
        orderProductList.forEach(orderProduct -> {
            Integer validFlag = orderMapper.findProductStatus(orderProduct.getProductId());
            if (validFlag == 1) {
                cart.setProductId(orderProduct.getProductId());
                cart.setProductCount(orderProduct.getNum());
                Integer heUserId = orderProduct.getHeUserId();
                if (heUserId != null && heUserId > 0) {
                    Integer activityId = productMapper.findActivityByProductId(orderProduct.getProductId());
                    if (activityId != null && activityId > 0) {
                        cart.setHeUserId(heUserId);
                    } else {
                        cart.setHeUserId(0);
                    }
                } else {
                    cart.setHeUserId(0);
                }
                addShoppingCart(cart);
            }
        });
        return ResponseJson.success(null);
    }

    @Override
    public void updateNumber(Integer cartId, Integer productCount) {
        shoppingCartMapper.updateByProductCount(cartId, productCount);
    }

    @Override
    public ResponseJson<String> deleteCart(String cartIds) {
        String[] split = cartIds.split(",");
        for (String cartId : split) {
            if (!StringUtils.isEmpty(cartId)) {
                shoppingCartMapper.deleteCart(cartId);
            }
        }
        return ResponseJson.success("删除购物车成功");
    }
}