package com.oying.modules.sh.service.impl;

import com.oying.exception.BadRequestException;
import com.oying.modules.pc.product.domain.Product;
import com.oying.modules.pc.product.domain.enums.ProductStatusEnum;
import com.oying.modules.pc.product.service.ProductService;
import com.oying.modules.sh.domain.Order;
import com.oying.modules.sh.domain.request.GeneratorOrder;
import com.oying.modules.sh.domain.request.ProductOrder;
import com.oying.modules.sh.domain.request.SubmitOrder;
import com.oying.modules.sh.domain.vo.OrderInfo;
import com.oying.modules.sh.domain.vo.ProductInfo;
import com.oying.modules.sh.service.UserAddressService;
import com.oying.utils.FileUtil;
import lombok.RequiredArgsConstructor;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.oying.modules.sh.service.OrderService;
import com.oying.modules.sh.domain.dto.OrderQueryCriteria;
import com.oying.modules.sh.mapper.OrderMapper;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.oying.utils.PageUtil;

import java.math.BigDecimal;
import java.util.*;
import java.io.IOException;
import javax.servlet.http.HttpServletResponse;

import com.oying.utils.PageResult;

/**
 * @author lixin
 * @description 服务实现
 * @date 2025-06-11
 **/
@Service
@RequiredArgsConstructor
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Order> implements OrderService {

    private final OrderMapper orderMapper;
    private final UserAddressService userAddressService;
    private final ProductService productService;

    @Override
    public PageResult<Order> queryAll(OrderQueryCriteria criteria, Page<Object> page) {
        return PageUtil.toPage(orderMapper.findAll(criteria, page));
    }

    @Override
    public List<Order> queryAll(OrderQueryCriteria criteria) {
        return orderMapper.findAll(criteria);
    }

    @Override
    public Order submitOrder(SubmitOrder submit) {
        return null;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public OrderInfo generatorOrder(GeneratorOrder criteria) {
        List<ProductInfo> products = new ArrayList<>();
        BigDecimal amount = BigDecimal.ZERO;
        for (ProductOrder productOrder : criteria.getProducts()) {
            Product product = productService.getById(productOrder.getProductId());
            if (product == null) {
                throw new BadRequestException("商品不存在");
            }
            if (product.getStoreId().equals(criteria.getStoreId())) {
                throw new BadRequestException("不支持跨门店下单");
            }
            if (!product.getStatus().equals(ProductStatusEnum.AVAILABLE.getValue())) {
                ProductStatusEnum statusEnum = ProductStatusEnum.get(product.getStatus());
                throw new BadRequestException(product.getName() + "：" + (statusEnum != null ? statusEnum.getReasonPhrase() : "状态"));
            }
            if (productOrder.getProductCount() > product.getStockQuantity()) {
                throw new BadRequestException("商品库存不足");
            }
            if (productOrder.getProductCount() < product.getMinPurchaseQuantity()) {
                throw new BadRequestException("起售数量不足");
            }
            ProductInfo info = new ProductInfo();
            info.setProduct(product);
            info.setProductLabels(product.getLabels());
            info.setCount(productOrder.getProductCount());
            products.add(info);
            amount = amount.add(product.getPrice().multiply(BigDecimal.valueOf(productOrder.getProductCount())));
        }
        OrderInfo info = new OrderInfo();
        info.setProducts(products);
        info.setAmount(amount);
        info.setPayAmount(amount);
        info.setPromotionAmount(BigDecimal.ZERO);
        info.setUserAddresses(userAddressService.queryUserAddress());
        return info;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void create(Order resources) {
        orderMapper.insert(resources);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void update(Order resources) {
        Order order = getById(resources.getOrderId());
        order.copy(resources);
        orderMapper.updateById(order);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void deleteAll(List<Long> ids) {
        orderMapper.deleteBatchIds(ids);
    }

    @Override
    public void download(List<Order> all, HttpServletResponse response) throws IOException {
        List<Map<String, Object>> list = new ArrayList<>();
        for (Order order : all) {
            Map<String, Object> map = new LinkedHashMap<>();
            map.put("订单号", order.getOrderNum());
            map.put("用户id", order.getUserId());
            map.put("门店ID", order.getStoreId());
            map.put("门店", order.getStoreName());
            map.put("描述", order.getOrderDescribe());
            map.put("原金额", order.getOriginalPrice());
            map.put("折扣价", order.getPaidPrice());
            map.put("实付金额", order.getActuallyPayPrice());
            map.put("支付状态", order.getPayState());
            map.put("消息", order.getPayMessage());
            map.put("支付类型", order.getPayType());
            map.put("支付时间", order.getPayTime());
            map.put("订单失效时间RFC3339", order.getExpireTime());
            map.put("openid", order.getOpenid());
            map.put("APPID", order.getAppId());
            map.put("创建人", order.getCreateBy());
            map.put("创建时间", order.getCreateTime());
            map.put("修改者", order.getUpdateBy());
            map.put("修改时间", order.getUpdateTime());
            list.add(map);
        }
        FileUtil.downloadExcel(list, response);
    }
}