WxAppServer/src/main/java/com/bigdata/wxappserver/service/OrderService.java

package com.bigdata.wxappserver.service;

import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.bigdata.wxappserver.dto.OrderDto;
import com.bigdata.wxappserver.entity.Goods;
import com.bigdata.wxappserver.entity.Order;
import com.bigdata.wxappserver.entity.User;
import com.bigdata.wxappserver.enums.OrderStatusEnum;
import com.bigdata.wxappserver.mapper.OrderMapper;
import com.bigdata.wxappserver.result.Result;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: Cool
 * @Date: 2024/08/28/20:28
 * @Description:
 */
@Service
public class OrderService extends ServiceImpl<OrderMapper, Order> {
    @Autowired
    UserService userService;

    @Autowired
    GoodsService goodsService;

    @Transactional(rollbackFor = Exception.class)
    public Result addOrUpdate(JSONObject jsonObject) {
        Order order = jsonObject.toJavaObject(Order.class);
        if (order == null) {
            return Result.error("参数错误");
        }
        List<User> userList = userService.list();
        User userTemp = userList.stream().filter(e -> Objects.equals(e.getOpenId(), jsonObject.get("openId"))).findFirst().orElse(null);
        order.setUserId(userTemp.getId());
        if (!StringUtils.hasLength(order.getAddress())) {
            User user = userService.getById(order.getUserId());
            order.setAddress(user.getAddress());
        }
        if (order.getUserId() == null || order.getAddress() == null || order.getNum() == null || order.getGoodsId() == null) {
            return Result.error("请携带完整的参数");
        }
        String orderCode = UUID.randomUUID().toString().replace("-", "");
        order.setOrderCode(orderCode);
        boolean success = saveOrUpdate(order);
        if(success){
            return Result.success(orderCode);
        }else {
            return Result.error("未知错误，请联系管理员！");
        }
    }

    public JSONObject list(JSONObject jsonObject) {
        String openId = jsonObject.getString("openId");
        List<User> userList = userService.list();
        User user = userList.stream().filter(e -> Objects.equals(e.getOpenId(), openId)).findFirst().orElse(null);
        Integer status = jsonObject.getInteger("status");
//        Integer currentPage = jsonObject.getInteger("currentPage");
//        Integer pageSize = jsonObject.getInteger("pageSize");
//        IPage<Order> page = new Page<>(currentPage, pageSize);
        LambdaQueryWrapper<Order> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(user != null, Order::getUserId, user.getId())
                .eq(status != null, Order::getStatus, status);
//        IPage<Order> orderIPage = page(page, wrapper);
        List<Order> list = list(wrapper);
        List<OrderDto> orderDtoList = dealList(list);
        JSONObject returnData = new JSONObject();
        returnData.fluentPut("data", orderDtoList);
        return returnData;
    }

    private List<OrderDto> dealList(List<Order> records) {
        if (CollectionUtils.isEmpty(records)) {
            return new ArrayList<>();
        }
        List<Goods> goodsList = goodsService.listByIds(records.stream().map(Order::getGoodsId).collect(Collectors.toSet()));
        Set<Goods> goodsSet = new HashSet<>(goodsList);
        List<OrderDto> list = new ArrayList<>();
        for (Order record : records) {
            OrderDto orderDto = new OrderDto();
            record.setStatusDescription(OrderStatusEnum.describe(record.getStatus()));
            BeanUtils.copyProperties(record, orderDto);
            Goods goods = goodsSet.stream().filter(item -> Objects.equals(item.getId(), record.getGoodsId()))
                    .findFirst().orElse(null);
            if (goods != null) {
                orderDto.setGoodDetail(goods.getGoodDetail());
                orderDto.setGoodPrice(goods.getGoodPrice());
                orderDto.setGoodImage(goods.getGoodImage());
                orderDto.setGoodName(goods.getGoodName());
            }
            list.add(orderDto);
        }
        return list;
    }


    public JSONObject queryById(Integer id) {
        if (id == null) {
            return new JSONObject().fluentPut("success", false).fluentPut("message", "缺少ID");
        }
        Order order = getById(id);
        List<OrderDto> orderDtoList = dealList(Collections.singletonList(order));
        return new JSONObject().fluentPut("data", orderDtoList.get(0));
    }


    @Transactional(rollbackFor = Exception.class)
    public JSONObject delete(Integer id) {
        if (id == null) {
            return new JSONObject().fluentPut("success", false).fluentPut("message", "缺少Id");
        }
        boolean success = removeById(id);
        if (success) {
            return new JSONObject().fluentPut("success", true);
        } else {
            return new JSONObject().fluentPut("success", false).fluentPut("message", "出现未知错误，请联系管理员！");
        }
    }

    public void paySuccess(String outTradeNo) {
        List<Order> list = list();
        Order order = list.stream().filter(e -> Objects.equals(String.valueOf(e.getId()), outTradeNo)).findFirst().orElse(null);
        if (order != null) {
            order.setStatus(2);
        }
        saveOrUpdate(order);
    }


}