app-AgricultureSmart/springboot/src/main/java/com/example/service/OrdersService.java

package com.example.service;

import cn.hutool.core.date.DateUtil;
import cn.hutool.core.util.IdUtil;
import cn.hutool.json.JSONUtil;
import com.example.common.enums.OrderStatusDELIVERY;
import com.example.common.enums.OrderStatusToShop;
import com.example.common.enums.OrderType;
import com.example.common.enums.ResultCodeEnum;
import com.example.entity.Account;
import com.example.entity.Orders;
import com.example.entity.Product;
import com.example.entity.User;
import com.example.exception.CustomException;
import com.example.mapper.OrdersMapper;
import com.example.mapper.ProductMapper;
import com.example.mapper.UserMapper;
import com.example.utils.TokenUtils;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import javax.annotation.Resource;

import com.github.pagehelper.util.StringUtil;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;

/**
 * 订单表业务处理
 **/
@Service
public class OrdersService {

    @Resource
    private OrdersMapper ordersMapper;
    @Resource
    private UserMapper userMapper;
    @Resource
    private ProductMapper productMapper;
    static final Integer costTime = 1200; //1200s 20分支

    public Integer getNumsWithShopId(Integer shopId){
        return ordersMapper.getUnfinishedNums(shopId);
    }

    /**
     * 小程序下单新增，点击下单
     */
    public Orders add(Orders orders) {
//        Account currentUser = TokenUtils.getCurrentUser();
//        if(currentUser== null){
//            currentUser = new User();
//            currentUser.setId(orders.getUserId());
//        }
//        User user = userMapper.selectById(currentUser.getId());
//        BigDecimal account = user.getAccount(); // 获取余额
//        BigDecimal cost = new BigDecimal(0),t_cost; //记录花费了多少钱
//
//        // 扣除钱包余额
//        if(account.doubleValue() < cost.doubleValue()){
//            throw new CustomException(ResultCodeEnum.ACCOUNT_LIMIT_ERROR);
//        }
//        user.setAccount(account.subtract(cost));
//        userMapper.updateById(user); //更新扣费
        orders.setOrderState("待送达");
//        orders.setUserId(currentUser.getId()); // 设置用户id
        orders.setTransCode(IdUtil.getSnowflakeNextIdStr()); // 随机创建一个交易单号
        orders.setTimeOrder(DateUtil.now()); // 创建订单时间

        // 如果是外卖：这个是预计送达时间 ，如果是自提 这个是预计可取餐时间
        orders.setTimePre(String.valueOf(DateUtil.offsetSecond(DateUtil.dateSecond(),11))); //预计送达时间

        ordersMapper.insert(orders);
        Orders resOrders = ordersMapper.selectById(orders.getId());
        return resOrders;
        //this.setCache(orders.getId()); // 设置缓存 但是这里插入前是没有orders的id的应该怎么处理
    }
    /**
     * 删除
     */
    public void deleteById(Integer id) {
        ordersMapper.deleteById(id);
    }

    /**
     * 批量删除
     */
    public void deleteBatch(List<Integer> ids) {
        for (Integer id : ids) {
            ordersMapper.deleteById(id);
        }
    }

    /**
     * 修改
     */
    public void updateById(Orders orders) {
         ordersMapper.updateById(orders);
    }

    /**
     * 根据ID查询
     */
    public Orders selectById(Integer id) {
        return ordersMapper.selectById(id);
    }

    /**
     * 查询所有
     */
    public List<Orders> selectAll(Orders orders) {
        return ordersMapper.selectAll(orders);
    }

    /**
     * 分页查询
     */
    public PageInfo<Orders> selectPage(Orders orders, Integer pageNum, Integer pageSize) {
        PageHelper.startPage(pageNum, pageSize);
        List<Orders> list = ordersMapper.selectAll(orders);
        return PageInfo.of(list);
    }

}