server/app/service/trade/order.js

'use strict';
const { CrudService } = require('naf-framework-mongoose-free/lib/service');
const { BusinessError, ErrorCode } = require('naf-core').Error;
const _ = require('lodash');
const assert = require('assert');

//
class OrderService extends CrudService {
  constructor(ctx) {
    super(ctx, 'order');
    this.model = this.ctx.model.Trade.Order;
    this.goodsModel = this.ctx.model.Shop.Goods;
    this.goodsSpecModel = this.ctx.model.Shop.GoodsSpec;
    this.addressModel = this.ctx.model.User.Address;
  }
  /**
   * 从购物车页进入下单页面
   * @param {Object} body 请求参数
   */
  async fromCartToOrder(body) {}

  /**
   * 从商品页直接购买进入下单页
   * @param {Object} body 请求参数
   * @param body.goods_id 商品id
   * @param body.goodsSpec_id 商品规格id
   * @param body.num 购买数量
   */
  async fromGoodsToOrder({ goods_id, goodsSpec_id, num }) {
    const { result, msg } = await this.ctx.service.util.trade.checkCanBuy({ goods_id, goodsSpec_id, num });
    if (!result) throw new BusinessError(ErrorCode.SERVICE_FAULT, msg);
    // 组装页面的数据
    const user = this.ctx.user;
    const customer = _.get(user, '_id');
    if (!customer) throw new BusinessError(ErrorCode.NOT_LOGIN, '未找到用户信息');
    // 找到默认地址
    const address = await this.addressModel.findOne({ customer, is_default: '1' });
    // 组装商品数据

    // TODO 优惠券列表 及 其他优惠
  }


}

module.exports = OrderService;