'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');

// 对账
class BillService extends CrudService {
  constructor(ctx) {
    super(ctx, 'bill');
    this.orderDetailModel = this.ctx.model.Trade.OrderDetail;
    this.afterSaleModel = this.ctx.model.Trade.AfterSale;
  }
  /**
   * 生成店铺对账单
   ** 根据店铺id,开始时间和结束时间,形成对账单
   * @param {Object} query 查询条件
   */
  async getBill(query) {
    const { shop, start, end } = query;
    assert(start, '缺少开始时间');
    assert(end, '缺少结束时间');
    const pipline = [];
    // TODO: 商店过滤
    // 时间过滤
    const q = { $match: { $and: [{ pay_time: { $gte: start } }, { pay_time: { $lte: end } }] } };
    pipline.push(q);
    // #region 整理数据
    // 整理最外层的orderDetail,没用的裁掉
    const $project = {
      type: 1,
      total_detail: 1,
      no: 1,
      goods: {
        _id: 1,
        sell_money: 1,
        buy_num: 1,
        freight: 1,
        group_config: { money: 1 },
        name: 1,
        goods: { name: 1 },
      },
    };
    pipline.push({ $project });
    // 按规格平铺开
    pipline.push({ $unwind: '$goods' });
    // #endregion
    const orderList = await this.orderDetailModel.aggregate(pipline);
    return orderList;

  }
}

module.exports = BillService;