'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');
const { pipeline } = require('stream');

// 店铺类视图
class ShopService extends CrudService {
  constructor(ctx) {
    super(ctx, 'shop');
    this.model = this.ctx.model.Shop.Shop;
  }

  // 微店页面查询
  async microIndex(condition, options) {
    // const pipline = [{ $sort: { 'meta.createdAt': -1 } }];
    // pipline.push({ $project: { name: 1, file: 1 } });
    // pipline.push({ $addFields: { shop_id: { $toString: '$_id' } } });
    // // 表关联
    // pipline.push({
    //   $lookup: {
    //     from: 'goods',
    //     localField: 'shop_id',
    //     foreignField: 'shop',
    //     as: 'goods',
    //   },
    // });
    // const list = await this.model.aggregate(pipline);
    let list = await this.ctx.service.shop.shop.query(condition, { ...options, projection: [ 'name', 'logo' ] });
    list = JSON.parse(JSON.stringify(list));
    const arr = [];
    for (const s of list) {
      const { _id: shop, name, logo } = s;
      const market_num = await this.ctx.service.shop.goods.count({ shop });
      // TODO: 收藏
      const follow_num = 0;
      // TODO:当前用户是否收藏
      const is_follow = false;
      const goodsList = await this.ctx.service.view.goods.indexGoodsList({ shop }, { skip: 0, limit: 3 });
      const obj = { _id: shop, logo, name, market_num, follow_num, is_follow, market: goodsList };
      arr.push(obj);
    }

    return arr;
  }
}

module.exports = ShopService;