'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 moment = require('moment');

//
class StoreShopService extends CrudService {
  constructor(ctx) {
    super(ctx, 'storeshop');
    this.model = this.ctx.model.User.StoreShop;
  }

  async create({ shop }) {
    assert(shop, '缺少店铺信息');
    const customer = _.get(this.ctx, 'user._id');
    assert(customer, '缺少用户信息');
    let data = await this.model.findOne({ customer, shop });
    if (data) {
      await this.model.deleteOne({ customer, shop });
      return { msg: '取消收藏', result: false };
    }
    data = await this.model.create({ customer, shop, time: moment().format('YYYY-MM-DD HH:mm:ss') });
    return { msg: '收藏成功', result: true };
  }

  // 检查是否收藏店铺
  async check({ shop, customer }) {
    const num = await this.model.count({ shop, customer });
    return num > 0;
  }

  async userView(query = {}, { skip, limit } = {}) {
    const customer = _.get(this.ctx, 'user._id');
    assert(customer, '缺少用户信息');
    const { name, time } = query;
    const searchPips = [];
    const sort = { time: -1 };
    if (name) searchPips.push({ $match: { name: new RegExp(name) } });
    if (time) sort.time = parseInt(time) || -1;

    const pipline = [{ $match: { customer } }];
    // 关联店铺
    pipline.push({ $addFields: { shop_id: { $toObjectId: '$shop' } } });
    pipline.push({
      $lookup: {
        from: 'shop',
        localField: 'shop_id',
        foreignField: '_id',
        as: 's',
      },
    });
    pipline.push({ $unwind: '$s' });
    // 格式化数据
    pipline.push({
      $project: {
        _id: '$s._id',
        time: 1,
        name: '$s.name',
        logo: '$s.logo',
        status: '$s.status',
        address: '$s.address',
        phone: '$s.phone',
      },
    });
    // 条件查询
    if (searchPips.length > 0) pipline.push(...searchPips);
    // 联表-规格
    const qPipline = _.cloneDeep(pipline);
    qPipline.push({ $sort: sort });
    if (parseInt(skip)) qPipline.push({ $skip: parseInt(skip) });
    if (parseInt(limit)) qPipline.push({ $limit: parseInt(limit) });
    const list = await this.model.aggregate(qPipline);
    const tPipline = _.cloneDeep(pipline);
    tPipline.push({ $count: 'total' });
    const total = await this.model.aggregate(tPipline);
    return { list, total: _.get(_.head(total), 'total', 0) };
  }
}

module.exports = StoreShopService;