'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 { ObjectId } = require('mongoose').Types;

//
class GoodsSetService extends CrudService {
  constructor(ctx) {
    super(ctx, 'goodsset');
    this.model = this.ctx.model.Shop.GoodsSet;
    this.goodsModel = this.ctx.model.Shop.Goods;
    this.goodsSpecModel = this.ctx.model.Shop.GoodsSpec;
  }
  async update(filter, update, { projection } = {}) {
    assert(filter);
    assert(update);
    const beforeUpdateResult = await this.beforeUpdate(filter, update);
    filter = beforeUpdateResult.filter;
    update = beforeUpdateResult.update;
    const { _id, id } = filter;
    if (_id || id) filter = { _id: ObjectId(_id || id) };
    // TODO:检查数据是否存在
    const entity = await this.model.findOne(filter).exec();
    if (!entity) throw new BusinessError(ErrorCode.DATA_NOT_EXIST);
    await this.model.updateOne(filter, update);
    let reSearchData = await this.model.findOne(filter, projection).exec();
    reSearchData = await this.afterUpdate(filter, update, reSearchData);
    return reSearchData;
  }
  /**
   * 获取套装快照
   * @param id 套装id
   */
  async getSnapshot(id) {
    const data = await this.model.findById(id).lean();
    const { set = [] } = data;
    for (const s of set) {
      const { goods, spec } = s;
      const goodsData = await this.goodsModel.findById(goods).lean();
      const goodsSpecData = await this.goodsSpecModel.findById(spec).lean();
      s.spec = goodsSpecData;
      s.goods = goodsData;
    }
    // 换成goods
    data.goods = set;
    delete data.set;
    delete data._id;
    return data;
  }
}

module.exports = GoodsSetService;