'use strict';

const Service = require('egg').Service;

class BaseService extends Service {

  async one(id, pop) {
    return pop ? await this.tag().findById(id).populate(pop)
      : await this.tag().findById(id);
  }

  async oneData(data, pop) {
    const sort = data.sort;
    delete data.sort;
    if (pop) {
      return sort ? await this.tag().findOne(data).populate(pop)
        .sort(sort)
        : await this.tag().findOne(data).populate(pop);
    }
    return sort ? await this.tag().findOne(data).sort(sort)
      : await this.tag().findOne(data);
  }

  async list(data, pop) {
    const sort = data.sort;
    delete data.sort;
    if (pop) {
      return sort ? await this.tag().find(data).populate(pop)
        .sort(sort)
        : await this.tag().find(data).populate(pop);
    }
    return sort ? await this.tag().find(data).sort(sort)
      : await this.tag().find(data);
  }

  async listForPage(data, pop) {
    const page = data.page || 1;
    const rows = Number.parseInt(data.rows)
      || this.app.config.defaultPageSize;
    const sort = data.sort;

    delete data.page;
    delete data.rows;
    delete data.sort;


    if (pop) {
      const total = await this.tag().find(data).countDocuments();
      const result = (sort ? await this.tag().find(data).populate(pop)
        .sort(sort)
        .skip((page - 1) * rows)
        .limit(rows)
        : await this.tag().find(data).populate(pop)
          .skip((page - 1) * rows)
          .limit(rows));
      return {
        count: total,
        list: result,
      };
    }

    const total = await this.tag().find(data).countDocuments();
    const result = (sort ? await this.tag().find(data).sort(sort)
      .skip((page - 1) * rows)
      .limit(rows)
      : await this.tag().find(data).skip((page - 1) * rows)
        .limit(rows));
    return {
      count: total,
      list: result,
    };
  }

  async add(data) {
    return await this.tag().create(data);
  }

  async update(id, data) {
    return await this.tag().updateOne({ _id: id }, data);
  }

  async updateAll(cond, data) {
    return await this.tag().update(cond, data);
  }

  async delete(id) {
    return await this.tag().deleteOne({ _id: id });
  }

  async deleteAll(cond) {
    return await this.tag().delete(cond);
  }

}
module.exports = BaseService;