'use strict';


const assert = require('assert');
const _ = require('lodash');
const { ObjectId } = require('mongoose').Types;
const { CrudService } = require('naf-framework-mongoose/lib/service');
const { BusinessError, ErrorCode } = require('naf-core').Error;

class QuestionnaireService extends CrudService {
  constructor(ctx) {
    super(ctx, 'qusetionnaire');
    this.questionnairemodel = this.ctx.model.Questionnaire;
    this.questionmodel = this.ctx.model.Question;
  }

  // 插入问卷
  async create(data) {
    const { name, num } = data;
    assert(name, '问卷名称不能为空');
    assert(num, '问卷序号不能为空');
    return await this.questionnairemodel.create(data);
  }

  // 根据id删除问卷
  async delete({ id }) {
    await this.questionnairemodel.findByIdAndDelete(id);
    return 'deleted';
  }

  // 根据id更新问卷信息
  async update({ id }, data) {
    console.log(data);
    const questionnaire = await this.questionnairemodel.findById(id);
    if (questionnaire.name) {
      questionnaire.name = data.name;
    }
    if (questionnaire.num) {
      questionnaire.num = data.num;
    }
    questionnaire.question = data.question;
    console.log(questionnaire);
    return await questionnaire.save();
  }

  // 查询
  async query({ skip, limit, ...num }) {
    const total = await (await this.questionnairemodel.find(num)).length;
    const data = await this.questionnairemodel.find(num).skip(Number(skip)).limit(Number(limit));
    const result = { total, data };
    return result;
  }

  // 查询详情
  async show({ id }) {
    const questionnaire = await this.questionnairemodel.findById(id);
    const questions = await questionnaire.question;
    const datas = [];
    // 根据问卷中保存的问卷题目id查询题目详情
    for (const code of questions) {
      const question = await this.questionmodel.findById(code);
      // 将查询出的题目放入一个数组中
      datas.push(question);
    }
    questionnaire.question = datas;
    // 将查询到的问卷id，名称，序号，查询到的问卷题目数组放到一个新的数据中
    const newdata = { id, name: questionnaire.name, num: questionnaire.num, question: datas };
    return newdata;
  }

}

module.exports = QuestionnaireService;