'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 StudentService extends CrudService {
  constructor(ctx) {
    super(ctx, 'student');
    this.model = this.ctx.model.Student;
  }

  // 查询
  async seek({ termid, skip, limit }) {
    const students = await this.model.find({ termid, classid: null });
    const data = await this.model.find({ termid, classid: null }).skip(Number(skip)).limit(Number(limit));
    const total = await students.length;
    const result = { total, data };
    return result;
  }

  async findbedroom({ batchid }) {
    const students = await this.model.find({ batchid });
    const bedroomList = new Set();
    for (const student of students) {
      bedroomList.add(student.bedroom);
    }
    const result = [];
    let studentList = [];
    for (const bedroom of bedroomList) {
      const newstudents = await this.model.find({ bedroom });
      for (const newstudent of newstudents) {
        studentList.push(newstudent.name);
      }
      result.push({ bedroom, studentList });
      studentList = [];
    }
    return result;
  }

}

module.exports = StudentService;