'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 BedroomService extends CrudService {
  constructor(ctx) {
    super(ctx, 'bedroom');
    this.model = this.ctx.model.Bedroom;
    this.umodel = this.ctx.model.Student;
    this.tmodel = this.ctx.model.Trainplan;
  }

  // 一键分寝
  async apart(data) {
    const { trainplanid, termid, batchid } = data;
    assert(trainplanid, 'trainplanid不能为空');
    assert(termid, 'termid不能为空');
    assert(batchid, 'batchid不能为空');
    // 根据计划id取得当前计划
    const trainplan = await this.tmodel.findById({ id: trainplanid });
    // 根据期id取得当前期信息
    const term = trainplan.termnum.find(p => p.id === termid);
    // 根据批次id查询批次信息
    const _batch = term.batchnum.find(p => p.id === batchid);
    // 查询所有寝室列表
    const bedroomList = await this.model.find({ batch: _batch.batch });

    // 循环所有当前批次下的寝室列表进行分寝处理
    for (const bedroom of bedroomList) {
      // 判断当前寝室号是否已有
      // 根据期id查找所有当期学生列表
      const studentList = await this.getstudents(termid, batchid);
      const _stu = studentList.find(p => p.bedroomid === bedroom.id);
      if (bedroom.number !== _stu.length) {
        let i = 0;
        let _gender = '';
        for (const stud of studentList) {
          if (i === 0) {
            if (!bedroom.gender) {
              stud.bedroomid = bedroom.id;
              stud.bedroom = bedroom.number;
              await stud.save();
              i = i + 1;
              _gender = stud.gender;
            } else {
              if (bedroom.gender === stud.gender) {
                stud.bedroomid = bedroom.id;
                stud.bedroom = bedroom.number;
                await stud.save();
                i = i + 1;
                _gender = stud.gender;
              }
            }
          } else if (i < bedroom.number) {
            if (_gender === stud.gender) {
              stud.bedroomid = bedroom.id;
              stud.bedroom = bedroom.number;
              await stud.save();
              i = i + 1;
            }
          } else if (i === bedroom.number) {
            i = 0;
            break;
          }
        }
      }
    }

  }

  // 取得符合条件的学生列表
  async getstudents(termid, batchid) {
    // 根据期id查找所有当期学生列表
    const studentList = await this.umodel.find({ termid, batchid });
    return studentList;
  }
}

module.exports = BedroomService;