'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 ClassService extends CrudService {
  constructor(ctx) {
    super(ctx, 'class');
    this.model = this.ctx.model.Class;
    this.stumodel = this.ctx.model.Student;
    this.lessmodel = this.ctx.model.Lesson;
    this.umodel = this.ctx.model.User;
    this.tmodel = this.ctx.model.Trainplan;
  }

  async divide(data) {
    const name = await data.classname;
    const number = await data.students.length;
    const type = await data.type;
    const termid = await data.termid;
    const batchid = await data.batchid;
    const classdata = { name, batchid, termid, number, type };
    // 根据班级名称查询班级是否已存在
    const newclass = await this.model.findOne({ name });
    // 如果已经存在
    if (newclass) {
      throw new BusinessError(ErrorCode.DATA_EXIST, '班级名称已存在');
      // const classid = newclass._id;
      // const oldstudents = this.stumodel.find({ classid });
      // for (const oldstudent of oldstudents) {
      //   oldstudent.classid = null;
      // }
      // // 遍历学生id
      // for (const studentid of data.students) {
      //   // 根据学生id找到学生数据修改其中的class字段
      //   const student = await this.stumodel.findById(studentid);
      //   student.batchid = batchid;
      //   student.classid = classid;
      //   await student.save();
      // }
    } else {
      // 如果班级不存在则创建班级
      const newdata = await this.model.create(classdata);
      // 查询班级id
      const classid = newdata._id;
      // 遍历学生id
      for (const studentid of data.students) {
        // 根据学生id找到学生数据修改其中的class字段
        const student = await this.stumodel.findById(studentid);
        student.classid = classid;
        student.batchid = batchid;
        student.termid = termid;
        await student.save();
      }
    }

  }

  async notice(data) {
    for (const classid of data.classids) {
      const _class = await this.model.findById(classid);
      const { headteacherid } = _class;
      const lesson = await this.lessmodel.findOne({ classid });
      const lessons = lesson.lessons;
      const remark = '感谢您的使用';
      const date = await this.ctx.service.util.updatedate();
      const detail = '班级各项信息已确认，请注意查收';
      // 遍历班级授课教师发送通知
      for (const lessoninfo of lessons) {
        const teaid = lessoninfo.teaid;
        const _teacher = await this.umodel.findOne({ uid: teaid, type: '3' });
        const teaopenid = _teacher.openid;
        this.ctx.service.weixin.sendTemplateMsg(this.ctx.app.config.REVIEW_TEMPLATE_ID, teaopenid, '您有一个新的通知', detail, date, remark, classid);
      }
      // 给班主任发送通知
      const _headteacher = await this.umodel.findOne({ uid: headteacherid, type: '1' });
      const headteaopenid = _headteacher.openid;
      this.ctx.service.weixin.sendTemplateMsg(this.ctx.app.config.REVIEW_TEMPLATE_ID, headteaopenid, '您有一个新的通知', detail, date, remark, classid);
      // 根据班级的期id查询对应的培训计划
      const trainplan = await this.tmodel.findOne({ 'termnum._id': _class.termid });
      const term = await trainplan.termnum.id(_class.termid);
      const batch = await term.batchnum.id(_class.batchid);
      const startdate = batch.startdate;
      const classname = _class.name;
      // 给班级所有学生发送邮件通知
      const students = await this.stumodel.find({ classid });
      for (const student of students) {
        const { email, name } = student;
        const subject = '吉林省高等学校毕业生就业指导中心通知';
        const text = name + '您好！\n欢迎参加由吉林省高等学校毕业生就业指导中心举办的“双困生培训会”。\n您所在的班级为：' + classname + '\n班级开课时间为：' + startdate;
        this.ctx.service.util.sendMail(email, subject, text);
      }
    }
  }
}

module.exports = ClassService;