'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;
    this.gmodel = this.ctx.model.Group;
    this.heamodel = this.ctx.model.Headteacher;
    this.teamodel = this.ctx.model.Teacher;
    this.locamodel = this.ctx.model.Location;
  }

  async divide(data) {
    const { planid, termid } = data;
    assert(planid, '计划id为必填项');
    assert(termid, '期id为必填项');
    // 先自动生成班级
    await this.autoclass(planid, termid);
    // 根据计划id与期id查询所有批次下的班级
    const newclass = await this.model.find({ planid, termid });
    if (!newclass) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '班级信息不存在');
    }
    // 根据计划和期查询所有上报的学生 并按照学校排序
    const newstudent = await this.stumodel.find({ termid }).sort({ schid: 1 });
    if (!newstudent) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '学生信息不存在');
    }
    let _students = _.map(newstudent, 'id');
    for (const _class of newclass) {
      // 取得班级人数
      const stunum = _class.number;
      // 取出相同类型的学生
      const studentids = await this.getstutype(_students, _class.type);
      // 取出班级人数下的学生id
      const beforestu = _.take(studentids, stunum);
      // 将取出的数据调用更新学生的班级信息方法
      await this.studentup(_class.id, _class.batchid, beforestu);
      // 将班级自动分为组
      await this.groupcreate(termid, _class.batchid, _class.id);
      // 取出的学生数据从原数据中删除
      _students = _.difference(_students, beforestu);
    }
    //  判断学生是否有剩余
    const stulen_ = _students.length;
    if (stulen_ > 0) {
      // 判断共有多少班级
      // 判断学生数与班级数，当小于或等于班级数 将班级直接分配给学生
      const classlength = newclass.length;
      // 循环取得学生id并分配班级
      let cindex_ = 0;
      for (const stuid of _students) {
        const student = await this.stumodel.findById(stuid);
        if (student) {
          const cla_ = newclass[cindex_];
          student.classid = cla_.classid;
          student.batchid = cla_.batchid;
          await student.save();
          cindex_ = cindex_ + 1;
          if (cindex_ === classlength - 1) {
            cindex_ = 0;
          }
        }
      }

    }
  }

  // 取得同样类型的学生
  async getstutype(_students, type) {
    const data = [];
    for (const stuid of _students) {
      const student = await this.stumodel.findById(stuid);
      if (student && student.type === type) {
        data.push(stuid);
      }
    }
    return data;
  }

  // 自动生成班级私有方法
  async autoclass(planid, termid) {
    // 删除所有计划下的班级
    await this.model.deleteMany({ planid, termid });
    // 根据批次id取得当前批次具体信息
    const res = await this.tmodel.findById(planid);
    if (!res) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '全年计划信息不存在');
    }
    // 循环出所有班级进行添加操作
    const term = await res.termnum.id(termid);
    let yclocationid = ''; // 用餐地点
    let kzjhlocationid = ''; // 拓展计划地点
    let kbyslocationid = ''; // 开班仪式地点
    let jslocationid = ''; // 教室位置
    const locations = await this.locamodel.find();
    const jslocationids = _.filter(locations, { type: '0' });
    const kbyslocationids = _.filter(locations, { type: '1' });
    const kzjhlocationids = _.filter(locations, { type: '2' });
    const yclocationids = _.filter(locations, { type: '3' });
    for (const batch of term.batchnum) {
      const classs = await batch.class;
      for (const cla of classs) {
        // 取得班级各个地点
        // 同一地点同期只能使用一次
        if (jslocationids.length > 0) {
          jslocationid = jslocationids[0].id;
          _.remove(jslocationids, { id: jslocationid });
        }
        if (kbyslocationids.length > 0) {
          kbyslocationid = kbyslocationids[0].id;
          _.remove(kbyslocationids, { id: kbyslocationid });
        }
        if (kzjhlocationids.length > 0) {
          kzjhlocationid = kzjhlocationids[0].id;
          _.remove(kzjhlocationids, { id: kzjhlocationid });
        }
        if (yclocationids.length > 0) {
          yclocationid = yclocationids[0].id;
          _.remove(yclocationids, { id: yclocationid });
        }
        const newdata = { name: cla.name, number: cla.number, batchid: batch.id, termid: term.id, planid: res.id, type: cla.type, headteacherid: cla.headteacherid, jslocationid, kbyslocationid, kzjhlocationid, yclocationid };
        await this.model.create(newdata);
      }
    }
  }

  // 根据传入的学生列表和班级id更新学生信息
  async studentup(classid, batchid, beforestu) {
    // 循环学生id
    for (const stuid of beforestu) {
      const student = await this.stumodel.findById(stuid);
      if (student) {
        student.classid = classid;
        student.batchid = batchid;
        await student.save();
      }
    }
  }

  // 自动分组
  async groupcreate(termid, batchid, classid) {
    const group = await this.gmodel.find({ termid, batchid, classid });
    if (group.length === 0) {
      for (let i = 1; i < 8; i++) {
        const name = i + '组';
        const newdata = { name, termid, batchid, classid };
        await this.gmodel.create(newdata);
      }
    }
  }

  // 根据传入的学生列表和班级id更新学生信息
  async studentupclass({ id }, data) {
    assert(id, '班级id为必填项');
    // 根据全年计划表id查出对应的全年计划详细信息
    const trainplan = await this.tmodel.findOne({ 'termnum.batchnum.class._id': ObjectId(id) });
    if (!trainplan) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '全年计划信息不存在');
    }
    // 取得计划期批次信息
    let termid = '';
    let batchid = '';
    let classname = '';
    let class_ = {};
    for (const term of trainplan.termnum) {
      for (const batch of term.batchnum) {
        const _class = await batch.class.id(id);
        if (_class) {
          termid = term.id;
          batchid = batch.id;
          classname = _class.name;
          class_ = _class;
          break;
        }
      }
    }
    if (!class_) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '班级信息不存在');
    }
    let classid_ = '';
    if (classname) {
      const cla_ = await this.model.findOne({ termid, batchid, name: classname });
      if (cla_) {
        classid_ = cla_.id;
      } else {
        const newdata = {
          name: class_.name,
          number: class_.number,
          batchid,
          termid,
          planid: trainplan.id,
          type: class_.type,
        };
        const rescla = await this.model.create(newdata);
        if (rescla) {
          classid_ = rescla.id;
        }
      }
    }
    if (classid_) {
      // 循环学生id
      for (const stuid of data) {
        const student = await this.stumodel.findById(stuid);
        if (student) {
          student.classid = classid_;
          await student.save();
        }
      }
    }

  }

  async notice(data) {
    for (const classid of data.classids) {
      // 根据班级id找到需要通知的班级
      const _class = await this.model.findById(classid);
      const { headteacherid } = _class;
      // 根据班级id找到对应的课程表
      const lesson = await this.lessmodel.findOne({ classid });
      if (lesson) {
        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' });
          if (_teacher) {
            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' });
        if (_headteacher) {
          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);
        }
      }
    }
  }

  async uptea(data) {
    for (const _data of data) {
      const classInfo = await this.model.findById(_data.id);
      classInfo.headteacherid = _data.headteacherid;
      await classInfo.save();
    }
  }

  async query({ skip, limit, ...info }) {
    const classes = await this.model.find(info).skip(Number(skip)).limit(Number(limit));
    const data = [];
    for (const _class of classes) {
      const classInfo = await this.fetch({ id: _class.id });
      data.push(classInfo);
    }
    return data;
  }

  async fetch({ id }) {
    const classInfo = _.cloneDeep(JSON.parse(JSON.stringify(await this.model.findById(id))));
    const trainplan = await this.tmodel.findById(classInfo.planid);
    if (trainplan) {
      const term = _.filter(trainplan.termnum, item => item.id === classInfo.termid);
      if (term.length > 0) {
        classInfo.term = term[0].term;
        const batch = _.filter(term[0].batchnum, item => item.id === classInfo.batchid);
        if (batch.length > 0) {
          classInfo.batch = batch[0].batch;
          classInfo.startdate = batch[0].startdate;
          classInfo.enddate = batch[0].enddate;
        }
      }
    }
    if (classInfo.yclocationid) {
      classInfo.yclocation = (await this.locamodel.findById(classInfo.yclocationid)).name;
    }
    if (classInfo.kzjhlocationid) {
      classInfo.kzjhlocation = (await this.locamodel.findById(classInfo.kzjhlocationid)).name;
    }
    if (classInfo.kbyslocationid) {
      classInfo.kbyslocation = (await this.locamodel.findById(classInfo.kbyslocationid)).name;
    }
    if (classInfo.jslocationid) {
      classInfo.jslocation = (await this.locamodel.findById(classInfo.jslocationid)).name;
    }
    if (classInfo.headteacherid) {
      classInfo.headteacher = (await this.heamodel.findById(classInfo.headteacherid)).name;
    }
    if (classInfo.lyteacherid) {
      let res = await this.teamodel.findById(classInfo.lyteacherid);
      if (!res) res = await this.heamodel.findById(classInfo.lyteacherid);
      if (res)classInfo.lyteacher = res.name;
    }
    return classInfo;
  }

  async upclasses(data) {
    for (const _data of data) {
      await this.model.findByIdAndUpdate(_data.id, _data);
    }
  }

  async classinfo({ id: classid }) {
    const _classes = await this.model.findById(classid);
    // 班级信息
    const classes = _.cloneDeep(JSON.parse(JSON.stringify(_classes)));
    // 学生信息
    const students = await this.stumodel.find({ classid });
    // 所有用户信息
    const users = await this.umodel.find();
    if (students) {
      for (const stu of students) {
        const user = users.find(item => item.uid === stu.id);
        if (user && user.openid) {
          const _stu = _.cloneDeep(JSON.parse(JSON.stringify(stu)));
          _stu.hasuserinfo = '1';
          _.remove(students, stu);
          students.push(_stu);
        }
      }
      classes.students = students;
    }
    // 班主任信息
    let headteacher;
    if (classes.headteacherid) {
      headteacher = await this.heamodel.findById(classes.headteacherid);
    }
    // 礼仪课老师信息
    let lyteacher;
    if (classes.lyteacherid) {
      lyteacher = await this.heamodel.findById(classes.lyteacherid);
      if (!lyteacher) {
        lyteacher = await this.teamodel.findById(classes.lyteacherid);
      }
    }
    // 教课老师信息
    let teachers = [];
    const lessones = await this.lessmodel.findOne({ classid });
    if (lessones) {
      for (const lesson of lessones.lessons) {
        if (lesson.teaid) {
          const teacher = await this.teamodel.findById(lesson.teaid);
          teachers.push(teacher);
        }
      }
    }
    teachers.push(lyteacher);
    teachers.push(headteacher);
    teachers = _.uniq(_.compact(teachers));
    for (const tea of teachers) {
      const user = users.find(item => item.uid === tea.id);
      console.log(user);
      if (user && user.openid) {
        const _tea = _.cloneDeep(JSON.parse(JSON.stringify(tea)));
        _tea.hasuserinfo = '1';
        _.remove(teachers, tea);
        teachers.push(_tea);
      }
    }
    classes.teachers = teachers;
    return classes;
  }
}

module.exports = ClassService;