'use strict';


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

class LessonService extends CrudService {
  constructor(ctx) {
    super(ctx, 'lesson');
    this.model = this.ctx.model.Lesson;
    this.tmodel = this.ctx.model.Trainplan;
    this.clamodel = this.ctx.model.Class;
    this.lmodel = this.ctx.model.Lessonmode;
    this.teamodel = this.ctx.model.Teacher;
    this.stumodel = this.ctx.model.Student;
    this.schmodel = this.ctx.model.School;
    this.headteamodel = this.ctx.model.Headteacher;
    this.umodel = this.ctx.model.User;
    this.nmodel = this.ctx.model.Notice;
  }

  // 自动排课私有方法
  async autolesson({ id }) {
    // 首先将课程表清空
    const res = await this.tmodel.findById(id);
    if (!res) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '全年计划信息不存在');
    }
    const terms = res.termnum;
    const _lessonmode = await this.lmodel.find();
    // 循环取得所有期
    for (const elm of terms) {
      // 根据期id清空课程表
      await this.model.deleteMany({ termid: elm.id });
      // 清空成功后，循环取得当前期下所有批次信息
      const batchs = elm.batchnum;
      for (const batch of batchs) {
        // 取得当前批次开始结束日期，并根据日期取得所有天数
        const sedays = await this.getAllDays(batch.startdate, batch.enddate);
        // 根据批次取得当前批次下所有班级
        const _classs = await this.clamodel.find({
          planid: id,
          termid: elm.id,
          batchid: batch.id,
        });
        // 循环班级
        const teachids = [];
        for (const cla of _classs) {
          // 取得课程模板信息
          let lessonmode_ = _.find(_lessonmode, { type: cla.type });
          if (!lessonmode_) {
            lessonmode_ = _lessonmode[0];
            if (!lessonmode_) {
              throw new BusinessError(
                ErrorCode.DATA_NOT_EXIST,
                '课程模板信息不存在'
              );
            }
          }
          // 取得模板内容并转化成json
          const lessons_ = JSON.parse(lessonmode_.lessons);
          // 记录天数
          let i = 1;
          // 循环天数
          const newlesson = [];
          for (const day of sedays) {
            // 循环课程模板，将模板信息排入班级课程表中
            for (const lessm of lessons_) {
              // 循环插入模板信息
              if (lessm['day' + i] !== '--') {
                let _subid = '';
                if (lessm['day' + i + 'type'] === '课程') {
                  _subid = lessm['day' + i + 'subid'];
                } else {
                  _subid = '';
                }
                let allday = 0;
                if (i === 6) {
                  // 判断是否有外市的学生有的时候 将其设置为半天
                  const ishalfday = await this.ishalfday(cla.id);
                  if (ishalfday) {
                    allday = 1;
                  }
                }

                const data = {
                  subid: _subid,
                  subname: lessm['day' + i],
                  date: day,
                  time: lessm.time,
                  day: allday,
                };
                // 将教师按照分数的综合成绩排序,上报时间,安排教师.
                const teacher_ = await this.autoteacher(_subid, teachids);
                if (teacher_) {
                  data.teaid = teacher_.id;
                  data.teaname = teacher_.name;
                  teachids.push(teacher_.id);
                }
                newlesson.push(data);
              }
            }
            i = i + 1;
          }
          const newdata = {
            termid: elm.id,
            batchid: batch.id,
            classid: cla.id,
            lessons: newlesson,
          };
          // 将课程信息填入课程表
          await this.model.create(newdata);
        }
      }
    }
  }

  // 自动排教师,按照分数的综合成绩排序,上报时间,安排教师
  async autoteacher(subid, teachids) {
    // 按照上报时间取得所有老师，进行正序排列
    const teachers = await this.teamodel
      .find({ subid, status: '4' })
      .sort({ zlscore: '-1', msscore: '-1', xsscore: '-1' });
    for (const teaid of teachids) {
      _.remove(teachers, item => item.id === teaid);
    }
    let teacher = {};
    if (teachers.length > 0) {
      teacher = teachers[0];
    }
    return teacher;
  }

  // 判断是否为半天
  async ishalfday(classid) {
    // 通过班级id取得所有学生
    const students = await this.stumodel.find({ classid });
    let res = false;
    for (const stu of students) {
      const sch = await this.schmodel.findOne({ code: stu.schid });
      if (sch && sch.hascar === '0') {
        res = true;
        break;
      }
    }
    return res;
  }

  // 取得日期间所有日期
  async getAllDays(begin_date, end_date) {
    const errArr = [],
      resultArr = [],
      dateReg = /^[2]\d{3}-[01]\d-[0123]\d$/;

    if (
      typeof begin_date !== 'string' ||
      begin_date === '' ||
      !dateReg.test(begin_date)
    ) {
      return errArr;
    }

    if (
      typeof end_date !== 'string' ||
      end_date === '' ||
      !dateReg.test(end_date)
    ) {
      return errArr;
    }

    try {
      const beginTimestamp = Date.parse(new Date(begin_date)),
        endTimestamp = Date.parse(new Date(end_date));

      // 开始日期小于结束日期
      if (beginTimestamp > endTimestamp) {
        return errArr;
      }

      // 开始日期等于结束日期
      if (beginTimestamp === endTimestamp) {
        resultArr.push(begin_date);
        return resultArr;
      }

      let tempTimestamp = beginTimestamp,
        tempDate = begin_date;

      // 新增日期是否和结束日期相等， 相等跳出循环
      while (tempTimestamp !== endTimestamp) {
        resultArr.push(tempDate);

        // 增加一天
        tempDate = moment(tempTimestamp).add(1, 'd').format('YYYY-MM-DD');

        // 将增加时间变为时间戳
        tempTimestamp = Date.parse(new Date(tempDate));
      }

      // 将最后一天放入数组
      resultArr.push(end_date);
      return resultArr;
    } catch (err) {
      return errArr;
    }
  }

  // 根据计划id、教师id查询所有班级信息
  async classbyteaid({ planid, teaid }) {
    // 取得传入的计划id与教师id
    // 根据计划id取得所有期
    const plan = await this.tmodel.findById(planid);
    if (!plan) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '全年计划信息不存在');
    }
    const terms = await plan.termnum;
    // 循环取得所有期信息
    const data = [];
    for (const term of terms) {
      // 根据期id与教师id查出课程班级信息
      const lessons = await this.model.find({
        termid: term.id,
        'lessons.teaid': teaid,
      });
      const batchs = await term.batchnum;
      for (const elm of lessons) {
        const newdata = {};
        const batch = await batchs.id(elm.batchid);
        newdata.planid = planid;
        newdata.title = plan.title;
        newdata.termid = elm.termid;
        newdata.term = term.term;
        newdata.batchid = elm.batchid;
        newdata.batch = batch.batch;
        newdata.classid = elm.classid;
        if (elm.classid) {
          const cla = await this.clamodel.findById(elm.classid);
          if (cla) {
            newdata.classname = cla.name;
          }
        }
        const _lessons = elm.lessons.filter(item => item.teaid === teaid);
        newdata.lessons = _lessons;
        data.push(newdata);
      }
    }
    return data;
  }

  // 根据计划id、教师id查询所有班级信息
  async teaclass({ planid, teaid }) {
    // 取得传入的计划id与教师id
    // 根据计划id取得所有期
    const plan = await this.tmodel.findById(planid);
    if (!plan) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '全年计划信息不存在');
    }
    const terms = await plan.termnum;
    // 循环取得所有期信息
    const data = [];
    for (const term of terms) {
      // 根据期id与教师id查出课程班级信息
      const lessons = await this.model.find({
        termid: term.id,
        'lessons.teaid': teaid,
      });
      for (const elm of lessons) {
        if (elm.classid) {
          const cla = await this.ctx.service.class.fetch({ id: elm.classid });
          data.push(cla);
        }
      }
    }
    return data;
  }

  async uplessones(data) {
    for (const _data of data) {
      await this.model.findByIdAndUpdate(_data.id, _data);
    }
  }
  /**
   * 修改课表的状态,并发送信息
   * @param {Array} ids 要修改的课表
   */
  async check({ ids }) {
    // 1,修改课表状态; TODO 2,拿到所有的班级,获取所有人员;3,然后发送信息
    const list = await this.model.find({ _id: { $in: ids } });
    const res = await this.model.updateMany({ _id: { $in: ids } }, { status: '1' });
    // 循环课表
    for (const lessonInfo of list) {
      // 获取期数
      const { termid, classid, lessons } = lessonInfo;
      const planRes = await this.tmodel.findOne({ termnum: { $elemMatch: { _id: termid } } });
      if (!planRes) continue;
      const term = planRes.termnum.find(f => ObjectId(termid).equals(f._id));
      if (!term) continue;
      const { term: termnum, batchnum } = term;
      let start;
      let end;
      if (batchnum) {
        const { startdate, enddate } = batchnum;
        if (startdate) start = startdate;
        if (enddate) end = enddate;
      }
      const classInfo = await this.clamodel.findById(classid);
      // 先查找信息,如果有,不需要创建,修改创建信息,获取数据
      const content = `欢迎参加由吉林省高等学校毕业生就业指导中心举办的"双困生培训会"第${termnum}期-${classInfo.name}${classInfo.name.includes('班') ? '' : '班'}${start ? `(${start}至${end})` : ''}`;
      let is_update = false;
      let nres = await this.nmodel.findOne({
        planyearid: planRes.planyearid,
        planid: planRes._id,
        termid,
        classid,
        noticeid: 'system',
        type: '4',
      });
      console.log(nres);
      let alreadyList = [];
      if (nres) {
        const { notified } = nres;
        alreadyList = notified.filter(i => i.status === '1');
        is_update = true;
      }
      if (!is_update) {
        nres = await this.nmodel.create({
          planyearid: planRes.planyearid,
          planid: planRes._id,
          termid,
          classid,
          noticeid: 'system',
          type: '4',
          content,
        });
      }

      const { headteacherid, lyteacherid } = classInfo;
      const headteacher = await this.headteamodel.findById(headteacherid);
      if (headteacher) {
        const r = await this.toSendMsg(headteacher, 'headteacher', termnum, nres._id, content, alreadyList);
        if (r && !is_update) nres.notified.push(r);
        else if (r && is_update) {
          const dr = nres.notified.find(f => f.notifiedid === r.notifiedid);
          if (!dr) nres.notified.push(r);
        }
      }
      // 礼仪教师和班主任不是一个人时查礼仪教师是班主任还是任课教师,然后发消息
      if (lyteacherid !== headteacherid) {
        let lyTeacher = await this.headteamodel.findById(lyteacherid);
        if (lyTeacher) {
          const r = await this.toSendMsg(lyTeacher, 'headteacher', termnum, nres._id, content, alreadyList);
          if (r && !is_update) nres.notified.push(r);
          else if (r && is_update) {
            const dr = nres.notified.find(f => f.notifiedid === r.notifiedid);
            if (!dr) nres.notified.push(r);
          }
        } else {
          lyTeacher = await this.teamodel.findById(lyteacherid);
          if (lyTeacher) {
            const r = await this.toSendMsg(lyTeacher, 'teacher', termnum, nres._id, content, alreadyList);
            if (r && !is_update) nres.notified.push(r);
            else if (r && is_update) {
              const dr = nres.notified.find(f => f.notifiedid === r.notifiedid);
              if (!dr) nres.notified.push(r);
            }
          }
        }
      }
      // 获取所有任课教师ids
      const teacherList = _.compact(_.uniq(lessons.map(i => i.teaid)));
      if (teacherList) {
        for (const tea of teacherList) {
          const teacher = await this.teamodel.findById(tea);
          if (!teacher) continue;
          const r = await this.toSendMsg(teacher, 'teacher', termnum, nres._id, content, alreadyList);
          if (r && !is_update) nres.notified.push(r);
          else if (r && is_update) {
            const dr = nres.notified.find(f => f.notifiedid === r.notifiedid);
            if (!dr) nres.notified.push(r);
          }
        }
      }
      nres.save();
    }
  }

  async toSendMsg(teacherInfo, type, term, nresid, content, alreadyList) {
    const r = alreadyList.find(f => ObjectId(f.notifiedid).equals(teacherInfo._id));
    if (r) return;
    let person = null;
    if (teacherInfo) {
      let email;
      if (type === 'headteacher') {
        const { qq } = teacherInfo;
        if (qq) email = `${qq}@qq.com`;
      } else {
        email = teacherInfo.email;
      }
      // 发邮件
      if (email) {
        // console.error(`${teacherInfo.name}-email:${email}`);
        const subject = '吉林省高等学校毕业生就业指导中心通知';
        const text = teacherInfo.name + `${content},请您尽快登陆双困生培训系统查看您的安排,系统邮件,请勿回复!`;
        this.ctx.service.util.sendMail(email, subject, text);
      }


      // 获取openid,推送
      const teacherUser = await this.umodel.findOne({ uid: teacherInfo._id });
      if (teacherUser) {
        const { openid } = teacherUser;
        if (openid) {
          const tourl = this.ctx.app.config.baseUrl + '/msgconfirm/?userid=' + teacherUser.uid + '&noticeid=' + nresid;
          // TODO 推送
          await this.ctx.service.weixin.sendTemplateDesign(
            this.ctx.app.config.REVIEW_TEMPLATE_ID,
            openid,
            '您有一个新的通知,请点击信息,确认您已收到信息!(若已确认,则无需理会)',
            '您有新的安排',
            content,
            '感谢您的使用',
            tourl
          );
          person = { notifiedid: teacherUser.uid, username: teacherUser.name };
        }
      }
    }
    return person;
  }

  // 新排课,从计划中拿出来对应的课表
  async newArrange({ planid, termid }) {
    const lmodelList = await this.lmodel.find();
    const trainplan = await this.tmodel.findById(planid);
    if (!trainplan) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '计划不存在');
    let { termnum } = trainplan;
    // 指定期的数据
    termnum = JSON.parse(JSON.stringify(termnum));
    if (!termnum) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '该期不存在');
    // 该期的课表,没有就添加
    await this.model.deleteMany({ termid });
    const sterm = termnum.find(f => f._id === termid);
    const { batchnum } = sterm;
    // 确保batchnum是数组
    if (!_.isArray(batchnum)) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '该期下批次数据错误');
    for (const b of batchnum) {
      const { _id: batchid, class: classArrange, type, startdate, enddate } = b;
      const classList = await this.clamodel.find({ planid, termid, batchid });
      // 确保list是数组
      if (!classList || classList.length === 0) continue;
      const clist = JSON.parse(JSON.stringify(classList));
      for (const c of clist) {
        // 排指定班
        const { name, ...lessinfo } = await this.partsOfClass(c);
        // 找到指定班级的安排 这里目前只能用name找,这个地方很不稳定,需要找到其他的具有唯一性的判断来执行这个find
        const clalr = classArrange.find(f => f.name === name);
        // 没找到指定班级的安排
        if (!clalr) {
          console.error('没有找到指定安排');
          continue;
        }
        const { lessons: ntemplate } = clalr;
        // 如果没有模板
        if (!ntemplate) {
          console.error('没有找到指定班级安排模板');
          continue;
        }
        // 根据班级类型找到原课表模板
        let lessonModel = lmodelList.find(f => f.code === type);
        lessonModel = JSON.parse(JSON.stringify(lessonModel));
        // 原模板
        let { lessons: otemplate } = lessonModel;
        otemplate = JSON.parse(otemplate);
        // 日期列表，感谢裕哥能给我留个可用的东西
        const dayList = await this.getAllDays(startdate, enddate);
        const lessons = [];
        for (let i = 0; i < dayList.length; i++) {
          for (const ot of otemplate) {
            const date = dayList[i];
            const { time } = ot;
            const keys = Object.keys(ot).filter(f => f.includes(`day${i + 1}`));
            const kvs = {};
            for (const key of keys) {
              // 将原课表的每日,每个时间段的安排整理成object
              if (key.startsWith('day') && key.endsWith('type')) {
                // console.log(`${key}=>${ot[key]}`);
                // kvs.type = ot[key];
              } else if (key.startsWith('day') && key.endsWith('subid')) {
                kvs.subid = ot[key];
              } else {
                kvs.subname = ot[key];
              }
            }
            // 整理完的object,如果有subid,就是课程,找教师
            const tsubid = _.get(kvs, 'subid');
            if (tsubid) {
              const r = ntemplate.find(f => f.subid === tsubid);
              if (r) {
                const { teaid, teaname } = r;
                if (teaid && teaname) {
                  kvs.teaid = teaid;
                  kvs.teaname = teaname;
                }
              }
            }
            const obj = { date, time, ...kvs };
            lessons.push(obj);
          }

        }
        // 最后整合
        const classLesson = { ...lessinfo, lessons };
        // 保存
        await this.model.create(classLesson);
      }
    }

  }

  // 新排课,将班级层面处理抽出来
  async partsOfClass(classinfo) {
    classinfo = JSON.parse(JSON.stringify(classinfo));
    const { termid, batchid, _id: classid, name } = classinfo;
    const obj = { termid, batchid, classid, name };
    return obj;
  }

}

module.exports = LessonService;