'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;
const moment = require('moment');

class TeaplanService extends CrudService {
  constructor(ctx) {
    super(ctx, 'teaplan');
    this.model = this.ctx.model.Teaplan;
    this.hmodel = this.ctx.model.Headteacher;
    this.tmodel = this.ctx.model.Trainplan;
    this.cmodel = this.ctx.model.Class;
    this.dmodel = this.ctx.model.Department;
    this.submodel = this.ctx.model.Subject;
    this.teamodel = this.ctx.model.Teacher;
  }

  // 查询所有班主任带是否能带班标记
  async findteacher({ planid, termid, batchid }) {
    // 查询所有班主任信息
    const headteachers = await this.hmodel.find();
    // 根据批次id取得当前批次具体信息
    const trainplan = await this.tmodel.findById(planid);
    if (!trainplan) {
      throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '全年计划信息不存在');
    }
    const term = await trainplan.termnum.id(termid);
    if (!term) {
      throw new BusinessError(
        ErrorCode.DATA_NOT_EXIST,
        '全年计划内期信息不存在'
      );
    }
    const batch = await term.batchnum.id(batchid);
    if (!batch) {
      throw new BusinessError(
        ErrorCode.DATA_NOT_EXIST,
        '全年计划内批次信息不存在'
      );
    }
    const newheadteachers = [];
    // 遍历班主任信息
    for (const headteacher of headteachers) {
      // 查询某班主任对应的班主任全年计划表
      const teaplan = await this.model.findOne({
        headteacherid: headteacher.id,
      });
      if (teaplan) {
        // 取得所有不能排班的日期列表
        const nodates = teaplan.nodate;
        const iswork = await this.teacheriswork(
          nodates,
          batch.startdate,
          batch.enddate
        );
        if (iswork) {
          newheadteachers.push(headteacher);
        } else {
          newheadteachers.push({
            ...JSON.parse(JSON.stringify(headteacher)),
            disabled: true,
          });
        }
      } else {
        newheadteachers.push(headteacher);
      }
    }
    return newheadteachers;
  }

  // 判断当前日期是否在两个日期之间
  async betweendate(curdate, startdate, enddate) {
    // 比较开始日期，如果小于0 为不在此区间
    // 比较结束日期 如果大于0 为不在此区间
    const sres = moment(curdate).diff(moment(startdate), 'days');
    const eres = moment(curdate).diff(moment(enddate), 'days');
    let result = true;
    if (sres < 0 || eres > 0) {
      result = false;
    }
    return result;
  }

  // 判断班主任不能带班日期是否在批次日期里
  async teacheriswork(nodates, startdate, enddate) {
    let result = true;
    for (const nodate of nodates) {
      const res = await this.betweendate(nodate, startdate, enddate);
      if (res) {
        result = false;
        break;
      }
    }
    return result;
  }

  async divide({ trainplanid }) {
    const data = [];
    // 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.findById(trainplanid);
    // 查询本培训计划中班主任全年计划表的全部信息
    const teaplanList = await this.model.find({ trainplanid });
    // 查询所有班主任信息
    const headteacherList = await this.hmodel.find();
    // for (const teaplan of teaplanList) {
    //   // 过滤出班主任信息表中id为此班主任全年计划信息班主任id的数据
    //   const headteacherInfo = _.filter(headteacherList, item => item.id === teaplan.headteacherid);
    //   // 如果班主任信息列表中班主任上报了班主任全年计划，将其移除
    //   if (headteacherInfo.length === 0) {
    //     _.remove(headteacherList, item => item.id === teaplan.headteacherid);
    //   }
    // }
    // 遍历所有批次信息
    // 将全年计划中的批次信息取出放在一个数组中
    for (const term of trainplan.termnum) {
      for (const batch of term.batchnum) {
        const teaListAll = _.cloneDeep(
          JSON.parse(JSON.stringify(headteacherList))
        );
        for (const teaplan of teaplanList) {
          if (teaplan.nodate && teaplan.nodate.length > 0) {
            // 遍历班主任全年计划表中的不能上课的日期
            for (const nodate of teaplan.nodate) {
              // 如果不能上课的日期在该批次的开始时间和结束时间中，将该班主任从班主任列表中删除
              if (
                moment(nodate).isBetween(
                  batch.startdate,
                  batch.enddate,
                  null,
                  '[]'
                )
              ) {
                // const headteacher_ = await this.hmodel.findById(teaplan.headteacherid);
                // if (headteacher_) {
                //   teaListAll.push(headteacher_);
                // }
                _.remove(
                  teaListAll,
                  item => item.id === teaplan.headteacherid
                );
              }
            }
          }
        }
        // 将班主任排班次数填入数组中
        let teaListAll_ = [];
        for (const teac of teaListAll) {
          // 计算出每个班主任担任过班主任的次数
          const teacount = await this.cmodel.count({ headteacherid: teac.id });
          const newdata = { ...JSON.parse(JSON.stringify(teac)), teacount };
          teaListAll_.push(newdata);
        }
        // 将班主任按排次数排序
        teaListAll_ = _.orderBy(teaListAll_, [ 'teacount' ], [ 'asc' ]);
        // 查出该批次下所有的班级

        const classList = await batch.class;
        console.log(classList);
        for (const _class of classList) {
          // 取出所有部门和部门可用人数
          const departmentList = await this.departmentcount(teaListAll_);
          let index = 0;
          for (const _tea of teaListAll_) {
            // 过滤出当前教师的部门和部门可用人数
            const deptinfo = _.find(departmentList, function(o) {
              return o.deparmentid === _tea.department;
            });
            if (deptinfo.dcount - index > 1) {
              _class.headteacherid = _tea.id;
              _.remove(teaListAll_, item => item.id === _tea.id);
              _.remove(teaListAll, item => item.id === _tea.id);
              index = index + 1;
              break;
            }
          }
        }
      }
    }
    return await trainplan.save();
  }

  // 判断两个时间段是否有重合部分
  async isrepeat(startdate1, enddate1, startdate2, enddate2) {
    let result = true;
    if (moment(enddate1).isSameOrBefore(startdate2)) {
      result = false;
    }
    if (moment(startdate1).isSameOrAfter(enddate2)) {
      result = false;
    }
    return result;
  }

  // 查询传递的班主任列表中每个部门的人数以及每个部门的总人数
  // teaList 传递的教师列表  dnum 传递的教师列表中各部门的人数  dcount 各部门的总人数
  async departmentcount(teaList) {
    let departmentList = [];
    for (const teaplan of teaList) {
      departmentList.push({ deparmentid: teaplan.department });
    }
    // 将数组去重
    departmentList = _.uniqWith(departmentList, _.isEqual);
    for (const department of departmentList) {
      // 计算出能该批次能上课的班主任中各部门有多少人
      const dnum = _.filter(
        teaList,
        item => item.department === department.deparmentid
      ).length;
      department.dnum = dnum;
      // 计算出各部门有多少人
      const dcount = await this.hmodel.count({
        department: department.deparmentid,
      });
      department.dcount = dcount;
    }
    return departmentList;
  }

  async arrangeteacher({ planid }) {
    const trainplan = await this.tmodel.findOne({ id: planid });
    if (!trainplan) { throw new BusinessError(ErrorCode.DATA_EXISTED, '年度计划不存在'); }
    // 查找所有教师列表
    const teacherList = await this.teamodel.find();
    // 查找所有教师上报列表
    const teaplanList = await this.model.find();
    // 课程
    const subjectList = await this.submodel.find();
    const termList = _.cloneDeep(trainplan.termnum);
    const { termnum } = termList;
    if (!termnum) return;
    // 整理出课表
    const arr = [];
    for (const t of termnum) {
      const { batchnum, term, _id: termid } = t;
      // 班级和课程一一匹配显示在列表上
      for (const b of batchnum) {
        const { class: classes, lessons, startdate, enddate, _id: batchid } = b;
        const claslesList = this.setList(term, termid, batchid, classes, lessons);
        arr.push(...claslesList);
      }
    }
    // 安排后的课表
    const afterList = [];
    // 排课
    for (const l of arr) {
      const { termid, subid, day: date, teaid } = l;
      if (teaid) { afterList.push(l); continue; }
      const subject = subjectList.find(f => ObjectId(subid).equals(f._id));
      if (subject.need_teacher !== '0') continue;
      // 申请该天,该科目的教师,并查出教师的名字,分数;并按分数排序
      let applyList = teaplanList.filter(f => f.termid === termid && f.subid === subid && f.date === date);
      applyList = applyList.map(i => {
        const r = this.teacherList.find(f => ObjectId(i.teacherid).equals(f._id));
        if (r) {
          const { name: teaname, xsscore: score } = r;
          i.teaname = teaname;
          i.score = score * 1;
        }
        return i;
      });
      applyList = _.orderBy(applyList, [ 'score' ], [ 'desc' ]);
      // 依次循环申请的教师列表,往这个课程安排中放教师
      for (const atea of applyList) {
        // 先查询,该教师,是否在今天有安排
        const tr = afterList.find(f => f.teaid === atea.teacherid && f.day === atea.date);
        if (tr) continue;
        else {
          l.teaid = tr.teacherid;
          l.teaname = tr.teaname;
          break;
        }
      }
      afterList.push(l);
    }
    // 将afterList还原回正常的termnum
    let newTermnum = [];
    for (const l of afterList) {
      const { termid, batchid, classid, ...info } = l;
      const updata = _.pick(info, [ 'day', 'subid', 'subname', 'teaid', 'teaname', 'time' ]);
      newTermnum = trainplan.termnum.map(t => {
        // 找到期
        if (ObjectId(termid).equals(t._id)) {
          t.batchnum = t.batchnum.map(b => {
            if (ObjectId(batchid).equals(b._id)) {
              // 找到批次
              b.class = b.class.map(c => {
                if (ObjectId(classid).equals(c._id)) {
                  if (c.lessons) {
                    // 说明有课程安排,找有没有重复的,没有就推进去,有就更改,subid查
                    const r = c.lessons.find(f => f.subid === updata.subid);
                    if (r) {
                      const rindex = c.lessons.findIndex(
                        f => f.subid === updata.subid
                      );
                      c.lessons[rindex] = updata;
                    } else {
                      c.lessons.push(updata);
                    }
                  } else {
                    // 说明没有课程安排,放进去一条保存
                    c.lessons = [ updata ];
                  }
                }
                return c;
              });
            }
            return b;
          });
        }
        return t;
      });
    }
    // 保存至计划
    trainplan.termnum = newTermnum;
    return await trainplan.save();
  }


  setList(term, termid, batchid, classes, lessonTemplate) {
    const arr = [];
    // 班级和课程匹配
    for (const cla of classes) {
      cla.term = term;
      cla.termid = termid;
      cla.batchid = batchid;
      const { lessons } = cla;
      if (!lessons) cla.lessons = lessonTemplate;
      cla.lessons.map(i => {
        let obj = _.omit(cla, [ 'lessons' ]);
        obj = { ...obj, ...i, classid: _.clone(cla._id) };
        arr.push(obj);
      });
    }
    return arr;
  }
}

module.exports = TeaplanService;