// pages/targetList/targetList.js
const app = getApp()
const util = require("../../utils/util")
const urlDef = require("../../utils/urls")
Page({

  /**
   * 页面的初始数据
   */
  data: {
    source: null,
    target: null,
    dayScope: 7,// 默认 7 天
    action: 0,
    list: [
    ],
    beginDate: null,
    endDate: null,
    teacherLeaveDates: [],
    holidays: []
  },

  showChoose: function () {
    this.selectComponent("#classList").showChoose()
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    wx.showLoading({
      title: '正在加载数据 ...',
      mask: true
    })
    let o = JSON.parse(options.data)
    let s = o.source
    let t = o.target
    if (t == null || t == undefined) {
      t = {}
    }

    let _dayScope = o.dayScope
    if (_dayScope) {
      this.setData({ dayScope: _dayScope })
    }
    this.setData({ source: s, target: t, action: o.action })
    let now = new Date();
    // 从第2天开始，14天内的课程
    let bdd = new Date(now.setDate(now.getDate() + 1));
    let bd = util.formatTime(bdd).substring(0, 10).replace(/\//g, '-')
    let edd = new Date(now.setDate(now.getDate() + this.data.dayScope));
    let ed = util.formatTime(edd).substring(0, 10).replace(/\//g, '-')
    this.setData({ beginDate: bd, endDate: ed, list: [] });

    this.queryList()
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {
  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {

  },
  queryList: function () {
    const urls = urlDef.urls;
    let stu = wx.getStorageSync('student')

    // 先查询节假日数据，包含在节假日里面的所有课程，将不显示
    util.apiPost(urls.get_holidays + '&q.companyId=' + stu.orgId).then((rs) => {
      this.holidays = rs;
      this.setData({ holidays: rs })
      util.apiPost(urls.get_teacherLeave + '&q.orgId=' + stu.orgId).then((rs) => {
        this.setData({ teacherLeaveDates: rs })
        this.queryClassList()
      });
    });
  },
  queryClassList: function () {
    const urls = urlDef.urls;
    let stu = wx.getStorageSync('student')

    let classItem = [];
    let allWeekTask = {};
    // 按星期分组
    const dayTime = 86400000;
    let tbd = new Date(this.data.beginDate);
    let ted = new Date(this.data.endDate);
    // 算出两个日期一共有多少天;
    let days = Math.ceil((ted.getTime() - tbd.getTime()) / dayTime) + 1;
    let weeks = Math.ceil(days / 7);
    for (let i = 0; i < weeks; i++) {
      let tempDate = new Date(this.data.beginDate);
      tempDate.setDate(tempDate.getDate() + i * 7);
      let weekTask = {};
      weekTask.complete = false;
      weekTask.beginDate = this.formateDate(tempDate);
      tempDate.setDate(tempDate.getDate() + 6);
      if (tempDate.getTime() > ted.getTime()) {
        tempDate = ted;
      }
      weekTask.endDate = this.formateDate(tempDate);
      weekTask.weekMap = this.initWeek(weekTask);
      allWeekTask['week' + i] = weekTask;
    }

    for (let weekKey in allWeekTask) {
      let weekTask = allWeekTask[weekKey];
      // 查询
      let item = this.data.source
      let params = {
        'q.courseId': item.courseId,
        'q.classesId': item.classesId,
        'q.beginDate': weekTask.beginDate,
        'q.endDate': weekTask.endDate,
        'q.classromeId': item.classRoomId,
        'q.studentId': stu.studentId,
        'q.oldTeacherId': item.teacherId,
        'q.kindId': item.kindId,
        'q.level': (item.level ? item.level : ''),
        'q.orgId': stu.orgId
      };
      util.apiPost(urls.get_switch_course_list, params).then((rs) => {
        weekTask.data = rs;
        weekTask.complete = true;
        weekTask.list = this.filterList(weekTask);

        // 每次查询完，检查所有的请求执行完没有
        let allTaskOver = true;
        for (let wk in allWeekTask) {
          if (allWeekTask[wk].complete) {
          } else { // 只要有一个没执行完，就都没执行完
            allTaskOver = false;
            break;
          }
        }
        if (allTaskOver) {
          classItem = [];
          for (let weekKey in allWeekTask) {
            let weekTask = allWeekTask[weekKey];
            classItem.push.apply(classItem, weekTask.list);
          }
          let data = [];
          classItem.forEach(item => {
            let day = item.newDate;
            let o;
            data.some(d => {
              if (d.day === day) {
                o = d;
                return true;
              }
            });
            if (!o) {
              o = {};
              o.day = day;
              data.push(o);
            }
          });
          // 按日期排序
          data.sort((a, b) => {
            return (parseInt(a.day.replace(/-/g, ''), 10) - parseInt(b.day.replace(/-/g, ''), 10));
          });

          data.forEach(item => {
            let items = [];
            classItem.forEach(i => {
              if (i.newDate === item.day) {
                i.bt = i.beginTime
                i.et = i.endTime
                items.push(i);
              }
            });
            items.sort((a, b) => {
              return (parseInt(a.beginTime.replace(/:/g, ''), 10) - parseInt(b.beginTime.replace(/:/g, ''), 10));
            });
            item.items = items;
            item.date = item.day.substring(0, 10)
            item.week = this.getWeek(item.date)
          });
          classItem = data;
          this.setData({ list: classItem })

          wx.hideLoading()
        }

      })
    }
  },
  exceptHoliday: function (d) {
    let result = true;
    this.data.holidays.some(r => {
      if (r.holidayDate === d) {
        result = false;
        return true;
      }
    });
    return result;
  },
  exceptTeacheLeave: function (d) {
    // 老师请假中的课程不显示
    let result = true;
    this.data.teacherLeaveDates.some(r => {
      let leaveBeginTime = this.dateToNumber(r.beginTime);
      let leaveEndTime = this.dateToNumber(r.endTime);
      let beginTime = this.dateToNumber(d.newDate + d.beginTime);
      let endTime = this.dateToNumber(d.newDate + d.endTime);
      if (r.teacherId === d.teacherId && ((beginTime >= leaveBeginTime && beginTime <= leaveEndTime) || (endTime >= leaveBeginTime && endTime <= leaveEndTime))) {
        result = false;
        return true;
      }
    });
    return result;
  },
  getDay: function (week, weekMap) {
    let result = null;
    weekMap.some(r => {
      if (r.week === week) {
        result = r.ymd;
        return true;
      }
    });
    return result;
  },
  formateDate: function (d) {
    return d.getFullYear() + '-' + this.addZero(d.getMonth() + 1) + '-' + this.addZero(d.getDate());
  },
  dateToNumber: function (d) {
    if (d) {
      return parseInt(d.replace(/-/g, '').replace(/:/g, '').replace(/\s+/g, ''), 10);
    } else {
      return 0;
    }
  },
  addZero: function (n) {
    return (parseInt(n, 10) >= 10 ? '' : '0') + n;
  },
  initWeek: function (weekTask) {
    let weekMap = [];
    const bd = new Date(weekTask.beginDate);
    const ed = new Date(weekTask.endDate);
    while (bd.getTime() <= ed.getTime()) {
      weekMap.push({ week: bd.getDay(), ymd: this.formateDate(bd) });
      bd.setDate(bd.getDate() + 1);
    }
    return weekMap;
  },
  len: function (o) {
    return (o == null || o === undefined) ? 0 : o.length;
  },
  filterList: function (weekTask) {
    let items = [];
    weekTask.data.forEach((it) => {
      if (it.classes) {
        it.classes.forEach(c => {
          let item = c;
          item.classesName = c.name;
          item.address = c.address;
          item.roomName = c.roomName;

          let tempItems = [];
          if (this.len(c.beginTime) > 0) {
            let bt = c.beginTime.replace('T', ' ').substring(0, 16)
            item.newDate = bt.substring(0.10)
            item.beginTime = bt.substring(11);
            item.endTime = this.addZero(it.endHours) + ':' + this.addZero(it.endMinutes);
            tempItems.push(item);
          } else { // 没有真实排课
            item.beginTime = this.addZero(it.beginHours) + ':' + this.addZero(it.beginMinutes);
            item.endTime = this.addZero(it.endHours) + ':' + this.addZero(it.endMinutes);
            // 服务端返回的2345671 表示 周一到周日
            // 此处是     1234567 表示 周一到周日
            let d = this.getDay(it.week - 1, weekTask.weekMap);
            if (d != null) {
              item.newDate = d;
              tempItems.push(item);
            }
          }
          tempItems.forEach(item => {
            if (item.classStatus === '1' && this.exceptHoliday(item.newDate) && this.exceptTeacheLeave(item)) { // 未满班的才允许调课 && 不在假节日中的课程
              items.push(item);
            }
          });
        });
      }
    });
    return items;
  },
  getWeek: function (d) {
    return '星期' + '天一二三四五六'.charAt(new Date(d).getDay());
  }
})