// pages/mark_detail/mark_detail.js
const app = getApp();
const AV = require("../../lib/av-live-query-weapp-min");
const {jsonify} = require("../../utils/leancloudutils")
Page({

  /**
   * 页面的初始数据
   */
  students_login_name: {},
  data: {
    grades: [],
    loading: true,
    exercises: [],
    navData: [
      {
        text: "全部",
        login: "*"
      },
      {
        text: '我的',
        login: app.client.current_user.login
      },
    ],
    currentTab: 0,
    navScrollLeft: 0
  },
  //@todo: 退出课堂姓名的获取？？
  pull_students:function(){
    //@todo limit：20=>solve
    return app.client.get_course_students({course_id: this.course_id})
    .then(res=>{
      let students = res.data.students;
      for(var student of students){
        this.students_login_name[student.login] = student.name;
      }
      console.log(this.students_login_name);
    })
  },
  pull_grades: function(){
    let query = new AV.Query("Grade");
    query.equalTo("edu_course_id", this.course_id);
    return query.find().then(grades=>{
      console.log(grades);
      console.log(this.students_login_name);
      grades = grades.filter(grade=>{console.log(grade.edu_account_login);return grade.edu_account_login in this.students_login_name});
      grades = grades.map(grade=>{
        grade.set("name", this.students_login_name[grade.edu_account_login]);
        grade = grade.toJSON();
        grade["time"]=grade["createdAt"].slice(0, 10);
        return grade;
      });
      this.setData({grades});
      console.log(this.data);
    })
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    this.course_id = options.course_id;
    this.course_id = "3518"
    console.log(this.course_id);
    this.pull_students().then(this.pull_grades);
  },

  /**
   * 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 () {

  },
  switchNav(event) {
    var cur = event.currentTarget.dataset.current;
    //每个tab选项宽度占1/5
    var singleNavWidth = this.data.windowWidth / 3;
    //tab选项居中                            
    this.setData({
      navScrollLeft: (cur - 1) * singleNavWidth
    })
    if (this.data.currentTab == cur) {
      return false;
    } else {
      this.setData({
        currentTab: cur
      })
    }
  },
  switchTab(event) {
    var cur = event.detail.current;
    var singleNavWidth = this.data.windowWidth / 5;
    this.setData({
      currentTab: cur,
      navScrollLeft: (cur - 1) * singleNavWidth
    });
  }
})