pk8f3pmu2/miniprogram/exercise/pages/exercise/exercise.js

import {throttle} from "../../../js/utils";

const app = getApp();
Page({

  data: {
    exercise_questions: [],
    loading: true,
    exercise: {},
    count_down:'试卷不限时'
  },
  scrollToAnswerSheet(){
    wx.pageScrollTo({
      selector:".exercise-status"
    })
  },
  scrollToQues(e){
    let {target: {dataset:{ques_id}}} = e;
    console.log(ques_id);
    if(!ques_id) return;
    wx.pageScrollTo({
      selector:"#q-"+ques_id
    });
  },
  onAnswer(e){
    console.log(e);
    let {detail:{q_position,answered}} = e;
    let key = "question_status[" + (q_position - 1) +"].ques_status"
    this.setData({[key]: answered});
    this.refreshAnsweredCount();
  },
  startCountDown({left_time}){
    var left = left_time;
    var setCountDown = (time)=>{
      let s = time%60;
      let m = parseInt(time/60)%60;
      let h = parseInt(time/3600);
      if(s<10)
        s = '0' +s;
      if(m<10)
        m = '0' + m;
      if(h<10)
        h = '0' + h;
      let count_down = h + ":" + m + ":" + s;
      this.setData({count_down});
    }
    setCountDown(--left);
    var id = setInterval(()=>{
      if(left<=1){
        return this.stopCountDown(id);
      }
      setCountDown(--left);
    },1000);
  },
  stopCountDown(id){
    clearInterval(id);
    var showToast = throttle(wx.showToast, 800, {});//延时Toast
    showToast({
      title: '时间已到，系统自动为你提交中',icon:"none"
    })
    app.api("exercises.commit_exercise")({exercise_id:this.exercise_id, commit_method:2})
    .then(res=>{
      showToast({
        title: "试卷提交成功！"
      });
      //this.pull_questions();
    }).catch(e=>{
      //app.showError(e);
      var title = '提交失败';
      //if(e.code==-2)
      //  title = '您未作答任何题';
      showToast({
        title,
        icon:"none"
      });
      let db = wx.cloud.database();
      db.collection("data").add({
        data: {
          name: "exercises.commit_exercise",
          e,
          createdAt: db.serverDate()
        }
      });
    })
    this.setData({count_down: '考试时间已截止'});
  },
  refreshAnsweredCount(){
    if(!this.data.question_status)
      return;
    let answered_count = 0;
    this.data.question_status.map(i=>{
      answered_count += i.ques_status;
    });
    this.setData({answered_count});
  },
  pull_questions: function(){
    app.api("exercises.start_answer")({exercise_id: this.exercise_id})
    .then(res=>{
      console.log("pull questions");
      this.setData(res);
      this.setData({loading: false});
      if(this.data.question_status)
        this.refreshAnsweredCount();
      if(res.exercise.left_time)
        this.startCountDown({left_time: res.exercise.left_time});
    }).catch(e => {
      this.setData({status:e.code});
      app.showError(e);
    });
  },
  save_exercise: function({show_loading=true}={}){
    if(show_loading){
      wx.showLoading({
        title: '请稍候',
      });
    }
    console.log("保存答案中");
    app.callApi({ name:"exercises.begin_commit", data:{exercise_id: this.exercise_id}, complete: wx.hideLoading})
    .then(res=>{
      console.log("保存答案完成");
      console.log(res);
      if(show_loading){
      wx.showToast({
        title: "保存成功",
      });
      }
    }).catch(console.error)

  },
  commit_exercise: function(){
    //wx.showLoading({title: '检查作答情况中'});
    app.api("exercises.begin_commit")({ exercise_id: this.exercise_id})
      .then(resp=>{
        let {question_undo, shixun_undo} = resp;
        if(question_undo==0)
          var content = "交卷后无法更改作答，是否确认？"
        else {
          var content = "您还有"+question_undo+"题未作答";
          if(shixun_undo>0)
            content += "，包含"+shixun_undo+"道实训题";
          content +="，是否现在交卷呢？";
        }
        //wx.hideLoading();
        wx.showModal({
          title:"提示",
          content,
          success:res=>{
            if(res.confirm){
              app.api("exercises.commit_exercise")({exercise_id: this.exercise_id})
              .then(res=>{
                console.log("交卷");
                console.log(res);
			          app.showMsg(res);
			          setTimeout(()=>{
				          wx.navigateBack({
                    delta:1
				          })
			          },  800);
              })
              .catch(e=>{
				        app.showError(e);
				        console.error(e);
              });
            }
          }
        })
        
      })
      .catch(e=>{
				app.showError(e);
				console.error(e);
		  });

  },
  onLoad: function (options) {
    this.exercise_id = options.exercise_id;
    this.course_name = options.exercise_name;
    this.pull_questions();
  },

  onShow: function () {

  },

  onHide: function () {
    this.save_exercise({show_loading: false});
  },

  onUnload: function () {
    this.save_exercise({ show_loading: false });
  },

  onPullDownRefresh: function () {
    
  }
})