// pages/lianxi/main.js
const api = require("../../utils/request.js");
var util = require('../../utils/util.js')
Page({

  /**
   * 页面的初始数据
   */
  data: {
    ctms: [],
    tm_index: 0,
    isright:false,
    answerP:false,
    tmtotal:0,
    moShi:'看题模式',
    isTest:true,
    domain:getApp().globalData.mediahost,
  },
  radioChange: function (e) {
    var that = this
    that.data.currentTm['user_answer'] = e.detail.value
    that.data.ctms[that.data.tm_index] = that.data.currentTm
    that.showAnswer()
  },
  checkboxChange: function (e) {
    var that = this
    that.data.currentTm['user_answer'] = e.detail.value
    that.data.ctms[that.data.tm_index] = that.data.currentTm

  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function () {
    var that = this
    try {
      var value = wx.getStorageSync('ctms')
      if (value) {
        that.data.ctms = value
        that.setData({
          tmtotal: value.length
        })
      }
    } catch (e) { }
    try {
      const res = wx.getSystemInfoSync()
      that.setData({
        scrollHeight: res.windowHeight - 70
      })
    } catch (e) {
    }
    if (that.data.tmtotal== 0) {
      wx.showModal({
        title: '提示',
        content: '无错题记录!',
        confirmText:'返回',
        cancelText:'前去练习',
        success: function (res) {
          if (res.confirm) {
            wx.navigateBack({
            })
          }else{
            wx.redirectTo({
              url: '/pages/lianxi/index',
            })
          }
        }
      })
    }else{
      that.showTm(that.data.tm_index)
    }
    
  },
  onUnload: function () {
    try {
      wx.setStorageSync('ctms', this.data.ctms)
    } catch (e) { }
  },

  /**
   * 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 () {

  },

  showTm: function (index) {
    var that = this
    var currentTm = that.data.ctms[index]
    that.setData({
      'tm_index': index,
      'tmtotal':that.data.ctms.length,
      'currentTm': currentTm
    })
    that.showOptions()
    if (currentTm.user_answer && !that.data.isTest) {
      that.showAnswer()
    }
  },
  panTi: function () {
    var that = this
    let currentTm = that.data.currentTm
    let isright = false
    if (currentTm.type == '多选') {
      if (currentTm.user_answer) {
        if (currentTm.user_answer.sort().toString() == currentTm.right.sort().toString()) {
          isright = true
        }
      }
    } else {
      isright = currentTm.right == currentTm.user_answer
    }
    return isright
  },
  showAnswer: function () {
    let isright = this.panTi()
    this.setData({
      isright: isright,
      answerP: true,
      currentTm: this.data.currentTm
    })
  },
  changeM: function () {
    var that = this;
    if(that.data.isTest){
      that.setData({
        isTest:false,
      })
      that.showOptions()
    }else{
      that.setData({
        isTest:true,
        answerP:false
      })
    }
  },
  next: function () {
    var that = this
    var tm_index = that.data.tm_index + 1
    that.showTm(tm_index)
    that.setData({
      answerP:false
    })
  },
  previous: function () {
    var that = this
    var tm_index = that.data.tm_index - 1
    that.showTm(tm_index)
    that.setData({
      answerP:false
    })
  },
  showOptions: function () {
    let currentTm = this.data.currentTm
    let options = []
    for (let key in currentTm.options) {
      let option = {}
      option.key = key
      option.value = '<p>' + currentTm.options[key].toString() + '</p>'
      if (currentTm.user_answer && this.data.moShi == '看题模式') {
        if (key == currentTm.user_answer || currentTm.user_answer.indexOf(key) != -1) {
          option.checked = true
        }
      } else {
        option.checked = false
      }
      options.push(option)
    }
    this.setData({
      options: options
    })
  },
  remove: function () {
    var that = this
    var index = that.data.tm_index
    that.data.ctms.splice(index,1)
    if(that.data.ctms.length>index){
      that.showTm(index)
    } else if (that.data.ctms.length > 0 && index > 1){
      that.showTm(index-1)
    }
    else{
      wx.navigateBack({
      })
    }
  }
})