// compontents/tarbar/tarbar.js
const util = require('../../utils/util.js');
Component({
  /**
   * 组件的属性列表
   * 第一次进入课程的nav
   */
  properties: {
    
  },

  /**
   * 组件的初始数据
   */
  data: {
    motto: ['我的','错题本','语文','数学','中文','英语','科学','艺术'],
    navBtnSelectIdx: 0,
    left: 0
  },

  /**
   * 组件的方法列表
   */
  methods: {
    navItemTap: function (e) {
      //更改navBtnSelectIdx加class   
      let index = e.target.dataset.index;
      if (index != this.navBtnSelectIdx) {
        this.setData({ navBtnSelectIdx: index});
      }
      //移动nav
      if (index <= 2) {
        this.setData({ left: 0 });
      }
      if(index > 2){
        this.setData({left: 200 });
      }
      if(index == 0) {
        wx.redirectTo({
          url: '../index/index?ind=0'
        })
      }
      if(index == 1) {
        wx.redirectTo({
          url: '../mistakes/mistakes?ind=1'
        })
      }
      if(index == 2) {
        wx.redirectTo({
          url: '../language/language?ind=2'
        })
      }
      if(index == 3) {
        wx.redirectTo({
          url: '../mathematics/mathematics?ind=3'
        })
      }
      if(index == 4) {
        wx.redirectTo({
          url: '../chinese/chinese?ind=4'
        })
      }
      if(index == 5) {
        wx.redirectTo({
          url: '../english/english?ind=5'
        })
      }
      if(index == 6) {
        wx.redirectTo({
          url: '../science/science?ind=6'
        })
      }                        
      if(index == 7) {
        wx.redirectTo({
          url: '../art/art?ind=7'
        })
      }
    }
  },
  ready() {
    let options = util.getUrl();
    //console.log(options)
    if(options.ind) {
      this.setData({ navBtnSelectIdx: options.ind});
    }
    if (options.ind <= 2) {
      this.setData({ left: 0 });
    }
    if(options.ind > 2){
      this.setData({left: 200 });
    }
  }
})