// pages/gongyiClass/gongyiClass.js
var app = getApp();
Page({

  /**
   * 页面的初始数据
   */
  data: {
    parentCategorys: [],
    tabIndex: 0,
    erjiTab: -1,
    subCategory1: [],
    subCategory2: [],
    listH: '',
    parentId: 1,
    subId: 0,
    page: 0, //当前页数
    pageCount: 0, //总页数
    list: [],
    resultList: {},
    //数据加载loading
    showLoading: false,
    isMember: false
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    var that = this;
    var winH = wx.getSystemInfoSync().windowHeight;
    //创建节点选择器
    var query = wx.createSelectorQuery();
    //选择id
    query.select('.top_gongyiClass').boundingClientRect()
    query.select('.lookHistory').boundingClientRect()
    query.select('.entrance').boundingClientRect()
    query.exec(function (res) {
      var listH = winH - res[0].height - res[1].height - res[2].height - 162
      that.setData({
        listH: listH
      })
    })

    // console.log(app.url)
    var isMember = wx.getStorageSync('isMember');
    if (isMember) {
      this.setData({
        isMember: isMember
      })
    }
    var that = this;
    wx.request({
      url: app.url + 'ajax_get_course_category.php',
      header: {
        'content-type': 'application/json'
      },
      success: function (res) {
        console.log(res)
        if (res.statusCode == 200) {
          that.setData({
            parentCategorys: res.data.result,
            subCategory1: res.data.result[0].subCategorys,
            subCategory2: res.data.result[1].subCategorys,
            //默认为第1条
            parentId: res.data.result[0].id,
            // subId: res.data.result[0].subCategorys[0].id
          })
        }
        that.getCourselist()
      },
      fail: function (res) {},
      complete: function (res) {},
    })
  },

  /**
   * 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 () {

  },

  /**
   * 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 () {},

  //课程详细页面
  classDetails(e) {
    //获取参数
    let mediaId = e.currentTarget.dataset['index']
    wx.navigateTo({
      url: '../classDetails/classDetails?mediaId=' + mediaId,
    });
    wx.setNavigationBarTitle({
      title: '课程详情'
    })
  },

  //切换一级分类
  parentTab(e) {
    let index = e.currentTarget.dataset['index']
    this.setData({
      tabIndex: index,
      parentId: this.data.parentCategorys[index].id,
      subId: 0,
      erjiTab: -1
    })
    //检索课程数据
    this.getCourselist()
  },

  //切换二级分类
  subTab(e) {
    let index = e.currentTarget.dataset['index']
    if (this.data.tabIndex == 0) {
      this.setData({
        erjiTab: index,
        subId: index == -1 ? '0' : this.data.subCategory1[index].id,
        resultList: [],
        list: []
      })
    } else {
      this.setData({
        erjiTab: index,
        subId: index == -1 ? '0' : this.data.subCategory2[index].id,
        resultList: [],
        list: []
      })
    }

    //检索课程数据
    this.getCourselist()

  },

  //下滑到底部以后加载更多
  loadMore() {
    if (this.data.page < this.data.pageCount) {
      var pageIndex = this.data.page + 1
      this.setData({
        page: pageIndex
      })
      this.getCourselist();
    } else {
      wx.showToast({
        title: '没有更多内容啦。',
        icon: 'success',
        duration: 2000
      });
    }
  },

  //观看历史
  history() {
    wx.navigateTo({
      url: '../history/history',
    });
    wx.setNavigationBarTitle({
      title: '历史'
    })
  },

  // 获取分类的对应的课程列表
  getCourselist() {
    var that = this;
    that.setData({
      showLoading: true,
    });
    wx: wx.request({
      url: app.url + 'ajax_get_course_by_category.php',
      data: {
        parentId: this.data.parentId,
        subId: this.data.subId,
        page: this.data.page,
      },
      header: {
        'content-type': 'application/json'
      },
      method: 'GET',
      dataType: 'json',
      success: function (res) {
        if (that.data.erjiTab == -1) {
          that.setData({
            resultList: res.data.result,
            pageCount: res.data.result.pageCount
          })
        } else {
          that.setData({
            list: that.data.list.concat(res.data.result.list),
            pageCount: res.data.result.pageCount
          })
        }
      },
      fail: function (res) {},
      complete: function (res) {
        that.setData({
          showLoading: false,
        });
      },
    })
  },
  // 跳到会员
  memberChange() {
    wx.navigateTo({
      url: '../memberChange/memberChange',
    })
  }
})