// pages/signIn/signIn.js
var app = getApp()
import { getDisplay,getDisplayProduct } from "../../api/home"
let that

Page({
  data: {
    activeKey: 0,
    displayList:[],
    displayProductList:[],
    cateId:10,
    page:1,
    limit:10
  },
  getDisplayList() {
    
    getDisplay({}).then(res => {
        if(res.code ==1) {
            that.setData({
                displayList: res.data
            })
            console.log(that.data.activeKey)
            that.getDisplayProductList({
                cate_id:that.data.displayList[that.data.activeKey].id,
                page:that.data.page,
                limit:that.data.limit
            })
            
         
        }
    })

    
},

//触底响应函数
onBottom(){
    if(that.data.displayProductList.length==that.data.limit*that.data.page){
        (that.data.page)++;
        that.getDisplayProductList({
            cate_id:that.data.displayList[that.data.activeKey].id,
            page:that.data.page,
            limit:that.data.limit
        })
    }
    
  },

  

  //获取列表失败的回调函数
  getListFail(err){
    wx.showToast({
      title: '获取失败，请稍后重试',
      icon:'none',
      duration:2500,
    })
  },

  

getDisplayProductList(query){
    getDisplayProduct(query).then(res => {
        if(res.code ==1) {
            if (that.data.page == 1) {
                that.setData({
                  displayProductList: res.data,
               })
          } else {
              
              //获取原始列表
              let displayProductList = that.data.displayProductList;
              //获取新列表
              let arr = res.data;
              //新列表数据与原列表数据合并
              let newArr = displayProductList.concat(arr);
              that.setData({
                  displayProductList: newArr,
              })
          }
        }
    })  
},

onChange(event) {
    that.setData({
        activeKey:event.detail,
        page:1
    })
    that.getDisplayProductList({
        cate_id:that.data.displayList[event.detail].id,
        page:that.data.page,
        limit:that.data.limit
    })
  },



    /**
     * 生命周期函数--监听页面加载
     */
    onLoad(options) {
        that = this
        
        
        

    },

    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady() {

    },

    /**
     * 生命周期函数--监听页面显示
     */
    onShow() {

        if(app.globalData.id=='undefined'||app.globalData.id==null||app.globalData.id==''){
           
            that.setData({
                activeKey:0
            })
        }else{
            that.setData({
                activeKey:app.globalData.id
            })
        }
       
        
        that.getTabBar().init();
        that.getDisplayList();
        
        
       
    },

    /**
     * 生命周期函数--监听页面隐藏
     */
    onHide() {

    },

    /**
     * 生命周期函数--监听页面卸载
     */
    onUnload() {

    },

    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh() {

    },

    /**
     * 页面上拉触底事件的处理函数
     */
    onReachBottom() {
        this.onBottom();
    },

    /**
     * 用户点击右上角分享
     */
    onShareAppMessage() {

    }
})