import commonApi from '../../../api/common';
const app = getApp();

Page({

  /**
   * 页面的初始数据
   */
  data: {
    currentCommunity:null,
    defaultCommunityId:null,
    communityList:[],
    scrollViewHeight:0,
    lng:0,
    lat:0,
    pager:{limit:10,loading:false,loadAll:false,pageIndex:0,refreshTrigger:false}
  },
  onSelectItem(event){
    const pages = getCurrentPages();
    const prePage = pages[pages.length-2];
    const currentCommunity = event.currentTarget.dataset.item;
    this.setData({currentCommunity})
    prePage.changeCommunity(currentCommunity);
    wx.navigateBack();
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad(options) {
    const windowInfo = wx.getWindowInfo();
    this.setData({
      scrollViewHeight:windowInfo.windowHeight,
      defaultCommunityId:options.communityId
    })
    app.getLocation().then((res)=>{
      this.setData({
        lng:res.longitude,
        lat:res.latitude
      });
      this.loadList();
    }).catch(()=>{
      this.loadList();
    })
  },
  refreshList(){
    this.data.pager.loadAll = false;
    this.data.pager.pageIndex = 0;
    this.setData({
      pager:this.data.pager
    });
    this.loadList();
  },
  loadList(){
    if(this.data.pager.loading||this.data.pager.loadAll){
      return;
    }
    this.data.pager.loading = true;
    this.setData({
      pager:this.data.pager
    });
    const data = {
      skip:this.data.pager.limit*this.data.pager.pageIndex,
      limit:this.data.pager.limit,
      status:'OPENING'
    }
    if(this.data.lng&&this.data.lat){
      data.longitude = this.data.lng;
      data.latitude = this.data.lat;
    }
    commonApi.community.list(data).then((data)=>{
      const communityList = data.items;
      let currentCommunity;
      data.items.map((item)=>{
        if(item.distance){
          if(item.distance>=100){
            item.distance = parseFloat(item.distance/1000).toFixed(1)+'km';
          }else{
            item.distance+='m';
          }
        }
        if(item.id==this.data.defaultCommunityId){
          currentCommunity = item;
        }
      })

      if(this.data.pager.pageIndex==0){
        this.data.communityList = data.items;
      }else{
        this.data.communityList = this.data.communityList.concat(data.items);
      }
      this.data.pager.loading = false;
      this.data.pager.pageIndex++;
      this.data.pager.refreshTrigger = false;
      if(data.items.length<this.data.pager.limit){
        this.data.pager.loadAll = true;
      }

      this.setData({
        communityList:this.data.communityList,
        currentCommunity,
        pager:this.data.pager
      });
    });
  },
  /**
   * 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() {

  },

  /**
   * 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() {

  },

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

  }
})