const app = getApp();
Component({
  properties: {

  },

  data: {
    shixuns:[]
  },
  pageLifetimes: {
    show(){
      app.syncUser()
      .then(res=>{
        if(res.user.user_id!=this.user_id){
          this.pullShixuns({refresh:1});
          this.user_id = res.user.user_id;
        }
      })
    }
  },
  attached(){
    this.options = {page:1, per_page:16};
    app.syncUser()
    .then(res => {
      if (res.user.user_id != this.user_id) {
        this.pullShixuns({ refresh: 1 });
        this.user_id = res.user.user_id;
      }
    });
  },
  methods: {
    async pullShixuns({refresh=0}={}){
      if(refresh){
        if(refresh==1){
          this.options.page = 1;
          var { options } = this;
        }else if(refresh==2){
          var {page, per_page} = this.options;
          var options = {page:1, per_page: page*per_page};
        }
      }else{
        this.options.page++;
        var {options} = this;
      }let {shixuns} = await app.api("users.shixuns")(options);
      if(!refresh)
        shixuns = this.data.shixuns.concat(shixuns);
      this.setData({shixuns});
      return shixuns;
    },
    onPullDownRefresh(){
      this.pullShixuns({refresh:2});
    },
    onReachBottom(){
      this.pullShixuns({refresh:0});
    }
  }
})