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

  },

  data: {
    shixun_list:[]
  },
  attached(){
    this.options = {page:1, limit: 10};
    this.pullShixuns({refresh:1});
  },
  methods: {
    clear(){
      this.setData({keyword:"", showClear:0});
      this.options.keyword = "";
      this.pullShixuns({refresh:1});
    },
    onInput(e){
      let {detail:{value}} = e;
      if(this.data.showClear&&!value){
        this.clear();
      }else if(!this.data.showClear&&value){
        this.setData({showClear:1});
      }
      
    },
    onSubmit(e){
      console.log(e)
      let {detail:{value}} = e;
      if(this.options.keyword!=value){
        this.options.keyword = value;
        this.pullShixuns({refresh:1});
      }
    },
    onPullDownRefresh(){
      this.pullShixuns({refresh:1});
    },
    onReachBottom(){
      if(this.data.status==200)
        this.pullShixuns();
    },
    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 = {...this.options,page:1, per_page: page*per_page};
        }
      }else{
        this.options.page++;
        var {options} = this;
      }
      wx.showNavigationBarLoading();
      return app.api("shixun_lists")(options).then(({shixun_list})=>{
        let length = shixun_list.length;
        if (!refresh){
          shixun_list = this.data.shixun_list.concat(shixun_list);
          var status = length>0?200:204;
        }else{
          var status = length>0?200:205;
        }
        this.setData({ shixun_list, status}, wx.hideNavigationBarLoading);
      }).catch(e=>{
        this.setData({ shixun_list:[], status:e.code}, wx.hideNavigationBarLoading);
      })
    }
  }
})