const app = getApp();
Component({
  properties: {
    course_id: {
      type: Number
    },
    id: {
      type: Number
    },
    refresh:{
      type:Boolean,
      observer:function(v){
        if(v){
          this.onLoad();
          this.setData({ refresh: false });
        }
      }
    }
  },

  data: {
    imgDir: global.config.imgDir,
    files:[],
    loading:true
  },
  attached(){
    console.log("attachment",this.data);
    this.onLoad();
  },
  methods: {
    pull_files: function () {
      wx.showLoading({
        title: '加载中',
      })
      app.callApi({ name: "files", data: { course_id: this.data.course_id }, complete: () => { wx.hideLoading(); this.setData({ loading: false }) } })
        .then(res => {
          console.log("pull_files");
          console.log(res);
          this.setData({ files: res.data.files });
        })
        .catch(console.error);
    },

    previewFile: function ({ currentTarget: { dataset:{url=""} } }) {
      let ext = url.split(".").slice(-1)[0].toLowerCase();
      if(["bmp","jpg","png","gif"].indexOf(ext)!=-1){
        wx.previewImage({
          urls: [url]
        });
        return;
      }
      wx.showLoading({
        title: '下载中',
      })
      wx.downloadFile({
        url: global.config.eduUrl + url,
        success: (res) => {
          wx.openDocument({
            filePath: res.tempFilePath,
            fail: app.showError
          });
        },
        fail: app.showError,
        complete: wx.hideLoading
      })

    },
    onLoad: function (options) {
      this.pull_files();
    },
  }
})