pk8f3pmu2/pages/classdetail/classdetail.js

// pages/classdetail/classdetail.js
const AV = require("../../lib/av-live-query-weapp-min")
const File = require("../../model/file")
const Class = require("../../model/class")
const { jsonify } = require('../../utils/leancloudutils');

Page({
  /**
   * 页面的初始数据
   */
  class: null,
  pic_urls: [],
  data: {
    loading: true,
    files:[]
  },

  preview_pic:function(event){
    wx.showLoading({
      title: '加载中',
    })
    fileid = event.currentTarget.dataset.fileid;
    wx.previewImage({
      urls: this.pic_urls,
      current: fileid,
      complete:wx.hideLoading
    })
  },
  del_file: function(event){
    objectid = event.currentTarget.dataset.id;
    fileid = event.currentTarget.dataset.fileid;
    pull_files = this.pull_files.bind(this);
    wx.showModal({
      title: '确认',
      content: '删除该资源吗？',
      success(res){
        if(res.confirm){
          file = new AV.Object.createWithoutData("File_", objectid);
          file.destroy().then(()=>{
          wx.cloud.deleteFile({
            fileList:[fileid],
            success:()=>{
              wx.showToast({
                title: '删除成功',
              });
              pull_files();
            },
            fail:()=>{
              wx.showToast({
                title: '删除失败',
                icon: "none"
              })
            }
          });

        },()=>{
          wx.showToast({
            title: '操作失败',
            icon:"none"
          })
        })}
      }
    })
  },
  download: function(event){
    console.log(event);
    fileid = event.currentTarget.dataset.fileid;
    wx.showLoading({
      title: '下载中',
    })
    wx.cloud.downloadFile({
      fileID: fileid,
      success: res => {
        // 返回临时文件路径
        console.log(res.tempFilePath);
        wx.openDocument({
          filePath: res.tempFilePath,
          success: function (res) {
            console.log('打开文档成功')
          },
          fail:console.error,
          complete:wx.hideLoading
        })
        // wx.saveFile({
        //   tempFilePath: res.tempFilePath,
        //   success(res) {
        //     const savedFilePath = res.savedFilePath;
        //     console.log(savedFilePath);
        //   }
        // })
        
      },
      fail: console.error
    })
    
  },
  upload: function(event){
    console.log(event)
    pull_files = this.pull_files.bind(this);
    class_ = this.class;
    wx.showToast({
      title: '请选择聊天文件',
      icon:"none"
    })
    wx.chooseMessageFile({
      count: 1,
      success(res){
        const tempFile = res.tempFiles[0];
        const filename = tempFile.name;
        const filepath = tempFile.path;
        const cloudpath = tempFile.time+"/" + filename;
        console.log(res);
        wx.showLoading({
          title: '上传中',
        })
        wx.cloud.uploadFile({
          cloudPath: cloudpath,
          filePath: filepath,
          success: res => {
            // 返回文件 ID
            fileid = res.fileID;
            file = new File({
              filename: filename,
              class: class_,
              uploader: AV.User.current(),
              fileid: fileid
            }).save().then(()=>{
              wx.hideLoading();
              pull_files();
              wx.showToast({
                title: '上传成功',
              })
              },
              ()=>{
                wx.hideLoading();
                wx.showToast({
                  title: "上传失败",
                  icon: "none"
                })
              }).catch(console.error);
            console.log(res.fileID);
          },
          fail: error=>{
            console.error(error);
            wx.hideLoading();
            wx.showToast({
              title: '上传失败',
              icon:"none"
            })
            }
        })
      }
    })
  },

  pull_files:function(){
    query = new AV.Query("File_");
    query.equalTo("class", this.class);
    query.include("uploader");
    query.find().then(this.set_files);
  },
  set_files: function(files){
    files = files.map(file=>{
      uploader = file.get("uploader");
      file.set("uploader_name", uploader.get("name"));
      file.set("uploader_username", uploader.get("username"));
      filename = file.get("filename");
      if(filename.endsWith(".png") || filename.endsWith(".jpg")){
        file.set("ispic", true);
        this.pic_urls.push(file.get("fileid"));
        console.log(this.pic_urls);
      }else{
        file.set("ispic", false);
      }
      return file;
    })
    this.setData(jsonify({files}));
    this.setData({loading: false});
    console.log(this.data);
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    class_id = options.class_id;
    this.class = AV.Object.createWithoutData("Class_", class_id);
    this.pull_files();
  },

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

  },

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

  },

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

  },

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

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {
    this.pull_files();
  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {

  },

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

  }
})