pk8f3pmu2/miniprogram/course/pages/course_invite/course_invite.js

import { getWXACodeUrl} from '../../../js/utils';
const app = getApp();
/**
 * status:[404,-1]
 */
Page({
    data: {
      course:{
        name:"**课堂邀请",
        teacher_name:"点击最下方按钮",
        teacher_school:"登录后查看更多",
        invite_code:"登录后查看"
      },
      imgDir:global.config.imgDir,
      user:{},
      status:0,
      eduImgDir:global.config.eduImgDir
    },
    onImgLoad(e){
      console.log("imageload", e);
      this.setData({code_loaded:1});
    },
    onImgError(e){
      let page = this.getPageUrl();
      let scene = this.getScene();
      wx.cloud.callFunction({ name: "openapi", data: { name:"wxacode.getUnlimited", data:{page, scene}}})
        .then(res=>{
          let t = new Date().getTime();
          wx.cloud.getTempFileURL({
            fileList:[res.result.fileID],
            success:res=>{
              console.log(res)
              this.setData({invite_code_url: res.fileList[0].tempFileURL+"?t="+t})
            }
          })
        });
    },
    login:function(){
      app.navigateTo({
        url: '{account}',
      });
    },
    onTapCode(){
      if(this.data.course.code_halt)
        return;
      let data = this.data.course.invite_code || this.data.scene.invite_code;
      wx.setClipboardData({
        data
      })
    },
    preview(){
      if(this.data.course.code_halt)
        return;
      wx.previewImage({
        urls: [this.data.invite_code_url],
      })
    },
    joinCourse: function(event) {
      if(this.data.status==404){
        return wx.showToast({
          title: '该课堂已被删除了',icon:"none"
        })
      }
      if (this.data.course.code_halt||!this.data.course.invite_code)
        return wx.showToast({
        title: '＞︿＜\n邀请码已经停用了',
        icon:"none"
      });
      this.setData({show_join_modal:1});
    },
    getPageUrl(){
      return app.getPageUrl(`{course_invite}`,"");
    },
    getScene(){
      let { course_id} = this.data;
      return `course_id=${course_id}`
    },
    pull_course(){
      app.syncUser().then(res=>{
        app.api("weapps.courses.basic_info")({ course_id: this.data.course_id })
          .then(({ course }) => {
            this.setData({ course, status: 200 });
          }).catch(e => {
            if(e.code==404){
              let course = {
                name:"该课堂已被删除",
                teacher_name:" ",
                teacher_school:" ",
                invite_code:"",
                code_halt:1
              };
              e.message = "该课堂已被删除";
              this.setData({course});
            }
            app.showError(e);
            this.setData({ status: e.code })
          });
      })
    },
    onLoad: function (options) {
      var course_id;
      if(options.course_id)
        course_id= options.course_id;
      else if(options.scene){
        var scene = {};
        for (var item of decodeURIComponent(options.scene).split("&")){
          var [k,v] = item.split("=")
          scene[k]=v;
        }
        course_id = scene.course_id;
      }else{
        this.setData({status: 404});
        return;
    }
    this.setData({ course_id, status: 1});
    let invite_code_url = getWXACodeUrl({url: this.getPageUrl(), scene:this.getScene()});
    this.pull_course();
    this.setData({ invite_code_url});
  },
  onShow:function(options){
    
    app.syncUser()
    .then(({user})=>{
      this.setData({user});
    })
    if(this.data.status==-1)
      this.pull_course()
  },
  onReady(){
    app.reportPageHistory();
  },
  onShareAppMessage(){
    let {course} = this.data;
    return app.shareApp({
      title: "「课堂邀请」" + course.name
    })
  }
})