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("img_loaded",e);
      this.setData({code_loaded:1});
    },
    onImgError(e){
      console.log("onImgError", e);
      let page = this.getPageUrl();
      let scene = this.getScene();
      wx.cloud.callFunction({ name: "openapi", data: { action:"getWXACodeUnlimited", page, scene}})
        .then(res=>{
          this.setData({invite_code_url:""});
          this.setData({invite_code_url: res.result})
        });
    },
    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.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}`
    },
    getWxaCodeUrl(){
      let page = this.getPageUrl();
      let scene = this.getScene();
      return global.config.imgDir+"wxacode/"+ (page+"?"+scene).replace(/[\/?&]/g, "_")+".jpeg";
    },
    pull_course(){
      app.api("weapps.courses.basic_info")({ course_id:this.data.course_id })
        .then(({course}) => {
        this.setData({ course, status: 200});
      }).catch(e=>{
        app.showError(e);
        this.setData({status:-1})
      });
  },
  onLoad: function (options) {
    console.log("onLoad", 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 = this.getWxaCodeUrl();
    this.pull_course();
    this.setData({ invite_code_url});
  },
  onShow:function(options){
    console.log("onShow", options)
    app.syncUser()
    .then(({user})=>{
      this.setData({user});
    })
    if(this.data.status==-1)
      this.pull_course()
  },
  onShareAppMessage(){

  }
})