const app = getApp();
Component({

  properties: {
    hidden:{
      type:Boolean,
      value: true,
      observer:function(hidden){
        if(!hidden){
          wx.getClipboardData({
            success:res=>{
              if(!res.data||res.data==this.clipboardData) return;
              this.clipboardData = res.data;
              var match = res.data.match(/[A-Z0-9]{5,6}/);
              if(match)
                this.setData({invite_code: match[0]});
            }
          })
        }
      }
    },
    show_code:{
      type:Number,
      value:1
    },
    invite_code: String,
    auto_navigate:{
      type:Number,
      value:1
    },
    opentype:{
      type:String,
      value:"navigateTo"
    }
  },

  data: {
    identities:[],
    hidden:true
  },
  methods: {
    scan(){
      wx.scanCode({
        success:res=>{
          console.log(res);
          var fail = false;
          if(res.scanType=="QR_CODE")
            this.setData({invite_code: res.result});
          else if(res.scanType=="WX_CODE"&&res.path){
            var match = res.path.match(/course_invite\?(.*)$/)
            console.log("match",match);
            if(match){
              var options = {}
              match[1].split("&").map(i=>{
                var index = i.indexOf("=");
                var k = i.slice(0, index);
                var v = i.slice(index + 1);
                options[k]=v})
              console.log("options",options);
              if(options.scene){
                var scene = {};
                for (var i of decodeURIComponent(options.scene).split("&")) {
                  var index = i.indexOf("=");
                  var k = i.slice(0,index);
                  var v = i.slice(index+1);
                  scene[k] = v;
                }
                console.log(scene);
                if(scene.course_id){
                  var {course_id} = scene;
                  app.api("weapps.courses.basic_info")({ course_id })
                    .then(({ course:{invite_code=""}}) => {
                      console.log(invite_code);
                      this.setData({invite_code});
                    }).catch(app.showError);
                }else
                  fail = true;
              }else
                fail = true;
            }else
              fail= true;
          }else
            fail = true;
          if(fail)
            wx.showToast({
              title:"识别失败",icon:"none"
            })
        }
      })
    },
    cancel: function (event) {
      this.setData({ hidden: true });
    },
    update_invite_code: function ({ detail: { value } }) {
      console.log(value);
      this.setData({ invite_code: value });
    },
    update_identities: function ({ detail: { value } }) {
      var data = {assistant_professor:"", professor:"",student:""}
      console.log(value);
      for(var identity of value)
        data[identity] = 1
      console.log(data);
      this.setData(data)
    },
    join_course: function (event) {
      if(this.disabled) return;
      let { invite_code="", assistant_professor="", professor,student=""} = this.data;
      this.disabled = true;
      app.api("courses.apply_to_join_course")({ invite_code, assistant_professor, professor, student,complete: res=>{this.disabled=false}})
        .then(res => {
          app.showMsg(res,800);
          if (res.course_id&&this.data.auto_navigate&&res.message.indexOf("助教申请")==-1){
            setTimeout(()=>{
              app[this.data.opentype]({
                url: `{course}?course_id=${res.course_id}`
              });
            },800);
          }
          this.triggerEvent("success");
          this.cancel();
        })
        .catch(app.showError)

    }
  }
})