const app = getApp();
Component({

  properties: {
    show:{
      type:Boolean,
      value: false,
      observer: "onShowChange"
    },
    show_code:{
      type:Number,
      value:1
    },
    invite_code: String,
    auto_navigate:{
      type:Number,
      value:1
    },
    opentype:{
      type:String,
      value:"navigateTo"
    }
  },

  data: {
    identities:[],
    showDialog: false, 
    buttons:[
      {text:"取消"},
      {text:"提交"}
    ]
  },
  methods: {
    onShowChange(value){
      if(value){
        if(!app.checkLogin({content:"您需要登录后才能加入课堂"})||!this.checkProfile()){
          value = false;
          this.setData({show: false});
        }
        wx.getClipboardData({
          success:res=>{
            if(!res.data||res.data==this.clipboardData) return;
            this.clipboardData = res.data;
            var match = res.data.match(/(?![0-9]+$)(?![a-zA-Z]+$)[0-9A-Z]{5,6}/);
            if(match)
              this.setData({invite_code: match[0]});
          }
        })
        this.setData({showDialog: value});
      }else{
        this.setData({showDialog: value});
      }
    },
    checkProfile(){
      if(app.user().profile_completed)
        return true;
      else{
        wx.showModal({
          title:"提示",
          content:"您需要完善您的个人资料，才能加入课堂",
          confirmText:"立即完善",
          success:res=>{
            if(res.confirm){
              app.navigateTo({
                url:"{profile}"
              });
            }
          }
        })
        return false;
      }
    },
    scan(){
      wx.scanCode({
        success: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\?(.*)$/)
            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})
              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;
                }
                if(scene.course_id){
                  var {course_id} = scene;
                  app.api("weapps.courses.basic_info")({ course_id })
                    .then(({ course:{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"
            })
        }
      })
    },
    onCancel() {
      this.setData({ show: false, invite_code:'', professor:"", student:"", assistant_professor:"" });
    },
    onTapButton({detail:{index}}){
      if(index==0)
        this.onCancel();
      else if(index==1)
        this.join_course();
    },
    update_invite_code: function ({ detail: { value } }) {
      this.setData({ invite_code: value });
    },
    update_identities: function ({ detail: { value } }) {
      var data = {assistant_professor:"", professor:"",student:""}
      for(var identity of value)
        data[identity] = 1
      this.setData(data)
    },
    join_course () {
      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);
          wx.reportAnalytics('join_course', {});
          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}`
              });
            },640);
          }
          this.triggerEvent("success");
          this.onCancel();
        })
        .catch(e=>{
          if(e.code==402){ //一般是信息没完善
            if(this.checkProfile()){ //信息已完善还是出错
              wx.showToast({ title: '发生未知错误',icon:"none"})
              global.realTimeLog.error("join course", e);
            }
          }
          else
            app.showError(e);
        })
    }
  }
})