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

const app = getApp();
//status:[0,401,409]
const defaultModules=[{type:"activity", name:"课堂动态"}];
const supportModules = ["activity", "attachment", "exercise","common_homework","shixun_homework"];
Component({
  properties:{
    course_id:Number,
    module_type:{
      type:String,
      observer:function(module){
        this.setModule(module,0);
      }
    },
  },
  data: {
    status:0,
    refresh:0,
    nav_type:"navigateback",
    module:{
      type:"activity",
      name:"课堂动态"
    },
    course: {},
    is_teacher: true, 
    course_modules: [], 
    hidden_modules: [] ,
    statusBarHeight:20,
    windowWidth:375,
    eduImgDir: global.config.eduImgDir,
    scenes:{
      401:{
        buttons:["点击登录","返回"]
      },
      409:{
        message:"你不是该课堂的成员",
        buttons:["加入课堂","返回"]
      },
      404:{
        message:"该课堂已经被删除了",
        buttons:["返回"]
      }
    }
  },
  methods:{
  switchRole({target:{dataset:{role}}}){
    if(!role) return;
    app.api("courses.switch_to_"+role)({course_id: this.data.course_id})
    .then(res=>{
      this.onPullDownRefresh();
      app.showMsg(res);
    }).catch(app.showError)
  },
  setModule({type,showToast=1}){
    for(var module of this.data.course_modules){
      if(module.type==type){
        if(supportModules.indexOf(type)==-1){
          if(showToast)
            wx.showToast({
              title: `暂不支持${module.name}模块`,icon:"none"
            });
          return false;
        }
        this.setData({module});
        return true;
      }
    }
    return false;
  },
  enterShare(){
    let {course_id, course} = this.data;
    let url = `{course_invite}?course_id=${course_id}&invite_code=${course.invite_code}`;
    app.navigateTo({url});
  },
  onTapCode() {
    let { name, invite_code, code_halt} = this.data.course;
    if(!code_halt)
      wx.setClipboardData({data: `输入邀请码${invite_code}加入“${name}”吧`})
    else
      wx.showActionSheet({
        itemList: ["启用邀请码"],
        success:res=>{
          app.api("courses.set_invite_code_halt")({course_id: this.data.course_id})
          .then(res=>{
            app.showMsg(res);
            this.refresh({refresh:0});
          })
        }
      })
  },
  switchModule({currentTarget:{dataset:{type}}}){
    let list = this.data.course_modules.filter(item=>item.type==type);
    if(list[0]&&list[0].type)
      this.setModule({type:list[0].type});
  },
  navigateBack(){
    if(this.data.nav_type=="navigateback")
      wx.navigateBack({
        delta:1
      });
    else
      app.reLaunch({
        url: '{main}',
      });
  },
  async pullCourse(){
    let {course_id} = this.data;
    let course = await app.api("courses.top_banner")({course_id});
    this.setData({course});
    return {course};
  },
  async pullModules(){
    let { course_id } = this.data;
    let data = await app.api("courses.left_banner")({ course_id });
    data.course_modules = defaultModules.concat(data.course_modules);
    this.setData(data);
    return data;
  },
  onTapError({detail:{status, target, current}}){
    console.log(target);
    switch(status){
      case 401:
        if(current==0)
          return app.navigateTo({url:"{account}"});
        else if(current==1)
          return this.navigateBack();
      case 409:
        if(current==0)
          return this.setData({show_join_course: 1});
        else if(current==1)
          return this.navigateBack();
      case 404:
        return this.navigateBack();
    }
  },
  refresh({ refresh = 1 } = {}) {
    this.setData({ refresh });
    app.syncUser().then(res => {
      this.pullCourse().then(res=>{
        this.setData({status:200})
      })
      .catch(e=>{
        this.setData({status:e.code});
      });
      this.pullModules()
        .then(res => {
          console.log(res);
        });
    })
  },
  onLoad: function () {
    wx.getSystemInfo({
      success:res=>{
        let { statusBarHeight, windowWidth} = res;
        this.setData({ statusBarHeight, windowWidth})
      },
    });
    let pages = getCurrentPages();
    if(pages.length<=1)
      this.setData({nav_type:"relaunch"});
    else
      this.setData({nav_type:"navigateback"})
    this.refresh({refresh:0});
  },
  onShow: function () {
    if(this.data.status!=200||this.data.status!=0)
      this.refresh();
  },
  onReady:function(){

  },
  onPullDownRefresh(){
    this.refresh();
  },
  onShareAppMessage: function () {

  }
  }
})