// pages/courses/courses.js
const app = getApp();
Page({

  options: {},
  data: {
    courses: [],
    loading: true,
    page: 1,
    show_join_course_modal:false,
    loaded_all: false,
  },
  search_courses: function({detail: {value}}){
    this.setData({ loaded_all: false });
      this.options.search = value;
      this.fetch_courses(this.options).then(res => {
         console.log(res);
        this.set_courses(res.data.courses);
        if (res.data.courses.length<=10) {
          this.setData({ loaded_all: true })
        }
      })

  },
  show_join_course_modal: function(event){
    this.setData({show_join_course_modal: true});
  },
  cancel_join_course_modal: function(event){
    this.setData({show_join_course_modal: false});
  },
  update_invite_code: function({detail: {value}}){
    this.setData({invite_code: value});
  },
  update_identities: function({detail: {value}}){
    this.setData({identities: value})
  },
  join_course: function (event) {
    const { invite_code, identities } = this.data;
    let data = { invite_code: invite_code };
    for (var identity of identities) {
      data[identity] = 1;
    }
    console.log(data);
    console.log({ ...data });
    app.client.join_course({ ...data })
      .then(res => {
        if (res.data.status == 401) {
          wx.showToast({
            title: "请先登陆",
            icon: "none"
          });
          return;
        }
        console.log(res);
        wx.showToast({
          title: res.data.message
        })
        wx.navigateTo({
          url: "../course/course?course_id=" + res.data.course_id
        });
        this.cancel_join_course_modal();
      })
      .catch(error => {
        wx.showToast({
          title: error.toString(),
          icon: "none"
        });
        console.warn(error);
      })

  },
  fetch_courses: function(options){
    return app.client.search_courses(options)
  },
  set_courses: function(courses){
    this.setData({courses: courses});
  },
  add_courses: function(courses){
    this.setData({
      courses:[...this.data.courses, ...courses],
    })
  },

  onLoad: function (options) {
    this.fetch_courses().then(res=>{
      console.log(res);
      this.set_courses(res.data.courses);
    })
  },


  onReady: function () {

  },


  onShow: function () {

  },


  onHide: function () {

  },


  onUnload: function () {

  },


  onPullDownRefresh: function () {

  },


  onReachBottom: function () {
    if(!this.data.loaded_all){
      wx.pageScrollTo({
        selector: ".loading"
      })
      this.fetch_courses({ page: this.data.page + 1 ,...this.options})
        .then(res => {
          this.setData({ page: this.data.page + 1});
          if(res.data.courses.length==0){
            this.setData({loaded_all: true})
          }else{
            this.add_courses(res.data.courses);
          } 
      })
    }
  },


  onShareAppMessage: function () {

  }
})