wx-teacher/subpackagestow/teaching/teaching.js

// subpackages/teaching/teaching.js
import { models, db } from '../../utils/cloudbase.js'
Page({

  /**
   * 页面的初始数据
   */
  data: {
    categoriesindex: 1,
    categories: [],
    viewType: 'grid',
    courseList: [],
    sou: '',
    show_1: '',
    xiazi: '',
    categorieslist: {},
    pageNumber: 1,
    pageSize: 10,
    hasMore: true, // 是否还有更多数据
    isLoading: false, // 防止多次触发
  },

  onLoad(options) {
    // 存储 options 到 this 中
    this.options = options;
    // 获取tab数据
    this.getTabdata();

    const fileIDs = [
      'cloud://cloud1-6g98iw7i28b01747.636c-cloud1-6g98iw7i28b01747-1367995226/images/icon/sou.png',
      'cloud://cloud1-6g98iw7i28b01747.636c-cloud1-6g98iw7i28b01747-1367995226/images/icon/show_1.png',
      'cloud://cloud1-6g98iw7i28b01747.636c-cloud1-6g98iw7i28b01747-1367995226/images/icon/xiazi.png',
    ];
    
    // 并发下载多个 fileID
    Promise.all(
      fileIDs.map(fileID => wx.cloud.downloadFile({ fileID }))
    ).then(results => {
      // 每个 result 对应一个下载结果
      const tempFilePaths = results.map(r => r.tempFilePath);
      console.log('全部下载成功:', tempFilePaths);
      this.setData({
        sou: tempFilePaths[0],
        show_1: tempFilePaths[1],
        xiazi: tempFilePaths[2],
      });
    }).catch(err => {
      console.error('有文件下载失败:', err);
    });
  },

  // tab数据
  async getTabdata() {
    const { data } = await models.tab.list({
      filter: {
        where: {
          position: 2, // 显示位置
          // layout_type: 0, // 布局类型
        },
      },
      // envType: pre 体验环境， prod 正式环境
      envType: "prod",
    });
    
    // 返回查询到的数据
    const sortedRecords = data.records.sort((a, b) => {
      return a.sort - b.sort; // 升序排列
    });
    this.setData({
      categories: sortedRecords
    }, () => {
      const type = Number(this.options.type) || 1;
      this.data.categories.forEach((item, index) => {
        if (item.sort === type) {
          this.setData({
            categorieslist: item,
            categoriesindex: type
          });
          if (this.data.categorieslist.layout_type === 1) {
            this.setData({ viewType: 'list' });
          } else {
            this.setData({ viewType: 'grid' });
          }
          // 获取列表数据
          this.getdatalist()
        }
      });
    })
  },

  onReachBottom() {
    // 上拉触底事件的处理函数
    this.loadMore();
  },

  loadMore() {
    // 加载更多数据的逻辑
    console.log('加载更多');
    this.getdatalist(true);
  },
  // 列表数据
  async getdatalist(isLoadMore = false) {
    if (!this.data.categorieslist._id) return; // 防止 _id 为 undefined
    const { pageNumber, pageSize } = this.data;
    const { data } = await models.file_manage.list({
      filter: {
        where: {
          tag_id: this.data.categorieslist._id,

        }
      },
      pageSize,
      pageNumber,
      getCount: true,
      envType: "prod",
    });
    
    const collectList = data.records || [];
    this.setData({
      courseList: isLoadMore ? this.data.courseList.concat(collectList) : collectList,
      pageNumber: pageNumber + 1,
      hasMore: collectList.length === pageSize,
      isLoading: false
    });
  },

  tabcategories(e) {
    const sort = Number(e.currentTarget.dataset.type); // 直接转换为数字
    const currentCategory = this.data.categories.find(item => item.sort === sort);
  
    if (!currentCategory) return;
  
    const viewType = currentCategory.layout_type === 1 ? 'list' : 'grid';
  
    this.setData({
      categoriesindex: sort,
      categorieslist: currentCategory,
      viewType,
      courseList: [],        // 重置课程列表
      pageNumber: 1,         // 重置分页
      hasMore: true,
      isLoading: false
    }, () => {
      this.getdatalist();   // 重新加载数据
    });
  },

  goToGoodsList(event) {
    // 获取绑定的数据
    const item = event.currentTarget.dataset.item;
    // 将数据转换为 JSON 字符串并传递
    const itemStr = encodeURIComponent(JSON.stringify(item));
    wx.navigateTo({
      url: `/subpackagestow/details/details?item=${itemStr}`
    });
  }
})