wx-parent/subpackages/down/down.js

// subpackagestow/down/down.js
import { models, db, _ } from '../../utils/cloudbase.js'
Page({

  /**
   * 页面的初始数据
   */
  data: {
    fuzhi: '',
    itemlist: {},
    itemtempFileURL: '',
    countdown: '00:05:00', // 倒计时文本
    countdownTime: 300,    // 倒计时秒数（5分钟）
    timer: null            // 定时器句柄
  },

  onLoad(options) {

    // 获取传递过来的数据
    const itemStr = decodeURIComponent(options.item);
    const item = JSON.parse(itemStr);
    // 设置到页面数据中
    this.setData({
      itemlist: item
    }, () => {
      wx.cloud.getTempFileURL({
        fileList: [
          {
            fileID: this.data.itemlist.url[0]
          }
        ],
        maxAge: 300  // 5分钟，单位秒
      })
      .then(res => {
        console.log(res.fileList, 'fileList');
        this.setData({
          itemtempFileURL: res.fileList[0].tempFileURL
        })
        this.startCountdown(); // 启动倒计时
      })
      .catch(err => {
        console.error(err);
      });      
    });

    const fileIDs = [
      'cloud://cloud1-6g98iw7i28b01747.636c-cloud1-6g98iw7i28b01747-1367995226/images/icon/fuzhi.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({
        fuzhi: tempFilePaths[0],
      });
    }).catch(err => {
      console.error('有文件下载失败:', err);
    });

  },

  // 五分钟倒计时
  startCountdown() {
    const interval = setInterval(() => {
      let time = this.data.countdownTime;
      if (time <= 0) {
        clearInterval(interval);
        this.setData({
          countdown: '00:00:00',
          timer: null
        });
        return;
      }
  
      time--;
      const min = String(Math.floor(time / 60)).padStart(2, '0');
      const sec = String(time % 60).padStart(2, '0');
      const formatted = `00:${min}:${sec}`;
  
      this.setData({
        countdown: formatted,
        countdownTime: time,
        timer: interval
      });
    }, 1000);
  },

  // 分享到微信
  onShareAppMessage() {
    return {
      title: this.data.itemlist.name || '文件分享',
      path: `/subpackagestow/down/down?item=${encodeURIComponent(JSON.stringify(this.data.itemlist))}`,
      imageUrl: this.data.itemlist.cover, // 可选：自定义分享图
    }
  },
  handleShareTap() {
    wx.showToast({
      title: '请点击右上角“···”分享',
      icon: 'none',
      duration: 3000
    });
    this.getaddlishi()
  },

  // 保存链接地址
  handleCopyLink() {
    const link = this.data.itemtempFileURL;
    if (!link) {
      wx.showToast({
        title: '暂无可复制链接',
        icon: 'none'
      });
      return;
    }

    const that = this; // 保存页面上下文
  
    wx.setClipboardData({
      data: link,
      success() {
        that.getaddlishi()
        wx.showToast({
          title: '链接已复制',
          icon: 'success'
        });
      },
      fail() {
        wx.showToast({
          title: '复制失败',
          icon: 'none'
        });
      }
    });
  },

  // 下载
  handleDownloadFile() {
    const url = this.data.itemtempFileURL;
    if (!url) {
      wx.showToast({
        title: '文件链接不存在',
        icon: 'none'
      });
      return;
    }
  
    wx.showLoading({
      title: '下载中...',
      mask: true
    });
  
    wx.downloadFile({
      url: url,
      success: (res) => {
        wx.hideLoading();
  
        if (res.statusCode === 200) {
          const tempFilePath = res.tempFilePath;
          const fileExt = url.split('.').pop().toLowerCase();
          const that = this; // 保存页面上下文
          if (['pdf', 'ppt', 'pptx', 'doc', 'docx', 'xls', 'xlsx'].includes(fileExt)) {
            // 打开文档
            wx.openDocument({
              filePath: tempFilePath,
              showMenu: true,
              success() {
                console.log('打开文档成功');
                that.getaddlishi()
              },
              fail(err) {
                wx.showToast({
                  title: '打开文档失败',
                  icon: 'none'
                });
                console.error('文档打开失败', err);
              }
            });
  
          } else if (['mp4', 'mov', 'avi'].includes(fileExt)) {
            // 视频：先检查权限再保存
            wx.getSetting({
              success: (res) => {
                if (!res.authSetting['scope.writePhotosAlbum']) {
                  wx.authorize({
                    scope: 'scope.writePhotosAlbum',
                    success: () => {
                      this.saveVideo(tempFilePath);
                    },
                    fail: () => {
                      wx.showModal({
                        title: '提示',
                        content: '保存视频需要开启“保存到相册”权限，请前往设置开启。',
                        showCancel: true,
                        success(result) {
                          if (result.confirm) {
                            wx.openSetting();
                          }
                        }
                      });
                    }
                  });
                } else {
                  this.saveVideo(tempFilePath);
                }
              }
            });
  
          } else if (['mp3', 'wav', 'aac'].includes(fileExt)) {
            // 音频保存到本地缓存
            wx.saveFile({
              tempFilePath,
              success(result) {
                wx.showToast({
                  title: '音频已保存',
                  icon: 'success'
                });
                that.getaddlishi()
                console.log('音频保存路径:', result.savedFilePath);
              },
              fail(err) {
                wx.showToast({
                  title: '保存失败',
                  icon: 'none'
                });
                console.error('音频保存失败:', err);
              }
            });
  
          } else {
            wx.showToast({
              title: '暂不支持的文件类型',
              icon: 'none'
            });
          }
  
        } else {
          wx.showToast({
            title: '下载失败',
            icon: 'none'
          });
        }
      },
      fail: (err) => {
        wx.hideLoading();
        wx.showToast({
          title: '下载失败',
          icon: 'none'
        });
        console.error('下载出错:', err);
      }
    });
  }, 
  saveVideo(filePath) {
    const that = this; // 保存页面上下文
    wx.saveVideoToPhotosAlbum({
      filePath,
      success() {
        wx.showToast({
          title: '视频已保存',
          icon: 'success'
        });
        that.getaddlishi()
      },
      fail(err) {
        wx.showToast({
          title: '保存失败',
          icon: 'none'
        });
        console.error('视频保存失败:', err);
      }
    });
  },

  // 新增下载历史
  async getaddlishi() {
    const userInfo = wx.getStorageSync('userInfo')
    const { data } = await models.parent_download_history.create({
      data: {
          wx_user_id: userInfo._id,  // 用户id
          delete: 0,  // 逻辑删除
          file_manage_id: this.data.itemlist._id,  // 课件id
        },
      // envType: pre 体验环境， prod 正式环境
      envType: "prod",
    });
    
    // 返回更新成功的条数
    console.log(this.data.itemlist._id, 'this.data.itemlist._id');    
  },

  // 清除定时器
  onUnload() {
    if (this.data.timer) {
      clearInterval(this.data.timer);
      this.setData({ timer: null });
    }
  }
})