在Node.js中使用Express实现视频评论的列表展示和删除功能

// router/video.js
router
  .get('/commentList/:videoId', videoController.commentList)
  .delete('/comment/:videoId/:commentId', verifyToken(), videoController.deleteComment);

// videoController.js
exports.commentList = async (req, res) => {
  const videoId = req.params.videoId;
  const { pageNum = 1, pageSize = 10 } = req.body;
  const comments = await VideoComment
    .find({ video: videoId })
    .skip((pageNum - 1) * pageSize)
    .limit(pageSize)
    .populate('user', '_id username image');
  const commentCount = await VideoComment.countDocuments({ video: videoId });
  res.status(200).json({ comments, commentCount });
};

// videoController.js
exports.deleteComment = async (req, res) => {
  const { videoId, commentId } = req.params;
  const videoInfo = await Video.findById(videoId);
  if (!videoInfo) {
    return res.status(404).json({ err: "视频不存在" });
  }
  const comment = await VideoComment.findById(commentId);
  if (!comment) {
    return res.status(404).json({ err: "评论不存在" });
  }
  if (!comment.user.equals(req.user.userinfo._id)) {
    return res.status(403).json({ err: "无权限删除" });
  }
  await comment.deleteOne();
  videoInfo.commentCount--;
  await videoInfo.save();
  res.status(200).json({ err: "删除成功" });
};