Insert YouTube Comment reply using Google App Script-CodePudding

I am trying to create a program using Google Apps Script that inserts a reply to a given youtube comment with its ID. But when I try to insert a comment, it throws an error,

GoogleJsonResponseException: API call to youtube.commentThreads.insert failed with error: Comments cannot be empty. startCommentThread @ Code.gs:42

Line 42: YouTube.CommentThreads.insert(resource, "snippet");

Here's my code:

function startCommentThread(vid,ytch, fc) {
  var fc,vid,ytch
  fc ="Hi" //This is reply comment
  vid ="3a8VpwZm2Kw" //This is video id
  ytch ="UCNXOZLBWDbLJxxXcLEpKzVQ" // channel id
  const resource = {
        snippet: {
          channelId: ytch,
          videoId: vid,
          textOriginal : fc,
          parentId : "UgyvUFY31md_zpE9eqV4AaABAg" //comment id
                  }
                    }
YouTube.CommentThreads.insert(resource, "snippet");}

CodePudding user response：

The documentation seems to indicate that the structure of your request body is incorrect.

Based on the documentation, I think the request body should look like this:

const resource = {
  snippet: {
    channelId: ytch,
    videoId: vid,
    topLevelComment: {
      snippet: {
        textOriginal: fc
      }
    }
  }
};

EDIT I see now that you want to simply insert a reply to an existing thread. I noticed in your code you were attempting to call YouTube.CommentThreads.insert, so I assumed the goal was to create a new thread.

If you're only looking to reply to an existing thread, and you already know what the ID of that thread is, you can structure your resource like this:

const resource = {
  snippet: {
    textOriginal: fc,
    parentId: threadId // whatever the ID of the parent thread is.
  }
};

You'd then call YouTube.Comments.insert, rather than YouTube.CommentThreads.insert.