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"Added sample: java/src/main/java/com/google/api/services/samples/youtube/cmdline/data/CommentHandling.java"
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‎java/src/main/java/com/google/api/services/samples/youtube/cmdline/data/CommentHandling.java‎

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/*
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* Copyright (c) 2013 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the License
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* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.google.api.services.samples.youtube.cmdline.data;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.util.List;
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import com.google.api.client.auth.oauth2.Credential;
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import com.google.api.client.googleapis.json.GoogleJsonResponseException;
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import com.google.api.services.samples.youtube.cmdline.Auth;
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import com.google.api.services.youtube.YouTube;
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import com.google.api.services.youtube.model.Comment;
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import com.google.api.services.youtube.model.CommentSnippet;
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import com.google.api.services.youtube.model.CommentThread;
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import com.google.api.services.youtube.model.V3CommentListResponse;
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import com.google.api.services.youtube.model.V3CommentThreadListResponse;
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import com.google.common.collect.Lists;
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/**
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* This sample creates and manages comments by:
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*
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* 1. Retrieving the top-level comments for a video via "commentThreads.list" method.
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* 2. Replying to a comment thread via "comments.insert" method.
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* 3. Retrieving comment replies via "comments.list" method.
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* 4. Updating an existing comment via "comments.update" method.
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* 5. Sets moderation status of an existing comment via "comments.setModerationStatus" method.
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* 6. Marking a comment as spam via "comments.markAsSpam" method.
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* 7. Deleting an existing comment via "comments.delete" method.
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*
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* @author Ibrahim Ulukaya
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*/
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public class CommentHandling {
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/**
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* Define a global instance of a YouTube object, which will be used to make
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* YouTube Data API requests.
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*/
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private static YouTube youtube;
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/**
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* List, reply to comment threads; list, update, moderate, mark and delete
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* replies.
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*
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* @param args command line args (not used).
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*/
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public static void main(String[] args) {
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// This OAuth 2.0 access scope allows for full read/write access to the
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// authenticated user's account.
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List<String> scopes = Lists.newArrayList("https://www.googleapis.com/auth/youtube");
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try {
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// Authorize the request.
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Credential credential = Auth.authorize(scopes, "commentthreads");
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// This object is used to make YouTube Data API requests.
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youtube = new YouTube.Builder(Auth.HTTP_TRANSPORT, Auth.JSON_FACTORY, credential)
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.setApplicationName("youtube-cmdline-commentthreads-sample").build();
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// Prompt the user for the ID of a video to comment on.
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// Retrieve the video ID that the user is commenting to.
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String videoId = getVideoId();
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System.out.println("You chose " + videoId + " to subscribe.");
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// Prompt the user for the comment text.
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// Retrieve the text that the user is commenting.
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String text = getText();
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System.out.println("You chose " + text + " to subscribe.");
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// All the available methods are used in sequence just for the sake
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// of an example.
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// Call the YouTube Data API's commentThreads.list method to
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// retrieve video comment threads.
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V3CommentThreadListResponse videoCommentsListResponse = youtube.commentThreads()
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.list("snippet").setVideoId(videoId).setTextFormat("plainText").execute();
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List<CommentThread> videoComments = videoCommentsListResponse.getItems();
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if (videoComments.isEmpty()) {
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System.out.println("Can't get video comments.");
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} else {
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// Print information from the API response.
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System.out
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.println("\n================== Returned Video Comments ==================\n");
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for (CommentThread videoComment : videoComments) {
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CommentSnippet snippet = videoComment.getSnippet().getTopLevelComment()
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.getSnippet();
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System.out.println(" - Author: " + snippet.getAuthorDisplayName());
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System.out.println(" - Comment: " + snippet.getTextDisplay());
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System.out
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.println("\n-------------------------------------------------------------\n");
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}
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CommentThread firstComment = videoComments.get(0);
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// Will use this thread as parent to new reply.
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String parentId = firstComment.getId();
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// Create a comment snippet with text.
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CommentSnippet commentSnippet = new CommentSnippet();
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commentSnippet.setTextOriginal(text);
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commentSnippet.setParentId(parentId);
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// Create a comment with snippet.
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Comment comment = new Comment();
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comment.setSnippet(commentSnippet);
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// Call the YouTube Data API's comments.insert method to reply
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// to a comment.
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// (If the intention is to create a new top-level comment,
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// commentThreads.insert
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// method should be used instead.)
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Comment commentInsertResponse = youtube.comments().insert("snippet", comment)
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.execute();
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// Print information from the API response.
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System.out
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.println("\n================== Created Comment Reply ==================\n");
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CommentSnippet snippet = commentInsertResponse.getSnippet();
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System.out.println(" - Author: " + snippet.getAuthorDisplayName());
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System.out.println(" - Comment: " + snippet.getTextDisplay());
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System.out
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.println("\n-------------------------------------------------------------\n");
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// Call the YouTube Data API's comments.list method to retrieve
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// existing comment
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// replies.
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V3CommentListResponse commentsListResponse = youtube.comments().list("snippet")
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.setParentId(parentId).setTextFormat("plainText").execute();
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List<Comment> comments = commentsListResponse.getItems();
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if (comments.isEmpty()) {
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System.out.println("Can't get comment replies.");
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} else {
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// Print information from the API response.
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System.out
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.println("\n================== Returned Comment Replies ==================\n");
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for (Comment commentReply : comments) {
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snippet = commentReply.getSnippet();
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System.out.println(" - Author: " + snippet.getAuthorDisplayName());
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System.out.println(" - Comment: " + snippet.getTextDisplay());
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System.out
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.println("\n-------------------------------------------------------------\n");
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}
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Comment firstCommentReply = comments.get(0);
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firstCommentReply.getSnippet().setTextOriginal("updated");
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Comment commentUpdateResponse = youtube.comments()
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.update("snippet", firstCommentReply).execute();
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// Print information from the API response.
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System.out
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.println("\n================== Updated Video Comment ==================\n");
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snippet = commentUpdateResponse.getSnippet();
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System.out.println(" - Author: " + snippet.getAuthorDisplayName());
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System.out.println(" - Comment: " + snippet.getTextDisplay());
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System.out
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.println("\n-------------------------------------------------------------\n");
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// Call the YouTube Data API's comments.setModerationStatus
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// method to set moderation
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// status of an existing comment.
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youtube.comments().setModerationStatus(firstCommentReply.getId(), "published");
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System.out.println(" - Changed comment status to published: "
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+ firstCommentReply.getId());
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// Call the YouTube Data API's comments.markAsSpam method to
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// mark an existing comment as spam.
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youtube.comments().markAsSpam(firstCommentReply.getId());
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System.out.println(" - Marked comment as spam: " + firstCommentReply.getId());
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// Call the YouTube Data API's comments.delete method to
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// delete an existing comment.
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youtube.comments().delete(firstCommentReply.getId());
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System.out
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.println(" - Deleted comment as spam: " + firstCommentReply.getId());
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}
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}
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} catch (GoogleJsonResponseException e) {
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System.err.println("GoogleJsonResponseException code: " + e.getDetails().getCode()
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+ " : " + e.getDetails().getMessage());
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e.printStackTrace();
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} catch (IOException e) {
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System.err.println("IOException: " + e.getMessage());
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e.printStackTrace();
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} catch (Throwable t) {
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System.err.println("Throwable: " + t.getMessage());
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t.printStackTrace();
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}
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}
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/*
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* Prompt the user to enter a video ID. Then return the ID.
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*/
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private static String getVideoId() throws IOException {
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String videoId = "";
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System.out.print("Please enter a video id: ");
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BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));
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videoId = bReader.readLine();
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return videoId;
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}
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/*
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* Prompt the user to enter text for a comment. Then return the text.
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*/
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private static String getText() throws IOException {
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String text = "";
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System.out.print("Please enter a comment text: ");
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BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));
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text = bReader.readLine();
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if (text.length() < 1) {
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// If nothing is entered, defaults to "YouTube For Developers."
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text = "YouTube For Developers.";
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}
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return text;
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}
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}

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