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"Added sample: java/src/main/java/com/google/api/services/samples/youtube/cmdline/data/UpdateVideo.java"
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‎java/src/main/java/com/google/api/services/samples/youtube/cmdline/data/UpdateVideo.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 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.Video;
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import com.google.api.services.youtube.model.VideoListResponse;
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import com.google.api.services.youtube.model.VideoSnippet;
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import com.google.common.collect.Lists;
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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.ArrayList;
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import java.util.List;
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/**
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* Update a video by adding a keyword tag to its metadata. The demo uses the
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* YouTube Data API (v3) and OAuth 2.0 for authorization.
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*
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* @author Ibrahim Ulukaya
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*/
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public class UpdateVideo {
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/**
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* Define a global instance of a Youtube object, which will be used
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* to make YouTube Data API requests.
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*/
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private static YouTube youtube;
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/**
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* Add a keyword tag to a video that the user specifies. Use OAuth 2.0 to
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* authorize the API request.
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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, "updatevideo");
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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-updatevideo-sample").build();
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// Prompt the user to enter the video ID of the video being updated.
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String videoId = getVideoIdFromUser();
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System.out.println("You chose " + videoId + " to update.");
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// Prompt the user to enter a keyword tag to add to the video.
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String tag = getTagFromUser();
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System.out.println("You chose " + tag + " as a tag.");
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// Call the YouTube Data API's youtube.videos.list method to
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// retrieve the resource that represents the specified video.
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YouTube.Videos.List listVideosRequest = youtube.videos().list("snippet").setId(videoId);
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VideoListResponse listResponse = listVideosRequest.execute();
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// Since the API request specified a unique video ID, the API
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// response should return exactly one video. If the response does
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// not contain a video, then the specified video ID was not found.
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List<Video> videoList = listResponse.getItems();
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if (videoList.isEmpty()) {
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System.out.println("Can't find a video with ID: " + videoId);
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return;
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}
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// Extract the snippet from the video resource.
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Video video = videoList.get(0);
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VideoSnippet snippet = video.getSnippet();
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// Preserve any tags already associated with the video. If the
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// video does not have any tags, create a new array. Append the
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// provided tag to the list of tags associated with the video.
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List<String> tags = snippet.getTags();
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if (tags == null) {
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tags = new ArrayList<String>(1);
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snippet.setTags(tags);
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}
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tags.add(tag);
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// Update the video resource by calling the videos.update() method.
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YouTube.Videos.Update updateVideosRequest = youtube.videos().update("snippet", video);
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Video videoResponse = updateVideosRequest.execute();
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// Print information from the updated resource.
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System.out.println("\n================== Returned Video ==================\n");
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System.out.println(" - Title: " + videoResponse.getSnippet().getTitle());
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System.out.println(" - Tags: " + videoResponse.getSnippet().getTags());
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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 keyword tag.
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*/
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private static String getTagFromUser() throws IOException {
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String keyword = "";
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System.out.print("Please enter a tag for your video: ");
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BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));
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keyword = bReader.readLine();
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if (keyword.length() < 1) {
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// If the user doesn't enter a tag, use the default value "New Tag."
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keyword = "New Tag";
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}
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return keyword;
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}
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/*
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* Prompt the user to enter a video ID.
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*/
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private static String getVideoIdFromUser() throws IOException {
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String videoId = "";
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System.out.print("Please enter a video Id to update: ");
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BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));
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videoId = bReader.readLine();
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if (videoId.length() < 1) {
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// Exit if the user doesn't provide a value.
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System.out.print("Video Id can't be empty!");
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System.exit(1);
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}
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return videoId;
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}
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}

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