<?php

/**

* This sample creates and manages comments by:

*

* 1. Getting the top-level comments for a video via "commentThreads.list" method.

* 2. Replying to a comment thread via "comments.insert" method.

* 3. Getting comment replies via "comments.list" method.

* 4. Updating an existing comment via "comments.update" method.

* 5. Sets moderation status of an existing comment via "comments.setModerationStatus" method.

* 6. Marking a comment as spam via "comments.markAsSpam" method.

* 7. Deleting an existing comment via "comments.delete" method.

*

* @author Ibrahim Ulukaya

*/

/**

* Library Requirements

*

* 1. Install composer (https://getcomposer.org)

* 2. On the command line, change to this directory (api-samples/php)

* 3. Require the google/apiclient library

* $ composer require google/apiclient:~2.0

*/

if (!file_exists(__DIR__ . '/vendor/autoload.php')) {

throw new \Exception('please run "composer require google/apiclient:~2.0" in "' . __DIR__ .'"');

}

require_once __DIR__ . '/vendor/autoload.php';

session_start();

/*

* You can acquire an OAuth 2.0 client ID and client secret from the

* {{ Google Cloud Console }} <{{ https://cloud.google.com/console }}>

* For more information about using OAuth 2.0 to access Google APIs, please see:

* <https://developers.google.com/youtube/v3/guides/authentication>

* Please ensure that you have enabled the YouTube Data API for your project.

*/

$OAUTH2_CLIENT_ID = 'REPLACE_ME';

$OAUTH2_CLIENT_SECRET = 'REPLACE_ME';

/* You can replace $VIDEO_ID with one of your videos' id, and text with the

* comment you want to be added.

*/

$VIDEO_ID = 'REPLACE_ME';

$TEXT = 'REPLACE_ME';

$client = new Google_Client();

$client->setClientId($OAUTH2_CLIENT_ID);

$client->setClientSecret($OAUTH2_CLIENT_SECRET);

/*

* This OAuth 2.0 access scope allows for full read/write access to the

* authenticated user's account and requires requests to use an SSL connection.

*/

$client->setScopes('https://www.googleapis.com/auth/youtube.force-ssl');

$redirect = filter_var('http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'],

FILTER_SANITIZE_URL);

$client->setRedirectUri($redirect);

// Define an object that will be used to make all API requests.

$youtube = new Google_Service_YouTube($client);

// Check if an auth token exists for the required scopes

$tokenSessionKey = 'token-' . $client->prepareScopes();

if (isset($_GET['code'])) {

if (strval($_SESSION['state']) !== strval($_GET['state'])) {

die('The session state did not match.');

}

$client->authenticate($_GET['code']);

$_SESSION[$tokenSessionKey] = $client->getAccessToken();

header('Location: ' . $redirect);

}

if (isset($_SESSION[$tokenSessionKey])) {

$client->setAccessToken($_SESSION[$tokenSessionKey]);

}

// Check to ensure that the access token was successfully acquired.

if ($client->getAccessToken()) {

try {

# All the available methods are used in sequence just for the sake of an example.

// Call the YouTube Data API's commentThreads.list method to retrieve video comment threads.

$videoCommentThreads = $youtube->commentThreads->listCommentThreads('snippet', array(

'videoId' => $VIDEO_ID,

'textFormat' => 'plainText',

));

$parentId = $videoCommentThreads[0]['id'];

# Create a comment snippet with text.

$commentSnippet = new Google_Service_YouTube_CommentSnippet();

$commentSnippet->setTextOriginal($TEXT);

$commentSnippet->setParentId($parentId);

# Create a comment with snippet.

$comment = new Google_Service_YouTube_Comment();

$comment->setSnippet($commentSnippet);

# Call the YouTube Data API's comments.insert method to reply to a comment.

# (If the intention is to create a new top-level comment, commentThreads.insert

# method should be used instead.)

$commentInsertResponse = $youtube->comments->insert('snippet', $comment);

// Call the YouTube Data API's comments.list method to retrieve existing comment replies.

$videoComments = $youtube->comments->listComments('snippet', array(

'parentId' => $parentId,

'textFormat' => 'plainText',

));

if (empty($videoComments)) {

$htmlBody .= "<h3>Can\'t get video comments.</h3>";

} else {

$videoComments[0]['snippet']['textOriginal'] = 'updated';

// Call the YouTube Data API's comments.update method to update an existing comment.

$videoCommentUpdateResponse = $youtube->comments->update('snippet', $videoComments[0]);

// Call the YouTube Data API's comments.setModerationStatus method to set moderation

// status of an existing comment.

$youtube->comments->setModerationStatus($videoComments[0]['id'], 'published');

// Call the YouTube Data API's comments.markAsSpam method to mark an existing comment as spam.

$youtube->comments->markAsSpam($videoComments[0]['id']);

// Call the YouTube Data API's comments.delete method to delete an existing comment.

$youtube->comments->delete($videoComments[0]['id']);

}

$htmlBody .= "<h3>Video Comment Replies</h3><ul>";

foreach ($videoComments as $comment) {

$htmlBody .= sprintf('<li>%s: "%s"</li>', $comment['snippet']['authorDisplayName'],

$comment['snippet']['textOriginal']);

}

$htmlBody .= '</ul>';

$htmlBody .= "<h2>Replied to a comment for</h2><ul>";

$htmlBody .= sprintf('<li>%s: "%s"</li>',

$commentInsertResponse['snippet']['authorDisplayName'],

$commentInsertResponse['snippet']['textDisplay']);

$htmlBody .= '</ul>';

$htmlBody .= "<h2>Updated comment for</h2><ul>";

$htmlBody .= sprintf('<li>%s: "%s"</li>',

$videoCommentUpdateResponse['snippet']['authorDisplayName'],

$videoCommentUpdateResponse['snippet']['textDisplay']);

$htmlBody .= '</ul>';

} catch (Google_Service_Exception $e) {

$htmlBody .= sprintf('<p>A service error occurred: <code>%s</code></p>',

htmlspecialchars($e->getMessage()));

} catch (Google_Exception $e) {

$htmlBody .= sprintf('<p>An client error occurred: <code>%s</code></p>',

htmlspecialchars($e->getMessage()));

}

$_SESSION[$tokenSessionKey] = $client->getAccessToken();

} elseif ($OAUTH2_CLIENT_ID == 'REPLACE_ME') {

$htmlBody = <<<END

<h3>Client Credentials Required</h3>

<p>

You need to set <code>\$OAUTH2_CLIENT_ID</code> and

<code>\$OAUTH2_CLIENT_ID</code> before proceeding.

<p>

END;

} else {

// If the user hasn't authorized the app, initiate the OAuth flow

$state = mt_rand();

$client->setState($state);

$_SESSION['state'] = $state;

$authUrl = $client->createAuthUrl();

$htmlBody = <<<END

<h3>Authorization Required</h3>

<p>You need to <a href="$authUrl">authorize access</a> before proceeding.<p>

END;

}

?>

<!doctype html>

<html>

<head>

<title>Insert, list, update, moderate, mark and delete comments.</title>

</head>

<body>

<?=$htmlBody?>

</body>

</html>