<?php

/**

* This sample uploads and sets a custom thumbnail for a video.

*

* 1. It uploads an image using the "Google_MediaFileUpload" class.

* 2. It sets the uploaded image as a custom thumbnail to the video by

* calling the API's "youtube.thumbnails.set" 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';

$client = new Google_Client();

$client->setClientId($OAUTH2_CLIENT_ID);

$client->setClientSecret($OAUTH2_CLIENT_SECRET);

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

$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()) {

$htmlBody = '';

try{

// REPLACE this value with the video ID of the video being updated.

$videoId = "VIDEO_ID";

// REPLACE this value with the path to the image file you are uploading.

$imagePath = "/path/to/file.png";

// Specify the size of each chunk of data, in bytes. Set a higher value for

// reliable connection as fewer chunks lead to faster uploads. Set a lower

// value for better recovery on less reliable connections.

$chunkSizeBytes = 1 * 1024 * 1024;

// Setting the defer flag to true tells the client to return a request which can be called

// with ->execute(); instead of making the API call immediately.

$client->setDefer(true);

// Create a request for the API's thumbnails.set method to upload the image and associate

// it with the appropriate video.

$setRequest = $youtube->thumbnails->set($videoId);

// Create a MediaFileUpload object for resumable uploads.

$media = new Google_Http_MediaFileUpload(

$client,

$setRequest,

'image/png',

null,

true,

$chunkSizeBytes

);

$media->setFileSize(filesize($imagePath));

// Read the media file and upload it chunk by chunk.

$status = false;

$handle = fopen($imagePath, "rb");

while (!$status && !feof($handle)) {

$chunk = fread($handle, $chunkSizeBytes);

$status = $media->nextChunk($chunk);

}

fclose($handle);

// If you want to make other calls after the file upload, set setDefer back to false

$client->setDefer(false);

$thumbnailUrl = $status['items'][0]['default']['url'];

$htmlBody .= "<h3>Thumbnail Uploaded</h3><ul>";

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

$videoId,

$thumbnailUrl);

$htmlBody .= sprintf('<img src="%s">', $thumbnailUrl);

$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>Claim Uploaded</title>

</head>

<body>

<?=$htmlBody?>

</body>

</html>