put-https-into-youtube-descriptions.php

<?php

/* THIS SCRIPT EDITS *ALL* YOUTUBE VIDEOS BELONGING TO THE AUTHENTICATED USER,
 * AND REPLACES http:// LINKS WITH https:// LINKS IN THE VIDEO DESCRIPTION.
 * ONLY LINKS MATCHING A WHITELIST ARE MODIFIED (see preg_replace below).
 * Copyright © 2018 Joel Yliluoma — https://iki.fi/bisqwit/
 * License: MIT
 */

/* Note: You will need to create OAuth credentials at: https://console.developers.google.com/apis/credentials
 * And you will need Google PHP API client library from: https://github.com/googleapis/google-api-php-client/releases
 */

require_once 'vendor/autoload.php';

$client = new Google_Client();
$client->setApplicationName("Client_Library_Examples");
$client->setDeveloperKey(file_get_contents('key.txt'));
$client->setAuthConfig('client_credentials.json');
$client->setScopes('https://www.googleapis.com/auth/youtube');

$service = new Google_Service_YouTube($client);
$client->setRedirectUri('http://127.0.0.1/');
$client->authenticate(urldecode('put your auth code here'));

if(!$client->getAccessToken())
{
  $url = $client->createAuthUrl();
  print "Go to this address. When done, copy the code= parameter from the return URL and paste it on the authenticate() line in this script.\n";
  print $url;
  exit;
}

function UpdateDesc(&$obj)
{
  $desc = $obj->getDescription();
  $desc = preg_replace(
    '@http://((?:www\\.)?(?:twitter|patreon|bisqwit\.iki\.fi|iki\.fi/bisqwit|youtube|youtu\.be|twitch|liberapay|fi\.liberapay|github|steamcommunity))@',
    'https://\1',
    $desc);
  $obj->setDescription($desc);
}

function EditDescription($video_id)
{
  global $service;
  $response = $service->videos->listVideos('snippet,localizations', Array('id' => $video_id));
  
  foreach($response->items as &$video)
  {
    UpdateDesc($video->snippet);
    
    $localiz = $video->getLocalizations();
    foreach($localiz as $lang => &$localization)
    {
      UpdateDesc($localization);
    }
    $video->setLocalizations($localiz);
    
    $resp = $service->videos->update('snippet,localizations', $video);
  }
}

$params = Array('maxResults'=>50, 'forMine'=>true, 'type'=>'video');
for(;;)
{
  $response = $service->search->listSearch('snippet', $params);
  foreach($response->items as &$result)
  {
    $id = $result->id->videoId;
    print "Editing video {$id}\n";
    EditDescription($id);
  }

  if(!empty($response['nextPageToken']))
  {
    $params['pageToken'] = $response['nextPageToken'];
  }
  else
  {
    break;
  }
}