oembed.php

<?php

$dir = __DIR__;
require ($dir . '/src/XF.php');

XF::start($dir);
$app = XF::setupApp('XF\Pub\App', [
	'preLoad' => ['bbCodeMedia']
]);

/** @var \XF\Oembed\Controller $oEmbedFetcher */
$oEmbedFetcher = $app->oembed()->controller();

$request = $app->request();
$input = $request->filter([
	'provider' => 'str',
	'id' => 'str',
]);

$showDebugOutput = (\XF::$debugMode && $request->get('_debug'));

if (!empty($input['provider']) && !empty($input['id']))
{
	$input['id'] = str_replace('{{_hash_}}', '#', $input['id']);

	$response = $oEmbedFetcher->outputJson($input['provider'], $input['id']);
	if ($showDebugOutput)
	{
		$response->contentType('text/html', 'utf-8');
		$response->body($app->debugger()->getDebugPageHtml($app));
	}
	$response->send($request);
}
else
{
	header('Content-type: text/plain; charset=utf-8', true, 400);
	echo "Unknown type";
}