PHP_SMART_HOME_V3/update.php

<?PHP
/** Includes **/
include_once('./config.php');

//Autoloader
$files = scandir('./app/class/');
$files = array_diff($files, array(
	'.',
	'..',
	'app',
	'ChartJS.php',
	'ChartJS_Line.php',
	'ChartManager.php',
	'DashboardManager.php',
	'Partial.php',
	'Form.php',
	'Route.php',
	'Template.php',
	'Ajax.php',
));

foreach($files as $file) {
	include './app/class/'.  $file;
}
$logManager = new LogManager();

header('Content-type: text/plain; charset=utf8', true);

function sendFile($path)
{
	header($_SERVER["SERVER_PROTOCOL"] . ' 200 OK', true, 200);
	header('Content-Type: application/octet-stream', true);
	header('Content-Disposition: attachment; filename=' . basename($path));
	header('Content-Length: ' . filesize($path), true);
	header('x-MD5: ' . md5_file($path), true);
	readfile($path);
}

$localBinary = "./app/updater/" . str_replace(':', '', $_SERVER['HTTP_X_ESP8266_STA_MAC']) . ".bin";
$logManager->write("[Updater] url: " . $localBinary, LogRecordType::INFO);
$logManager->write("[Updater] version: " . $_SERVER['HTTP_X_ESP8266_SKETCH_MD5'], LogRecordType::INFO);

if (file_exists($localBinary)) {
	$logManager->write("[Updater] version PHP: " . md5_file($localBinary), LogRecordType::INFO);
	if ($_SERVER['HTTP_X_ESP8266_SKETCH_MD5'] != md5_file($localBinary)) {
		sendFile($localBinary);

		//notification
			$notificationMng = new NotificationManager;
			$notificationData = [
				'title' => 'Info',
				'body' => 'Someone device was just updated to new version',
				'icon' => BASEDIR . '/app/templates/images/icon-192x192.png',
			];
		
			if ($notificationData != []) {
				$subscribers = $notificationMng::getSubscription();
				foreach ($subscribers as $key => $subscriber) {
					$logManager->write("[NOTIFICATION] SENDING TO" . $subscriber['id'] . " ", LogRecordType::INFO);
					$notificationMng::sendSimpleNotification(SERVERKEY, $subscriber['token'], $notificationData);
				}
			}
		} else {
			header($_SERVER["SERVER_PROTOCOL"].' 304 Not Modified', true, 304);
		}
	} else {
		header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
	}
	header($_SERVER["SERVER_PROTOCOL"].' 500 no version for ESP MAC', true, 500);
	die();