university-esports-mainz.de/public/elotracker/update.php

<?php

require_once __DIR__."/../util/dotenv.php";

header("X-Accel-Buffering: no");
header('Content-Type: text/event-stream');
header('Cache-Control: no-cache');
header('Connection: keep-alive');

ignore_user_abort(true);

function sendEvent(string $event, string $data): void{
	if (php_sapi_name() === 'cli')
		return;
	echo "event: $event\n";
	echo "data: $data\n\n";
	ob_flush();
	flush();
}


require_once __DIR__."/../util/mysql_connect.php";
$conn = new MySQLConnection();

$update_limit = $_ENV["UPDATE_LIMIT_MINUTES"];

$result = $conn->query("
	SELECT date
	FROM updates
	WHERE date > SUBTIME(NOW(), '00:$update_limit:00')
	LIMIT 1
");
if ($result->num_rows > 0) {
	$response = [
		"limit" => $update_limit,
		"last" => $result->fetch_assoc()["date"]
	];
	sendEvent("forbidden", json_encode($response));
	die;
}

$conn->query("INSERT INTO updates VALUES ()");

require_once __DIR__."/Tracker.php";

sendEvent("progress", 0);

$tracker = new Tracker();
$tracker->update(function($value){
	sendEvent('progress', $value);
});

sendEvent("done", "");