index.php

<?php

use App\Kernel;
use Symfony\Component\ErrorHandler\Debug;
use Symfony\Component\HttpFoundation\Request;

require dirname(__DIR__).'/vendor/autoload.php';

try {
    // Validate required envs
    if (!isset($_ENV['APP_ENV'])) {
        throw new RuntimeException('APP_ENV environment variable is not defined.');
    }
    if (!isset($_ENV['APP_SECRET']) || trim($_ENV['APP_SECRET']) === '') {
        throw new \RuntimeException('APP_SECRET is missing or empty. Set it in your environment configuration.');
    }
    if ($_ENV['APP_ENV'] === 'prod' && strlen($_ENV['APP_SECRET']) < 32) {
        throw new \RuntimeException('APP_SECRET must be at least 32 characters long in production.');
    }

    $debug = filter_var($_ENV['APP_DEBUG'], FILTER_VALIDATE_BOOLEAN);

    if ($debug) {
        umask(0000);

        Debug::enable();
    }

    if ($trustedProxies = $_ENV['TRUSTED_PROXIES'] ?? false) {
        Request::setTrustedProxies(explode(',', $trustedProxies), Request::HEADER_X_FORWARDED_ALL ^ Request::HEADER_X_FORWARDED_HOST);
    }

    if ($trustedHosts = $_ENV['TRUSTED_HOSTS'] ?? false) {
        Request::setTrustedHosts(explode(',', $trustedHosts));
    }

    $kernel = new Kernel($_ENV['APP_ENV'], $debug);
    $request = Request::createFromGlobals();
} catch (\Throwable $e) {
    http_response_code(503);
    header('Content-Type: application/json');
    $body = ['status' => 'DOWN'];
    if (trim($e->getMessage()) !== '') {
        $body['message'] = $e->getMessage();
    }
    error_log($e->getMessage());
    echo json_encode($body) ?: '{"status":"DOWN"}';
    exit;
}
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);