<?php
declare(strict_types=1);
require_once __DIR__ . '/config.php';
require_once __DIR__ . '/vendor/autoload.php';

use Fitness\OIDC\OIDC;

// Generate a cryptographically random state & nonce.
$state = bin2hex(random_bytes(16));
$nonce = bin2hex(random_bytes(16));

// Persist them in the session to validate later.
$_SESSION['oidc_state'] = $state;
$_SESSION['oidc_nonce'] = $nonce;

$oidc = new OIDC();
header('Location: ' . $oidc->buildAuthUrl($state, $nonce));
exit;