<?php
final class SockChatAuth {
    public static function attempt(string $endPoint, string $secret, string $cookie): object {
        if(!empty($cookie)) {
            $method = 'Misuzu';
            $signature = sprintf('verify#%s#%s#%s', $method, $cookie, $_SERVER['REMOTE_ADDR']);
            $signature = hash_hmac('sha256', $signature, $secret);

            $login = curl_init($endPoint);
            curl_setopt_array($login, [
                CURLOPT_AUTOREFERER => false,
                CURLOPT_FAILONERROR => false,
                CURLOPT_FOLLOWLOCATION => true,
                CURLOPT_HEADER => false,
                CURLOPT_POST => true,
                CURLOPT_POSTFIELDS => http_build_query([
                    'method' => $method,
                    'token' => $cookie,
                    'ipaddr' => $_SERVER['REMOTE_ADDR'],
                ], '', '&', PHP_QUERY_RFC3986),
                CURLOPT_RETURNTRANSFER => true,
                CURLOPT_TCP_FASTOPEN => true,
                CURLOPT_CONNECTTIMEOUT => 2,
                CURLOPT_MAXREDIRS => 2,
                CURLOPT_PROTOCOLS => CURLPROTO_HTTPS,
                CURLOPT_TIMEOUT => 5,
                CURLOPT_USERAGENT => 'AJAX Chat',
                CURLOPT_HTTPHEADER => [
                    'Content-Type: application/x-www-form-urlencoded',
                    'X-SharpChat-Signature: ' . $signature,
                ],
            ]);
            $userInfo = json_decode(curl_exec($login));
            curl_close($login);
        }

        if(empty($userInfo->success)) {
            $userInfo = new stdClass;
            $userInfo->success = false;
            $userInfo->user_id = 0;
            $userInfo->username = 'Anonymous';
            $userInfo->colour_raw = 0x40000000;
            $userInfo->rank = 0;
            $userInfo->hierarchy = 0;
            $userInfo->perms = 0;
        }

        return $userInfo;
    }
}