coruna-lab/app/Telegram/Middleware/GroupAdminOnly.php

<?php

namespace App\Telegram\Middleware;

use SergiX44\Nutgram\Nutgram;
use SergiX44\Nutgram\Telegram\Properties\ChatMemberStatus;

class GroupAdminOnly
{
    public function __invoke(Nutgram $bot, callable $next): mixed
    {
        $chatId = $bot->chatId();
        $userId = $bot->userId();
        if ($chatId === null || $userId === null) {
            return null;
        }

        try {
            $member = $bot->getChatMember($chatId, $userId);
        } catch (\Throwable) {
            $bot->sendMessage('⛔ Unable to verify admin status.');

            return null;
        }

        $status = $member?->status;
        $ok = $status === ChatMemberStatus::CREATOR
            || $status === ChatMemberStatus::ADMINISTRATOR
            || $status === 'creator'
            || $status === 'administrator';

        if (! $ok) {
            $bot->sendMessage('⛔ Only group admins can use this command.');

            return null;
        }

        return $next($bot);
    }
}