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

<?php

namespace App\Telegram\Middleware;

use App\Support\SafeLog;
use SergiX44\Nutgram\Nutgram;
use SergiX44\Nutgram\Telegram\Properties\ChatMemberStatus;
use SergiX44\Nutgram\Telegram\Properties\ChatType;

/**
 * Allow only group/supergroup administrators (or the creator).
 * Must run after {@see AuthorizedChat}.
 */
class GroupAdminOnly
{
    public function __invoke(Nutgram $bot, callable $next): mixed
    {
        $chatId = $bot->chatId();
        $userId = $bot->userId();
        if ($chatId === null || $userId === null) {
            return null;
        }

        $type = $bot->chat()?->type;
        $typeValue = $type instanceof ChatType ? $type->value : (string) $type;
        if (! in_array($typeValue, [ChatType::GROUP->value, ChatType::SUPERGROUP->value, 'group', 'supergroup'], true)) {
            SafeLog::channel('telegram')->info('telegram GroupAdminOnly: rejected non-group chat', [
                'chat_id' => $chatId,
                'type' => $typeValue,
            ]);

            return null;
        }

        try {
            $member = $bot->getChatMember($chatId, $userId);
        } catch (\Throwable $e) {
            SafeLog::channel('telegram')->warning('telegram GroupAdminOnly: getChatMember failed', [
                'chat_id' => $chatId,
                'user_id' => $userId,
                'error' => $e->getMessage(),
            ]);
            $bot->sendMessage('⛔ Unable to verify admin status.');

            return null;
        }

        $status = $member?->status;
        $statusValue = $status instanceof ChatMemberStatus ? $status->value : (string) $status;
        $ok = in_array($statusValue, [
            ChatMemberStatus::CREATOR->value,
            ChatMemberStatus::ADMINISTRATOR->value,
            'creator',
            'administrator',
        ], true);

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

            return null;
        }

        return $next($bot);
    }
}