reactor/reactor

Hello folks, I have a code done in imperative style, where I did some database checks on ClientInfo entity object with mac address and username. If it esists in DB, I am doing something, and if it doesn't I am trying to do something else and return the ClientInfoModel object, which is nothing but the DTO. My previous code is as follows.

public ClientInfoModel registerClient(ClientInfoModel clientInfoModel) {
        Optional<ClientInfo> clientInfoOptional = clientInfoRepository
                .findByMacAndUsername(clientInfoModel.getMac(), clientInfoModel.getUsername());
        ClientInfo clientInfo;
        if (clientInfoOptional.isEmpty()) {
            clientInfo = new ClientInfo();
        } else {
            clientInfo = clientInfoOptional.get();
        }
        BeanUtils.copyProperties(clientInfoModel, clientInfo);
        clientInfoRepository.save(clientInfo);
        return clientInfoModel;
    }

Now I want to change this code to reactive style. I have used R2DBC driver for MariaDB and used it's instance. Note that I have another DB call to save the object after this check. Can someone help me the appropriate way to write this code to reactive style?

    public Mono<ClientInfoModel> registerClient(ClientInfoModel clientInfoModel) {
        Mono<ClientInfo> clientInfoMono = template.selectOne(
                query(
                    where("mac").is(clientInfoModel.getMac())
                    .and("username").is(clientInfoModel.getUsername())
                ), ClientInfo.class);

        return clientInfoMono.zipWith(clientInfo -> {
            if (clientInfo != null) {
                BeanUtils.copyProperties(clientInfoModel, clientInfo);
                clientInfoRepository.save(clientInfo);
            } else {
                ClientInfo clientInfo1 = new ClientInfo();
                BeanUtils.copyProperties(clientInfoModel, clientInfo1);
                clientInfoRepository.save(clientInfo1);
            }
            return Mono.just(clientInfoModel);
        });
}

Note that it is giving me an error on calling BeanUtils.copyProperties(source, target), also I think the save methods was not called in proper reactive style.