package at.gv.egiz.moazs;

import at.gv.e_government.reference.namespace.zustellung.mzs.app2mzs_.ConfigType;
import at.gv.e_government.reference.namespace.zustellung.mzs.app2mzs_.ConfigType.ConfigTypeBuilder;
import at.gv.e_government.reference.namespace.zustellung.mzs.app2mzs_.DeliveryRequestType;
import at.gv.e_government.reference.namespace.zustellung.mzs.app2mzs_.DeliveryRequestType.DeliveryRequestTypeBuilder;
import org.springframework.stereotype.Component;

import static at.gv.egiz.moazs.util.NullCoalesce.coalesce;

@Component
public class DeliveryPreprocessor {

    /**
     * Validates and augments an incoming {@code request}
     *
     * Validates a {@code request} to ensure the availability of all mandatory fields. Where possible, the method
     * augments the request with values taken from the app's configuration.
     * @param request
     * @return validated and augmented request
     */
    public DeliveryRequestType preProcess(DeliveryRequestType request) {

        validateRequest(request);

        return new DeliveryRequestTypeBuilder(request)
                .withConfig(coalesce(request.getConfig(), initDefaultConfig()).get())
                .build();
    }

    private void validateRequest(DeliveryRequestType request) {
        if (request.getMetaData() == null)
            throw new IllegalArgumentException("Metadata is missing.");

        if (request.getMetaData().getAppDeliveryID() == null)
            throw new IllegalArgumentException("AppDeliveryID is missing.");
    }

    private ConfigType initDefaultConfig() {
        return new ConfigTypeBuilder()
                .withPerformQueryPersonRequest(false)
                .build();
    }

}