package at.gv.egiz.moazs;

import at.gv.zustellung.app2mzs.xsd.ConfigType;
import at.gv.zustellung.app2mzs.xsd.DeliveryRequestType;
import at.gv.zustellung.app2mzs.xsd.DeliveryRequestType.DeliveryRequestTypeBuilder;
import at.gv.zustellung.app2mzs.xsd.ServerType;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import static at.gv.egiz.moazs.util.NullCoalesce.coalesce;
import static at.gv.zustellung.app2mzs.xsd.ConfigType.configTypeBuilder;
import static at.gv.zustellung.app2mzs.xsd.ServerType.*;

@Component
public class DeliveryRequestAugmenter {

    private final ConfigType defaultMzsConfig;

    @Autowired
    public DeliveryRequestAugmenter(ConfigType defaultMzsConfig) {
        this.defaultMzsConfig = defaultMzsConfig;
    }

    /**
     * Augments an incoming {@code request} by filling gaps with config- or default parameters.
     *
     * @param request
     * @return augmented request
     */
    public DeliveryRequestType augment(DeliveryRequestType request) {

        var config = merge(request.getConfig(), defaultMzsConfig);

        return new DeliveryRequestTypeBuilder(request)
                .withConfig(config)
                .build();
    }

    private ConfigType merge(ConfigType primary, ConfigType fallback) {

        var builder = configTypeBuilder(fallback);

        if(primary != null) {

            if(primary.getServer() != null) {
               builder.withServer(merge(primary.getServer(), fallback.getServer()));
            }

            if(primary.isPerformQueryPersonRequest() != null) {
               builder.withPerformQueryPersonRequest(primary.isPerformQueryPersonRequest());
            }

        }

        return builder.build();

    }

    private ServerType merge(ServerType primary, ServerType fallback) {

        var builder = serverTypeBuilder(fallback);

        if (primary.getX509()      != null) builder.withX509     (primary.getX509()     );
        if (primary.getZUSEUrlID() != null) builder.withZUSEUrlID(primary.getZUSEUrlID());

        return builder.build();
    }
}