package at.gv.egiz.moazs.scheme;

import at.gv.egiz.eaaf.core.impl.utils.DOMUtils;
import org.apache.cxf.binding.soap.Soap11;
import org.springframework.stereotype.Component;
import org.w3c.dom.Element;
import org.xml.sax.SAXException;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerException;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

import static at.gv.egiz.moazs.MoaZSException.moaZSExceptionBuilder;

@Component
public class SOAPUtils {

    public Element toDOM(byte[] bytes) throws IOException, SAXException, ParserConfigurationException {
        var stream = new ByteArrayInputStream(bytes);
        return DOMUtils.parseXmlNonValidating(stream);
    }

    public byte[] unwrapSoapEnvelope(Element document)  {
        try {
            var body = document.getElementsByTagNameNS(Soap11.SOAP_NAMESPACE, "Body");
            var item = body.item(0).getFirstChild();

            return DOMUtils.serializeNode(item, true)
                    .getBytes(StandardCharsets.UTF_8);

        } catch (IOException | TransformerException e) {
            throw moaZSExceptionBuilder("Error while parsing message. ").withCause(e).build();
        }
    }

    public String getAppDeliveryIDFrom(Element document) {
        var elements = document.getElementsByTagNameNS(NameSpace.MSG, "AppDeliveryID");

        var appDeliveryIdElement = elements.item(0).getFirstChild();

        return appDeliveryIdElement.getNodeValue();
    }
}