package at.gv.egiz.pdfas.impl.xmldsig;

import at.gv.egiz.pdfas.api.commons.SignatureInformation;
import at.gv.egiz.pdfas.api.xmldsig.XMLDsigData;
import at.gv.egiz.pdfas.commandline.CommandlineConnectorChooser;
import at.gv.egiz.pdfas.framework.ConnectorParameters;
import at.knowcenter.wag.egov.egiz.PdfAS;
import at.knowcenter.wag.egov.egiz.exceptions.ConnectorException;
import at.knowcenter.wag.egov.egiz.exceptions.ConnectorFactoryException;
import at.knowcenter.wag.egov.egiz.exceptions.SignatureException;
import at.knowcenter.wag.egov.egiz.pdf.SignatureHolder;
import at.knowcenter.wag.egov.egiz.sig.SignatureData;
import at.knowcenter.wag.egov.egiz.sig.SignatureObject;
import at.knowcenter.wag.egov.egiz.sig.connectors.Connector;
import at.knowcenter.wag.egov.egiz.sig.connectors.bku.SignSignatureObject;
import at.knowcenter.wag.egov.egiz.sig.signatureobject.SignatureObjectHelper;

/**
 * Utility class for reconstructing xmldsig
 * 
 * @author exthex
 *
 */
public class XMLDsigReconstructor {
   
   /**
    * Reconstructs the xmldsig from the given parameters.
    * 
    * @param si the signature information from which to reconstruct the xmldsig
    * @param connectorType the type of connector (usually BKU or MOA) to use to create the xmldsig
    * @return
    * @throws ConnectorException
    * @throws ConnectorFactoryException
    * @throws SignatureException
    */
   public static XMLDsigData reconstruct(SignatureInformation si, String connectorType) throws ConnectorException, ConnectorFactoryException, SignatureException {
      SignatureHolder holder = (SignatureHolder)si.getInternalSignatureInformation();
      SignatureObject sigObject = holder.getSignatureObject();
      
      SignSignatureObject so = SignatureObjectHelper.convertSignatureObjectToSignSignatureObject(sigObject);
      SignatureData sd = PdfAS.convertSignatureHolderToSignatureData(holder);

      String profile = sigObject.getSignatureTypeDefinition().getType();
      String connectorId = CommandlineConnectorChooser.chooseCommandlineConnectorForVerify(connectorType, sigObject.getKZ(), so.id, profile);
    
      ConnectorParameters cp = new ConnectorParameters();
      cp.setProfileId(profile);
      Connector c = at.gv.egiz.pdfas.framework.ConnectorFactory.createConnector(connectorId, cp);
      
      return c.reconstructXMLDsig(sd, so);
   }

}