package at.gv.egovernment.moa.spss.api.xmlbind;

import java.util.Iterator;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

import at.gv.egovernment.moa.spss.MOAApplicationException;
import at.gv.egovernment.moa.spss.MOASystemException;
import at.gv.egovernment.moa.spss.api.cmsverify.VerifyCMSSignatureResponse;
import at.gv.egovernment.moa.spss.api.cmsverify.VerifyCMSSignatureResponseElement;
import at.gv.egovernment.moa.spss.api.common.CheckResult;
import at.gv.egovernment.moa.spss.api.common.SignerInfo;

/**
 * Convert a <code>VerifyCMSSignatureResponse</code> API object into its
 * XML representation, according to the MOA XML schema.
 * 
 * @author Patrick Peck
 * @version $Id$
 */
public class VerifyCMSSignatureResponseBuilder {
  /** The XML document containing the response element. */
  private Document responseDoc;
  /** The response <code>VerifyCMSSignatureResponse</code> DOM element. */
  private Element responseElem;

  /**
   * Create a new <code>VerifyCMSSignatureResponseBuilder</code>:
   * 
   * @throws MOASystemException An error occurred setting up the resulting
   * XML document.
   */
  public VerifyCMSSignatureResponseBuilder() throws MOASystemException {
    responseDoc =
      ResponseBuilderUtils.createResponse("VerifyCMSSignatureResponse");
    responseElem = responseDoc.getDocumentElement();
  }

  /**
   * Build a document containing a <code>VerifyCMSSignatureResponse</code>
   * DOM element being the XML representation of the given 
   * <code>VerifyCMSSignatureResponse</code> API object.
   * 
   * @param response The <code>VerifyCMSSignatureResponse</code> to convert
   * to XML.
   * @return A document containing the <code>VerifyCMSSignatureResponse</code>
   * DOM element.
   * @throws MOAApplicationException An error occurred building the response.
   */
  public Document build(VerifyCMSSignatureResponse response)
    throws MOAApplicationException {

    Iterator iter;

    for (iter = response.getResponseElements().iterator(); iter.hasNext();) {
      VerifyCMSSignatureResponseElement responseElement =
        (VerifyCMSSignatureResponseElement) iter.next();
      addResponseElement(responseElement);
    }

    return responseDoc;
  }

  /**
   * Add an element to the response.
   * 
   * @param responseElement The element to add to the response.
   * @throws MOAApplicationException An error occurred adding the element.
   */
  private void addResponseElement(VerifyCMSSignatureResponseElement responseElement)
    throws MOAApplicationException {

    SignerInfo signerInfo = responseElement.getSignerInfo();
    CheckResult signatureCheck = responseElement.getSignatureCheck();
    CheckResult certCheck = responseElement.getCertificateCheck();

    ResponseBuilderUtils.addSignerInfo(
      responseDoc,
      responseElem,
      signerInfo.getSignerCertificate(),
      signerInfo.isQualifiedCertificate(),
      signerInfo.isPublicAuthority(),
      signerInfo.getPublicAuhtorityID());

    ResponseBuilderUtils.addCodeInfoElement(
      responseDoc,
      responseElem,
      "SignatureCheck",
      signatureCheck.getCode(),
      signatureCheck.getInfo());

    ResponseBuilderUtils.addCodeInfoElement(
      responseDoc,
      responseElem,
      "CertificateCheck",
      certCheck.getCode(),
      certCheck.getInfo());
  }

}