package at.gv.egovernment.moa.id.auth.builder;

import java.util.List;

import org.w3c.dom.Element;

import at.gv.egovernment.moa.id.auth.data.AuthenticationSession;
import at.gv.egovernment.moa.id.auth.data.IdentityLink;
import at.gv.egovernment.moa.id.auth.data.InfoboxValidatorParams;
import at.gv.egovernment.moa.id.auth.data.InfoboxValidatorParamsImpl;
import at.gv.egovernment.moa.id.auth.parser.IdentityLinkAssertionParser;
import at.gv.egovernment.moa.id.config.auth.VerifyInfoboxParameter;
import at.gv.egovernment.moa.util.XPathUtils;

/**
 * This class provides one method for building parameters needed for 
 * validating an infobox token.
 * 
 * @author Harald Bratko
 */
public class InfoboxValidatorParamsBuilder {

  // hide the default constructor
  private InfoboxValidatorParamsBuilder() {
  }
  
  /**
   * Builds the parameters passed to the validator class for validating an infobox token.
   * 
   * @param session                 The actual Authentication session.
   * @param verifyInfoboxParameter  The configuration parameters for the infobox.
   * @param infoboxTokenList        Contains the infobox token to be validated.
   * @param hideStammzahl           Indicates whether source pins (<code>Stammzahl</code>en) 
   *                                should be hidden in any SAML attributes returned by
   *                                an infobox validator.
   * 
   * @return Parameters for validating an infobox token.
   */
  public static InfoboxValidatorParams buildInfoboxValidatorParams(
    AuthenticationSession session, 
    VerifyInfoboxParameter verifyInfoboxParameter,
    List infoboxTokenList,
    boolean hideStammzahl) 
  {
    InfoboxValidatorParamsImpl infoboxValidatorParams = new InfoboxValidatorParamsImpl();
    IdentityLink identityLink = session.getIdentityLink(); 
    
    // the infobox token to validate
    infoboxValidatorParams.setInfoboxTokenList(infoboxTokenList);
    // configuration parameters
    infoboxValidatorParams.setTrustProfileID(verifyInfoboxParameter.getTrustProfileID());
    infoboxValidatorParams.setSchemaLocations(verifyInfoboxParameter.getSchemaLocations());
    infoboxValidatorParams.setApplicationSpecificParams(verifyInfoboxParameter.getApplicationSpecificParams());
    // authentication session parameters
    infoboxValidatorParams.setBkuURL(session.getBkuURL());
    infoboxValidatorParams.setTarget(session.getTarget());
    infoboxValidatorParams.setBusinessApplication(session.getBusinessService());
    // parameters from the identity link
    infoboxValidatorParams.setFamilyName(identityLink.getFamilyName());
    infoboxValidatorParams.setGivenName(identityLink.getGivenName());
    infoboxValidatorParams.setDateOfBirth(identityLink.getDateOfBirth());
    if (verifyInfoboxParameter.getProvideStammzahl()) {
      infoboxValidatorParams.setIdentificationValue(identityLink.getIdentificationValue());
    }
    infoboxValidatorParams.setIdentificationType(identityLink.getIdentificationType());
    infoboxValidatorParams.setPublicKeys(identityLink.getPublicKey());
    if (verifyInfoboxParameter.getProvideIdentityLink()) {
      Element identityLinkElem = (Element)identityLink.getSamlAssertion().cloneNode(true);
      if (!verifyInfoboxParameter.getProvideStammzahl()) {
        Element identificationValueElem = 
          (Element)XPathUtils.selectSingleNode(identityLinkElem, IdentityLinkAssertionParser.PERSON_IDENT_VALUE_XPATH);
        if (identificationValueElem != null) {
          identificationValueElem.getFirstChild().setNodeValue("");
        }
      }
      infoboxValidatorParams.setIdentityLink(identityLinkElem);
    }
    infoboxValidatorParams.setHideStammzahl(hideStammzahl);
    return infoboxValidatorParams;
  }

}