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

import org.w3c.dom.Element;
import org.w3c.dom.Node;

import at.gv.egovernment.moa.id.BuildException;
import at.gv.egovernment.moa.id.auth.data.IdentityLink;
import at.gv.egovernment.moa.util.DOMUtils;
import at.gv.egovernment.moa.util.XPathUtils;

/**
 * Builder for the <code>lt;pr:Person&gt;</code> element to be inserted
 * in the authentication data <code>lt;saml:Assertion&gt;</code>.
 * 
 * @author Paul Ivancsics
 * @version $Id$
 */
public class PersonDataBuilder {

  /**
   * Constructor for PersonDataBuilder.
   */
  public PersonDataBuilder() {
    super();
  }
	/**
	 * Builds the <code>&lt;pr:Person&gt;</code> element.<br/>
	 * Utilizes the parsed <code>&lt;prPerson&gt;</code> from the identity link
	 * and the information regarding inclusion of <code>"Stammzahl"</code> in the 
	 * <code>&lt;pr:Person&gt;</code> data.
	 * 
	 * @param identityLink <code>IdentityLink</code> containing the
	 * 				 attribute <code>prPerson</code>
	 * @param provideStammzahl true if <code>"Stammzahl"</code> is to be included;
	 * 				 false otherwise
	 * @return the <code>&lt;pr:Person&gt;</code> element as a String
   * @throws BuildException on any error
	 */
	public String build(IdentityLink identityLink, boolean provideStammzahl) 
		throws BuildException {
			
    try {
      Element prPerson = (Element)identityLink.getPrPerson().cloneNode(true);
      if (! provideStammzahl) {
        Node prIdentification = XPathUtils.selectSingleNode(prPerson, "pr:Identification/pr:Value");       
        //remove IdentificationValue
        prIdentification.getFirstChild().setNodeValue("");
      }
      String xmlString = DOMUtils.serializeNode(prPerson);
      return xmlString;
    }
    catch (Exception ex) {
    	throw new BuildException(
    		"builder.00", 
    		new Object[] {"PersonData", ex.toString()}, 
    		ex);
    }
	}
}