/*
    * The MIT License
    *
    * Original work sponsored and donated by National Board of e-Health (NSI), Denmark (http://www.nsi.dk)
    *
    * Copyright (C) 2011 National Board of e-Health (NSI), Denmark (http://www.nsi.dk)
    *
    * Permission is hereby granted, free of charge, to any person obtaining a copy of
    * this software and associated documentation files (the "Software"), to deal in
   * the Software without restriction, including without limitation the rights to
   * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
   * of the Software, and to permit persons to whom the Software is furnished to do
   * so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   *
   * $HeadURL: https://svn.softwareborsen.dk/sosi/trunk/modules/seal/src/main/java/dk/sosi/seal/modelbuilders/ReplyModelBuilder.java $
   * $Id: ReplyModelBuilder.java 8697 2011-09-02 10:33:55Z chg@lakeside.dk $
   */
  package dk.sosi.seal.modelbuilders;
  
  import dk.sosi.seal.SOSIFactory;
  import dk.sosi.seal.model.Reply;
  import dk.sosi.seal.model.SignatureUtil;
  import dk.sosi.seal.model.constants.*;
  import dk.sosi.seal.xml.XmlUtil;
  import org.w3c.dom.Document;
  import org.w3c.dom.Element;
  
  /**
   * Build the Model assuming compliance with DGWS 1.0 format
   *
   * @author Jan Riis
   * @author $LastChangedBy: chg@lakeside.dk $
   * @since 1.0
   */
  public class ReplyModelBuilder extends MessageModelBuilder {
  
  	public ReplyModelBuilder(SOSIFactory fac) {
  		super(fac);
  	}
  
  	/**
  	 * Builds a Reply objects from a DOM document.
  	 *
  	 * @param doc
  	 *            The DOM document used for the Reply.
  	 */
  	public Reply buildModel(Document doc) throws ModelBuildException {
  
  		ModelPrefixResolver prefixResolver = new ModelPrefixResolver();
  
  		// Get soap:Header
  		Element elmSoapHeader = XmlUtil.selectSingleElement(doc, "//" + NameSpaces.NS_SOAP + ":Envelope/" + NameSpaces.NS_SOAP + ":Header", prefixResolver);
  		// Get creation date
  		Element elmCreated = XmlUtil.selectSingleElement(elmSoapHeader, NameSpaces.NS_WSSE + ":Security/" + NameSpaces.NS_WSU + ":Timestamp/" + NameSpaces.NS_WSU + ":Created", prefixResolver);
  
  		String xmlTimestamp = XmlUtil.getTextNodeValue(elmCreated);
  		String dgwsVersion = XmlUtil.isZuluTimeFormat(xmlTimestamp) ? DGWSConstants.VERSION_1_0_1 : DGWSConstants.VERSION_1_0;
  
  
  		Element elmMedcomHeader = XmlUtil.selectSingleElement(elmSoapHeader, MedComTags.HEADER_PREFIXED, prefixResolver);
  		// Get medcom:Linking
  		Element elmLinking = XmlUtil.selectSingleElement(elmMedcomHeader, MedComTags.LINKING_PREFIXED, prefixResolver);
  		// Get the values of the (potentially) 3 elements in the medcom:Linking
  		// root
  		String inResponseToMessageID = null;
  		String flowID = null;
  
  		Element elmInResponseToMessageId = XmlUtil.selectSingleElement(elmLinking, MedComTags.IN_RESPONSE_TO_MESSAGE_ID_PREFIXED, prefixResolver);
  		if (elmInResponseToMessageId != null) {
  			inResponseToMessageID = XmlUtil.getTextNodeValue(elmInResponseToMessageId);
  		}
  		Element elmFlowID = XmlUtil.selectSingleElement(elmLinking, MedComTags.FLOW_ID_PREFIXED, prefixResolver);
  		if (elmFlowID != null) {
  			flowID = XmlUtil.getTextNodeValue(elmFlowID);
  		}
  
  		// medcom:FlowStatus
  		Element elmFlowStatus, elmMedcomFaultCode, elmFaultString, elmFaultCode;
  		Reply reply;
  
  		elmFlowStatus = XmlUtil.selectSingleElement(elmMedcomHeader, MedComTags.FLOW_STATUS_PREFIXED, prefixResolver);
  
  		if (elmFlowStatus == null) {
  			// This could be a fault. Check for soap:Fault in the body.
  			Element fault = XmlUtil.selectSingleElement(doc, "//" + SOAPTags.BODY_PREFIXED + '/' + SOAPTags.FAULT_PREFIXED, prefixResolver);
  			if (fault == null) {
  				throw new ModelBuildException("No " + MedComTags.FLOW_STATUS_PREFIXED + " present in document and no " + SOAPTags.FAULT_PREFIXED + " in "
  						+ SOAPTags.BODY_PREFIXED + "!");
 			}
 
 			elmFaultCode = XmlUtil.selectSingleElement(fault,SOAPTags.FAULTCODE, prefixResolver);
 			elmMedcomFaultCode = XmlUtil.selectSingleElement(fault, SOAPTags.DETAIL + '/' + MedComTags.FAULT_CODE_PREFIXED, prefixResolver);
 			elmFaultString = XmlUtil.selectSingleElement(fault, SOAPTags.FAULTSTRING, prefixResolver);
 
 			if (elmFaultCode == null)
 				throw new ModelBuildException("No " + SOAPTags.FAULTCODE + " in " + SOAPTags.FAULT_PREFIXED);
 
 			if (elmMedcomFaultCode == null)
 				throw new ModelBuildException("No " + MedComTags.FAULT_CODE_PREFIXED + " in " + SOAPTags.FAULT_PREFIXED);
 
 			if (elmFaultString == null)
 				throw new ModelBuildException("No " + SOAPTags.FAULTSTRING + " in " + SOAPTags.FAULT_PREFIXED);
 
 			reply = factory.createNewErrorReply(dgwsVersion, inResponseToMessageID, flowID, XmlUtil.getTextNodeValue(elmMedcomFaultCode),
 					XmlUtil.getTextNodeValue(elmFaultString));
 		} else {
 			reply = factory.createNewReply(dgwsVersion, inResponseToMessageID, flowID, XmlUtil.getTextNodeValue(elmFlowStatus));
 		}
 
 		// Message parameters
 		super.buildModel(reply, doc);
 
 		// Validate Signature
 		SignatureUtil.validateAllSignatures(reply, doc.getElementsByTagNameNS(NameSpaces.DSIG_SCHEMA, DSTags.SIGNATURE), factory.getFederation(), factory.getCredentialVault(),true);
 
 		return reply;
 	}
 }