/*
 * Copyright 2003 Federal Chancellery Austria
 * MOA-SPSS has been developed in a cooperation between BRZ, the Federal
 * Chancellery Austria - ICT staff unit, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 */


package at.gv.egovernment.moa.spss.server.service;

import java.util.Collections;

import javax.xml.namespace.QName;

import org.apache.axis.AxisFault;
import org.apache.axis.i18n.Messages;
import org.w3c.dom.Element;

import at.gv.egovernment.moa.spss.MOAException;
import at.gv.egovernment.moa.spss.MOASystemException;
import at.gv.egovernment.moa.spss.api.cmssign.CreateCMSSignatureRequest;
import at.gv.egovernment.moa.spss.api.cmssign.CreateCMSSignatureResponse;
import at.gv.egovernment.moa.spss.api.xmlbind.CreateCMSSignatureRequestParser;
import at.gv.egovernment.moa.spss.api.xmlbind.CreateCMSSignatureResponseBuilder;
import at.gv.egovernment.moa.spss.api.xmlbind.CreateXMLSignatureRequestParser;
import at.gv.egovernment.moa.spss.api.xmlbind.CreateXMLSignatureResponseBuilder;
import at.gv.egovernment.moa.spss.api.xmlsign.CreateXMLSignatureRequest;
import at.gv.egovernment.moa.spss.api.xmlsign.CreateXMLSignatureResponse;
import at.gv.egovernment.moa.spss.server.invoke.CMSSignatureCreationInvoker;
import at.gv.egovernment.moa.spss.server.invoke.PDFASInvoker;
import at.gv.egovernment.moa.spss.server.invoke.XMLSignatureCreationInvoker;
import at.gv.egovernment.moa.spss.server.transaction.TransactionContext;
import at.gv.egovernment.moa.spss.server.transaction.TransactionContextManager;
import at.gv.egovernment.moa.spss.server.xmlbind.CreatePDFRequest;
import at.gv.egovernment.moa.spss.server.xmlbind.CreatePDFRespone;
import at.gv.egovernment.moa.spss.server.xmlbind.CreatePDFSignatureRequestParser;
import at.gv.egovernment.moa.spss.server.xmlbind.CreatePDFSignatureResponseBuilder;
import at.gv.egovernment.moaspss.logging.Logger;
import at.gv.egovernment.moaspss.util.Constants;
import at.gv.egovernment.moaspss.util.StreamUtils;

/**
 * The service endpoint for the <code>SignatureCreation</code> web service.
 * 
 * @author Patrick Peck
 * @version $Id$
 */
public class SignatureCreationService {
	
	/**
	   * Handle a <code>CreatePDFSignatureRequest</code>.
	   * 
	   * @param request The <code>CreatePDFSignatureRequest</code> to work on
	   * (contained in the 0th element of the array).
	   * @return A <code>CreatePDFSignatureResponse</code> as the only element of
	   * the <code>Element</code> array.
	   * @throws AxisFault An error occurred during handling of the message.
	   */
	  public Element[] CreatePDFSignatureRequest(Element[] request)
	    throws AxisFault {
		  Logger.trace("---- Entering SignatureCreationService");
		  //PDFSignatureCreationInvoker invoker =
			//	  PDFSignatureCreationInvoker.getInstance();
	    Element[] response = new Element[1];

	    // check that we have a CreateXMLSignatureRequest; if not, create an
	    // AxisFault, just like the org.apache.axis.providers.java.MsgProvider
	    if (!Constants.MOA_SPSS_CREATE_PDF_REQUEST.equals(request[0].getLocalName()) ||
	      !Constants.MOA_NS_URI.equals(request[0].getNamespaceURI()))
	    {
	      QName qname =
	        new QName(request[0].getNamespaceURI(), request[0].getLocalName());
	      throw new AxisFault(
	        Messages.getMessage("noOperationForQName", qname.toString())); // TODO GK Operation name does not make it into the error repsonse
	    }

	    // handle the request
	    try {
	        
	      // create a parser and builder for binding API objects to/from XML
	      CreatePDFSignatureRequestParser requestParser =
	        new CreatePDFSignatureRequestParser();
	      CreatePDFSignatureResponseBuilder responseBuilder =
	        new CreatePDFSignatureResponseBuilder();
	      Element reparsedReq;
	      CreatePDFRequest requestObj;
	      CreatePDFRespone responseObj = null;

	      //since Axis (1.1 ff) has problem with namespaces we take the raw request stored by the Axishandler.
	      TransactionContext context = TransactionContextManager.getInstance().getTransactionContext();
	  
	      // validate the request
	      reparsedReq = ServiceUtils.reparseRequest(request[0]);//context.getRequest());
	      
	      // convert to API objects
		  Logger.trace(">>> preparsing Request");
	      requestObj = requestParser.parse(reparsedReq);
		  Logger.trace("<<< preparsed Request");
	      
		  Logger.trace(">>> creating Signature");
	      // invoke the core logic
	      //responseObj = PDFASInvoker.getInstance().createPDFSignature(requestObj, context.getTransactionID());
		  Logger.trace("<<< created Signature");

		  Logger.trace(">>> building Response");
	      // map back to XML
	      response[0] = responseBuilder.build(responseObj).getDocumentElement();
		  Logger.trace("<<< built Response");
	      
	      // save response in transaction
	      context.setResponse(response[0]);
		  Logger.trace("---- Leaving SignatureCreationService");
		  

	    } catch (MOAException e) {
	      AxisFault fault = AxisFault.makeFault(e);
	      fault.setFaultDetail(new Element[] { e.toErrorResponse()});
	      Logger.debug("Anfrage zur Signaturerstellung wurde nicht erfolgreich beendet:" 
	        + System.getProperty("line.separator") + StreamUtils.getStackTraceAsString(e));
	      throw fault;
	    } catch (Throwable t) {
	      MOASystemException e = new MOASystemException("2900", null, t);
	      AxisFault fault = AxisFault.makeFault(e);
	      fault.setFaultDetail(new Element[] { e.toErrorResponse()});
	      Logger.debug("Anfrage zur Signaturerstellung wurde nicht erfolgreich beendet:" 
	        + System.getProperty("line.separator") + StreamUtils.getStackTraceAsString(e));
	      throw fault;
	    }

	    return response;
	  }
	
	 /**
	   * Handle a <code>CreateXMLSignatureRequest</code>.
	   * 
	   * @param request The <code>CreateXMLSignatureRequest</code> to work on
	   * (contained in the 0th element of the array).
	   * @return A <code>CreateXMLSignatureResponse</code> as the only element of
	   * the <code>Element</code> array.
	   * @throws AxisFault An error occurred during handling of the message.
	   */
	  public Element[] CreateCMSSignatureRequest(Element[] request)
	    throws AxisFault {
		  Logger.trace("---- Entering SignatureCreationService");
	    CMSSignatureCreationInvoker invoker =
	      CMSSignatureCreationInvoker.getInstance();
	    Element[] response = new Element[1];

	    // check that we have a CreateXMLSignatureRequest; if not, create an
	    // AxisFault, just like the org.apache.axis.providers.java.MsgProvider
	    if (!Constants.MOA_SPSS_CREATE_CMS_REQUEST.equals(request[0].getLocalName()) ||
	      !Constants.MOA_NS_URI.equals(request[0].getNamespaceURI()))
	    {
	      QName qname =
	        new QName(request[0].getNamespaceURI(), request[0].getLocalName());
	      throw new AxisFault(
	        Messages.getMessage("noOperationForQName", qname.toString())); // TODO GK Operation name does not make it into the error repsonse
	    }

	    // handle the request
	    try {
	        
	      // create a parser and builder for binding API objects to/from XML
	      CreateCMSSignatureRequestParser requestParser =
	        new CreateCMSSignatureRequestParser();
	      CreateCMSSignatureResponseBuilder responseBuilder =
	        new CreateCMSSignatureResponseBuilder();
	      Element reparsedReq;
	      CreateCMSSignatureRequest requestObj;
	      CreateCMSSignatureResponse responseObj;

	      //since Axis (1.1 ff) has problem with namespaces we take the raw request stored by the Axishandler.
	      TransactionContext context = TransactionContextManager.getInstance().getTransactionContext();
	  
	      // validate the request
	      reparsedReq = ServiceUtils.reparseRequest(request[0]);//context.getRequest());

	      // convert to API objects
		  Logger.trace(">>> preparsing Request");
	      requestObj = requestParser.parse(reparsedReq);
		  Logger.trace("<<< preparsed Request");
	      
		  Logger.trace(">>> creating Signature");
	      // invoke the core logic
	      responseObj = invoker.createCMSSignature(requestObj, Collections.EMPTY_SET);
		  Logger.trace("<<< created Signature");

		  Logger.trace(">>> building Response");
	      // map back to XML
	      response[0] = responseBuilder.build(responseObj).getDocumentElement();
		  Logger.trace("<<< built Response");
	      
	      // save response in transaction
	      context.setResponse(response[0]);
		  Logger.trace("---- Leaving SignatureCreationService");
		  

	    } catch (MOAException e) {
	      AxisFault fault = AxisFault.makeFault(e);
	      fault.setFaultDetail(new Element[] { e.toErrorResponse()});
	      Logger.debug("Anfrage zur Signaturerstellung wurde nicht erfolgreich beendet:" 
	        + System.getProperty("line.separator") + StreamUtils.getStackTraceAsString(e));
	      throw fault;
	    } catch (Throwable t) {
	      MOASystemException e = new MOASystemException("2900", null, t);
	      AxisFault fault = AxisFault.makeFault(e);
	      fault.setFaultDetail(new Element[] { e.toErrorResponse()});
	      Logger.debug("Anfrage zur Signaturerstellung wurde nicht erfolgreich beendet:" 
	        + System.getProperty("line.separator") + StreamUtils.getStackTraceAsString(e));
	      throw fault;
	    }

	    return response;
	  }

  /**
   * Handle a <code>CreateXMLSignatureRequest</code>.
   * 
   * @param request The <code>CreateXMLSignatureRequest</code> to work on
   * (contained in the 0th element of the array).
   * @return A <code>CreateXMLSignatureResponse</code> as the only element of
   * the <code>Element</code> array.
   * @throws AxisFault An error occurred during handling of the message.
   */
  public Element[] CreateXMLSignatureRequest(Element[] request)
    throws AxisFault {
	  Logger.trace("---- Entering SignatureCreationService");
    XMLSignatureCreationInvoker invoker =
      XMLSignatureCreationInvoker.getInstance();
    Element[] response = new Element[1];

    // check that we have a CreateXMLSignatureRequest; if not, create an
    // AxisFault, just like the org.apache.axis.providers.java.MsgProvider
    if (!Constants.MOA_SPSS_CREATE_XML_REQUEST.equals(request[0].getLocalName()) ||
      !Constants.MOA_NS_URI.equals(request[0].getNamespaceURI()))
    {
      QName qname =
        new QName(request[0].getNamespaceURI(), request[0].getLocalName());
      throw new AxisFault(
        Messages.getMessage("noOperationForQName", qname.toString())); // TODO GK Operation name does not make it into the error repsonse
    }

    // handle the request
    try {
        
      // create a parser and builder for binding API objects to/from XML
      CreateXMLSignatureRequestParser requestParser =
        new CreateXMLSignatureRequestParser();
      CreateXMLSignatureResponseBuilder responseBuilder =
        new CreateXMLSignatureResponseBuilder();
      Element reparsedReq;
      CreateXMLSignatureRequest requestObj;
      CreateXMLSignatureResponse responseObj;

      //since Axis (1.1 ff) has problem with namespaces we take the raw request stored by the Axishandler.
      TransactionContext context = TransactionContextManager.getInstance().getTransactionContext();
  
      // validate the request
      reparsedReq = ServiceUtils.reparseRequest(request[0]);//context.getRequest());

      // convert to API objects
	  Logger.trace(">>> preparsing Request");
      requestObj = requestParser.parse(reparsedReq);
	  Logger.trace("<<< preparsed Request");
      
	  Logger.trace(">>> creating Signature");
      // invoke the core logic
      responseObj = invoker.createXMLSignature(requestObj, Collections.EMPTY_SET);
	  Logger.trace("<<< created Signature");

	  Logger.trace(">>> building Response");
      // map back to XML
      response[0] = responseBuilder.build(responseObj).getDocumentElement();
	  Logger.trace("<<< built Response");
      
      // save response in transaction
      context.setResponse(response[0]);
	  Logger.trace("---- Leaving SignatureCreationService");
	  

    } catch (MOAException e) {
      AxisFault fault = AxisFault.makeFault(e);
      fault.setFaultDetail(new Element[] { e.toErrorResponse()});
      Logger.debug("Anfrage zur Signaturerstellung wurde nicht erfolgreich beendet:" 
        + System.getProperty("line.separator") + StreamUtils.getStackTraceAsString(e));
      throw fault;
    } catch (Throwable t) {
      MOASystemException e = new MOASystemException("2900", null, t);
      AxisFault fault = AxisFault.makeFault(e);
      fault.setFaultDetail(new Element[] { e.toErrorResponse()});
      Logger.debug("Anfrage zur Signaturerstellung wurde nicht erfolgreich beendet:" 
        + System.getProperty("line.separator") + StreamUtils.getStackTraceAsString(e));
      throw fault;
    }

    return response;
  }
}