/*******************************************************************************
 * Copyright 2014 Federal Chancellery Austria
 * MOA-ID 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.
 ******************************************************************************/
/*
 * Copyright 2003 Federal Chancellery Austria
 * MOA-ID 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.id.auth.builder;

import java.io.IOException;
import java.text.MessageFormat;

import at.gv.egovernment.moa.id.auth.exception.BuildException;
import at.gv.egovernment.moa.util.Constants;
import at.gv.egovernment.moa.util.FileUtils;

/**
 * Builder for the <code>&lt;VerifyXMLSignatureRequest&gt;</code> structure
 * used for presenting certificate information in the secure viewer of the security layer implementation.
 * 
 * @author Paul Ivancsics
 * @version $Id$
 */
public class CertInfoVerifyXMLSignatureRequestBuilder extends Builder implements Constants {
  
  /** special tag in the VerifyXMLRequest template to be substituted for a <code>&lt;dsig:Signature&gt;</code> */
  private static final String SIGNATURE_TAG = "<dsig:Signature/>";
  
  /** private static String nl contains the NewLine representation in Java*/
  private static final String nl = "\n";

  /**
   * XML template for the CertInfoVerifyXMLSignatureRequest to be built
   */ 
  static final String CERTINFO_REQUEST =
    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + nl +                                                                  
    "<{0}:VerifyXMLSignatureRequest {2} xmlns:dsig=\"" + DSIG_NS_URI +  "\">" + nl +
    "  <{0}:SignatureInfo>" + nl +
    "    <{0}:SignatureEnvironment>" + nl +
    "      <{1}:XMLContent xml:space=\"preserve\"><dsig:Signature/></{1}:XMLContent>" + nl +
    "    </{0}:SignatureEnvironment>" + nl +
    "    <{0}:SignatureLocation>//dsig:Signature</{0}:SignatureLocation>" + nl +
    "  </{0}:SignatureInfo>" + nl +
    "</{0}:VerifyXMLSignatureRequest>";

  /**
   * Constructor
   */
  public CertInfoVerifyXMLSignatureRequestBuilder() {
    super();
  }
  /**
   * Builds the <code>&lt;VerifyXMLSignatureRequest&gt;</code> structure.
   * @return the XML structure
   * @throws BuildException
   */
  public String build() throws BuildException {
    
    String sl10Prefix;
    String sl11Prefix;
    String slNsDeclaration;
        
//    if (slVersion12) {
            
      sl10Prefix = SL12_PREFIX;
      sl11Prefix = SL12_PREFIX;
      slNsDeclaration = "xmlns:" + SL12_PREFIX + "=\"" + SL12_NS_URI + "\"";
      
//    } else {
//      
//      sl10Prefix = SL10_PREFIX;
//      sl11Prefix = SL11_PREFIX;
//      slNsDeclaration = "xmlns:" + sl11Prefix + "=\"" + SL11_NS_URI + "\" xmlns:" + sl10Prefix + "=\"" + SL10_NS_URI + "\"";
//      
//    }
    
    String certInfoRequest = MessageFormat.format(CERTINFO_REQUEST, new Object[] {sl11Prefix, sl10Prefix, slNsDeclaration});
    String resDsigSignature = "resources/xmldata/CertInfoDsigSignature.xml";
    
    
    try {
      String dsigSignature = FileUtils.readResource(resDsigSignature, "UTF-8");
      certInfoRequest = replaceTag(certInfoRequest, SIGNATURE_TAG, dsigSignature, true, 1);
      return certInfoRequest;
    }
    catch (IOException ex) {
      throw new BuildException("auth.04", new Object[] {resDsigSignature, ex.toString()});
    }
  }

}