/*******************************************************************************
 * 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.io.StringReader;
import java.io.StringWriter;

import at.gv.egovernment.moa.id.auth.exception.BuildException;
import at.gv.egovernment.moa.id.auth.frontend.utils.FormBuildUtils;
import at.gv.egovernment.moa.id.commons.api.IOAAuthParameters;
import at.gv.egovernment.moa.id.commons.config.MOAIDConfigurationConstants;
import at.gv.egovernment.moa.util.MiscUtil;

/**
 * Builder for HTML form requesting the security layer implementation
 * to get the identity link from smartcard by a <code>&lt;InfoboxReadRequest&gt;</code>.
 *  
 * @author Paul Ivancsics
 * @version $Id$
 */
public class GetIdentityLinkFormBuilder extends Builder {
 /** private static String NL contains the NewLine representation in Java*/
  private static final String nl = "\n";
  /** special tag in the HTML template to be substituted for the BKU URL */
  private static final String BKU_TAG = "<BKU>";
  /** special tag in the HTML template to be substituted for the XML request */
  private static final String XMLREQUEST_TAG = "<XMLRequest>";
  /** special tag in the HTML template to be substituted for the data URL */
  private static final String DATAURL_TAG = "<DataURL>";
//  /** special tag in the HTML template to be substituted for certificate info XML request */
//  private static final String CERTINFO_XMLREQUEST_TAG = "<CertInfoXMLRequest>";
//  /** special tag in the HTML template to be substituted for the certificate info data URL */
//  private static final String CERTINFO_DATAURL_TAG = "<CertInfoDataURL>";
  /** special tag in the HTML template to be substituted for the infoboxes to be pushed from the BKU */
  private static final String PUSHINFOBOX_TAG = "<PushInfobox>";
  
  private static final String CONTEXTURL_TAG = "<ContextURL>";
  
  /** special tag in the HTML template to be substituted for the BKU URL */
  /** private static int all contains the representation to replace all tags*/
  private static final int ALL = -1;
  
  private static final String COLOR_TAG = "<COLOR>";
  private static final String REDIRECTTARGETTAG = "<REDIRECTTARGET>";
  private static final String APPLETWIDTH_TAG = "<APPLETWIDTH>";
  private static final String APPLETHEIGHT_TAG = "<APPLETHEIGHT>";

  /** default HTML template */
  private static final String DEFAULT_HTML_TEMPLATE = 
    "<html>" + nl +
    "<head>" + nl +
    "<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\">" + nl +
    "<title>Anmeldung mit B&uuml;rgerkarte</title>" + nl +
    "</head>" + nl +
    "<body>" + nl +
    "<form name=\"GetIdentityLinkForm\"" + nl +
    "      action=\"" + BKU_TAG + "\"" + nl +
    "      method=\"post\">" + nl +
    "  <input type=\"hidden\" " + nl +
    "         name=\"XMLRequest\"" + nl +
    "         value=\"" + XMLREQUEST_TAG + "\"/>" + nl +
    "  <input type=\"hidden\" " + nl +
    "         name=\"DataURL\"" + nl +
    "         value=\"" + DATAURL_TAG + "\"/>" + nl +
    "  <input type=\"hidden\" " + nl +
    "         name=\"PushInfobox\"" + nl +
    "         value=\"" + PUSHINFOBOX_TAG + "\"/>" + nl +
    "  <input type=\"submit\" value=\"Anmeldung mit B&uuml;rgerkarte\"/>" + nl +
    "</form>" + nl +
//    "<form name=\"CertificateInfoForm\"" + nl +
//    "      action=\"" + BKU_TAG + "\"" + nl +
//    "      method=\"post\">" + nl +
//    "  <input type=\"hidden\" " + nl +
//    "         name=\"XMLRequest\"" + nl +
//    "         value=\"" + CERTINFO_XMLREQUEST_TAG + "\"/>" + nl +
//    "  <input type=\"hidden\" " + nl +
//    "         name=\"DataURL\"" + nl +
//    "         value=\"" + CERTINFO_DATAURL_TAG + "\"/>" + nl +
////	"  <input type=\"submit\" value=\"Information zu Wurzelzertifikaten\"/>" + nl +    
//    "  <input type=\"hidden\" value=\"Information zu Wurzelzertifikaten\"/>" + nl +
//    "</form>" + nl +
    "</body>" + nl +
    "</html>";
  
  
  
  
    /**
   * Constructor for GetIdentityLinkFormBuilder.
   */
  public GetIdentityLinkFormBuilder() {
    super();
  }
  /**
   * Builds the HTML form, including XML Request and data URL as parameters.
   * 
   * @param htmlTemplate template to be used for the HTML form;
   *         may be <code>null</code>, in this case a default layout will be produced
   * @param xmlRequest XML Request to be sent as a parameter in the form
   * @param bkuURL URL of the "B&uuml;rgerkartenumgebung" the form will be submitted to;
   *         may be <code>null</code>, in this case the default URL will be used
   * @param dataURL DataURL to be sent as a parameter in the form
 * @param oaParam 
 * @param appletwidth 
 * @param appletheigth 
   */
  public String build(
  	String htmlTemplate, 
    String bkuURL, 
    String xmlRequest, 
    String dataURL, 
    String certInfoXMLRequest, 
    String certInfoDataURL, 
    String pushInfobox, 
    IOAAuthParameters oaParam, 
    String appletheigth,
    String appletwidth, 
  	String contextURL)
  throws BuildException 
  {      
  	String htmlForm = htmlTemplate == null ? DEFAULT_HTML_TEMPLATE : htmlTemplate;
    htmlForm = replaceTag(htmlForm, BKU_TAG, bkuURL, true, ALL);
    htmlForm = replaceTag(htmlForm, XMLREQUEST_TAG, encodeParameter(xmlRequest), true, ALL);
    htmlForm = replaceTag(htmlForm, DATAURL_TAG, dataURL, true, ALL);
    htmlForm = replaceTag(htmlForm, PUSHINFOBOX_TAG, pushInfobox, false, ALL);
    
    htmlForm = replaceTag(htmlForm, CONTEXTURL_TAG, contextURL, false, ALL);
    
//new:wird oben mitreplaced    htmlForm = replaceTag(htmlForm, BKU_TAG, bkuURL);
    
     
    //set applet-background coller
   	if (oaParam != null && MiscUtil.isNotEmpty(oaParam.getConfigurationValue(MOAIDConfigurationConstants.SERVICE_AUTH_TEMPLATES_CUSTOMIZATION_BACKGROUNDCOLOR)))
   		htmlForm = replaceTag(htmlForm, COLOR_TAG, 
   				oaParam.getConfigurationValue(MOAIDConfigurationConstants.SERVICE_AUTH_TEMPLATES_CUSTOMIZATION_BACKGROUNDCOLOR), false, ALL);    	
   	else
		htmlForm = replaceTag(htmlForm, COLOR_TAG, FormBuildUtils.getDefaultMap().get(FormBuildUtils.PARAM_MAIN_BACKGROUNDCOLOR), false, ALL);
    	
   	//set redirect target
   	if (oaParam != null && MiscUtil.isNotEmpty(oaParam.getConfigurationValue(MOAIDConfigurationConstants.SERVICE_AUTH_TEMPLATES_CUSTOMIZATION_APPLETREDIRECTTARGET)))
   		htmlForm = replaceTag(htmlForm, REDIRECTTARGETTAG, 
   				oaParam.getConfigurationValue(MOAIDConfigurationConstants.SERVICE_AUTH_TEMPLATES_CUSTOMIZATION_APPLETREDIRECTTARGET), false, ALL);
   	else
   		htmlForm = replaceTag(htmlForm, REDIRECTTARGETTAG, FormBuildUtils.getDefaultMap().get(FormBuildUtils.PARAM_REDIRECTTARGET), false, ALL);
    
   	//set applet heigh
    if (oaParam != null && MiscUtil.isNotEmpty(oaParam.getConfigurationValue(MOAIDConfigurationConstants.SERVICE_AUTH_TEMPLATES_CUSTOMIZATION_APPLETHEIGHT)))
    	htmlForm = replaceTag(htmlForm, APPLETHEIGHT_TAG, oaParam.getConfigurationValue(MOAIDConfigurationConstants.SERVICE_AUTH_TEMPLATES_CUSTOMIZATION_APPLETHEIGHT), false, ALL);
    else if (MiscUtil.isNotEmpty(appletheigth))
    	htmlForm = replaceTag(htmlForm, APPLETHEIGHT_TAG, appletheigth, false, ALL);
    else
    	htmlForm = replaceTag(htmlForm, APPLETHEIGHT_TAG, "160", false, ALL);
    
    //set applet width
    if (oaParam != null && MiscUtil.isNotEmpty(oaParam.getConfigurationValue(MOAIDConfigurationConstants.SERVICE_AUTH_TEMPLATES_CUSTOMIZATION_APPLETWIDTH)))
    	htmlForm = replaceTag(htmlForm, APPLETWIDTH_TAG, oaParam.getConfigurationValue(MOAIDConfigurationConstants.SERVICE_AUTH_TEMPLATES_CUSTOMIZATION_APPLETWIDTH), false, ALL);
    else if (MiscUtil.isNotEmpty(appletwidth))
    	htmlForm = replaceTag(htmlForm, APPLETWIDTH_TAG, appletwidth, false, ALL); 
    else
    	htmlForm = replaceTag(htmlForm, APPLETWIDTH_TAG, "250", false, ALL);

  	return htmlForm;
  }
  
  
 
  /**
   * Encodes a string for inclusion as a parameter in the form.
   * Double quotes are substituted by <code>"&amp;quot;"</code>.
   * @param s the string to be encoded
   * @return the string encoded
   * @throws BuildException on any exception encountered
   */
  public static String encodeParameter(String s) throws BuildException {
    StringReader in = new StringReader(s);
    StringWriter out = new StringWriter();
    try {
      for (int ch = in.read(); ch >= 0; ch = in.read()) {
        if (ch == '"') {
          out.write("&quot;");
        } else if (ch == '<') {
          out.write("&lt;");
        } else if (ch == '>') {
          out.write("&gt;");
    	} else if (ch == 'ä') {
          out.write("&auml;");
  		} else if (ch == 'ö') {
          out.write("&ouml;");
		} else if (ch == 'ü') {
          out.write("&uuml;");
		} else if (ch == 'Ä') {
          out.write("&Auml;");
		} else if (ch == 'Ö') {
          out.write("&Ouml;");
		} else if (ch == 'Ü') {
          out.write("&Uuml;");
		} else if (ch == 'ß') {
          out.write("&szlig;");
		} else  {
          out.write(ch);
		}
      }
    }
    catch (IOException ex) {
      throw new BuildException("builder.00", new Object[] {"GetIdentityLinkForm", ex.toString()});
    }
    return out.toString();
  }

}