/*
* Copyright 2008 Federal Chancellery Austria and
* Graz University of Technology
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package at.gv.egiz.bku.smccstal;

import at.gv.egiz.bku.gui.BKUGUIFacade;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import at.gv.egiz.smcc.CancelledException;
import at.gv.egiz.smcc.LockedException;
import at.gv.egiz.smcc.NotActivatedException;
import at.gv.egiz.smcc.PINProvider;
import at.gv.egiz.smcc.PINSpec;
import at.gv.egiz.smcc.SignatureCard;
import at.gv.egiz.smcc.SignatureCardException;
import at.gv.egiz.stal.ErrorResponse;
import at.gv.egiz.stal.InfoboxReadRequest;
import at.gv.egiz.stal.InfoboxReadResponse;
import at.gv.egiz.stal.STALRequest;
import at.gv.egiz.stal.STALResponse;

public class InfoBoxReadRequestHandler extends AbstractRequestHandler implements
    PINProvider {

  private static Log log = LogFactory.getLog(InfoBoxReadRequestHandler.class);

  private int retryCounter = 0;

  @Override
  public STALResponse handleRequest(STALRequest request) throws InterruptedException {
    if (request instanceof InfoboxReadRequest) {
      InfoboxReadRequest infoBox = (InfoboxReadRequest) request;
      try {
        if (infoBox.getInfoboxIdentifier().equals("IdentityLink")) {
          newSTALMessage("Message.RequestCaption", "Message.IdentityLink");
          log.debug("Handling identitylink infobox");
          byte[] resp = card.getInfobox(infoBox.getInfoboxIdentifier(), this,
              infoBox.getDomainIdentifier());
          if (resp == null) {
            log.info("Got null as result->user cancelled");
            return new ErrorResponse(6001);
          } else {
            try {
              resp = DomainIdConverter.convertDomainId(resp, infoBox
                  .getDomainIdentifier());
            } catch (Exception e) {
              log.error("Cannot convert domain specific id", e);
              return new ErrorResponse(1000);
            }
          }
          InfoboxReadResponse stalResp = new InfoboxReadResponse();
          stalResp.setInfoboxValue(resp);
          return stalResp;
        } else if (SignatureCard.KeyboxName.CERITIFIED_KEYPAIR.equals(infoBox
            .getInfoboxIdentifier())) {
          newSTALMessage("Message.RequestCaption", "Message.CertifiedKeypair");
          log.debug("Handling certified keypair infobox");
          byte[] resp = card
              .getCertificate(SignatureCard.KeyboxName.CERITIFIED_KEYPAIR);
          if (resp == null) {
            return new ErrorResponse(6001);
          }
          InfoboxReadResponse stalResp = new InfoboxReadResponse();
          stalResp.setInfoboxValue(resp);
          return stalResp;
        } else if (SignatureCard.KeyboxName.SECURE_SIGNATURE_KEYPAIR
            .equals(infoBox.getInfoboxIdentifier())) {
          newSTALMessage("Message.RequestCaption",
              "Message.SecureSignatureKeypair");
          log.debug("Handling secure signature keypair infobox");
          byte[] resp = card
              .getCertificate(SignatureCard.KeyboxName.SECURE_SIGNATURE_KEYPAIR);
          if (resp == null) {
            return new ErrorResponse(6001);
          }
          InfoboxReadResponse stalResp = new InfoboxReadResponse();
          stalResp.setInfoboxValue(resp);
          return stalResp;
        } else {
          newSTALMessage("Message.RequestCaption", "Message.InfoboxReadRequest");
          log.warn("Unknown infobox identifier: "
              + infoBox.getInfoboxIdentifier() + " trying generic request");
          byte[] resp = card.getInfobox(infoBox.getInfoboxIdentifier(), this,
              infoBox.getDomainIdentifier());
          if (resp == null) {
            return new ErrorResponse(6001);
          }
          InfoboxReadResponse stalResp = new InfoboxReadResponse();
          stalResp.setInfoboxValue(resp);
          return stalResp;
        }
      } catch (NotActivatedException e) {
        log.info("Citizen card not activated.", e);
        gui.showErrorDialog(BKUGUIFacade.ERR_CARD_NOTACTIVATED, null, this, null);
        waitForAction();
        gui.showWaitDialog(null);
        return new ErrorResponse(6001);
      } catch (LockedException e) {
        log.info("Citizen card locked.", e);
        gui.showErrorDialog(BKUGUIFacade.ERR_CARD_LOCKED, null, this, null);
        waitForAction();
        gui.showWaitDialog(null);
        return new ErrorResponse(6001);
      } catch (CancelledException cx) {
        log.debug("User cancelled request", cx);
        return new ErrorResponse(6001);
      } catch (SignatureCardException e) {
        log.info("Error while reading infobox: " + e);
        return new ErrorResponse(4000);
      }
    } else {
      log.fatal("Got unexpected STAL request: " + request);
      return new ErrorResponse(1000);
    }
  }

  @Override
  public boolean requireCard() {
    return true;
  }

  @Override
  public String providePIN(PINSpec spec, int retries) throws InterruptedException {
    if (retryCounter++ > 0) {
      log.info("PIN wrong retrying ...");
      gui.showCardPINRetryDialog(spec, retries, this, "ok", this, "cancel");
    } else {
      gui.showCardPINDialog(spec, this, "ok", this, "cancel");
    }
    waitForAction();
    gui.showWaitDialog(null);
    if (actionCommand.equals("cancel")) {
      return null;
    }
    return new String(gui.getPin());
  }
}