/*
 * Copyright 2017 Graz University of Technology EAAF-Core Components has been developed in a
 * cooperation between EGIZ, A-SIT Plus, A-SIT, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.2 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:
 * https://joinup.ec.europa.eu/news/understanding-eupl-v12
 *
 * 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.egiz.eaaf.modules.pvp2.impl.opensaml;

import org.opensaml.messaging.context.MessageContext;
import org.opensaml.messaging.encoder.MessageEncodingException;
import org.opensaml.saml.common.SAMLObject;
import org.opensaml.saml.saml2.binding.encoding.impl.HTTPRedirectDeflateEncoder;

import lombok.extern.slf4j.Slf4j;

/**
 * Create deflate encoded SAML2 redirect-binding informations.
 *
 * @author tlenz
 *
 */

@Slf4j
public class StringRedirectDeflateEncoder extends HTTPRedirectDeflateEncoder {
  private String redirectUrl = null;

  @Override
  protected void doEncode() throws MessageEncodingException {
    final MessageContext messageContext = getMessageContext();
    final SAMLObject outboundMessage = (SAMLObject) messageContext.getMessage();

    final String endpointUrl = getEndpointURL(messageContext).toString();

    removeSignature(outboundMessage);

    final String encodedMessage = deflateAndBase64Encode(outboundMessage);

    redirectUrl = buildRedirectURL(messageContext, endpointUrl, encodedMessage);

    log.trace("SAML2 redirect-binding URL was generated as: {}", redirectUrl);

  }

  /**
   * Get generated redirect URL.
   *
   * @return the redirectURL
   */
  public String getRedirectUrl() {
    return redirectUrl;
  }

}