/*
 * Copyright 2021 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.modules.ehvd.task;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import at.gv.egiz.eaaf.core.api.data.PVPAttributeDefinitions;
import at.gv.egiz.eaaf.core.api.idp.process.ExecutionContext;
import at.gv.egiz.eaaf.core.exceptions.TaskExecutionException;
import at.gv.egiz.eaaf.core.impl.idp.auth.modules.AbstractAuthServletTask;
import at.gv.egovernment.moa.id.auth.data.AuthenticationSessionWrapper;
import at.gv.egovernment.moa.id.auth.exception.AuthenticationException;
import at.gv.egovernment.moa.id.auth.modules.ehvd.ConfigurationProperties;
import at.gv.egovernment.moa.id.auth.modules.ehvd.service.EhvdCommunicationService.EhvdResponseHolder;
import at.gv.egovernment.moa.id.auth.modules.ehvd.service.IEhvdCommunication;
import at.gv.egovernment.moa.id.commons.api.exceptions.MOAIDException;
import at.gv.egovernment.moa.logging.Logger;

/**
 * @author tlenz
 *
 */
@Component("InjectEhvdInformationTask")
public class InjectEhvdInformationTask extends AbstractAuthServletTask {

  @Autowired
  IEhvdCommunication ehvdService;

  /*
   * (non-Javadoc)
   *
   * @see
   * at.gv.egovernment.moa.id.auth.modules.AbstractAuthServletTask#execute(at.gv.
   * egovernment.moa.id.process.api.ExecutionContext,
   * javax.servlet.http.HttpServletRequest,
   * javax.servlet.http.HttpServletResponse)
   */
  @Override
  public void execute(ExecutionContext executionContext, HttpServletRequest request,
      HttpServletResponse response)
      throws TaskExecutionException {
    try {
      final AuthenticationSessionWrapper session = pendingReq.getSessionData(
          AuthenticationSessionWrapper.class);

      // validate internal state
      validateInternalState(session);

      // requesting roles from EHVD
      final EhvdResponseHolder ehvdResponse = ehvdService.getRoles(session.getIdentityLink());

      // inject EHVD roles
      session.setGenericDataToSession(PVPAttributeDefinitions.ROLES_NAME,
          StringUtils.join(ehvdResponse.getRoles(), ";"));

      // inject full EHVD response
      session.setGenericDataToSession(ConfigurationProperties.ATTRIBUTE_URN_EHVD_PREFIX, 
          ehvdResponse.getFullGdaResponse());
      
      // store MOASession into database
      requestStoreage.storePendingRequest(pendingReq);

    } catch (final MOAIDException e) {
      throw new TaskExecutionException(pendingReq, e.getMessage(), e);

    } catch (final Exception e) {
      throw new TaskExecutionException(pendingReq, e.getMessage(), e);

    }
  }

  private void validateInternalState(AuthenticationSessionWrapper session) throws AuthenticationException {
    // check if identityLink is available
    if (session.getIdentityLink() == null) {
      Logger.error("No IdentityLink in session. There is an internal error in process definition");
      throw new AuthenticationException("process.04", null);

    }

  }

}