/**
 * Copyright (c) Istituto Nazionale di Fisica Nucleare (INFN). 2006-2016
 *
 * 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 org.glite.security.voms.admin.operations.users;

import java.security.cert.X509Certificate;
import java.util.Date;

import org.glite.security.voms.admin.error.NullArgumentException;
import org.glite.security.voms.admin.event.EventManager;
import org.glite.security.voms.admin.event.user.certificate.UserCertificateAddedEvent;
import org.glite.security.voms.admin.operations.BaseVomsOperation;
import org.glite.security.voms.admin.operations.VOMSContext;
import org.glite.security.voms.admin.operations.VOMSPermission;
import org.glite.security.voms.admin.persistence.dao.VOMSUserDAO;
import org.glite.security.voms.admin.persistence.model.Certificate;
import org.glite.security.voms.admin.persistence.model.VOMSUser;

public class AddUserCertificateOperation extends BaseVomsOperation {

  VOMSUser theUser;
  X509Certificate theCert;

  String subject;
  String issuer;

  Date notAfter;

  protected AddUserCertificateOperation(VOMSUser u, X509Certificate cert) {

    if (u == null)
      throw new NullArgumentException("User cannot be null!");

    if (cert == null)
      throw new NullArgumentException("cert cannot be null!");

    theUser = u;
    theCert = cert;

  }

  protected AddUserCertificateOperation(VOMSUser u, String certSubject,
    String certIssuer, String certNotAfter) {

    if (u == null)
      throw new NullArgumentException("User cannot be null!");

    if (certSubject == null)
      throw new NullArgumentException("certSubject cannot be null!");

    if (certIssuer == null)
      throw new NullArgumentException("certIssuer cannot be null!");

    theUser = u;
    subject = certSubject;
    issuer = certIssuer;

  }

  public static AddUserCertificateOperation instance(VOMSUser u,
    X509Certificate cert) {

    return new AddUserCertificateOperation(u, cert);
  }

  public static AddUserCertificateOperation instance(VOMSUser u,
    String certSubject, String certIssuer, String certNotAfter) {

    return new AddUserCertificateOperation(u, certSubject, certIssuer,
      certNotAfter);
  }

  protected Object doExecute() {

    Certificate cert = null;

    if (theCert != null) {
      cert = VOMSUserDAO.instance().addCertificate(theUser, theCert);
    } else {
      cert = VOMSUserDAO.instance().addCertificate(theUser, subject, issuer);
    }

    EventManager.instance().dispatch(new UserCertificateAddedEvent(theUser, cert));

    return cert;
  }

  protected void setupPermissions() {

    addRequiredPermission(VOMSContext.getVoContext(), VOMSPermission
      .getContainerRWPermissions().setMembershipRWPermission());

  }

}