/**
 * 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 org.glite.security.voms.admin.error.VOMSException;
import org.glite.security.voms.admin.event.EventManager;
import org.glite.security.voms.admin.event.user.certificate.UserRemovedOwnCertificateEvent;
import org.glite.security.voms.admin.operations.BaseUserAdministrativeOperation;
import org.glite.security.voms.admin.operations.CurrentAdmin;
import org.glite.security.voms.admin.persistence.model.Certificate;
import org.glite.security.voms.admin.persistence.model.VOMSUser;

public class RemoveOwnCertificateOperation
  extends BaseUserAdministrativeOperation {

  final Certificate cert;

  public RemoveOwnCertificateOperation(Certificate cert) {

    this.cert = cert;
    setAuthorizedUser(cert.getUser());
  }

  @Override
  protected void setupPermissions() {

    // Do nothing
  }

  @Override
  protected Object doExecute() {

    CurrentAdmin currentAdmin = CurrentAdmin.instance();
    VOMSUser user = currentAdmin.getVoUser();

    if (user == null) {
      throw new VOMSException(
        "No VO user membership linked with the current authenticated user");
    }

    if (currentAdmin.is(cert)) {

      throw new VOMSException(
        "A user can only remove a certificate that is not in use.");
    }

    user.getCertificates()
      .remove(cert);

    EventManager.instance()
      .dispatch(new UserRemovedOwnCertificateEvent(user, cert));

    return cert;
  }

}