/**
 * 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.operations.BaseVoReadOperation;
import org.glite.security.voms.admin.operations.VOMSContext;
import org.glite.security.voms.admin.operations.VOMSPermission;
import org.glite.security.voms.admin.persistence.error.NoSuchUserException;
import org.glite.security.voms.admin.persistence.model.VOMSUser;

public class ListUserGroupsOperation extends BaseVoReadOperation {

  String username, caDN;

  private ListUserGroupsOperation(String name, String ca) {

    username = name;
    caDN = ca;

  }

  protected Object doExecute() {

    VOMSUser u = (VOMSUser) FindUserOperation.instance(username, caDN)
      .execute();
    if (u == null)
      throw new NoSuchUserException("No user '" + username + "," + caDN
        + "' found in org.glite.security.voms.admin.persistence.error.");

    return u.getGroups();
  }

  public static ListUserGroupsOperation instance(String username, String caDn) {

    return new ListUserGroupsOperation(username, caDn);
  }

  protected void setupPermissions() {

    addRequiredPermission(VOMSContext.getVoContext(), VOMSPermission
      .getContainerReadPermission().setMembershipReadPermission());
  }
}