/**
    * Copyright 2005-2012 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.kew.impl.action;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.log4j.Logger;
  import org.kuali.rice.core.api.exception.RiceIllegalArgumentException;
  import org.kuali.rice.core.api.reflect.DataDefinition;
  import org.kuali.rice.kew.actions.ActionTakenEvent;
  import org.kuali.rice.kew.api.WorkflowRuntimeException;
  import org.kuali.rice.kew.api.action.ActionInvocation;
  import org.kuali.rice.kew.api.action.ActionInvocationQueue;
  import org.kuali.rice.kew.api.action.ActionType;
  import org.kuali.rice.kew.api.exception.InvalidActionTakenException;
  import org.kuali.rice.kew.api.exception.ResourceUnavailableException;
  import org.kuali.rice.kew.routeheader.DocumentRouteHeaderValue;
  import org.kuali.rice.kew.service.KEWServiceLocator;
  import org.kuali.rice.kim.api.identity.principal.Principal;
  
  /**
   * Reference implementation of the ActionInvocationQueue.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class ActionInvocationQueueImpl implements ActionInvocationQueue {
  
      private static final Logger LOG = Logger.getLogger(ActionInvocationQueueImpl.class);
  
      @Override
      public void invokeAction(String principalId, String documentId, ActionInvocation invocation) {
          if (StringUtils.isBlank(principalId)) {
              throw new RiceIllegalArgumentException("principalId is null or blank");
          }
  
          if (StringUtils.isBlank(documentId)) {
              throw new RiceIllegalArgumentException("documentId is null");
          }
  
          if (invocation == null) {
              throw new RiceIllegalArgumentException("invocation is null");
          }
  
  
          KEWServiceLocator.getRouteHeaderService().lockRouteHeader(documentId, true);
          DocumentRouteHeaderValue document = KEWServiceLocator.getRouteHeaderService().getRouteHeader(documentId);
  
          Principal principal = KEWServiceLocator.getIdentityHelperService().getPrincipal(principalId);
          List<DataDefinition> parameters = new ArrayList<DataDefinition>();
          parameters.add(new DataDefinition(document));
          parameters.add(new DataDefinition(principal));
          parameters.add(new DataDefinition(""));
  
          try {
              final ActionTakenEvent action = KEWServiceLocator.getActionRegistry().createAction(invocation.getAction().getCode(), parameters);
              if (!document.isValidActionToTake(invocation.getAction().getCode())) {
                  LOG.warn("Action "
                          + invocation.getAction()
                          + " is not a valid action to take against document "
                          + document.getDocumentId()
                          + " by principal with name '"
                          + principal.getPrincipalName()
                          + "'");
                  return;
              } else if (!KEWServiceLocator.getActionRegistry().getValidActions(principal, document).getValidActions()
                      .contains(ActionType.fromCode(action.getActionTakenCode()))) {
                  LOG.warn("Action "
                          + action.getActionTakenCode()
                          + " is not valid for document "
                          + document.getDocumentId()
                          + " by principal with name '"
                          + principal.getPrincipalName()
                          + "'");
                  return;
              }
              action.performAction();
          } catch (ResourceUnavailableException e) {
              throw new WorkflowRuntimeException(e);
          } catch (InvalidActionTakenException e) {
              throw new WorkflowRuntimeException(e);
          }
  
      }
  
 }