/**

  * Copyright 2005-2011 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.actions;

 import org.apache.log4j.MDC;

 import org.kuali.rice.kew.actionrequest.ActionRequestValue;

 import org.kuali.rice.kew.actiontaken.ActionTakenValue;

 import org.kuali.rice.kew.api.exception.InvalidActionTakenException;

 import org.kuali.rice.kew.api.exception.WorkflowException;

 import org.kuali.rice.kew.routeheader.DocumentRouteHeaderValue;

 import org.kuali.rice.kew.service.KEWServiceLocator;

 import org.kuali.rice.kew.api.KewApiConstants;

 import org.kuali.rice.kim.api.identity.principal.PrincipalContract;

 import java.util.Iterator;

 import java.util.List;

 /**

  * Cancels a document at the request of a client app.

  *

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class CancelAction extends ActionTakenEvent {

     private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(CancelAction.class);

     public CancelAction(DocumentRouteHeaderValue rh, PrincipalContract principal) {

         super(KewApiConstants.ACTION_TAKEN_CANCELED_CD, rh, principal);

     }

     public CancelAction(DocumentRouteHeaderValue rh, PrincipalContract principal, String annotation) {

         super(KewApiConstants.ACTION_TAKEN_CANCELED_CD, rh, principal, annotation);

     }

     /* (non-Javadoc)

      * @see org.kuali.rice.kew.actions.ActionTakenEvent#isActionCompatibleRequest(java.util.List)

      */

     @Override

     public String validateActionRules() {

         return validateActionRules(getActionRequestService().findAllPendingRequests(routeHeader.getDocumentId()));

     }

     public String validateActionRules(List<ActionRequestValue> actionRequests) {

         // FYI delyea:  This is new validation check... was not being checked previously

         if (!getRouteHeader().isValidActionToTake(getActionPerformedCode())) {

             return "Document is not in a state to be cancelled";

         }

         List<ActionRequestValue> filteredActionRequests = filterActionRequestsByCode(actionRequests, KewApiConstants.ACTION_REQUEST_COMPLETE_REQ);

         if (!isActionCompatibleRequest(filteredActionRequests)) {

             return "No request for the user is compatible with the Cancel Action";

         }

             // check state before checking kim

         if (! KEWServiceLocator.getDocumentTypePermissionService().canCancel(getPrincipal().getPrincipalId(), getDocumentId(), getRouteHeader().getDocumentType(), getRouteHeader().getCurrentNodeNames(), getRouteHeader().getDocRouteStatus(), getRouteHeader().getInitiatorWorkflowId())) {

             return "User is not authorized to Cancel document";

         }

         return "";

     }

     /* (non-Javadoc)

      * @see org.kuali.rice.kew.actions.ActionTakenEvent#isActionCompatibleRequest(java.util.List)

      */

     @Override

     public boolean isActionCompatibleRequest(List<ActionRequestValue> requests) {

         // can always cancel saved or initiated document

         if (routeHeader.isStateInitiated() || routeHeader.isStateSaved()) {

             return true;

         }

         boolean actionCompatible = false;

         Iterator ars = requests.iterator();

         ActionRequestValue actionRequest = null;

         while (ars.hasNext()) {

             actionRequest = (ActionRequestValue) ars.next();

             String request = actionRequest.getActionRequested();

             // APPROVE and COMPLETE request matches CANCEL Taken code

             if ( (KewApiConstants.ACTION_REQUEST_APPROVE_REQ.equals(request)) ||

                  (KewApiConstants.ACTION_REQUEST_COMPLETE_REQ.equals(request)) ) {

                 actionCompatible = true;

                 break;

             }

         }

         return actionCompatible;

     }

     public void recordAction() throws InvalidActionTakenException {

         MDC.put("docId", getRouteHeader().getDocumentId());

         updateSearchableAttributesIfPossible();

         LOG.debug("Canceling document : " + annotation);

         List actionRequests = getActionRequestService().findAllValidRequests(getPrincipal().getPrincipalId(), getDocumentId(), KewApiConstants.ACTION_REQUEST_COMPLETE_REQ);

         LOG.debug("Checking to see if the action is legal");

         String errorMessage = validateActionRules(actionRequests);

         if (!org.apache.commons.lang.StringUtils.isEmpty(errorMessage)) {

             throw new InvalidActionTakenException(errorMessage);

         }

         LOG.debug("Record the cancel action");

         ActionTakenValue actionTaken = saveActionTaken(findDelegatorForActionRequests(actionRequests));

         LOG.debug("Deactivate all pending action requests");

         actionRequests = getActionRequestService().findPendingByDoc(getDocumentId());

         getActionRequestService().deactivateRequests(actionTaken, actionRequests);

         notifyActionTaken(actionTaken);

         LOG.debug("Canceling document");

         try {

             String oldStatus = getRouteHeader().getDocRouteStatus();

             getRouteHeader().markDocumentCanceled();

             String newStatus = getRouteHeader().getDocRouteStatus();

             KEWServiceLocator.getRouteHeaderService().saveRouteHeader(getRouteHeader());

             notifyStatusChange(newStatus, oldStatus);

         } catch (WorkflowException ex) {

             LOG.warn(ex, ex);

             throw new InvalidActionTakenException(ex.getMessage());

         }

     }

 }