/**
    * Copyright 2005-2013 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.kuali.rice.kew.actionrequest.ActionRequestValue;
  import org.kuali.rice.kew.actiontaken.ActionTakenValue;
  import org.kuali.rice.kew.api.KewApiConstants;
  import org.kuali.rice.kew.api.KewApiServiceLocator;
  import org.kuali.rice.kew.api.exception.InvalidActionTakenException;
  import org.kuali.rice.kew.doctype.bo.DocumentType;
  import org.kuali.rice.kew.api.exception.WorkflowException;
  import org.kuali.rice.kew.exception.WorkflowServiceErrorException;
  import org.kuali.rice.kew.exception.WorkflowServiceErrorImpl;
  import org.kuali.rice.kew.routeheader.DocumentRouteHeaderValue;
  import org.kuali.rice.kew.service.KEWServiceLocator;
  import org.kuali.rice.kim.api.identity.principal.PrincipalContract;
  import org.kuali.rice.kew.engine.node.RouteNodeInstance;
  
  import java.util.ArrayList;
  import java.util.List;
  
  
  /**
   * Super class for all super user action takens.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  abstract class SuperUserActionTakenEvent extends ActionTakenEvent {
  
      private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(SuperUserActionTakenEvent.class);
  
      protected final String superUserAction;
      //protected DocumentRouteStatusChange event;
      private ActionRequestValue actionRequest;
      public static String AUTHORIZATION = "general.routing.superuser.notAuthorized";
  
      protected SuperUserActionTakenEvent(String actionTakenCode, String superUserAction, DocumentRouteHeaderValue routeHeader, PrincipalContract principal) {
          super(actionTakenCode, routeHeader, principal);
          this.superUserAction = superUserAction;
      }
  
      protected SuperUserActionTakenEvent(String actionTakenCode, String superUserAction, DocumentRouteHeaderValue routeHeader, PrincipalContract principal, String annotation, boolean runPostProcessor) {
          super(actionTakenCode, routeHeader, principal, annotation, runPostProcessor);
          this.superUserAction = superUserAction;
      }
  
      /* (non-Javadoc)
       * @see org.kuali.rice.kew.actions.ActionTakenEvent#validateActionRules()
       */
      @Override
      public String validateActionRules() {
          DocumentType docType = getRouteHeader().getDocumentType();
          String principalId =   getPrincipal().getPrincipalId();
          String docId =  getRouteHeader().getDocumentId();
          List<RouteNodeInstance> currentNodeInstances = KEWServiceLocator.getRouteNodeService().getCurrentNodeInstances(docId);
          String documentStatus =  KewApiServiceLocator.getWorkflowDocumentService().getDocumentStatus(docId).getCode();
  
          boolean canAdministerRouting = KEWServiceLocator.getDocumentTypePermissionService().canAdministerRouting(principalId, docType);
          boolean canSuperUserApproveSingleActionRequest = ((KEWServiceLocator.getDocumentTypePermissionService().canSuperUserApproveSingleActionRequest
                  (principalId, docType, currentNodeInstances, documentStatus)) && ((KewApiConstants.SUPER_USER_ACTION_REQUEST_APPROVE).equals(getSuperUserAction())));
          boolean canSuperUserApproveDocument = ((KEWServiceLocator.getDocumentTypePermissionService().canSuperUserApproveDocument
                  (principalId, docType, currentNodeInstances, documentStatus)) && ((KewApiConstants.SUPER_USER_APPROVE).equals(getSuperUserAction())));
          boolean canSuperUserDisapproveDocument = ((KEWServiceLocator.getDocumentTypePermissionService().canSuperUserDisapproveDocument
                  (principalId, docType, currentNodeInstances, documentStatus)) && ((KewApiConstants.SUPER_USER_DISAPPROVE).equals(getSuperUserAction())));
  
          String s = this.superUserAction;
          if (!(canAdministerRouting ||
                canSuperUserApproveSingleActionRequest ||
                canSuperUserApproveDocument ||
                canSuperUserDisapproveDocument )) {
                return "User not authorized to take super user action " + getSuperUserAction() + " on document " + docId;
          }
          return "";
      }
  
      @Override
      public String validateActionRules(List<ActionRequestValue> actionRequests) {
      	return validateActionRules();
      }
  
      public void recordAction() throws InvalidActionTakenException {
  
          String errorMessage = validateActionRules();
          if (!org.apache.commons.lang.StringUtils.isEmpty(errorMessage)) {
              LOG.info("User not authorized");
              List<WorkflowServiceErrorImpl> errors = new ArrayList<WorkflowServiceErrorImpl>();
             errors.add(new WorkflowServiceErrorImpl(errorMessage, AUTHORIZATION));
             throw new WorkflowServiceErrorException(errorMessage, errors);
         }
 
         ActionTakenValue actionTaken = processActionRequests();
 
         try {
         	String oldStatus = getRouteHeader().getDocRouteStatus();
         	//if the document is initiated then set it enroute so we can transition to any other status
         	if (getRouteHeader().isStateInitiated()) {
         		getRouteHeader().markDocumentEnroute();
         		notifyStatusChange(getRouteHeader().getDocRouteStatus(), oldStatus);
         	}
             markDocument();
             String newStatus = getRouteHeader().getDocRouteStatus();
             notifyStatusChange(newStatus, oldStatus);
         } catch (Exception ex) {
             LOG.error("Caught Exception talking to post processor", ex);
             throw new RuntimeException(ex.getMessage());
         }
         
         processActionTaken(actionTaken);
     }
 
     protected abstract void markDocument() throws WorkflowException;
 
     protected ActionTakenValue processActionRequests() throws InvalidActionTakenException {
         LOG.debug("Processing pending action requests");
 
         ActionTakenValue actionTaken = saveActionTaken();
 
         List<ActionRequestValue> actionRequests = getActionRequestService().findPendingByDoc(getDocumentId());
 
         for (ActionRequestValue actionRequest : actionRequests)
         {
             getActionRequestService().deactivateRequest(actionTaken, actionRequest);
         }
 
         notifyActionTaken(actionTaken);
 
         return actionTaken;
     }
 
     /**
      * Allows subclasses to perform any post-processing after the action has been taken
      */
     protected void processActionTaken(ActionTakenValue actionTaken) {
         // no default impl
     }
 
     public ActionRequestValue getActionRequest() {
         return actionRequest;
     }
 
     public void setActionRequest(ActionRequestValue actionRequest) {
         this.actionRequest = actionRequest;
     }
 
     public String getSuperUserAction() {
         return superUserAction;
     }
 }