/*
    * Copyright 2005-2007 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.engine;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  
  import java.io.Serializable;
  
  import javax.xml.namespace.QName;
  
  import org.junit.Test;
  import org.kuali.rice.kew.api.WorkflowDocument;
  import org.kuali.rice.kew.api.WorkflowDocumentFactory;
  import org.kuali.rice.kew.api.WorkflowRuntimeException;
  import org.kuali.rice.kew.engine.node.Branch;
  import org.kuali.rice.kew.engine.node.BranchState;
  import org.kuali.rice.kew.messaging.MessageServiceNames;
  import org.kuali.rice.kew.messaging.exceptionhandling.DocumentMessageExceptionHandler;
  import org.kuali.rice.kew.postprocessor.DefaultPostProcessor;
  import org.kuali.rice.kew.postprocessor.DocumentRouteStatusChange;
  import org.kuali.rice.kew.postprocessor.ProcessDocReport;
  import org.kuali.rice.kew.routeheader.DocumentRouteHeaderValue;
  import org.kuali.rice.kew.service.KEWServiceLocator;
  import org.kuali.rice.kew.test.KEWTestCase;
  import org.kuali.rice.kew.test.TestUtilities;
  import org.kuali.rice.kew.util.KEWConstants;
  import org.kuali.rice.ksb.api.KsbApiServiceLocator;
  import org.kuali.rice.ksb.api.bus.support.JavaServiceDefinition;
  import org.kuali.rice.ksb.messaging.service.KSBJavaService;
  
  public class StandardWorkflowEngineTest extends KEWTestCase {
  
  	protected void loadTestData() throws Exception {
  		loadXmlFile("EngineConfig.xml");
  	}
  
  	/**
  	 * Tests that the proper state is set up on the root branch in the document
  	 * to indicate that both PROCESSED and FINAL callbacks have been made into
  	 * the post processor.
  	 */
  	@Test public void testSystemBranchState() throws Exception {
  		// route the document to final
  		WorkflowDocument document = WorkflowDocumentFactory.createDocument(getPrincipalIdForName("ewestfal"), "SimpleDocType");
  		document.route("");
  		assertTrue("Document should be final.", document.isFinal());
  
  		// now look at the branch state
  		DocumentRouteHeaderValue routeHeader = KEWServiceLocator.getRouteHeaderService().getRouteHeader(document.getDocumentId());
  		Branch rootBranch = routeHeader.getRootBranch();
  		assertNotNull(rootBranch);
  		BranchState processedBranchState = rootBranch.getBranchState(KEWConstants.POST_PROCESSOR_PROCESSED_KEY);
  		BranchState finalBranchState = rootBranch.getBranchState(KEWConstants.POST_PROCESSOR_FINAL_KEY);
  		assertNotNull(processedBranchState);
  		assertNotNull(finalBranchState);
  		assertEquals("true", processedBranchState.getValue());
  		assertEquals("true", finalBranchState.getValue());
  		assertEquals(1, TestPostProcessor.processedCount);
  		assertEquals(1, TestPostProcessor.finalCount);
  	}
  
  	/**
  	 * Tests that a FINAL document can go into exception routing and recover
  	 * properly while only calling the PROCESSED and FINAL callbacks once.
  	 */
  	@Test public void testFinalDocumentExceptionRoutingRecovery() throws Exception {
  
  		// route the document to final
  		WorkflowDocument document = WorkflowDocumentFactory.createDocument(getPrincipalIdForName("ewestfal"), "SimpleDocType");
  		document.route("");
  		assertTrue("Document should be final.", document.isFinal());
  		assertEquals(1, TestPostProcessor.processedCount);
  		assertEquals(1, TestPostProcessor.finalCount);
  
  		// now queue up an exploder which should push the document into
  		// exception routing
  		JavaServiceDefinition serviceDef = new JavaServiceDefinition();
  		serviceDef.setPriority(new Integer(1));
  		serviceDef.setQueue(true);
  		serviceDef.setRetryAttempts(0);
  		serviceDef.setServiceInterface(KSBJavaService.class.getName());
  		serviceDef.setServiceName(new QName("KEW", "exploader"));
  		serviceDef.setService(new ImTheExploderProcessor());
 
 		serviceDef.setMessageExceptionHandler(DocumentMessageExceptionHandler.class.getName());
 		serviceDef.validate();
 		KsbApiServiceLocator.getServiceBus().publishService(serviceDef, true);
 
 		KSBJavaService exploderAsService = (KSBJavaService) MessageServiceNames.getServiceAsynchronously(new QName("KEW", "exploader"), KEWServiceLocator.getRouteHeaderService().getRouteHeader(document.getDocumentId()));
 		exploderAsService.invoke("");
 		// we need to make the exploder a service to get this going again...
 		// SpringServiceLocator.getRouteQueueService().requeueDocument(document.getDocumentId(),
 		// ImTheExploderProcessor.class.getName());
 		// fail("Should have exploded!!!");
 		TestUtilities.waitForExceptionRouting();
 
 		// the document should be in exception routing now
 		document = WorkflowDocumentFactory.loadDocument(getPrincipalIdForName("ewestfal"), document.getDocumentId());
 		assertTrue("Document should be in exception routing.", document.isException());
 		assertEquals(1, TestPostProcessor.processedCount);
 		assertEquals(1, TestPostProcessor.finalCount);
 
 		assertTrue("ewestfal should have a complete request.", document.isCompletionRequested());
 		document.complete("");
 
 		// the document should be final once again
 		document = WorkflowDocumentFactory.loadDocument(getPrincipalIdForName("ewestfal"), document.getDocumentId());
 		assertTrue("Document should be final.", document.isFinal());
 		assertEquals(1, TestPostProcessor.processedCount);
 		assertEquals(1, TestPostProcessor.finalCount);
 	}
 
 	public void tearDown() throws Exception {
 	    try {
 		TestPostProcessor.resetProcessedCount();
 		TestPostProcessor.resetFinalCount();
 	    } finally {
 		super.tearDown();
 	    }
 	}
 
 	public static class TestPostProcessor extends DefaultPostProcessor {
 
 		public static int finalCount = 0;
 
 		public static int processedCount = 0;
 
 		public ProcessDocReport doRouteStatusChange(DocumentRouteStatusChange statusChangeEvent) throws Exception {
 			if (KEWConstants.ROUTE_HEADER_PROCESSED_CD.equals(statusChangeEvent.getNewRouteStatus())) {
 				processedCount++;
 			} else if (KEWConstants.ROUTE_HEADER_FINAL_CD.equals(statusChangeEvent.getNewRouteStatus())) {
 				finalCount++;
 			}
 			return new ProcessDocReport(true);
 		}
 
 		public static void resetProcessedCount() {
 			processedCount = 0;
 		}
 
 		public static void resetFinalCount() {
 			finalCount = 0;
 		}
 	}
 
 	public static class ImTheExploderProcessor implements KSBJavaService {
 
 		public void invoke(Serializable payLoad) {
 			throw new WorkflowRuntimeException("I'm the Exploder!!!");
 		}
 
 	}
 
 }