/**
    * 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.test;
  
  import org.kuali.rice.core.api.lifecycle.BaseLifecycle;
  import org.kuali.rice.core.api.lifecycle.Lifecycle;
  import org.kuali.rice.core.framework.resourceloader.SpringResourceLoader;
  import org.kuali.rice.kew.api.WorkflowRuntimeException;
  import org.kuali.rice.kew.batch.KEWXmlDataLoader;
  import org.kuali.rice.kew.service.KEWServiceLocator;
  import org.kuali.rice.kim.api.services.KimApiServiceLocator;
  import org.kuali.rice.kim.impl.services.KimImplServiceLocator;
  import org.kuali.rice.test.BaselineTestCase;
  import org.kuali.rice.test.ClearDatabaseLifecycle;
  import org.kuali.rice.test.SQLDataLoader;
  import org.kuali.rice.test.lifecycles.KEWXmlDataLoaderLifecycle;
  import org.springframework.cache.CacheManager;
  import org.springframework.transaction.support.TransactionTemplate;
  
  import javax.xml.namespace.QName;
  import java.io.InputStream;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Useful superclass for all KEW test cases. Handles setup of test utilities and
   * a test environment. Configures the Spring test environment providing a
   * template method for custom context files in test mode. Also provides a
   * template method for running custom transactional setUp. Tear down handles
   * automatic tear down of objects created inside the test environment.
   */
  @BaselineTestCase.BaselineMode(BaselineTestCase.Mode.ROLLBACK_CLEAR_DB)
  public abstract class KEWTestCase extends BaselineTestCase {
  
      private static final String SQL_FILE = "classpath:org/kuali/rice/kew/test/DefaultSuiteTestData.sql";
  	private static final String XML_FILE = "classpath:org/kuali/rice/kew/test/DefaultSuiteTestData.xml";
      private static final String KRAD_MODULE_NAME = "kew";
  
      public KEWTestCase() {
  		super(KRAD_MODULE_NAME);
  	}
  
      @Override
  	protected List<Lifecycle> getSuiteLifecycles() {
  		List<Lifecycle> suiteLifecycles = super.getSuiteLifecycles();
  		suiteLifecycles.add(new KEWXmlDataLoaderLifecycle(XML_FILE));
  
  		return suiteLifecycles;
  	}
  
  	@Override
  	protected void loadSuiteTestData() throws Exception {
  		super.loadSuiteTestData();
          new SQLDataLoader(SQL_FILE, ";").runSql();
  	}
  
  
      /**
  	 * By default this loads the "default" data set from the DefaultTestData.sql
  	 * and DefaultTestData.xml files. Subclasses can override this to change
  	 * this behaviour
  	 */
  	protected void loadDefaultTestData() throws Exception {
  		// at this point this is constants. loading these through xml import is
  		// problematic because of cache notification
  		// issues in certain low level constants.
  		new SQLDataLoader(
  				"classpath:org/kuali/rice/kew/test/DefaultPerTestData.sql", ";")
  				.runSql();
  
  		KEWXmlDataLoader.loadXmlClassLoaderResource(KEWTestCase.class,
  				"DefaultPerTestData.xml");
  	}
  
  	@Override
  	protected Lifecycle getLoadApplicationLifecycle() {
          SpringResourceLoader springResourceLoader = new SpringResourceLoader(new QName("KEWTestResourceLoader"), "classpath:org/kuali/rice/kew/config/TestKEWSpringBeans.xml", null);
      	springResourceLoader.setParentSpringResourceLoader(getTestHarnessSpringResourceLoader());
      	return springResourceLoader;
  	}
  
      /**
  	 * Default implementation does nothing. Subclasses should override this
  	 * method if they want to perform setup work inside of a database
  	 * transaction.
  	 */
 	protected void setUpAfterDataLoad() throws Exception {
 		// override
 	}
 
 	protected void loadTestData() throws Exception {
 		// override this to load your own test data
 	}
 
 	protected TransactionTemplate getTransactionTemplate() {
 		return TestUtilities.getTransactionTemplate();
 	}
 
    /**
 	 * Initiates loading of per-test data
 	 */
 	@Override
 	protected void loadPerTestData() throws Exception {
         final long t1 = System.currentTimeMillis();
         loadDefaultTestData();
 
 		final long t2 = System.currentTimeMillis();
 		loadTestData();
 
 		final long t3 = System.currentTimeMillis();
 		report("Time to load test-specific test data: " + (t3 - t2));
 
 		setUpAfterDataLoad();
 
 		final long t4 = System.currentTimeMillis();
 		report("Time to run test-specific setup: " + (t4 - t3));
 	}
 
 	/**
 	 * Override the standard per-test lifecycles to prepend
 	 * ClearDatabaseLifecycle and ClearCacheLifecycle
 	 *
 	 * @see org.kuali.rice.test.RiceTestCase#getPerTestLifecycles()
 	 */
 	@Override
 	protected List<Lifecycle> getPerTestLifecycles() {
 		List<Lifecycle> lifecycles = new ArrayList<Lifecycle>();
 		lifecycles.add(new ClearDatabaseLifecycle(getPerTestTablesToClear(),
 				getPerTestTablesNotToClear()));
 		lifecycles.add(new ClearCacheLifecycle());
 		lifecycles.addAll(super.getPerTestLifecycles());
 		return lifecycles;
 	}
 
 	/**
 	 * Flushes the KEW cache(s)
 	 */
 	public class ClearCacheLifecycle extends BaseLifecycle {
 		@Override
 		public void stop() throws Exception {
             clearCacheManagers(KimImplServiceLocator.getLocalCacheManager(), KEWServiceLocator.getLocalCacheManager());
 			super.stop();
 		}
 	}
 
     protected void clearCacheManagers(CacheManager... cacheManagers) {
         for (CacheManager cacheManager : cacheManagers) {
             for (String cacheName : cacheManager.getCacheNames()) {
                 LOG.info("Clearing cache: " + cacheName);
                 cacheManager.getCache(cacheName).clear();
             }
         }
     }
 
 	/**
 	 * Returns the List of tables that should be cleared on every test run.
 	 */
 	protected List<String> getPerTestTablesToClear() {
 		List<String> tablesToClear = new ArrayList<String>();
 		tablesToClear.add("KREW_.*");
 		tablesToClear.add("KRSB_.*");
 		tablesToClear.add("KREN_.*");
         tablesToClear.add("KRMS_.*");
 		return tablesToClear;
 	}
 
 	protected List<String> getPerTestTablesNotToClear() {
 		return new ArrayList<String>();
 	}
 
 	protected void loadXmlFile(String fileName) {
 		try {
 			KEWXmlDataLoader.loadXmlClassLoaderResource(getClass(), fileName);
 		} catch (Exception e) {
 			throw new WorkflowRuntimeException(e);
 		}
 	}
 
 	protected void loadXmlFile(Class clazz, String fileName) {
 		try {
 			KEWXmlDataLoader.loadXmlClassLoaderResource(clazz, fileName);
 		} catch (Exception e) {
 			throw new WorkflowRuntimeException(e);
 		}
 	}
 
 	protected void loadXmlFileFromFileSystem(String fileName) {
 		try {
 			KEWXmlDataLoader.loadXmlFile(fileName);
 		} catch (Exception e) {
 			throw new WorkflowRuntimeException(e);
 		}
 	}
 
 	protected void loadXmlStream(InputStream xmlStream) {
 		try {
 			KEWXmlDataLoader.loadXmlStream(xmlStream);
 		} catch (Exception e) {
 			throw new WorkflowRuntimeException(e);
 		}
 	}
 
 	protected String getPrincipalIdForName(String principalName) {
 		return KimApiServiceLocator.getIdentityService().getPrincipalByPrincipalName(principalName).getPrincipalId();
 	}
 
 	protected String getPrincipalNameForId(String principalId) {
 		return KimApiServiceLocator.getIdentityService().getPrincipal(principalId).getPrincipalName();
 	}
 
 	protected String getGroupIdForName(String namespace, String groupName) {
 		return KimApiServiceLocator.getGroupService().getGroupByNamespaceCodeAndName(namespace, groupName).getId();
 	}
 }