/*

  * Copyright 2007-2009 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.document;

 import java.util.Collections;

 import java.util.List;

 import java.util.Map;

 import org.kuali.rice.core.api.exception.RiceRuntimeException;

 import org.kuali.rice.kew.rule.RuleBaseValues;

 import org.kuali.rice.kew.rule.RuleDelegation;

 import org.kuali.rice.kew.rule.web.WebRuleUtils;

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

 import org.kuali.rice.kns.maintenance.KualiMaintainableImpl;

 import org.kuali.rice.kns.document.MaintenanceDocument;

 import org.kuali.rice.kns.web.ui.Section;

 import org.kuali.rice.krad.document.MaintenanceLock;

 import org.kuali.rice.kns.maintenance.Maintainable;

 /**

  * This class is the maintainable implementation for Routing Rules 

  * in KEW (represented by the {@link RuleBaseValues} business object). 

  * 

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

  *

  */

 public class RoutingRuleDelegationMaintainable extends KualiMaintainableImpl {

         /**

          * Override the getSections method on this maintainable so that the Section Containing the various Rule Attributes

          * can be dynamically generated based on the RuleTemplate which is selected.

          */

         @Override

         public List getSections(MaintenanceDocument document, Maintainable oldMaintainable) {

                 List<Section> sections = super.getSections(document, oldMaintainable);

                 return WebRuleUtils.customizeSections(getThisRule(), sections, true);

         }

         /**

          * On creation of a new rule document, we must validate that a rule template and document type are set. 

          */

         @Override

         public void processAfterNew(MaintenanceDocument document,

                         Map<String, String[]> parameters) {

                 initializeBusinessObjects(document);

                 WebRuleUtils.validateRuleAndResponsibility(getOldRuleDelegation(document), getNewRuleDelegation(document), parameters);

                 WebRuleUtils.validateRuleTemplateAndDocumentType(getOldRule(document), getNewRule(document), parameters);

                 WebRuleUtils.establishDefaultRuleValues(getNewRule(document));

                 getNewRule(document).setDocumentId(document.getDocumentHeader().getDocumentNumber());

         }

         /**

          * Creates the initial structure of the new business object so that it can be properly

          * populated with non-null object references.

          */

         private void initializeBusinessObjects(MaintenanceDocument document) {

                 RuleDelegation oldRuleDelegation = getOldRuleDelegation(document);

                 RuleDelegation newRuleDelegation = getNewRuleDelegation(document);

                 if (oldRuleDelegation.getDelegationRuleBaseValues() == null) {

                         oldRuleDelegation.setDelegationRuleBaseValues(new RuleBaseValues());

                 }

                 if (newRuleDelegation.getDelegationRuleBaseValues() == null) {

                         newRuleDelegation.setDelegationRuleBaseValues(new RuleBaseValues());

                 }

         }

         /**

          * This is a hack to get around the fact that when a document is first created, this value is

           * true which causes issues if you want to be able to initialize fields on  the document using

           * request parameters.  See SectionBridge.toSection for the "if" block where it populates

           * Field.propertyValue to see why this causes problems

          */

         @Override

         public void setGenerateDefaultValues(String docTypeName) {                

         }

         /**

      * A complete override of the implementation for saving a Rule

      */

     @Override

     public void saveBusinessObject() {

             WebRuleUtils.clearKeysForSave(getThisRuleDelegation());

             WebRuleUtils.translateResponsibilitiesForSave(getThisRule());

             WebRuleUtils.translateFieldValuesForSave(getThisRule());

             WebRuleUtils.processRuleForDelegationSave(getThisRuleDelegation());

             KEWServiceLocator.getRuleService().makeCurrent(getThisRuleDelegation(), true);

     }

     @Override

     public void processAfterCopy(MaintenanceDocument document, Map<String, String[]> parameters) {

             WebRuleUtils.processRuleForCopy(document.getDocumentNumber(), getOldRule(document), getNewRule(document));

         super.processAfterCopy(document, parameters);

     }

         @Override

         public void processAfterEdit(MaintenanceDocument document,

                         Map<String, String[]> parameters) {

                 if (!getOldRule(document).getCurrentInd()) {

                         throw new RiceRuntimeException("Cannot edit a non-current version of a rule.");

                 }

                 WebRuleUtils.populateForCopyOrEdit(getOldRule(document), getNewRule(document));

                 getNewRule(document).setPreviousVersionId(getOldRule(document).getRuleBaseValuesId()); 

                 getNewRule(document).setDocumentId(document.getDocumentHeader().getDocumentNumber());

                 super.processAfterEdit(document, parameters);

         }

         @Override

         public List<MaintenanceLock> generateMaintenanceLocks() {

                 if (getThisRule().getRuleBaseValuesId() == null) {

                         return Collections.emptyList();

                 }

                 return super.generateMaintenanceLocks();

         }

     @Override

         public String getDocumentTitle(MaintenanceDocument document) {

                 StringBuffer title = new StringBuffer();

         RuleBaseValues rule = getThisRule();

         if (rule.getPreviousVersionId() != null) {

             title.append("Editing Rule Delegation '").append(rule.getDescription()).append("'");

         } else {

             title.append("Adding Rule Delegation '").append(rule.getDescription()).append("'");

         }

         return title.toString();

         }

         protected RuleDelegation getNewRuleDelegation(MaintenanceDocument document) {

                 return (RuleDelegation)document.getNewMaintainableObject().getBusinessObject();

         }

         protected RuleDelegation getOldRuleDelegation(MaintenanceDocument document) {

                 return (RuleDelegation)document.getOldMaintainableObject().getBusinessObject();

         }

         protected RuleDelegation getThisRuleDelegation() {

                 return (RuleDelegation)getBusinessObject();

         }

         protected RuleBaseValues getNewRule(MaintenanceDocument document) {

                 return getNewRuleDelegation(document).getDelegationRuleBaseValues();

         }

         protected RuleBaseValues getOldRule(MaintenanceDocument document) {

                 return getOldRuleDelegation(document).getDelegationRuleBaseValues();

         }

         protected RuleBaseValues getThisRule() {

                 return getThisRuleDelegation().getDelegationRuleBaseValues();

         }

         /**

          * This overridden method ...

          *

          * @see org.kuali.rice.krad.maintenance.KualiMaintainableImpl#prepareForSave()

          */

         @Override

         public void prepareForSave() {

                 super.prepareForSave();

                 WebRuleUtils.translateResponsibilitiesForSave(getThisRule());

         }

 }