/*

  * 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.xml.export;

 import java.util.Iterator;

 import java.util.List;

 import org.jdom.Element;

 import org.kuali.rice.kew.export.ExportDataSet;

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

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

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

 import org.kuali.rice.kew.rule.bo.RuleTemplate;

 import org.kuali.rice.kew.rule.bo.RuleTemplateAttribute;

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

 import org.kuali.rice.kew.util.KEWConstants;

 import org.kuali.rice.kew.xml.XmlConstants;

 import org.kuali.rice.kew.xml.XmlRenderer;

 /**

  * Exports {@link RuleTemplate}s to XML.

  * 

  * @see RuleTemplate

  *

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

  */

 public class RuleTemplateXmlExporter implements XmlExporter, XmlConstants {

     protected final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(getClass());

     private XmlRenderer renderer = new XmlRenderer(RULE_TEMPLATE_NAMESPACE);

     public Element export(ExportDataSet dataSet) {

         if (!dataSet.getRuleTemplates().isEmpty()) {

             Element rootElement = renderer.renderElement(null, RULE_TEMPLATES);

             rootElement.setAttribute(SCHEMA_LOCATION_ATTR, RULE_TEMPLATE_SCHEMA_LOCATION, SCHEMA_NAMESPACE);

             for (Iterator iterator = dataSet.getRuleTemplates().iterator(); iterator.hasNext();) {

                 RuleTemplate template = (RuleTemplate)iterator.next();

                 exportRuleTemplate(rootElement, template);

             }

             return rootElement;

         }

         return null;

     }

     private void exportRuleTemplate(Element parent, RuleTemplate ruleTemplate) {

         Element templateElement = renderer.renderElement(parent, RULE_TEMPLATE);

         renderer.renderTextElement(templateElement, NAME, ruleTemplate.getName());

         renderer.renderTextElement(templateElement, DESCRIPTION, ruleTemplate.getDescription());

         if (ruleTemplate.getDelegationTemplate() != null) {

             renderer.renderTextElement(templateElement, DELEGATION_TEMPLATE, ruleTemplate.getDelegationTemplate().getName());

         }

         exportAttributes(templateElement, ruleTemplate.getActiveRuleTemplateAttributes());

         exportDefaults(templateElement, ruleTemplate);

     }

     private void exportAttributes(Element parent, List ruleTemplateAttributes) {

         if (!ruleTemplateAttributes.isEmpty()) {

             Element attributesElement = renderer.renderElement(parent, ATTRIBUTES);

             for (Iterator iterator = ruleTemplateAttributes.iterator(); iterator.hasNext();) {

                 RuleTemplateAttribute attribute = (RuleTemplateAttribute) iterator.next();

                 Element attributeElement = renderer.renderElement(attributesElement, ATTRIBUTE);

                 renderer.renderTextElement(attributeElement, NAME, attribute.getRuleAttribute().getName());

                 renderer.renderBooleanElement(attributeElement, REQUIRED, attribute.getRequired(), false);

             }

         }

     }

     private void exportDefaults(Element parent, RuleTemplate ruleTemplate) {

         RuleBaseValues defaultRuleValues = KEWServiceLocator.getRuleService().findDefaultRuleByRuleTemplateId(ruleTemplate.getRuleTemplateId());

         if (defaultRuleValues != null) {

             RuleDelegation defaultDelegationValues = getDefaultDelegationValues(defaultRuleValues);

             Element defaultsElement = renderer.renderElement(parent, RULE_DEFAULTS);

             if (defaultDelegationValues != null) {

                 renderer.renderTextElement(defaultsElement, DELEGATION_TYPE, defaultDelegationValues.getDelegationType());

             }

             renderer.renderTextElement(defaultsElement, DESCRIPTION, defaultRuleValues.getDescription());

             if (defaultRuleValues.getFromDate() != null) {

                     renderer.renderDateElement(defaultsElement, FROM_DATE, defaultRuleValues.getFromDate());

             }

             if (defaultRuleValues.getToDate() != null) {

                     renderer.renderDateElement(defaultsElement, TO_DATE, defaultRuleValues.getToDate());

             }

             renderer.renderBooleanElement(defaultsElement, FORCE_ACTION, defaultRuleValues.getForceAction(), false);

             renderer.renderBooleanElement(defaultsElement, ACTIVE, defaultRuleValues.getActiveInd(), true);

             if (defaultDelegationValues == null) {

                 RuleTemplateOption defaultActionOption = ruleTemplate.getDefaultActionRequestValue();

                 RuleTemplateOption supportsComplete = ruleTemplate.getComplete();

                 RuleTemplateOption supportsApprove = ruleTemplate.getApprove();

                 RuleTemplateOption supportsAck = ruleTemplate.getAcknowledge();

                 RuleTemplateOption supportsFYI = ruleTemplate.getFyi();

                 if (defaultActionOption != null) {

                         String defaultActionValue = (defaultActionOption == null ? null : defaultActionOption.getValue());

                         renderer.renderTextElement(defaultsElement, DEFAULT_ACTION_REQUESTED, defaultActionValue);

                 }

                 if (supportsComplete != null) {

                         String supportsCompleteValue = supportsComplete.getValue();

                         renderer.renderTextElement(defaultsElement, SUPPORTS_COMPLETE, supportsCompleteValue);

                 }

                 if (supportsApprove != null) {

                         String supportsApproveValue = supportsApprove.getValue();

                         renderer.renderTextElement(defaultsElement, SUPPORTS_APPROVE, supportsApproveValue);

                 }

                 if (supportsAck != null) {

                         String supportsAckValue = supportsAck.getValue();

                         renderer.renderTextElement(defaultsElement, SUPPORTS_ACKNOWLEDGE, supportsAckValue);

                 }

                 if (supportsFYI != null) {

                         String supportsFYIValue = supportsFYI.getValue();

                         renderer.renderTextElement(defaultsElement, SUPPORTS_FYI, supportsFYIValue);

                 }

             }

         }

     }

     private RuleDelegation getDefaultDelegationValues(RuleBaseValues defaultRuleValues) {

         List ruleDelegations = KEWServiceLocator.getRuleDelegationService().findByDelegateRuleId(defaultRuleValues.getRuleBaseValuesId());

         if (ruleDelegations.size() > 1) {

             LOG.warn("The rule defaults has more than one associated delegation defaults.");

         }

         return (ruleDelegations.isEmpty() ? null : (RuleDelegation)ruleDelegations.get(0));

     }

 }