/*

  * Copyright 2006-2011 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.kns.service.impl;

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import org.kuali.rice.core.api.component.Component;

 import org.kuali.rice.core.api.config.property.ConfigurationService;

 import org.kuali.rice.core.framework.parameter.ParameterConstants.COMPONENT;

 import org.kuali.rice.kns.bo.BusinessObject;

 import org.kuali.rice.kns.datadictionary.AttributeDefinition;

 import org.kuali.rice.kns.datadictionary.BusinessObjectEntry;

 import org.kuali.rice.kns.datadictionary.DocumentEntry;

 import org.kuali.rice.kns.datadictionary.TransactionalDocumentEntry;

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

 import org.kuali.rice.kns.lookup.LookupUtils;

 import org.kuali.rice.kns.service.DataDictionaryService;

 import org.kuali.rice.kns.service.KNSServiceLocator;

 import org.kuali.rice.kns.service.KNSServiceLocatorWeb;

 import org.kuali.rice.kns.service.KualiModuleService;

 import org.kuali.rice.kns.service.RiceApplicationConfigurationService;

 import org.kuali.rice.kns.util.KNSConstants;

 import org.kuali.rice.kns.util.KNSUtils;

 //@Transactional

 public class RiceApplicationConfigurationServiceImpl implements RiceApplicationConfigurationService {

     private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(RiceApplicationConfigurationServiceImpl.class);

     protected List<Component> components = new ArrayList<Component>();

     protected List<String> packagePrefixes = new ArrayList<String>();

     private ConfigurationService kualiConfigurationService;

     private KualiModuleService kualiModuleService;

     private DataDictionaryService dataDictionaryService;

     public String getConfigurationParameter( String parameterName ){

             return getKualiConfigurationService().getPropertyString(parameterName);

     }

     /**

      * This method derived ParameterDetailedTypes from the DataDictionary for all BusinessObjects and Documents and from Spring for

      * all batch Steps.

      * 

      * @return List<ParameterDetailedType> containing the detailed types derived from the data dictionary and Spring

      */

     public List<Component> getNonDatabaseComponents() {

         if (components.isEmpty()) {

             Map<String, Component> uniqueParameterDetailTypeMap = new HashMap<String, Component>();

             DataDictionaryService dataDictionaryService = KNSServiceLocatorWeb.getDataDictionaryService();

             //dataDictionaryService.getDataDictionary().forceCompleteDataDictionaryLoad();

             for (BusinessObjectEntry businessObjectEntry : dataDictionaryService.getDataDictionary().getBusinessObjectEntries().values()) {

                 try {

                     Component parameterDetailType = getParameterDetailType((businessObjectEntry.getBaseBusinessObjectClass() != null) ? businessObjectEntry.getBaseBusinessObjectClass() : businessObjectEntry.getBusinessObjectClass());

                     uniqueParameterDetailTypeMap.put(parameterDetailType.getCode(), parameterDetailType);

                 }

                 catch (Exception e) {

                     LOG.error("The getDataDictionaryAndSpringComponents method of ParameterUtils encountered an exception while trying to create the detail type for business object class: " + businessObjectEntry.getBusinessObjectClass(), e);

                 }

             }

             for (DocumentEntry documentEntry : dataDictionaryService.getDataDictionary().getDocumentEntries().values()) {

                 if (documentEntry instanceof TransactionalDocumentEntry) {

                     try {

                         Component parameterDetailType = getParameterDetailType((documentEntry.getBaseDocumentClass() != null) ? documentEntry.getBaseDocumentClass() : documentEntry.getDocumentClass());

                         uniqueParameterDetailTypeMap.put(parameterDetailType.getCode(), parameterDetailType);

                     }

                     catch (Exception e) {

                         LOG.error("The getNonDatabaseDetailTypes encountered an exception while trying to create the detail type for transactional document class: " +

                                         ((documentEntry.getBaseDocumentClass() != null) ? documentEntry.getBaseDocumentClass() : documentEntry.getDocumentClass()), e);

                     }

                 }

             }

             components.addAll(uniqueParameterDetailTypeMap.values());

         }

         return Collections.unmodifiableList(components);

     }

     @SuppressWarnings("unchecked")

         protected Component getParameterDetailType(Class documentOrStepClass) {

         String detailTypeString = getKualiModuleService().getComponentCode(documentOrStepClass);

         String detailTypeName = getDetailTypeName(documentOrStepClass);

         String namespace = getKualiModuleService().getNamespaceCode(documentOrStepClass);

         String name = (detailTypeName == null) ? detailTypeString : detailTypeName;

         Component.Builder detailType = Component.Builder.create(namespace, detailTypeName, name, false);

         return detailType.build();

     }

     @SuppressWarnings("unchecked")

     /**

      * This method derived ParameterDetailedTypes from the DataDictionary for all BusinessObjects and Transactional Documents Entries and from Spring for

      * all batch Steps.

      * 

      * @return String containing the detailed type name derived from the data dictionary/Business Object

      */

         protected String getDetailTypeName(Class documentOrStepClass) {

         if (documentOrStepClass == null) {

             throw new IllegalArgumentException("The getDetailTypeName method of ParameterRepositoryServiceImpl requires non-null documentOrStepClass");

         }

         /* 

          * Some business objects have a Component annotation that sets the value

          * of the classes annotaion.  This if block will test to see if it is there, try to get the 

          * component value from the Data Dictionary if the BusinessObjectEntry exists, if it doesn't

          * exist, it will fall back to the annotation's value.

          */

         if (documentOrStepClass.isAnnotationPresent(COMPONENT.class)) {

             BusinessObjectEntry boe = getDataDictionaryService().getDataDictionary().getBusinessObjectEntry(documentOrStepClass.getName());

             if (boe != null) {

                 return boe.getObjectLabel();

             }

             else {

                 return ((COMPONENT) documentOrStepClass.getAnnotation(COMPONENT.class)).component();

             }

         }

         /*

          * If block that determines if the class is either a BusinessObject or a TransactionalDocument

          * return calls try to either get the BusinessObjectEntry's ObjectLable, or grabbing the 

          * data dictionary's BusinessTitleForClass if it is a BusinessObject, or the DocumentLabel if it is a

          * TransactionalDocument

          */

         if (TransactionalDocument.class.isAssignableFrom(documentOrStepClass)) {

             return getDataDictionaryService().getDocumentLabelByClass(documentOrStepClass);

         }

         else if (BusinessObject.class.isAssignableFrom(documentOrStepClass) ) {

             BusinessObjectEntry boe = getDataDictionaryService().getDataDictionary().getBusinessObjectEntry(documentOrStepClass.getName());

             if (boe != null) {

                 return boe.getObjectLabel();

             }

             else {

                 return KNSUtils.getBusinessTitleForClass(documentOrStepClass);

             }

         }

         throw new IllegalArgumentException("The getDetailTypeName method of ParameterRepositoryServiceImpl requires TransactionalDocument, BusinessObject, or Step class. Was: " + documentOrStepClass.getName() );

     }

     protected ConfigurationService getKualiConfigurationService() {

                 if (kualiConfigurationService == null) {

                         kualiConfigurationService = KNSServiceLocator.getKualiConfigurationService();

                 }

                 return kualiConfigurationService;

         }

     protected KualiModuleService getKualiModuleService() {

             if (kualiModuleService == null) {

                     kualiModuleService = KNSServiceLocatorWeb.getKualiModuleService();

             }

             return kualiModuleService;

     }

     protected DataDictionaryService getDataDictionaryService() {

             if (dataDictionaryService == null) {

                     dataDictionaryService = KNSServiceLocatorWeb.getDataDictionaryService();

             }

             return dataDictionaryService;

     }

         /**

          * @see org.kuali.rice.kns.service.RiceApplicationConfigurationService#getBaseInquiryUrl(java.lang.String)

          */

         public String getBaseInquiryUrl(String businessObjectClassName) {

                 return LookupUtils.getBaseInquiryUrl();

         }

         /**

          * @see org.kuali.rice.kns.service.RiceApplicationConfigurationService#getBaseLookupUrl(java.lang.String)

          */

         public String getBaseLookupUrl(String businessObjectClassName) {

                 // all Rice applications share the same type of lookup URL

                 return LookupUtils.getBaseLookupUrl(false);

         }

         public String getBaseHelpUrl(String businessObjectClassName) {

                 return KNSServiceLocator.getKualiConfigurationService().getPropertyString(KNSConstants.APPLICATION_URL_KEY) + "/kr/help.do";

         }

         /**

          * @see org.kuali.rice.kns.service.RiceApplicationConfigurationService#isResponsibleForPackage(java.lang.String)

          */

         public boolean isResponsibleForPackage(String packageName) {

                 if ( LOG.isDebugEnabled() ) {

                         LOG.debug( "Checking if application ("+packagePrefixes+") is responsible for package: " + packageName );

                 }

                 for ( String prefix : packagePrefixes ) {

                         if ( packageName.startsWith(prefix) ) {

                                 if ( LOG.isDebugEnabled() ) {

                                         LOG.debug("Found match ("+prefix+") - returning true");

                                 }

                                 return true;

                         }

                 }

                 if ( LOG.isDebugEnabled() ) {

                         LOG.debug("No Match Found: packageName="+packageName+" / prefix list=" + packagePrefixes);

                 }

                 return false;

         }

         /**

          * @see org.kuali.rice.kns.service.RiceApplicationConfigurationService#supportsBusinessObjectClass(java.lang.String)

          */

         public boolean supportsBusinessObjectClass(String businessObjectClassName) {

                 return getDataDictionaryService().getDataDictionary().getBusinessObjectEntry(businessObjectClassName) != null;

         }

         /**

          * @see org.kuali.rice.kns.service.RiceApplicationConfigurationService#getBusinessObjectAttributeDefinition(java.lang.String, java.lang.String)

          */

         public AttributeDefinition getBusinessObjectAttributeDefinition( String businessObjectClassName, String attributeName) {

                 if ( LOG.isDebugEnabled() ) {

                         LOG.debug( "Asking ("+packagePrefixes+") for BO AttributeDefinition: " + businessObjectClassName + " / " + attributeName );

                 }

                 BusinessObjectEntry boe = getDataDictionaryService().getDataDictionary().getBusinessObjectEntry(businessObjectClassName);

                 if ( boe == null ) {

                         if ( LOG.isInfoEnabled() ) {

                                 LOG.info( "No BusinessObjectEntry found for class name: " + businessObjectClassName );

                         }

                         return null;

                 }

                 return boe.getAttributeDefinition(attributeName);

         }

         /**

          * @return the packagePrefixes

          */

         public List<String> getPackagePrefixes() {

                 return this.packagePrefixes;

         }

         /**

          * @param packagePrefixes the packagePrefixes to set

          */

         public void setPackagePrefixes(List<String> packagePrefixes) {

                 this.packagePrefixes = packagePrefixes;

         }

 }