/*

  * Copyright 2007-2008 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.krad.service.impl;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.core.web.format.Formatter;

 import org.kuali.rice.kim.bo.Person;

 import org.kuali.rice.kns.document.authorization.BusinessObjectRestrictions;

 import org.kuali.rice.kns.document.authorization.FieldRestriction;

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

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

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

 import org.kuali.rice.krad.datadictionary.InactivationBlockingMetadata;

 import org.kuali.rice.krad.datadictionary.mask.MaskFormatter;

 import org.kuali.rice.krad.service.*;

 import org.kuali.rice.krad.util.GlobalVariables;

 import org.kuali.rice.krad.util.ObjectUtils;

 /**

  * This is a description of what this class does - wliang don't forget to fill this in.

  *

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

  *

  */

 public class InactivationBlockingDisplayServiceImpl implements InactivationBlockingDisplayService {

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

         private PersistenceService persistenceService;

         private DataDictionaryService dataDictionaryService;

         private PersistenceStructureService persistenceStructureService;

         private BusinessObjectAuthorizationService businessObjectAuthorizationService;

         /**

          * This overridden method ...

          *

          * @see org.kuali.rice.krad.service.InactivationBlockingDisplayService#listAllBlockerRecords(org.kuali.rice.krad.bo.BusinessObject, org.kuali.rice.krad.datadictionary.InactivationBlockingMetadata)

          */

         public List<String> listAllBlockerRecords(BusinessObject blockedBo, InactivationBlockingMetadata inactivationBlockingMetadata) {

         String inactivationBlockingDetectionServiceBeanName = inactivationBlockingMetadata.getInactivationBlockingDetectionServiceBeanName();

         if (StringUtils.isBlank(inactivationBlockingDetectionServiceBeanName)) {

             inactivationBlockingDetectionServiceBeanName = KRADServiceLocatorWeb.DEFAULT_INACTIVATION_BLOCKING_DETECTION_SERVICE;

         }

         InactivationBlockingDetectionService inactivationBlockingDetectionService = KRADServiceLocatorWeb

                 .getInactivationBlockingDetectionService(inactivationBlockingDetectionServiceBeanName);

         Collection<BusinessObject> collection = inactivationBlockingDetectionService.listAllBlockerRecords(blockedBo, inactivationBlockingMetadata);

         Map<String, Formatter> formatters = getFormattersForPrimaryKeyFields(inactivationBlockingMetadata.getBlockingReferenceBusinessObjectClass());

         List<String> displayValues = new ArrayList<String>();

         List<String> pkFieldNames = persistenceStructureService.listPrimaryKeyFieldNames(inactivationBlockingMetadata.getBlockingReferenceBusinessObjectClass());

         Person user = GlobalVariables.getUserSession().getPerson();

         for (BusinessObject element : collection) {

                 StringBuilder buf = new StringBuilder();

                 // the following method will return a restriction for all DD-defined attributes

                 BusinessObjectRestrictions businessObjectRestrictions = getBusinessObjectAuthorizationService().getLookupResultRestrictions(element, user);

                 for (int i = 0; i < pkFieldNames.size(); i++) {

                         String pkFieldName = pkFieldNames.get(i);

                         Object value = ObjectUtils.getPropertyValue(element, pkFieldName);

                         String displayValue = null;

                         if (!businessObjectRestrictions.hasRestriction(pkFieldName)) {

                                 Formatter formatter = formatters.get(pkFieldName);

                                 if (formatter != null) {

                                         displayValue = (String) formatter.format(value);

                                 }

                                 else {

                                         displayValue = String.valueOf(value);

                                 }

                         }

                         else {

                                 FieldRestriction fieldRestriction = businessObjectRestrictions.getFieldRestriction(pkFieldName);

                                 if (fieldRestriction.isMasked() || fieldRestriction.isPartiallyMasked()) {

                                             MaskFormatter maskFormatter = fieldRestriction.getMaskFormatter();

                                                 displayValue = maskFormatter.maskValue(value);

                                 }

                                 else {

                                         // there was a restriction, but we did not know how to obey it.

                                         LOG.warn("Restriction was defined for class: " + element.getClass() + " field name: " + pkFieldName + ", but it was not honored by the inactivation blocking display framework");

                                 }

                         }

                         buf.append(displayValue);

                         if (i < pkFieldNames.size() - 1) {

                                 buf.append(" - ");

                         }

                 }

                 displayValues.add(buf.toString());

         }

                 return displayValues;

         }

         protected Map<String, Formatter> getFormattersForPrimaryKeyFields(Class boClass) {

                 List<String> keyNames = persistenceStructureService.listPrimaryKeyFieldNames(boClass);

                 Map<String, Formatter> formattersForPrimaryKeyFields = new HashMap<String, Formatter>();

                 for (String pkFieldName : keyNames) {

                         Formatter formatter = null;

                         Class<? extends Formatter> formatterClass = dataDictionaryService.getAttributeFormatter(boClass, pkFieldName);

                         if (formatterClass != null) {

                                 try {

                                         formatter = formatterClass.newInstance();

                                 } catch (Exception e) {

                                         e.printStackTrace();

                                 }

                         }

         }

                 return formattersForPrimaryKeyFields;

         }

         public void setPersistenceService(PersistenceService persistenceService) {

                 this.persistenceService = persistenceService;

         }

         public void setPersistenceStructureService(

                         PersistenceStructureService persistenceStructureService) {

                 this.persistenceStructureService = persistenceStructureService;

         }

         public void setDataDictionaryService(DataDictionaryService dataDictionaryService) {

                 this.dataDictionaryService = dataDictionaryService;

         }

         protected BusinessObjectAuthorizationService getBusinessObjectAuthorizationService() {

                 if (businessObjectAuthorizationService == null) {

                         businessObjectAuthorizationService = KNSServiceLocator.getBusinessObjectAuthorizationService();

                 }

                 return businessObjectAuthorizationService;

         }

 }