/**
    * Copyright 2005-2016 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.krms.impl.util;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.uif.RemotableAttributeField;
  import org.kuali.rice.krad.uif.container.Container;
  import org.kuali.rice.krad.uif.view.View;
  import org.kuali.rice.krad.web.form.InquiryForm;
  import org.kuali.rice.krad.web.form.MaintenanceForm;
  import org.kuali.rice.krms.api.repository.type.KrmsTypeDefinition;
  import org.kuali.rice.krms.framework.type.ActionTypeService;
  import org.kuali.rice.krms.framework.type.AgendaTypeService;
  import org.kuali.rice.krms.framework.type.RuleTypeService;
  import org.kuali.rice.krms.impl.repository.KrmsRepositoryServiceLocator;
  import org.kuali.rice.krms.impl.type.ActionTypeServiceBase;
  import org.kuali.rice.krms.impl.type.AgendaTypeServiceBase;
  import org.kuali.rice.krms.impl.type.RuleTypeServiceBase;
  import org.kuali.rice.krms.impl.ui.AgendaEditor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * KRMS utilility class for retrieving KRMS objects for {@link org.kuali.rice.krms.impl.ui.AgendaEditorMaintainable} and
   * {@link org.kuali.rice.krms.impl.repository.AgendaInquiryHelperServiceImpl}
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class KrmsRetriever {
  
      private static final long serialVersionUID = 1L;
  
      /**
       * This only supports a single action within a rule.
       * @param agendaEditor
       * @return List<RemotableAttributeField>
       */
      public List<RemotableAttributeField> retrieveRuleActionCustomAttributes(AgendaEditor agendaEditor) {
          List<RemotableAttributeField> results = new ArrayList<RemotableAttributeField>();
          // if we have an rule action w/ a typeId set on it
          if (agendaEditor != null && agendaEditor.getAgendaItemLineRuleAction() != null
                  &&!StringUtils.isBlank(agendaEditor.getAgendaItemLineRuleAction().getTypeId())) {
              ActionTypeService actionTypeService = getActionTypeService(agendaEditor.getAgendaItemLineRuleAction().getTypeId());
              results.addAll(actionTypeService.getAttributeFields(agendaEditor.getAgendaItemLineRuleAction().getTypeId()));
          }
  
          return results;
      }
  
      /**
       * Get the AgendaEditor out of the MaintenanceForm's newMaintainableObject
       * @param model the MaintenanceForm
       * @return the AgendaEditor
       */
      private AgendaEditor getAgendaEditor(Object model) {
          MaintenanceForm maintenanceForm = (MaintenanceForm)model;
          return (AgendaEditor)maintenanceForm.getDocument().getNewMaintainableObject().getDataObject();
      }
  
      private ActionTypeService getActionTypeService(String krmsTypeId) {
          //
          // Get the ActionTypeService by hook or by crook
          //
  
          KrmsTypeDefinition krmsType = KrmsRepositoryServiceLocator.getKrmsTypeRepositoryService().getTypeById(krmsTypeId);
  
          ActionTypeService actionTypeService = null;
  
          if (!StringUtils.isBlank(krmsTypeId)) {
              String serviceName = krmsType.getServiceName();
  
              if (!StringUtils.isBlank(serviceName)) {
                  actionTypeService = KrmsRepositoryServiceLocator.getService(serviceName);
              }
          }
          if (actionTypeService == null) {
              actionTypeService = ActionTypeServiceBase.defaultActionTypeService;
          }
  
          //        if (actionTypeService == null) { actionTypeService = AgendaTypeServiceBase.defaultAgendaTypeService; }
  
          return actionTypeService;
      }
  
      /**
      *
      * @param agendaEditor
      * @return List<RemotableAttributeField>
      */
     public List<RemotableAttributeField> retrieveAgendaCustomAttributes(AgendaEditor agendaEditor) {
         List<RemotableAttributeField> results = new ArrayList<RemotableAttributeField>();
         // if we have an agenda w/ a typeId set on it
         if (agendaEditor != null && agendaEditor.getAgenda() != null
                 && !StringUtils.isBlank(agendaEditor.getAgenda().getTypeId())) {
 
             String krmsTypeId = agendaEditor.getAgenda().getTypeId();
 
             AgendaTypeService agendaTypeService = getAgendaTypeService(krmsTypeId);
             results.addAll(agendaTypeService.getAttributeFields(krmsTypeId));
         }
 
         return results;
     }
 
     private AgendaTypeService getAgendaTypeService(String krmsTypeId) {
         //
         // Get the AgendaTypeService by hook or by crook
         //
 
         KrmsTypeDefinition krmsType =
                 KrmsRepositoryServiceLocator.getKrmsTypeRepositoryService().
                         getTypeById(krmsTypeId);
 
         AgendaTypeService agendaTypeService = null;
 
         if (!StringUtils.isBlank(krmsTypeId)) {
             String serviceName = krmsType.getServiceName();
 
             if (!StringUtils.isBlank(serviceName)) {
                 agendaTypeService = KrmsRepositoryServiceLocator.getService(serviceName);
             }
         }
 
         if (agendaTypeService == null) { agendaTypeService = AgendaTypeServiceBase.defaultAgendaTypeService; }
 
         return agendaTypeService;
     }
 
     public List<RemotableAttributeField> retrieveRuleCustomAttributes(AgendaEditor agendaEditor) {
         List<RemotableAttributeField> results = new ArrayList<RemotableAttributeField>();
         // if we have an rule w/ a typeId set on it
         if (agendaEditor != null && agendaEditor.getAgendaItemLine() != null && agendaEditor.getAgendaItemLine().getRule() != null
                 && !StringUtils.isBlank(agendaEditor.getAgendaItemLine().getRule().getTypeId())) {
 
             String krmsTypeId = agendaEditor.getAgendaItemLine().getRule().getTypeId();
 
             RuleTypeService ruleTypeService = getRuleTypeService(krmsTypeId);
             results.addAll(ruleTypeService.getAttributeFields(krmsTypeId));
         }
 
         return results;
     }
 
 
     private RuleTypeService getRuleTypeService(String krmsTypeId) {
         RuleTypeService ruleTypeService = null;
         String serviceName = getRuleTypeServiceName(krmsTypeId);
 
         if (!StringUtils.isBlank(serviceName)) {
             ruleTypeService = KrmsRepositoryServiceLocator.getService(serviceName);
         }
         if (ruleTypeService == null) {
             ruleTypeService = RuleTypeServiceBase.defaultRuleTypeService;
         }
         return ruleTypeService;
     }
 
     private String getRuleTypeServiceName(String krmsTypeId) {
         String serviceName = null;
         KrmsTypeDefinition krmsType =
                 KrmsRepositoryServiceLocator.getKrmsTypeRepositoryService().
                         getTypeById(krmsTypeId);
 
         if (!StringUtils.isBlank(krmsTypeId)) {
             serviceName = krmsType.getServiceName();
         }
         return serviceName;
     }
 }