/**
    * Copyright 2004-2014 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.kpme.tklm.leave.workflow.krms;
  
  
  import org.kuali.kpme.core.KPMENamespace;
  import org.kuali.kpme.core.api.assignment.Assignable;
  import org.kuali.kpme.core.krms.KPMERulesEngineExecuter;
  import org.kuali.kpme.core.krms.KpmeKrmsFactBuilderService;
  import org.kuali.kpme.core.service.HrServiceLocator;
  import org.kuali.kpme.tklm.common.krms.TklmKrmsConstants;
  import org.kuali.kpme.tklm.time.service.TkServiceLocator;
  import org.kuali.kpme.tklm.time.timesheet.TimesheetDocument;
  import org.kuali.rice.kew.api.exception.WorkflowException;
  import org.kuali.rice.kew.engine.RouteContext;
  import org.kuali.rice.krad.document.Document;
  import org.kuali.rice.krad.maintenance.MaintenanceDocument;
  import org.kuali.rice.krad.service.KRADServiceLocator;
  import org.kuali.rice.krad.service.KRADServiceLocatorWeb;
  import org.kuali.rice.krms.api.engine.Engine;
  import org.kuali.rice.krms.api.engine.EngineResults;
  import org.kuali.rice.krms.api.engine.Facts;
  import org.kuali.rice.krms.api.engine.SelectionCriteria;
  
  import java.util.HashMap;
  import java.util.Map;
  
  public class LeaveMaintDocRulesEngineExecutor extends KPMERulesEngineExecuter {
  
      //assumes document's dataobject being routed implements AssignedToAssignment
      @Override
      protected EngineResults performExecute(RouteContext routeContext, Engine engine) {
          Map<String, String> contextQualifiers = new HashMap<String, String>();
          contextQualifiers.put("namespaceCode", KPMENamespace.KPME_LM.getNamespaceCode());
          contextQualifiers.put("name", TklmKrmsConstants.Context.LM_CONTEXT_NAME);
  
          // extract facts from routeContext
          String docContent = routeContext.getDocument().getDocContent();
  
          SelectionCriteria selectionCriteria = SelectionCriteria.createCriteria(null, contextQualifiers,
                  new HashMap<String, String>());
  
          //Get timesheet document to create facts
          String documentId = routeContext.getDocument().getDocumentId();
          Object dataObject = null;
          MaintenanceDocument document = null;
          try {
              document = (MaintenanceDocument) KRADServiceLocatorWeb.getDocumentService().getByDocumentHeaderId(documentId);
              if (document.getNewMaintainableObject().getDataObject() != null
                      && document.getNewMaintainableObject().getDataObject() instanceof Assignable) {
                  dataObject = document.getNewMaintainableObject().getDataObject();
              }
          } catch (WorkflowException e) {
              e.printStackTrace();
          }
  
          KpmeKrmsFactBuilderService fbService = HrServiceLocator.getService("lmFactBuilderService");
          Facts.Builder factsBuilder = Facts.Builder.create();
          //factsBuilder.addFact()
          fbService.addFacts(factsBuilder, dataObject, TklmKrmsConstants.Context.LM_CONTEXT_NAME, KPMENamespace.KPME_LM.getNamespaceCode());
          EngineResults results = engine.execute(selectionCriteria, factsBuilder.build(), null);
          return results;
      }
  }