/**
    * 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.kew.engine;
  
  import org.kuali.rice.coreservice.framework.CoreFrameworkServiceLocator;
  import org.kuali.rice.coreservice.framework.parameter.ParameterService;
  import org.kuali.rice.kew.engine.node.service.RouteNodeService;
  import org.kuali.rice.kew.engine.simulation.SimulationEngine;
  import org.kuali.rice.kew.routeheader.service.RouteHeaderService;
  import org.springframework.beans.factory.InitializingBean;
  
  /**
   * An implementation of the {@link WorkflowEngineFactory}. 
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class WorkflowEngineFactoryImpl implements WorkflowEngineFactory, InitializingBean {
  
      private RouteNodeService routeNodeService;
      private RouteHeaderService routeHeaderService;
      private ParameterService parameterService;
      
      
      /**
       * Ensures that all dependencies were injected into this factory.
       * 
       * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
       * @throws IllegalStateException if any of the required services are null
       */
      @Override
      public void afterPropertiesSet() {
          if (routeNodeService == null) {
              throw new IllegalStateException("routeNodeService not properly injected, was null.");
          }
          if (routeHeaderService == null) {
              throw new IllegalStateException("routeHeaderService not properly injected, was null.");
          }
          //if (parameterService == null) {
          //    throw new IllegalStateException("parameterService not properly injected, was null.");
          //}
      }
      
      /**
       * @see org.kuali.rice.kew.engine.WorkflowEngineFactory#newEngine(org.kuali.rice.kew.engine.OrchestrationConfig)
       */
      @SuppressWarnings("unchecked")
      @Override
      public <E extends WorkflowEngine> E newEngine(OrchestrationConfig config) {
          switch (config.getCapability()) {
              case STANDARD:
                  return (E) new StandardWorkflowEngine(routeNodeService, routeHeaderService, parameterService, config);
              case BLANKET_APPROVAL:
                  return (E) new BlanketApproveEngine(routeNodeService, routeHeaderService, parameterService, config);
              case SIMULATION:
                  return (E) new SimulationEngine(routeNodeService, routeHeaderService, parameterService, config);
          }
          
          return null;
      }
      
      /**
       * @return the routeNodeService
       */
      public RouteNodeService getRouteNodeService() {
          return this.routeNodeService;
      }
  
  
      /**
       * @param routeNodeService the routeNodeService to set
       */
      public void setRouteNodeService(RouteNodeService routeNodeService) {
          this.routeNodeService = routeNodeService;
      }
  
  
      /**
       * @return the routeHeaderService
       */
      public RouteHeaderService getRouteHeaderService() {
          return this.routeHeaderService;
      }
  
  
      /**
       * @param routeHeaderService the routeHeaderService to set
      */
     public void setRouteHeaderService(RouteHeaderService routeHeaderService) {
         this.routeHeaderService = routeHeaderService;
     }
 
 
     /**
      * @return the parameterService
      */
     public ParameterService getParameterService() {
         if (this.parameterService == null) {
             this.parameterService = CoreFrameworkServiceLocator.getParameterService();
         }
         return this.parameterService;
     }
 
 
     /**
      * @param parameterService the parameterService to set
      */
     public void setParameterService(ParameterService parameterService) {
         this.parameterService = parameterService;
     }
 
 }