/*
    * 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.ksb.messaging.quartz;
  
  import org.kuali.rice.core.api.config.property.ConfigContext;
  import org.kuali.rice.ksb.util.KSBConstants;
  import org.springframework.beans.factory.config.AbstractFactoryBean;
  
  import java.util.Properties;
  
  /**
   * A factory bean which reads quartz-related properties from the Config system and
   * generates a Properites instance for use when configuration quartz.
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public class QuartzConfigPropertiesFactoryBean extends AbstractFactoryBean {
  
      private static final String QUARTZ_PREFIX = "ksb.org.quartz";
      private static final String QUARTZ_IS_CLUSTERED = QUARTZ_PREFIX + ".jobStore.isClustered";
      private static final String QUARTZ_TABLE_PREFIX = QUARTZ_PREFIX + ".jobStore.tablePrefix";
      
      @Override
      protected Object createInstance() throws Exception {
  	Properties properties = new Properties();
  	Properties configProps = ConfigContext.getCurrentContextConfig().getProperties();
  	boolean useQuartzDatabase = Boolean.valueOf(ConfigContext.getCurrentContextConfig().getProperty(KSBConstants.Config.USE_QUARTZ_DATABASE));
  	for (Object keyObj : configProps.keySet()) {
  	    if (keyObj instanceof String) {
  	    	String key = (String)keyObj;
  	    	if (key.startsWith(QUARTZ_PREFIX) && !propertyShouldBeFiltered(useQuartzDatabase, key)) {
  	    		properties.put(key.substring(4), configProps.get(key));
  	    	}
  	    }
  	}
  	return properties;
      }
      
      /**
       * When we aren't using the quartz database, prevents some of the parameters for quartz database mode from
       * being passed to quartz.  If we pass these to quartz when it's using a RAMJobStore, we get an error.  So
       * in order to allow us to provide good defaults in common-config-defaults.xml, we will filter these out
       * if useQuartzDatabase=false
       */
      protected boolean propertyShouldBeFiltered(boolean useQuartzDatabase, String propertyName) {
      	if (!useQuartzDatabase) {
      		if (propertyName.startsWith(QUARTZ_TABLE_PREFIX) || propertyName.startsWith(QUARTZ_IS_CLUSTERED)) {
      			return true;
      		}
      	}
      	return false;
      }
      
      
      @Override
      public Class getObjectType() {
  	return Properties.class;
      }
  
  }