/* ===================================================================
 * AppContextInitializer.java
 * 
 * Created Feb 28, 2005 8:54:00 PM
 * 
 * Copyright (c) 2005 Matt Magoffin (spamsqr@msqr.us)
 * 
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License as 
 * published by the Free Software Foundation; either version 2 of 
 * the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License 
 * along with this program; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 
 * 02111-1307 USA
 * ===================================================================
 * $Id: AppContextInitializer.java 74 2009-05-15 04:44:37Z msqr $
 * ===================================================================
 */

package magoffin.matt.ieat.test;

import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;

import magoffin.matt.ieat.biz.DomainObjectFactory;
import magoffin.matt.ieat.web.WebConstants;
import magoffin.matt.util.StringUtil;
import magoffin.matt.xweb.XAppContext;
import magoffin.matt.xweb.XwebParameter;
import magoffin.matt.xweb.util.AppContextSupport;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.core.io.Resource;

/**
 * Class to initialize the iEat AppContext data.
 * 
 * <p>The configurable properties of this class are:</p>
 * 
 * <dl>
 *   <dt>domainObjectFactory</dt>
 *   <dd>The DomainObjectFactory to use for creating domain objects.</dd>
 * 
 *   <dt>environment</dt>
 *   <dd>The property file resource containing all application properties.</dd>
 * </dl>
 * 
 * @author Matt Magoffin (spamsqr@msqr.us)
 * @version $Revision: 74 $ $Date: 2009-05-15 16:44:37 +1200 (Fri, 15 May 2009) $
 */
public class AppContextInitializer  implements ApplicationContextAware {
	
	private final Log logger = LogFactory.getLog(getClass());
	
	/** DomainObjectFactory for creating our domain objects. */
	private DomainObjectFactory domainObjectFactory = null;
	
	/** The environment property file to make available via the AppContext object. */
	private Resource environment = null;
	
	/* Internal fields. */
	
	private AppContextSupport appContextSupport = null;

	/* (non-Javadoc)
	 * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)
	 */
	@SuppressWarnings("unchecked")
	public void setApplicationContext(ApplicationContext applicationContext)
			throws BeansException {
		XAppContext appCtx = domainObjectFactory.newXAppContextInstance();		
		Properties props = new Properties();
		try{
			props.load(environment.getInputStream());
		} catch ( IOException e ) {
			throw new RuntimeException("Unable to load environment properties",e);
		}
		
		for ( Iterator itr = props.entrySet().iterator(); itr.hasNext(); ) {
			Map.Entry me = (Map.Entry)itr.next();
			String value = StringUtil.trimToNull((String)me.getValue());
			if ( value != null ) {
				XwebParameter param = domainObjectFactory.newXwebParameterInstance();
				param.setKey(me.getKey().toString());
				param.setValue(value);
				appCtx.getParam().add(param);
			}
		}
		
		// cache the configuration in the servlet context
		
		AppContextSupport appCtxSupport = new AppContextSupport(appCtx);

		if ( logger.isDebugEnabled() ) {
			logger.debug("Storing AppContext [" +appCtx +"] with " +props.size() 
					+" properties in the servlet context at ["
					+WebConstants.APP_KEY_APP_CONTEXT +"]");
		}
		
		this.appContextSupport = appCtxSupport;
	}
	
	/**
	 * @return Returns the appContextSupport.
	 */
	public AppContextSupport getAppContextSupport() {
		return appContextSupport;
	}
	
	/**
	 * @return the domainObjectFactory
	 */
	public DomainObjectFactory getDomainObjectFactory() {
		return domainObjectFactory;
	}
	
	/**
	 * @param domainObjectFactory the domainObjectFactory to set
	 */
	public void setDomainObjectFactory(DomainObjectFactory domainObjectFactory) {
		this.domainObjectFactory = domainObjectFactory;
	}
	
	/**
	 * @return the environment
	 */
	public Resource getEnvironment() {
		return environment;
	}
	
	/**
	 * @param environment the environment to set
	 */
	public void setEnvironment(Resource environment) {
		this.environment = environment;
	}

}