/*******************************************************************************
 * Copyright 2014 Federal Chancellery Austria
 * MOA-ID has been developed in a cooperation between BRZ, the Federal
 * Chancellery Austria - ICT staff unit, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 *******************************************************************************/
package at.gv.egovernment.moa.id.config.auth;

import java.util.Date;

import at.gv.egovernment.moa.id.commons.db.ConfigurationDBRead;
import at.gv.egovernment.moa.id.commons.db.ConfigurationDBUtils;
import at.gv.egovernment.moa.id.commons.db.dao.config.MOAIDConfiguration;
import at.gv.egovernment.moa.id.protocols.pvp2x.metadata.MOAMetadataProvider;
import at.gv.egovernment.moa.logging.Logger;


public class AuthConfigLoader implements Runnable {

	private static final long INTERVAL = 60; // 60 sec
	
	public void run() {
		while (true) {
			try {
				Thread.sleep(INTERVAL * 1000);
						
				Logger.info("check for new config.");
				MOAIDConfiguration moaidconfig = ConfigurationDBRead.getMOAIDConfiguration();
				
				if (moaidconfig != null) {									
					Date dbdate = moaidconfig.getTimestampItem();
					Date pvprefresh = moaidconfig.getPvp2RefreshItem();
	
					Date date = AuthConfigurationProvider.getTimeStamp();
				
					if (dbdate != null && dbdate.after(date)) {
						AuthConfigurationProvider instance = AuthConfigurationProvider.getInstance();
						instance.reloadDataBaseConfig();
					}
					
					Date pvpdate = MOAMetadataProvider.getTimeStamp();
					if (pvprefresh != null && pvpdate != null && pvprefresh.after(pvpdate)) {
						MOAMetadataProvider.reInitialize();
					}
					
				} else {
					Logger.warn("MOA-ID Configuration is actually not found. Reuse old configuration.");
					
				}
				
				
			} catch (Throwable e) {
				Logger.warn("MOA-ID Configuration is actually not loadable. Reuse old configuration.", e);
				
			} finally {
				ConfigurationDBUtils.closeSession();
				
			}
		}	
	}
	
	public static void start() {
		// start the session cleanup thread
		Thread configLoader = new Thread(new AuthConfigLoader());
		configLoader.setName("ConfigurationLoader");
		configLoader.setDaemon(true);
		configLoader.setPriority(Thread.MIN_PRIORITY);
		configLoader.start();
	}
}