package pt.ist.fenixframework.plugins;

import java.net.URL;
import java.util.Collections;
import java.util.List;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;

import org.apache.log4j.Logger;

import pt.ist.fenixWebFramework.services.Service;
import pt.ist.fenixframework.FenixFrameworkPlugin;
import pt.ist.fenixframework.plugins.luceneIndexing.IndexListener;
import pt.ist.fenixframework.plugins.luceneIndexing.domain.LuceneSearchPluginRoot;
import pt.ist.fenixframework.pstm.TopLevelTransaction;

@WebListener
public class LuceneSearchPlugin implements FenixFrameworkPlugin, ServletContextListener {
    public static final Logger LOGGER = Logger.getLogger(LuceneSearchPlugin.class.getName());
    private static boolean initialized = false;

    @Override
    public List<URL> getDomainModel() {
        URL resource = getClass().getResource("/luceneSearch-plugin.dml");
        return Collections.singletonList(resource);
    }

    @Override
    @Service
    public void initialize() {
        if (!initialized) {
            LuceneSearchPluginRoot.getInstance();
            TopLevelTransaction.addCommitListener(new IndexListener());
            initialized = true;
        }
    }

    @Override
    public void contextInitialized(ServletContextEvent event) {
        initialize();
    }

    @Override
    public void contextDestroyed(ServletContextEvent event) {
    }
}