/**
 * MailArchiver is an application that provides services for storing and managing e-mail messages through a Web Services SOAP interface.
 * Copyright (C) 2012  Marcio Andre Scholl Levien and Fernando Alberto Reuter Wendt and Jose Ronaldo Nogueira Fonseca Junior
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/******************************************************************************\
*
*  This product was developed by
*
*        SERVIÇO FEDERAL DE PROCESSAMENTO DE DADOS (SERPRO),
*
*  a government company established under Brazilian law (5.615/70),
*  at Department of Development of Porto Alegre.
*
\******************************************************************************/

package serpro.mailarchiver.domain;

import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import javax.jdo.InstanceCallbacks;
import javax.jdo.listener.AttachCallback;
import javax.jdo.listener.DetachCallback;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Configurable;
import org.springframework.orm.jdo.TransactionAwarePersistenceManagerFactoryProxy;

import com.vaadin.data.Item;
import com.vaadin.data.Property;
import com.vaadin.data.util.MethodProperty;
import com.vaadin.data.util.PropertysetItem;

import serpro.mailarchiver.util.Logger;
import serpro.mailarchiver.util.jdo.InstanceLifecycleListener;
import serpro.mailarchiver.util.jdo.PersistenceManager;
import serpro.mailarchiver.util.jdo.PersistenceManagerFactory;

@Configurable
public abstract class BaseObject
    implements InstanceCallbacks, AttachCallback, DetachCallback, Item
{
    private static final Logger log = Logger.getLocalLogger();

    @Autowired
    InstanceLifecycleListener lifecycleListener;

    @Autowired
    private TransactionAwarePersistenceManagerFactoryProxy pmfProxy;

    protected PersistenceManagerFactory getTargetPersistenceManagerFactory() {
        return (PersistenceManagerFactory) pmfProxy.getTargetPersistenceManagerFactory();
    }

    protected PersistenceManager getPersistenceManager() {
        return (PersistenceManager) pmfProxy.getObject().getPersistenceManager();
    }

    //
    // Vaadin Item interface
    //

    private Map<String, Property> propMap;

    public synchronized Property getProperty(String name) {
        return getItemProperty(name);
    }

    public PropertysetItem getPropertySet(String... names) {
        PropertysetItem propSet = new PropertysetItem();
        for(String name : names) {
            propSet.addItemProperty(name, getItemProperty(name));
        }
        return propSet;
    }

    @Override
    public synchronized Property getItemProperty(Object id) {
        String name = (String) id;
        if(propMap == null) {
            propMap = new HashMap<String, Property>();
        }
        if(propMap.containsKey(name)) {
            return propMap.get(name);
        }
        Property prop = new MethodProperty(this, name);
        propMap.put(name, prop);
        return prop;
    }

    @Override
    public synchronized Collection<?> getItemPropertyIds() {
        if(propMap == null) {
            propMap = new HashMap<String, Property>();
        }
        return Collections.unmodifiableSet(propMap.keySet());
    }

    @Override
    public boolean addItemProperty(Object id, Property property)
            throws UnsupportedOperationException {
        throw new UnsupportedOperationException("Not supported.");
    }

    @Override
    public boolean removeItemProperty(Object id)
            throws UnsupportedOperationException {
        throw new UnsupportedOperationException("Not supported.");
    }

    //
    //JDO InstanceCallbacks interface
    //

    @Override
    public void jdoPreClear() {
        lifecycleListener.jdoPreClear(this);
    }

    @Override
    public void jdoPreDelete() {
        lifecycleListener.jdoPreDelete(this);
    }

    @Override
    public void jdoPostLoad() {
        lifecycleListener.jdoPostLoad(this);
    }

    @Override
    public void jdoPreStore() {
        lifecycleListener.jdoPreStore(this);
    }

    //
    //JDO AttachCallbacks interface
    //

    @Override
    public void jdoPreAttach() {
        lifecycleListener.jdoPreAttach(this);
    }

    @Override
    public void jdoPostAttach(Object o) {
        lifecycleListener.jdoPostAttach(this, o);
    }

    //
    //JDO DetachCallbacks interface
    //

    @Override
    public void jdoPreDetach() {
        lifecycleListener.jdoPreDetach(this);
    }

    @Override
    public void jdoPostDetach(Object o) {
        lifecycleListener.jdoPostDetach(this, o);
    }
}