/**
 * 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.util.jdo;

import javax.jdo.JDOHelper;
import javax.jdo.ObjectState;
import javax.jdo.listener.AttachLifecycleListener;
import javax.jdo.listener.ClearLifecycleListener;
import javax.jdo.listener.CreateLifecycleListener;
import javax.jdo.listener.DeleteLifecycleListener;
import javax.jdo.listener.DetachLifecycleListener;
import javax.jdo.listener.DirtyLifecycleListener;
import javax.jdo.listener.InstanceLifecycleEvent;
import javax.jdo.listener.LoadLifecycleListener;
import javax.jdo.listener.StoreLifecycleListener;

import com.google.common.base.Supplier;

import serpro.mailarchiver.domain.BaseObject;
import serpro.mailarchiver.util.Logger;

public class InstanceLifecycleListener
implements
    AttachLifecycleListener,
    ClearLifecycleListener,
    CreateLifecycleListener,
    DeleteLifecycleListener,
    DetachLifecycleListener,
    DirtyLifecycleListener,
    LoadLifecycleListener,
    StoreLifecycleListener
{
    private static final Logger log = Logger.getLocalLogger();

    private void logLifecycleEvent(final String method, final InstanceLifecycleEvent ile, final Object o1, final Object o2) {

        log.debug("%s", new Supplier<Object[]>() {
            @Override
            public Object[] get() {
                StringBuilder sb = new StringBuilder();

                sb.append(">>").append(method).append("<<\n\n");

                Object persistentInstance;
                Object detachedInstance;

                if(ile != null) {

                    persistentInstance = ile.getPersistentInstance();
                    detachedInstance = ile.getDetachedInstance();

                    sb.append("eventType: ");

                    switch(ile.getEventType()) {
                        case InstanceLifecycleEvent.CREATE:
                            sb.append("CREATE");
                            break;

                        case InstanceLifecycleEvent.LOAD:
                            sb.append("LOAD");
                            break;

                        case InstanceLifecycleEvent.STORE:
                            sb.append("STORE");
                            break;

                        case InstanceLifecycleEvent.CLEAR:
                            sb.append("CLEAR");
                            break;

                        case InstanceLifecycleEvent.DELETE:
                            sb.append("DELETE");
                            break;

                        case InstanceLifecycleEvent.DIRTY:
                            sb.append("DIRTY");
                            break;

                        case InstanceLifecycleEvent.DETACH:
                            sb.append("DETACH");
                            break;

                        case InstanceLifecycleEvent.ATTACH:
                            sb.append("ATTACH");
                            break;
                    }
                }
                else {
                    persistentInstance = o1;
                    detachedInstance = o2;
                }

                ObjectState objectState = JDOHelper.getObjectState(persistentInstance);
                sb.append("\nobjectState: ").append(objectState.toString());

                boolean isDeleted = JDOHelper.isDeleted(persistentInstance);
                sb.append("\nisDeleted: ").append(isDeleted);

                boolean isDetached = JDOHelper.isDetached(persistentInstance);
                sb.append("\nisDetached: ").append(isDetached);

                boolean isDirty = JDOHelper.isDirty(persistentInstance);
                sb.append("\nisDirty: ").append(isDirty);

                boolean isNew = JDOHelper.isNew(persistentInstance);
                sb.append("\nisNew: ").append(isNew);

                boolean isPersistent = JDOHelper.isPersistent(persistentInstance);
                sb.append("\nisPersistent: ").append(isPersistent);

                boolean isTransactional = JDOHelper.isTransactional(persistentInstance);
                sb.append("\nisTransactional: ").append(isTransactional);

                if(!isDeleted) {
                    sb.append("\n\npersistentInstance:\n").append(persistentInstance.toString());
                }

                if(detachedInstance != null) {
                    sb.append("\n\ndetachedInstance:\n").append(detachedInstance.toString());
                }

                return new Object[] { sb.toString() };
            }
        });
    }

    //
    // AttachLifecycleListener
    //

    @Override
    public void preAttach(InstanceLifecycleEvent ile) {
        logLifecycleEvent("preAttach", ile, null, null);
    }

    @Override
    public void postAttach(InstanceLifecycleEvent ile) {
        logLifecycleEvent("postAttach", ile, null, null);
    }

    //
    // ClearLifecycleListener
    //

    @Override
    public void preClear(InstanceLifecycleEvent ile) {
        logLifecycleEvent("preClear", ile, null, null);
    }

    @Override
    public void postClear(InstanceLifecycleEvent ile) {
        logLifecycleEvent("postClear", ile, null, null);
    }

    //
    // CreateLifecycleListener
    //

    @Override
    public void postCreate(InstanceLifecycleEvent ile) {
        logLifecycleEvent("postCreate", ile, null, null);
    }

    //
    // DeleteLifecycleListener
    //

    @Override
    public void preDelete(InstanceLifecycleEvent ile) {
        logLifecycleEvent("preDelete", ile, null, null);
    }

    @Override
    public void postDelete(InstanceLifecycleEvent ile) {
        logLifecycleEvent("postDelete", ile, null, null);
    }

    //
    // DetachLifecycleListener
    //

    @Override
    public void preDetach(InstanceLifecycleEvent ile) {
        logLifecycleEvent("preDetach", ile, null, null);
    }

    @Override
    public void postDetach(InstanceLifecycleEvent ile) {
        logLifecycleEvent("postDetach", ile, null, null);
    }

    //
    // DirtyLifecycleListener
    //

    @Override
    public void preDirty(InstanceLifecycleEvent ile) {
        logLifecycleEvent("preDirty", ile, null, null);
    }

    @Override
    public void postDirty(InstanceLifecycleEvent ile) {
        logLifecycleEvent("postDirty", ile, null, null);
    }

    //
    // LoadLifecycleListener
    //

    @Override
    public void postLoad(InstanceLifecycleEvent ile) {
        logLifecycleEvent("postLoad", ile, null, null);
    }

    //
    // StoreLifecycleListener
    //

    @Override
    public void preStore(InstanceLifecycleEvent ile) {
        logLifecycleEvent("preStore", ile, null, null);
    }

    @Override
    public void postStore(InstanceLifecycleEvent ile) {
        logLifecycleEvent("postStore", ile, null, null);
    }

    //
    // InstanceCallbacks
    //

    public void jdoPreClear(BaseObject o1) {
        logLifecycleEvent("jdoPreClear", null, o1, null);
    }

    public void jdoPreDelete(BaseObject o1) {
        logLifecycleEvent("jdoPreDelete", null, o1, null);
    }

    public void jdoPostLoad(BaseObject o1) {
        logLifecycleEvent("jdoPostLoad", null, o1, null);
    }

    public void jdoPreStore(BaseObject o1) {
        logLifecycleEvent("jdoPreStore", null, o1, null);
    }

    //
    // AttachCallbacks
    //

    public void jdoPreAttach(BaseObject o1) {
        logLifecycleEvent("jdoPreAttach", null, o1, null);
    }

    public void jdoPostAttach(BaseObject o1, Object o2) {
        logLifecycleEvent("jdoPostAttach", null, o1, o2);
    }

    //
    // DetachCallbacks
    //

    public void jdoPreDetach(BaseObject o1) {
        logLifecycleEvent("jdoPreDetach", null, o1, null);
    }

    public void jdoPostDetach(BaseObject o1, Object o2) {
        logLifecycleEvent("jdoPostDetach", null, o1, o2);
    }
}