/*
 *    Licensed to the Apache Software Foundation (ASF) under one
 *    or more contributor license agreements.  See the NOTICE file
 *    distributed with this work for additional information
 *    regarding copyright ownership.  The ASF licenses this file
 *    to you under the Apache License, Version 2.0 (the
 *    "License"); you may not use this file except in compliance
 *    with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing,
 *    software distributed under the License is distributed on an
 *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *    KIND, either express or implied.  See the License for the
 *    specific language governing permissions and limitations
 *    under the License.
 */
package org.apache.cayenne.modeler.action;

import org.apache.cayenne.configuration.ConfigurationNode;
import org.apache.cayenne.configuration.DataChannelDescriptor;
import org.apache.cayenne.dbsync.filter.NamePatternMatcher;
import org.apache.cayenne.dbsync.merge.context.EntityMergeSupport;
import org.apache.cayenne.dbsync.naming.DefaultObjectNameGenerator;
import org.apache.cayenne.dbsync.naming.NameBuilder;
import org.apache.cayenne.dbsync.naming.NoStemStemmer;
import org.apache.cayenne.map.DataMap;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.map.ObjEntity;
import org.apache.cayenne.map.event.EntityEvent;
import org.apache.cayenne.map.event.MapEvent;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.event.EntityDisplayEvent;
import org.apache.cayenne.modeler.undo.CreateObjEntityUndoableEdit;
import org.apache.cayenne.modeler.util.CayenneAction;
import org.apache.cayenne.util.DeleteRuleUpdater;

import java.awt.event.ActionEvent;

public class CreateObjEntityAction extends CayenneAction {

    /**
     * Constructor for CreateObjEntityAction.
     */
    public CreateObjEntityAction(Application application) {
        super(getActionName(), application);
    }

    public static String getActionName() {
        return "Create ObjEntity";
    }


    static void fireObjEntityEvent(
            Object src,
            ProjectController mediator,
            DataMap dataMap,
            ObjEntity entity) {
        mediator.fireObjEntityEvent(new EntityEvent(src, entity, MapEvent.ADD));
        EntityDisplayEvent displayEvent = new EntityDisplayEvent(
                src,
                entity,
                dataMap,
                mediator.getCurrentDataNode(),
                (DataChannelDescriptor) mediator.getProject().getRootNode());
        displayEvent.setMainTabFocus(true);
        mediator.fireObjEntityDisplayEvent(displayEvent);
    }

    @Override
    public String getIconName() {
        return "icon-new_objentity.png";
    }

    @Override
    public void performAction(ActionEvent e) {
        createObjEntity();
    }

    protected void createObjEntity() {
        ProjectController mediator = getProjectController();

        DataMap dataMap = mediator.getCurrentDataMap();
        ObjEntity entity = new ObjEntity();
        entity.setName(NameBuilder.builder(entity, dataMap).name());

        // init defaults
        entity.setSuperClassName(dataMap.getDefaultSuperclass());
        entity.setDeclaredLockType(dataMap.getDefaultLockType());

        DbEntity dbEntity = mediator.getCurrentDbEntity();
        if (dbEntity != null) {
            entity.setDbEntity(dbEntity);

            // TODO: use injectable name generator
            String baseName = new DefaultObjectNameGenerator(NoStemStemmer.getInstance()).objEntityName(dbEntity);
            entity.setName(NameBuilder
                    .builder(entity, dbEntity.getDataMap())
                    .baseName(baseName)
                    .name());
        }

        entity.setClassName(dataMap.getNameWithDefaultPackage(entity.getName()));

        if (dataMap.isClientSupported()) {
            entity.setClientClassName(dataMap.getNameWithDefaultClientPackage(entity.getName()));
            entity.setClientSuperClassName(dataMap.getDefaultClientSuperclass());
        }

        dataMap.addObjEntity(entity);

        // TODO: Modeler-controlled defaults for all the hardcoded boolean flags here.
        EntityMergeSupport merger = new EntityMergeSupport(new DefaultObjectNameGenerator(NoStemStemmer.getInstance()),
                NamePatternMatcher.EXCLUDE_ALL, true, true, false);
        merger.setNameGenerator(new DbEntitySyncAction.PreserveRelationshipNameGenerator());
        merger.addEntityMergeListener(DeleteRuleUpdater.getEntityMergeListener());
        merger.synchronizeWithDbEntity(entity);

        fireObjEntityEvent(this, mediator, dataMap, entity);

        application.getUndoManager().addEdit(new CreateObjEntityUndoableEdit(dataMap, entity));
    }

    public void createObjEntity(DataMap dataMap, ObjEntity entity) {
        ProjectController mediator = getProjectController();
        dataMap.addObjEntity(entity);
        fireObjEntityEvent(this, mediator, dataMap, entity);
    }

    /**
     * Returns <code>true</code> if path contains a DataMap object.
     */
    @Override
    public boolean enableForPath(ConfigurationNode object) {
        if (object == null) {
            return false;
        }

        if (object instanceof ObjEntity) {
            return ((ObjEntity) object).getParent() != null
                    && ((ObjEntity) object).getParent() instanceof DataMap;
        }

        return false;
    }
}