/*******************************************************************************
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 *
 *******************************************************************************/
package com.liferay.ide.project.core.upgrade;

import com.liferay.ide.project.core.ProjectCore;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

import org.codehaus.jackson.map.ObjectMapper;
import org.eclipse.core.runtime.IPath;

/**
 * @author Lovett Li
 * @author Terry Jia
 */
public class UpgradeAssistantSettingsUtil
{
    private static final IPath storageLocation = ProjectCore.getDefault().getStateLocation();

    public static <T> T getObjectFromStore( Class<T> clazz ) throws IOException
    {
        final ObjectMapper mapper = new ObjectMapper();

        try
        {
            return mapper.readValue( storageLocation.append( clazz.getSimpleName() + ".json" ).toFile(), clazz );
        }
        catch( FileNotFoundException e )
        {
        }

        return null;
    }

    public static <T> void setObjectToStore( Class<T> clazz, T object ) throws IOException
    {
        final ObjectMapper mapper = new ObjectMapper();

        final File storageFile = storageLocation.append( clazz.getSimpleName() + ".json" ).toFile();

        mapper.writeValue( storageFile, object );
    }

}