/*******************************************************************************
 * Copyright (C) 2013 JMaNGOS <http://jmangos.org/>
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 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 General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package org.jmangos.tools.wmo;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;

import org.jmangos.tools.chunk.BaseChunk;
import org.jmangos.tools.wmo.chunks.WMOChunk;
import org.jmangos.tools.wmo.chunks.group.MOGPChunk;

public class WmoGroup {

    public MOGPChunk groupChunk;

    public static WmoGroup read(final File f) throws IOException {

        FileInputStream fis = null;
        final ByteBuffer bb = ByteBuffer.allocate((int) f.length());
        final WmoGroup result = new WmoGroup();
        try {
            fis = new FileInputStream(f);
            fis.getChannel().read(bb);
            bb.rewind();
            bb.order(ByteOrder.LITTLE_ENDIAN);

            int glOffset = 0;
            while (glOffset < (int) f.length()) {
                final BaseChunk ch = new WMOChunk().readChunkByHeader(bb, glOffset);
                if (ch instanceof MOGPChunk) {
                    result.groupChunk = (MOGPChunk) ch;
                }
                glOffset = ch.getGlobalOffcet();
            }
        } catch (final FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            fis.close();
        }
        return result;
    }
}