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/*
 * RED5 Open Source Media Server - https://github.com/Red5/
 * 
 * Copyright 2006-2016 by respective authors (see below). All rights reserved.
 * 
 * Licensed 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.red5.server.net.rtmp.event;

import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

import org.apache.mina.core.buffer.IoBuffer;
import org.red5.io.utils.HexDump;

/**
 * Unknown event
 */
public class Unknown extends BaseEvent {
    private static final long serialVersionUID = -1352770037962252975L;

    /**
     * Event data
     */
    protected IoBuffer data;

    /**
     * Type of data
     */
    protected byte dataType;

    public Unknown() {
    }

    /**
     * Create new unknown event with given data and data type
     * 
     * @param dataType
     *            Data type
     * @param data
     *            Event data
     */
    public Unknown(byte dataType, IoBuffer data) {
        super(Type.SYSTEM);
        this.dataType = dataType;
        this.data = data;
    }

    /** {@inheritDoc} */
    @Override
    public byte getDataType() {
        return dataType;
    }

    /**
     * Getter for data
     *
     * @return Data
     */
    public IoBuffer getData() {
        return data;
    }

    /** {@inheritDoc} */
    @Override
    public String toString() {
        final IoBuffer buf = getData();
        StringBuffer sb = new StringBuffer();
        sb.append("Size: ");
        sb.append(buf.remaining());
        sb.append(" Data:\n\n");
        sb.append(HexDump.formatHexDump(buf.getHexDump()));
        return sb.toString();
    }

    /** {@inheritDoc} */
    @Override
    protected void releaseInternal() {
        if (data != null) {
            data.free();
            data = null;
        }
    }

    @Override
    public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
        super.readExternal(in);
        dataType = in.readByte();
        byte[] byteBuf = (byte[]) in.readObject();
        if (byteBuf != null) {
            data = IoBuffer.allocate(0);
            data.setAutoExpand(true);
            SerializeUtils.ByteArrayToByteBuffer(byteBuf, data);
        }
    }

    @Override
    public void writeExternal(ObjectOutput out) throws IOException {
        super.writeExternal(out);
        out.writeByte(dataType);
        if (data != null) {
            out.writeObject(SerializeUtils.ByteBufferToByteArray(data));
        } else {
            out.writeObject(null);
        }
    }
}