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/**
 * Copyright (C) 2010-2016 Structr GmbH
 *
 * This file is part of Structr .
 *
 * Structr 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.
 *
 * Structr 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 Structr.  If not, see .
 */
package org.structr.cloud.message;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import org.structr.cloud.CloudConnection;
import org.structr.common.error.FrameworkException;
import org.structr.core.graph.SyncCommand;

/**
 * Represents a single chunk of a FileNodeDataContainer that can be transmitted to a remote structr instance.
 *
 *
 */
public class FileNodeChunk extends DataContainer {

	protected String containerId = null;
	protected int chunkSize = 0;
	protected long fileSize = 0;
	protected byte[] binaryContent;

	public FileNodeChunk() {
		super(0);
	}

	public FileNodeChunk(String containerId, long fileSize, int sequenceNumber, int chunkSize) {

		super(sequenceNumber);

		this.containerId = containerId;
		this.chunkSize = chunkSize;
		this.fileSize = fileSize;

		binaryContent = new byte[chunkSize];
	}

	public byte[] getBuffer() {
		return (binaryContent);
	}

	public long getFileSize() {
		return (fileSize);
	}

	public byte[] getBinaryContent() {
		return binaryContent;
	}

	public String getContainerId() {
		return (containerId);
	}

	@Override
	public String toString() {
		return "FileNodeChunk()";
	}

	@Override
	public void onRequest(CloudConnection serverConnection) throws IOException, FrameworkException {
		serverConnection.fileChunk(this);
		sendKeepalive(serverConnection);
	}

	@Override
	public void onResponse(CloudConnection clientConnection) throws IOException, FrameworkException {
	}

	@Override
	public void afterSend(CloudConnection connection) {
	}

	@Override
	protected void deserializeFrom(DataInputStream inputStream) throws IOException {

		this.containerId   = (String)SyncCommand.deserialize(inputStream);
		this.chunkSize     = (Integer)SyncCommand.deserialize(inputStream);
		this.fileSize      = (Long)SyncCommand.deserialize(inputStream);

		this.binaryContent = SyncCommand.deserializeData(inputStream);

		// fixme: byte array is not handled correctly

		super.deserializeFrom(inputStream);
	}

	@Override
	protected void serializeTo(DataOutputStream outputStream) throws IOException {

		SyncCommand.serialize(outputStream, containerId);
		SyncCommand.serialize(outputStream, chunkSize);
		SyncCommand.serialize(outputStream, fileSize);

		SyncCommand.serializeData(outputStream, binaryContent);

		super.serializeTo(outputStream);
	}
}