/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * Contributor(s):
 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
package com.sun.enterprise.management.support;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;


public final class UploadInfo extends UpDownInfo
{
	private final String		mName;
	private final long			mTotalSize;
	private FileOutputStream	mOutputStream;
	private long			mWrittenSoFar;
	
	
		public
	UploadInfo(
		final Object	id,
		final String	name,
		final long		totalSize )
		throws IOException
	{
		super( id, createTempFile( id, name, totalSize ) );
		
		mName	= name;
		
		mTotalSize	= totalSize;
		
		getFile().createNewFile();
		getFile().deleteOnExit();
		mOutputStream	= new FileOutputStream( getFile() );
		
		mWrittenSoFar	= 0;
	}
	
		private static File
	createTempFile( final Object id, final String name, final long totalSize )
		throws IOException
	{
        final String tempName = (name != null) ? name : id + "_" + totalSize;
        File  actual   = new File( tempName );
        if ( actual.exists() )
        {
            actual  = File.createTempFile( tempName, null );
        }
        return( actual ); 
	}
	
		public boolean
	isDone()
	{
		return( mWrittenSoFar == mTotalSize );
	}
	
	
	/**
		@return true if done, false otherwise
	 */
		public boolean
	write( final byte[] bytes )
		throws IOException
	{
		if ( isDone() || mWrittenSoFar + bytes.length > mTotalSize )
		{
			throw new IllegalArgumentException( "too many bytes" );
		}
		getOutputStream().write( bytes );
		
		mWrittenSoFar	+= bytes.length;
		
		if ( isDone() )
		{
			mOutputStream.close();
			mOutputStream	= null;
		}
		
		accessed();
		
		return( isDone() );
	}
	
	
	
		public long
	getTotalSize()
	{
		return( mTotalSize );
	}
	
		public void
	cleanup()
		throws IOException
	{
		if ( mOutputStream != null )
		{
			mOutputStream.close();
		}
		
		getFile().delete();
	}
	
		private FileOutputStream
	getOutputStream()
	{
		return( mOutputStream );
	}
}