package org.eclipse.aether.transport.classpath;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import java.io.ByteArrayOutputStream;
import java.nio.Buffer;
import java.nio.ByteBuffer;

import org.eclipse.aether.spi.connector.transport.TransportListener;
import org.eclipse.aether.transfer.TransferCancelledException;

class RecordingTransportListener
    extends TransportListener
{

    public final ByteArrayOutputStream baos = new ByteArrayOutputStream( 1024 );

    public long dataOffset;

    public long dataLength;

    public int startedCount;

    public int progressedCount;

    public boolean cancelStart;

    public boolean cancelProgress;

    @Override
    public void transportStarted( long dataOffset, long dataLength )
        throws TransferCancelledException
    {
        startedCount++;
        progressedCount = 0;
        this.dataLength = dataLength;
        this.dataOffset = dataOffset;
        baos.reset();
        if ( cancelStart )
        {
            throw new TransferCancelledException();
        }
    }

    @Override
    public void transportProgressed( ByteBuffer data )
        throws TransferCancelledException
    {
        progressedCount++;
        baos.write( data.array(), data.arrayOffset() + ( (Buffer) data ).position(), data.remaining() );
        if ( cancelProgress )
        {
            throw new TransferCancelledException();
        }
    }

}
