package org.apache.maven.artifact.resolver;

/*
 * 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.File;
import java.io.InputStream;

import org.apache.maven.wagon.ResourceDoesNotExistException;
import org.apache.maven.wagon.TransferFailedException;
import org.apache.maven.wagon.authorization.AuthorizationException;
import org.apache.maven.wagon.events.TransferListener;
import org.apache.maven.wagon.providers.file.FileWagon;
import org.apache.maven.wagon.resource.Resource;

/**
 * Wagon used for test cases that annotates some methods. Note that this is not a thread-safe implementation. 
 */
public class TestFileWagon
    extends FileWagon
{
    private TestTransferListener testTransferListener;
    private boolean insideGet;

    protected void getTransfer( Resource resource, 
                                File destination, 
                                InputStream input, 
                                boolean closeInput, 
                                int maxSize )
        throws TransferFailedException
    {
        addTransfer( "getTransfer " + resource.getName() );
        super.getTransfer( resource, destination, input, closeInput, maxSize );
    }

    public void get( String resourceName, File destination )
        throws TransferFailedException, 
               ResourceDoesNotExistException, 
               AuthorizationException
    {
        addTransfer( "get " + resourceName );
        
        insideGet = true;
        
        super.get( resourceName, destination );
        
        insideGet = false;
    }

    private void addTransfer( String resourceName )
    {
        if ( testTransferListener != null )
        {
            testTransferListener.addTransfer( resourceName );
        }
    }

    public boolean getIfNewer( String resourceName, File destination, long timestamp )
        throws TransferFailedException, 
               ResourceDoesNotExistException, 
               AuthorizationException
    {
        if ( !insideGet )
        {
            addTransfer( "getIfNewer " + resourceName );
        }
        return super.getIfNewer( resourceName, destination, timestamp );
    }

    public void addTransferListener( TransferListener listener )
    {
        if ( listener instanceof TestTransferListener )
        {
            testTransferListener = (TestTransferListener) listener;
        }
        super.addTransferListener( listener );
    }
}
