package org.apache.maven.cli.transfer;
   
   /*
    * 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.util.Locale;
  
  import org.apache.maven.cli.transfer.AbstractMavenTransferListener.FileSizeFormat;
  import org.eclipse.aether.transfer.AbstractTransferListener;
  import org.eclipse.aether.transfer.TransferCancelledException;
  import org.eclipse.aether.transfer.TransferEvent;
  import org.eclipse.aether.transfer.TransferResource;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class Slf4jMavenTransferListener
      extends AbstractTransferListener
  {
  
      protected final Logger out;
  
      public Slf4jMavenTransferListener()
      {
          this.out = LoggerFactory.getLogger( Slf4jMavenTransferListener.class );
      }
  
      // TODO should we deprecate?
      public Slf4jMavenTransferListener( Logger out )
      {
          this.out = out;
      }
  
      @Override
      public void transferInitiated( TransferEvent event )
      {
          String action = event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploading" : "Downloading";
          String direction = event.getRequestType() == TransferEvent.RequestType.PUT ? "to" : "from";
  
          TransferResource resource = event.getResource();
          StringBuilder message = new StringBuilder();
          message.append( action ).append( ' ' ).append( direction ).append( ' ' ).append( resource.getRepositoryId() );
          message.append( ": " );
          message.append( resource.getRepositoryUrl() ).append( resource.getResourceName() );
  
          out.info( message.toString() );
      }
  
      @Override
      public void transferCorrupted( TransferEvent event )
          throws TransferCancelledException
      {
          TransferResource resource = event.getResource();
          out.warn( event.getException().getMessage() + " from " + resource.getRepositoryId() + " for "
              + resource.getRepositoryUrl() + resource.getResourceName() );
      }
  
      @Override
      public void transferSucceeded( TransferEvent event )
      {
          String action = ( event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploaded" : "Downloaded" );
          String direction = event.getRequestType() == TransferEvent.RequestType.PUT ? "to" : "from";
  
          TransferResource resource = event.getResource();
          long contentLength = event.getTransferredBytes();
          FileSizeFormat format = new FileSizeFormat( Locale.ENGLISH );
  
          StringBuilder message = new StringBuilder();
          message.append( action ).append( ' ' ).append( direction ).append( ' ' ).append( resource.getRepositoryId() );
          message.append( ": " );
          message.append( resource.getRepositoryUrl() ).append( resource.getResourceName() );
          message.append( " (" ).append( format.format( contentLength ) );
  
          long duration = System.currentTimeMillis() - resource.getTransferStartTime();
          if ( duration > 0L )
          {
              double bytesPerSecond = contentLength / ( duration / 1000.0 );
              message.append( " at " ).append( format.format( (long) bytesPerSecond ) ).append( "/s" );
          }
  
          message.append( ')' );
          out.info( message.toString() );
      }
  
 }