package com.soebes.maven.extensions.artifact;
   
   /*
    * 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.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  import org.eclipse.aether.RepositoryEvent;
  import org.eclipse.aether.artifact.Artifact;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.soebes.maven.extensions.TimePlusSize;
  
  /**
   * @author Karl Heinz Marbaise <a href="mailto:kama@soebes.de">kama@soebes.de</a>
   */
  public abstract class AbstractArtifactTimer
  {
      private final Logger LOGGER = LoggerFactory.getLogger( getClass() );
  
      private Map<String, TimePlusSize> timerEvents;
  
      public AbstractArtifactTimer()
      {
          this.timerEvents = new ConcurrentHashMap<>();
      }
  
      protected String getArtifactId( Artifact artifact )
      {
          StringBuilder sb = new StringBuilder( 128 );
          sb.append( artifact.getGroupId() ) //
            .append( ":" ).append( artifact.getArtifactId() ) //
            .append( ":" ).append( artifact.getVersion() );
  
          if ( artifact.getClassifier() != null )
          {
              sb.append( ':' ).append( artifact.getClassifier() );
          }
          
          sb.append( ':' ).append( artifact.getExtension() );
          return sb.toString();
      }
  
      protected Map<String, TimePlusSize> getTimerEvents()
      {
          return timerEvents;
      }
  
      public void start( RepositoryEvent event )
      {
          String artifactId = getArtifactId( event.getArtifact() );
          TimePlusSize systemTime = new TimePlusSize();
          systemTime.start();
          getTimerEvents().put( artifactId, systemTime );
      }
  
      public void stop( RepositoryEvent event )
      {
          String artifactId = getArtifactId( event.getArtifact() );
          if ( !getTimerEvents().containsKey( artifactId ) )
          {
              throw new IllegalArgumentException( "Unknown artifactId (" + artifactId + ")" );
          }
          getTimerEvents().get( artifactId ).stop();
  
          long size = 0;
          // This could happen if an artifact could not be found for download (like site_..xml etc.)
          if ( event.getArtifact().getFile() != null )
          {
              size = event.getArtifact().getFile().length();
          }
          getTimerEvents().get( artifactId ).setSize( size );
      }
  
      private final double MiB = 1024 * 1024;
  
      protected double calculateMegabytesPerSeconds( long timeInMilliseconds, long sizeInBytes )
      {
          double dividerTime = ( timeInMilliseconds / 1000.0 );
          return (double) sizeInBytes / dividerTime / MiB;
      }
 
 }