package org.apache.maven.lifecycle.internal;
   
   /*
    * 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 org.apache.maven.project.MavenProject;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * @since 3.0
   * @author Kristian Rosenvold
   *         NOTE: This class is not part of any public api and can be changed or deleted without prior notice.
   */
  public class BuildLogItem
  {
      private final ExecutionPlanItem executionPlanItem;
  
      private final MavenProject project;
  
      private final long startTime;
  
      private long endTime;
  
      private final List<DependencyLogEntry> dependencies =
          Collections.synchronizedList( new ArrayList<DependencyLogEntry>() );
  
      public BuildLogItem( MavenProject project, ExecutionPlanItem executionPlanItem )
      {
          this.executionPlanItem = executionPlanItem;
          this.project = project;
          startTime = System.currentTimeMillis();
  
      }
  
  
      public MavenProject getProject()
      {
          return project;
      }
  
      public void setComplete()
      {
          endTime = System.currentTimeMillis();
      }
  
      public void addWait( MavenProject upstreamProject, ExecutionPlanItem inSchedule, long startWait )
      {
          long now = System.currentTimeMillis();
          dependencies.add( new DependencyLogEntry( upstreamProject, inSchedule, startWait, now, null ) );
      }
  
      public void addDependency( MavenProject upstreamProject, String message )
      {
          dependencies.add( new DependencyLogEntry( upstreamProject, message ) );
      }
  
      public String toString( long rootStart )
      {
          StringBuilder result = new StringBuilder();
          result.append( String.format( "%1d  %2d ", startTime - rootStart, endTime - rootStart ) );
          result.append( project.getName() );
          result.append( " " );
          result.append( getMojoExecutionDescription( executionPlanItem ) );
          if ( dependencies.size() > 0 )
          {
              result.append( "\n" );
              for ( DependencyLogEntry waitLogEntry : dependencies )
              {
                  result.append( "    " );
                  result.append( waitLogEntry.toString() );
                  result.append( "\n" );
              }
          }
          return result.toString();
      }
  
  
      public Object toGraph( long rootStart )
      {
          StringBuilder result = new StringBuilder();
         if ( dependencies.size() > 0 )
         {
             for ( DependencyLogEntry waitLogEntry : dependencies )
             {
                 result.append( "        " );
                 result.append( nodeKey( project, executionPlanItem ) );
                 result.append( " ->   " );
                 result.append( waitLogEntry.toNodeKey() );
                 result.append( waitLogEntry.toNodeDescription( rootStart ) );
                 result.append( "\n" );
             }
         }
         else
         {
             result.append( "        " );
             result.append( nodeKey( project, executionPlanItem ) );
             result.append( "\n" );
         }
         return result.toString();
     }
 
     private static String nodeKey( MavenProject mavenProject, ExecutionPlanItem executionPlanItem )
     {
         String key = mavenProject.getArtifactId();
         if ( executionPlanItem != null )
         {
             key += "_" + getMojoExecutionDescription( executionPlanItem );
         }
         return key.replace( ".", "_" ).replace( ":", "_" );
     }
 
     private static String getMojoExecutionDescription( ExecutionPlanItem executionPlanItem )
     {
         if ( executionPlanItem.getMojoExecution() != null )
         {
             return executionPlanItem.getMojoExecution().getArtifactId() + getLifeCyclePhase( executionPlanItem );
         }
         else
         {
             return "";
         }
     }
 
     private static String getLifeCyclePhase( ExecutionPlanItem executionPlanItem )
     {
         return executionPlanItem.getLifecyclePhase() != null ? "[" + executionPlanItem.getLifecyclePhase() + "]" : "";
     }
 
 
     class DependencyLogEntry
     {
         private final ExecutionPlanItem executionPlanItem;
 
         private final MavenProject upstreamProject;
 
         private final Long start;
 
         private final Long stop;
 
         private final String message;
 
         DependencyLogEntry( MavenProject upstreamProject, ExecutionPlanItem executionPlanItem, Long start, Long stop,
                             String message )
         {
             this.upstreamProject = upstreamProject;
             this.executionPlanItem = executionPlanItem;
             this.start = start;
             this.stop = stop;
             this.message = message;
         }
 
         DependencyLogEntry( MavenProject upstreamProject, String message )
         {
             this( upstreamProject, null, null, null, message );
         }
 
         public String toString()
         {
             return upstreamProject.getName() + ":" + getExecutionPlanItem() + getElapsed() + getMessage();
         }
 
         public String toNodeKey()
         {
             return nodeKey( upstreamProject, executionPlanItem );
         }
 
         public String toNodeDescription( long rootStart )
         {
             return "";
         }
 
 
         private String getMessage()
         {
             return message != null ? message : "";
         }
 
         private String getExecutionPlanItem()
         {
             if ( executionPlanItem != null )
             {
                 return getMojoExecutionDescription( executionPlanItem );
             }
             else
             {
                 return "";
             }
         }
 
         private String getElapsed()
         {
             if ( start != null && stop != null )
             {
                 long elapsed = stop - start;
                 return elapsed > 0 ? ", wait=" + elapsed : "";
             }
             return "";
         }
     }
 
 }