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.lifecycle.DefaultLifecycles;
  import org.apache.maven.lifecycle.LifeCyclePluginAnalyzer;
  import org.apache.maven.lifecycle.Lifecycle;
  import org.apache.maven.lifecycle.mapping.LifecycleMapping;
  import org.apache.maven.model.Plugin;
  import org.apache.maven.model.PluginExecution;
  import org.codehaus.plexus.component.annotations.Component;
  import org.codehaus.plexus.component.annotations.Requirement;
  import org.codehaus.plexus.logging.Logger;
  import org.codehaus.plexus.util.StringUtils;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.Comparator;
  import java.util.HashSet;
  import java.util.LinkedHashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * @since 3.0
   * @author Benjamin Bentmann
   * @author Jason van Zyl
   * @author jdcasey
   * @author Kristian Rosenvold (extracted class only)
   *         <p/>
   *         NOTE: This class is not part of any public api and can be changed or deleted without prior notice.
   */
  @Component( role = LifeCyclePluginAnalyzer.class )
  public class DefaultLifecyclePluginAnalyzer
      implements LifeCyclePluginAnalyzer
  {
  
      @Requirement( role = LifecycleMapping.class )
      private Map<String, LifecycleMapping> lifecycleMappings;
  
      @Requirement
      private DefaultLifecycles defaultLifeCycles;
  
      @Requirement
      private Logger logger;
  
      public DefaultLifecyclePluginAnalyzer()
      {
      }
  
      // These methods deal with construction intact Plugin object that look like they come from a standard
      // <plugin/> block in a Maven POM. We have to do some wiggling to pull the sources of information
      // together and this really shows the problem of constructing a sensible default configuration but
      // it's all encapsulated here so it appears normalized to the POM builder.
  
      // We are going to take the project packaging and find all plugin in the default lifecycle and create
      // fully populated Plugin objects, including executions with goals and default configuration taken
      // from the plugin.xml inside a plugin.
      //
  
      public Set<Plugin> getPluginsBoundByDefaultToAllLifecycles( String packaging )
      {
          if ( logger.isDebugEnabled() )
          {
              logger.debug( "Looking up lifecyle mappings for packaging " + packaging + " from "
                  + Thread.currentThread().getContextClassLoader() );
          }
  
          LifecycleMapping lifecycleMappingForPackaging = lifecycleMappings.get( packaging );
  
          if ( lifecycleMappingForPackaging == null )
          {
              return null;
          }
  
          Map<Plugin, Plugin> plugins = new LinkedHashMap<Plugin, Plugin>();
  
          for ( Lifecycle lifecycle : getOrderedLifecycles() )
          {
              org.apache.maven.lifecycle.mapping.Lifecycle lifecycleConfiguration =
                  lifecycleMappingForPackaging.getLifecycles().get( lifecycle.getId() );
 
             Map<String, String> phaseToGoalMapping = null;
 
             if ( lifecycleConfiguration != null )
             {
                 phaseToGoalMapping = lifecycleConfiguration.getPhases();
             }
             else if ( lifecycle.getDefaultPhases() != null )
             {
                 phaseToGoalMapping = lifecycle.getDefaultPhases();
             }
 
             if ( phaseToGoalMapping != null )
             {
                 // These are of the form:
                 //
                 // compile -> org.apache.maven.plugins:maven-compiler-plugin:compile[,gid:aid:goal,...]
                 //
                 for ( Map.Entry<String, String> goalsForLifecyclePhase : phaseToGoalMapping.entrySet() )
                 {
                     String phase = goalsForLifecyclePhase.getKey();
                     String goals = goalsForLifecyclePhase.getValue();
                     if ( goals != null )
                     {
                         parseLifecyclePhaseDefinitions( plugins, phase, goals );
                     }
                 }
             }
         }
 
         return plugins.keySet();
     }
 
     private List<Lifecycle> getOrderedLifecycles()
     {
         // NOTE: The lifecycle order can affect implied execution ids so we better be deterministic.
 
         List<Lifecycle> lifecycles = new ArrayList<Lifecycle>( defaultLifeCycles.getLifeCycles() );
 
         Collections.sort( lifecycles, new Comparator<Lifecycle>()
         {
 
             public int compare( Lifecycle l1, Lifecycle l2 )
             {
                 return l1.getId().compareTo( l2.getId() );
             }
 
         } );
 
         return lifecycles;
     }
 
     private void parseLifecyclePhaseDefinitions( Map<Plugin, Plugin> plugins, String phase, String goals )
     {
         String[] mojos = StringUtils.split( goals, "," );
 
         for ( int i = 0; i < mojos.length; i++ )
         {
             GoalSpec gs = parseGoalSpec( mojos[i].trim() );
 
             if ( gs == null )
             {
                 logger.warn( "Ignored invalid goal specification '" + mojos[i] + "' from lifecycle mapping for phase "
                     + phase );
                 continue;
             }
 
             Plugin plugin = new Plugin();
             plugin.setGroupId( gs.groupId );
             plugin.setArtifactId( gs.artifactId );
             plugin.setVersion( gs.version );
 
             Plugin existing = plugins.get( plugin );
             if ( existing != null )
             {
                 if ( existing.getVersion() == null )
                 {
                     existing.setVersion( plugin.getVersion() );
                 }
                 plugin = existing;
             }
             else
             {
                 plugins.put( plugin, plugin );
             }
 
             PluginExecution execution = new PluginExecution();
             execution.setId( getExecutionId( plugin, gs.goal ) );
             execution.setPhase( phase );
             execution.setPriority( i - mojos.length );
             execution.getGoals().add( gs.goal );
 
             plugin.getExecutions().add( execution );
         }
     }
 
     private GoalSpec parseGoalSpec( String goalSpec )
     {
         GoalSpec gs = new GoalSpec();
 
         String[] p = StringUtils.split( goalSpec.trim(), ":" );
 
         if ( p.length == 3 )
         {
             // <groupId>:<artifactId>:<goal>
             gs.groupId = p[0];
             gs.artifactId = p[1];
             gs.goal = p[2];
         }
         else if ( p.length == 4 )
         {
             // <groupId>:<artifactId>:<version>:<goal>
             gs.groupId = p[0];
             gs.artifactId = p[1];
             gs.version = p[2];
             gs.goal = p[3];
         }
         else
         {
             // invalid
             gs = null;
         }
 
         return gs;
     }
 
     private String getExecutionId( Plugin plugin, String goal )
     {
         Set<String> existingIds = new HashSet<String>();
         for ( PluginExecution execution : plugin.getExecutions() )
         {
             existingIds.add( execution.getId() );
         }
 
         String base = "default-" + goal;
         String id = base;
 
         for ( int index = 1; existingIds.contains( id ); index++ )
         {
             id = base + '-' + index;
         }
 
         return id;
     }
 
     static class GoalSpec
     {
 
         String groupId;
 
         String artifactId;
 
         String version;
 
         String goal;
 
     }
 
 }