package org.apache.maven.report.projectinfo.dependencies;
   
   /*
    * 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.IOException;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.jar.JarEntry;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.shared.dependency.graph.DependencyNode;
  import org.apache.maven.shared.jar.JarAnalyzer;
  import org.apache.maven.shared.jar.JarData;
  import org.apache.maven.shared.jar.classes.JarClasses;
  import org.apache.maven.shared.jar.classes.JarClassesAnalysis;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * @since 2.1
   */
  public class Dependencies
  {
      private final MavenProject project;
  
      private final DependencyNode dependencyNode;
  
      private final JarClassesAnalysis classesAnalyzer;
  
      /**
       * @since 2.1
       */
      private List<Artifact> projectDependencies;
  
      /**
       * @since 2.1
       */
      private List<Artifact> projectTransitiveDependencies;
  
      /**
       * @since 2.1
       */
      private List<Artifact> allDependencies;
  
      /**
       * @since 2.1
       */
      private Map<String, List<Artifact>> dependenciesByScope;
  
      /**
       * @since 2.1
       */
      private Map<String, List<Artifact>> transitiveDependenciesByScope;
  
      /**
       * @since 2.1
       */
      private Map<String, JarData> dependencyDetails;
  
      /**
       * Default constructor
       *
       * @param project the MavenProject.
       * @param dependencyTreeNode the DependencyNode.
       * @param classesAnalyzer the JarClassesAnalysis.
       */
      public Dependencies( MavenProject project, DependencyNode dependencyTreeNode, JarClassesAnalysis classesAnalyzer )
      {
          this.project = project;
          this.dependencyNode = dependencyTreeNode;
          this.classesAnalyzer = classesAnalyzer;
      }
  
      /**
       * Getter for the project
       *
       * @return the project
       */
      public MavenProject getProject()
     {
         return project;
     }
 
     /**
      * @return <code>true</code> if getProjectDependencies() is not empty, <code>false</code> otherwise.
      */
     public boolean hasDependencies()
     {
         return ( getProjectDependencies() != null ) && ( !getProjectDependencies().isEmpty() );
     }
 
     /**
      * @return a list of <code>Artifact</code> from the project.
      */
     public List<Artifact> getProjectDependencies()
     {
         if ( projectDependencies != null )
         {
             return projectDependencies;
         }
 
         projectDependencies = new ArrayList<>();
         for ( DependencyNode dep : dependencyNode.getChildren() )
         {
             projectDependencies.add( dep.getArtifact() );
         }
 
         return projectDependencies;
     }
 
     /**
      * @return a list of transitive <code>Artifact</code> from the project.
      */
     public List<Artifact> getTransitiveDependencies()
     {
         if ( projectTransitiveDependencies != null )
         {
             return projectTransitiveDependencies;
         }
 
         projectTransitiveDependencies = new ArrayList<>( getAllDependencies() );
         projectTransitiveDependencies.removeAll( getProjectDependencies() );
 
         return projectTransitiveDependencies;
     }
 
     /**
      * @return a list of included <code>Artifact</code> returned by the dependency tree.
      */
     public List<Artifact> getAllDependencies()
     {
         if ( allDependencies != null )
         {
             return allDependencies;
         }
 
         allDependencies = new ArrayList<>();
 
         addAllChildrenDependencies( dependencyNode );
 
         return allDependencies;
     }
 
     /**
      * @param isTransitively <code>true</code> to return transitive dependencies, <code>false</code> otherwise.
      * @return a map with supported scopes as key and a list of <code>Artifact</code> as values.
      * @see Artifact#SCOPE_COMPILE
      * @see Artifact#SCOPE_PROVIDED
      * @see Artifact#SCOPE_RUNTIME
      * @see Artifact#SCOPE_SYSTEM
      * @see Artifact#SCOPE_TEST
      */
     public Map<String, List<Artifact>> getDependenciesByScope( boolean isTransitively )
     {
         if ( isTransitively )
         {
             if ( transitiveDependenciesByScope != null )
             {
                 return transitiveDependenciesByScope;
             }
 
             transitiveDependenciesByScope = new HashMap<>();
             for ( Artifact artifact : getTransitiveDependencies() )
             {
                 List<Artifact> multiValue = transitiveDependenciesByScope.get( artifact.getScope() );
                 if ( multiValue == null )
                 {
                     multiValue = new ArrayList<>();
                 }
 
                 if ( !multiValue.contains( artifact ) )
                 {
                     multiValue.add( artifact );
                 }
                 transitiveDependenciesByScope.put( artifact.getScope(), multiValue );
             }
 
             return transitiveDependenciesByScope;
         }
 
         if ( dependenciesByScope != null )
         {
             return dependenciesByScope;
         }
 
         dependenciesByScope = new HashMap<>();
         for ( Artifact artifact : getProjectDependencies() )
         {
             List<Artifact> multiValue = dependenciesByScope.get( artifact.getScope() );
             if ( multiValue == null )
             {
                 multiValue = new ArrayList<>();
             }
 
             if ( !multiValue.contains( artifact ) )
             {
                 multiValue.add( artifact );
             }
             dependenciesByScope.put( artifact.getScope(), multiValue );
         }
 
         return dependenciesByScope;
     }
 
     /**
      * @param artifact the artifact.
      * @return the jardata object from the artifact
      * @throws IOException if any
      */
     public JarData getJarDependencyDetails( Artifact artifact )
         throws IOException
     {
         if ( dependencyDetails == null )
         {
             dependencyDetails = new HashMap<>();
         }
 
         JarData jarData = dependencyDetails.get( artifact.getId() );
         if ( jarData != null )
         {
             return jarData;
         }
 
         File file = getFile( artifact );
 
         if ( file.isDirectory() )
         {
             jarData = new JarData( artifact.getFile(), null, new ArrayList<JarEntry>() );
 
             jarData.setJarClasses( new JarClasses() );
         }
         else
         {
             JarAnalyzer jarAnalyzer = new JarAnalyzer( file );
 
             try
             {
                 classesAnalyzer.analyze( jarAnalyzer );
             }
             finally
             {
                 jarAnalyzer.closeQuietly();
             }
             
             jarData = jarAnalyzer.getJarData();
         }
 
         dependencyDetails.put( artifact.getId(), jarData );
     
         return jarData;
     }
 
     // ----------------------------------------------------------------------
     // Private methods
     // ----------------------------------------------------------------------
 
     /**
      * Recursive method to get all dependencies from a given <code>dependencyNode</code>
      *
      * @param dependencyNode not null
      */
     private void addAllChildrenDependencies( DependencyNode dependencyNode )
     {
         for ( DependencyNode subdependencyNode : dependencyNode.getChildren() )
         {
             Artifact artifact = subdependencyNode.getArtifact();
 
             if ( artifact.getGroupId().equals( project.getGroupId() )
                 && artifact.getArtifactId().equals( project.getArtifactId() )
                 && artifact.getVersion().equals( project.getVersion() ) )
             {
                 continue;
             }
 
             if ( !allDependencies.contains( artifact ) )
             {
                 allDependencies.add( artifact );
             }
 
             addAllChildrenDependencies( subdependencyNode );
         }
     }
 
     /**
      * get the artifact's file, with detection of target/classes directory with already packaged jar available.
      *
      * @param artifact the artifact to retrieve the physical file
      * @return the physical file representing the given artifact
      */
     public File getFile( Artifact artifact )
     {
         File file = artifact.getFile();
 
         if ( file.isDirectory() )
         {
             // MPIR-322: if target/classes directory, try target/artifactId-version[-classifier].jar
             String filename = artifact.getArtifactId() + '-' + artifact.getVersion();
             if ( StringUtils.isNotEmpty( artifact.getClassifier() ) )
             {
                 filename += '-' + artifact.getClassifier();
             }
             filename += '.' + artifact.getType();
             
             File jar = new File( file, "../" + filename );
 
             if ( jar.exists() )
             {
                 return jar;
             }
         }
 
         return file;
     }
 }