package org.apache.maven.plugins.dependency.utils;
   
   /*
    * 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.BufferedReader;
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.OutputStreamWriter;
  import java.io.StringReader;
  import java.io.Writer;
  import java.util.Objects;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.artifact.ArtifactUtils;
  import org.apache.maven.plugin.logging.Log;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * Utility class with static helper methods.
   * 
   * @author <a href="mailto:brianf@apache.org">Brian Fox</a>
   */
  public final class DependencyUtil
  {
  
      /**
       * Builds the file name. If removeVersion is set, then the file name must be reconstructed from the artifactId,
       * Classifier (if used) and Type. Otherwise, this method returns the artifact file name.
       * 
       * @param artifact File to be formatted.
       * @param removeVersion Specifies if the version should be removed from the file name.
       * @return Formatted file name in the format artifactId-[version]-[classifier].[type]
       * @see #getFormattedFileName(Artifact, boolean, boolean)
       */
      public static String getFormattedFileName( Artifact artifact, boolean removeVersion )
      {
          return getFormattedFileName( artifact, removeVersion, false );
      }
  
      /**
       * Builds the file name. If removeVersion is set, then the file name must be reconstructed from the groupId (if
       * <b>prependGroupId</b> is true) artifactId, Classifier (if used) and Type. Otherwise, this method returns the
       * artifact file name.
       * 
       * @param artifact File to be formatted.
       * @param removeVersion Specifies if the version should be removed from the file name.
       * @param prependGroupId Specifies if the groupId should be prepended to the file name.
       * @return Formatted file name in the format [groupId].artifactId-[version]-[classifier].[type]
       */
      public static String getFormattedFileName( Artifact artifact, boolean removeVersion, boolean prependGroupId )
      {
          return getFormattedFileName( artifact, removeVersion, prependGroupId, false );
      }
  
      /**
       * Builds the file name. If removeVersion is set, then the file name must be reconstructed from the groupId (if
       * <b>prependGroupId</b> is true) artifactId, Classifier (if used), and Type. Otherwise, this method returns the
       * artifact file name.
       * 
       * @param artifact file to be formatted
       * @param removeVersion Specifies if the version should be removed from the file name
       * @param prependGroupId Specifies if the groupId should be prepended to the file name
       * @param useBaseVersion Specifies if the baseVersion of the artifact should be used instead of the version
       * @return Formatted file name in the format [groupId].artifactId-[version]-[classifier].[type]
       */
      public static String getFormattedFileName( Artifact artifact, boolean removeVersion, boolean prependGroupId,
                                                 boolean useBaseVersion )
      {
          return getFormattedFileName( artifact, removeVersion, prependGroupId, useBaseVersion, false );
      }
  
      /**
       * Builds the file name. If removeVersion is set, then the file name must be reconstructed from the groupId (if
       * <b>prependGroupId</b> is true) artifactId, Classifier (if used) and Type. Otherwise, this method returns the
       * artifact file name.
       * 
       * @param artifact File to be formatted.
       * @param removeVersion Specifies if the version should be removed from the file name.
       * @param prependGroupId Specifies if the groupId should be prepended to the file name.
       * @param useBaseVersion Specifies if the baseVersion of the artifact should be used instead of the version.
       * @param removeClassifier Specifies if the classifier of the artifact should be remved from the file name.
      * @return Formatted file name in the format [groupId].artifactId-[version]-[classifier].[type]
      */
     public static String getFormattedFileName( Artifact artifact, boolean removeVersion, boolean prependGroupId,
                                                boolean useBaseVersion, boolean removeClassifier )
     {
         StringBuilder destFileName = new StringBuilder();
 
         if ( prependGroupId )
         {
             destFileName.append( artifact.getGroupId() ).append( "." );
         }
 
         String versionString;
         if ( !removeVersion )
         {
             if ( useBaseVersion )
             {
                 versionString = "-" + ArtifactUtils.toSnapshotVersion( artifact.getVersion() );
             }
             else
             {
                 versionString = "-" + artifact.getVersion();
             }
         }
         else
         {
             versionString = "";
         }
 
         String classifierString = "";
 
         if ( !removeClassifier && StringUtils.isNotEmpty( artifact.getClassifier() ) )
         {
             classifierString = "-" + artifact.getClassifier();
         }
         destFileName.append( artifact.getArtifactId() ).append( versionString );
         destFileName.append( classifierString ).append( "." );
         destFileName.append( artifact.getArtifactHandler().getExtension() );
 
         return destFileName.toString();
     }
 
     /**
      * Formats the outputDirectory based on type.
      * 
      * @param useSubdirsPerScope if a new sub directory should be used for each scope.
      * @param useSubdirsPerType if a new sub directory should be used for each type.
      * @param useSubdirPerArtifact if a new sub directory should be used for each artifact.
      * @param useRepositoryLayout if dependencies must be moved into a Maven repository layout, if set, other settings
      *            will be ignored.
      * @param removeVersion if the version must not be mentioned in the filename
      * @param outputDirectory base outputDirectory.
      * @param artifact information about the artifact.
      * @return a formatted File object to use for output.
      */
     public static File getFormattedOutputDirectory( boolean useSubdirsPerScope, boolean useSubdirsPerType,
                                                     boolean useSubdirPerArtifact, boolean useRepositoryLayout,
                                                     boolean removeVersion, File outputDirectory, Artifact artifact )
     {
         StringBuilder sb = new StringBuilder( 128 );
         if ( useRepositoryLayout )
         {
             // group id
             sb.append( artifact.getGroupId().replace( '.', File.separatorChar ) ).append( File.separatorChar );
             // artifact id
             sb.append( artifact.getArtifactId() ).append( File.separatorChar );
             // version
             sb.append( artifact.getBaseVersion() ).append( File.separatorChar );
         }
         else
         {
             if ( useSubdirsPerScope )
             {
                 sb.append( artifact.getScope() ).append( File.separatorChar );
             }
             if ( useSubdirsPerType )
             {
                 sb.append( artifact.getType() ).append( "s" ).append( File.separatorChar );
             }
             if ( useSubdirPerArtifact )
             {
                 String artifactString = getDependencyId( artifact, removeVersion );
                 sb.append( artifactString ).append( File.separatorChar );
             }
         }
         return new File( outputDirectory, sb.toString() );
     }
 
     private static String getDependencyId( Artifact artifact, boolean removeVersion )
     {
         StringBuilder sb = new StringBuilder();
 
         sb.append( artifact.getArtifactId() );
 
         if ( !removeVersion )
         {
             sb.append( "-" );
             sb.append( artifact.getVersion() );
         }
 
         if ( StringUtils.isNotEmpty( artifact.getClassifier() ) )
         {
             sb.append( "-" );
             sb.append( artifact.getClassifier() );
         }
 
         // if the classifier and type are the same (sources), then don't
         // repeat.
         // avoids names like foo-sources-sources
         if ( !Objects.equals( artifact.getClassifier(), artifact.getType() ) )
         {
             sb.append( "-" );
             sb.append( artifact.getType() );
         }
 
         return sb.toString();
     }
 
     /**
      * Writes the specified string to the specified file.
      * 
      * @param string the string to write
      * @param file the file to write to
      * @param append append to existing file or not
      * @param log ignored
      * @throws IOException if an I/O error occurs
      * @deprecated specify an encoding instead of a log
      */
     @Deprecated
     public static synchronized void write( String string, File file, boolean append, Log log )
         throws IOException
     {
         write( string, file, append, "UTF-8" );
     }
     
     /**
      * Writes the specified string to the specified file.
      * 
      * @param string the string to write
      * @param file the file to write to
      * @param append append to existing file or not
      * @param encoding character set name
      * @throws IOException if an I/O error occurs
      */
     public static synchronized void write( String string, File file, boolean append, String encoding )
         throws IOException
     {
         file.getParentFile().mkdirs(); 
 
         try ( Writer writer = new OutputStreamWriter( new FileOutputStream( file, append ), encoding ) )
         {
             writer.write( string );
         }
     }
 
     /**
      * Writes the specified string to the log at info level.
      * 
      * @param string the string to write
      * @param log where to log information
      * @throws IOException if an I/O error occurs
      */
     public static synchronized void log( String string, Log log )
         throws IOException
     {
         BufferedReader reader = new BufferedReader( new StringReader( string ) );
 
         String line;
 
         while ( ( line = reader.readLine() ) != null )
         {
             log.info( line );
         }
 
         reader.close();
     }
 
     /**
      * Mainly used to parse excludes, includes configuration.
      * 
      * @param str the string to split
      * @return the result items
      */
     public static String[] tokenizer( String str )
     {
         return StringUtils.split( cleanToBeTokenizedString( str ), "," );
     }
 
     /**
      * Clean up configuration string before it can be tokenized.
      * 
      * @param str the string which should be cleaned
      * @return cleaned up string
      */
     public static String cleanToBeTokenizedString( String str )
     {
         String ret = "";
         if ( !StringUtils.isEmpty( str ) )
         {
             // remove initial and ending spaces, plus all spaces next to commas
             ret = str.trim().replaceAll( "[\\s]*,[\\s]*", "," );
         }
 
         return ret;
     }
 }