/*
    * Copyright (C) 2013 Room Work eXperience
    *
    * This program is free software: you can redistribute it and/or modify
    * it under the terms of the GNU General Public License as published by
    * the Free Software Foundation, either version 3 of the License, or
    * (at your option) any later version.
    *
    * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  package net.rwx.maven.asciidoc.utils;
  
  import java.io.*;
  import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
  import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
  import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
  
  /**
   *
   * @author Arnaud Fonce <arnaud.fonce@r-w-x.net>
   */
  public class FileUtils extends org.apache.commons.io.FileUtils {
  
      private static File temporaryDirectory;
      
      public static String getAsciidocTemporaryPath( String filename, String extension ) throws IOException {
      
          File file = new File( filename );
          
          StringBuilder builder = new StringBuilder();
          
          builder.append( getTemporayAsciidoc() );
          builder.append( File.separator );
          builder.append( file.getName() );
          builder.append( extension );
          
          return builder.toString();
      }
      
      public static void moveFileToDirectory( String fileName, String directoryName ) throws IOException {
          
          File file = new File( fileName );
          File directory = new File( directoryName );
          
          File destFile = FileUtils.getFile( directory, file.getName() );
          if ( destFile.exists() ) {
              forceDelete( destFile );
          }
          
          moveFileToDirectory( file, directory, true );
      }
      
      public static String getTemporaryDirectory() throws IOException {
          StringBuilder builder = new StringBuilder();
          
          builder.append( getTempDirectoryPath() );
          builder.append( File.separator );
          builder.append( "asciidoc-maven-plugin" );
          builder.append( Long.toString(System.nanoTime()) );
          
          File directory = new File( builder.toString() );
          forceMkdir( directory );
          // forceDeleteOnExit( directory );
          
          return directory.getAbsolutePath();
      }
      public static String getTemporayAsciidoc( ) throws IOException {
  
          if( temporaryDirectory == null )
          {
              StringBuilder builder = new StringBuilder();
          
              builder.append( getTempDirectoryPath() );
              builder.append( File.separator );
              builder.append( "asciidoc-maven-plugin" );
              builder.append( Long.toString(System.nanoTime()) );
              temporaryDirectory = new File( builder.toString() );
              forceMkdir( temporaryDirectory );
              forceDeleteOnExit( temporaryDirectory );
          }
          // File f = File.createTempFile("tempAsciidoc", Long.toString(System.nanoTime()));
          // forceMkdir( f );
          // forceDeleteOnExit( f );
          return temporaryDirectory.getAbsolutePath();
  
      }
      
      public static String uncompress( InputStream is, String destination ) throws IOException {
          
          BufferedInputStream in = new BufferedInputStream( is );
          GzipCompressorInputStream gzIn = new GzipCompressorInputStream(in);
          TarArchiveInputStream tarInput = new TarArchiveInputStream( gzIn );
          
         TarArchiveEntry entry = tarInput.getNextTarEntry();
         do {
             File f = new File( destination + "/" + entry.getName() );
             FileUtils.forceMkdir( f.getParentFile() );
             
             if( ! f.isDirectory() ) {
                 OutputStream os = new FileOutputStream( f );
                 byte[] content = new byte[ (int)entry.getSize() ];
                 int byteRead = 0;
                 while( byteRead < entry.getSize() ) {
                     byteRead += tarInput.read(content, byteRead, content.length - byteRead);
                     os.write( content, 0, byteRead );
                 }
 
                 os.close();
                 forceDeleteOnExit( f );
             }
             entry = tarInput.getNextTarEntry();
         }while( entry != null );
 
         gzIn.close();
         
         return destination;
     }
 }