/*
    * Copyright 2022 The Apache Software Foundation
    *
    * Licensed 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.
   */
  package org.codehaus.plexus.archiver.zstd;
  
  import java.io.BufferedOutputStream;
  import java.io.IOException;
  
  import org.apache.commons.compress.compressors.zstandard.ZstdCompressorOutputStream;
  import org.codehaus.plexus.archiver.ArchiverException;
  import org.codehaus.plexus.archiver.util.Compressor;
  
  import static org.codehaus.plexus.archiver.util.Streams.bufferedOutputStream;
  import static org.codehaus.plexus.archiver.util.Streams.fileOutputStream;
  
  /**
   * Zstd compression
   */
  public class ZstdCompressor extends Compressor {
  
      private Integer level;
  
      private ZstdCompressorOutputStream zstdOut;
  
      public ZstdCompressor() {}
  
      public void setLevel(Integer level) {
          this.level = level;
      }
  
      @Override
      public void compress() throws ArchiverException {
          try {
              BufferedOutputStream outStream = bufferedOutputStream(fileOutputStream(getDestFile()));
              ZstdCompressorOutputStream.Builder zstdOutBuilder = ZstdCompressorOutputStream.builder();
              zstdOutBuilder.setOutputStream(outStream);
              if (level != null) {
                  zstdOutBuilder.setLevel(level);
              }
              zstdOut = zstdOutBuilder.get();
              compress(getSource(), zstdOut);
          } catch (IOException ioe) {
              throw new ArchiverException("Problem creating zstd " + ioe.getMessage(), ioe);
          }
      }
  
      @Override
      public void close() {
          try {
              if (this.zstdOut != null) {
                  this.zstdOut.close();
                  zstdOut = null;
              }
          } catch (final IOException e) {
              throw new ArchiverException("Failure closing target.", e);
          }
      }
  }