/**
 * 
 */
package at.gv.egiz.pdfas.impl.output;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import at.gv.egiz.pdfas.framework.output.DataSink;
import at.gv.egiz.pdfas.impl.input.FileBased;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * @author wprinz
 * 
 */
public class FileBasedDataSink implements DataSink, FileBased
{
  /**
   * The log.
   */
  private static final Log log = LogFactory.getLog(FileBasedDataSink.class);

  protected String mimeType = null;
  protected String characterEncoding = null;
  
  /**
   * The output file.
   */
  protected File outputFile = null;

  /**
   * Creates a file based PdfDataSink.
   * 
   * @param file
   *          The file.
   * @throws IOException
   *           F.e.
   */
  public FileBasedDataSink(File file) throws IOException
  {
    if (!file.exists())
    {
      file.createNewFile();
    }
    if (!file.isFile())
    {
      throw new IOException("The file '" + file + "' is not a normal file.");
    }
    if (!file.canWrite())
    {
      throw new IOException("The file '" + file + "' cannot be written.");
    }

    this.outputFile = file;
  }

  /**
   * @see at.gv.egiz.pdfas.impl.input.FileBased#getFile()
   */
  public File getFile()
  {
    return this.outputFile;
  }
  
  

  protected OutputStream createOutputStream()
  {
    try
    {
      FileOutputStream fos = new FileOutputStream(getFile());
      return fos;
    }
    catch (IOException e)
    {
      log.error("Couldn't create OutputStream for file " + getFile() + ". Returning null.");
      log.error(e);

      return null;

    }
  }

  /**
   * @see at.gv.egiz.pdfas.framework.output.DataSink#createOutputStream(java.lang.String)
   */
  public OutputStream createOutputStream(String mimeType)
  {
    return createOutputStream(mimeType, null);
  }

  /**
   * @see at.gv.egiz.pdfas.framework.output.DataSink#createOutputStream(java.lang.String, java.lang.String)
   */
  public OutputStream createOutputStream(String mimeType, String characterEncoding)
  {
    this.mimeType = mimeType;
    this.characterEncoding = characterEncoding;
    
    return createOutputStream();
  }

  /**
   * @return the mimeType
   */
  public String getMimeType()
  {
    return mimeType;
  }

  /**
   * @return the characterEncoding
   */
  public String getCharacterEncoding()
  {
    return characterEncoding;
  }


  
}