/**
 * Orthanc - A Lightweight, RESTful DICOM Store
 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
 * Belgium
 *
 * 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.
 *
 * In addition, as a special exception, the copyright holders of this
 * program give permission to link the code of its release with the
 * OpenSSL project's "OpenSSL" library (or with modified versions of it
 * that use the same license as the "OpenSSL" library), and distribute
 * the linked executables. You must obey the GNU General Public License
 * in all respects for all of the code used other than "OpenSSL". If you
 * modify file(s) with this exception, you may extend this exception to
 * your version of the file(s), but you are not obligated to do so. If
 * you do not wish to do so, delete this exception statement from your
 * version. If you delete this exception statement from all source files
 * in the program, then also delete it here.
 * 
 * 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/>.
 **/


#pragma once

#include "IStorageArea.h"
#include "StorageAccessor.h"
#include "../Compression/ZlibCompressor.h"

namespace Orthanc
{
  class CompressedFileStorageAccessor : public StorageAccessor
  {
  private:
    IStorageArea* storage_;
    ZlibCompressor zlib_;
    CompressionType compressionType_;

  protected:
    virtual FileInfo WriteInternal(const void* data,
                                   size_t size,
                                   FileContentType type);

  public: 
    CompressedFileStorageAccessor();

    CompressedFileStorageAccessor(IStorageArea& storage);

    void SetStorageArea(IStorageArea& storage)
    {
      storage_ = &storage;
    }

    bool HasStorageArea() const
    {
      return storage_ != NULL;
    }

    IStorageArea& GetStorageArea();

    void SetCompressionForNextOperations(CompressionType compression)
    {
      compressionType_ = compression;
    }
    
    CompressionType GetCompressionForNextOperations()
    {
      return compressionType_;
    }

    virtual void Read(std::string& content,
                      const std::string& uuid,
                      FileContentType type);

    virtual HttpFileSender* ConstructHttpFileSender(const std::string& uuid,
                                                    FileContentType type);

    virtual void Remove(const std::string& uuid,
                        FileContentType type);
  };
}