/***************************************************************************
    copyright            : (C) 2010 by Alex Novichkov
    email                : novichko@atnet.ru

    copyright            : (C) 2006 by Lukáš Lalinský
    email                : lalinsky@gmail.com
                           (original WavPack implementation)

    copyright            : (C) 2004 by Allan Sandfeld Jensen
    email                : kde@carewolf.org
                           (original MPC implementation)
 ***************************************************************************/

/***************************************************************************
 *   This library is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU Lesser General Public License version   *
 *   2.1 as published by the Free Software Foundation.                     *
 *                                                                         *
 *   This library 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     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the Free Software   *
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA         *
 *   02110-1301  USA                                                       *
 *                                                                         *
 *   Alternatively, this file is available under the Mozilla Public        *
 *   License Version 1.1.  You may obtain a copy of the License at         *
 *   http://www.mozilla.org/MPL/                                           *
 ***************************************************************************/

#ifndef TAGLIB_APEFILE_H
#define TAGLIB_APEFILE_H

#include "tfile.h"
#include "taglib_export.h"
#include "apeproperties.h"

namespace Strawberry_TagLib {
namespace TagLib {

class Tag;

namespace ID3v1 {
class Tag;
}
namespace APE {
class Tag;
}

//! An implementation of APE metadata

/*!
 * This is implementation of APE metadata.
 *
 * This supports ID3v1 and APE (v1 and v2) style comments as well as reading stream properties from the file.
 *
 */

namespace APE {

//! An implementation of TagLib::File with APE specific methods

/*!
 * This implements and provides an interface for APE files to the
 * TagLib::Tag and TagLib::AudioProperties interfaces by way of implementing
 * the abstract TagLib::File API as well as providing some additional information specific to APE files.
 *
 */

class TAGLIB_EXPORT File : public Strawberry_TagLib::TagLib::File {
 public:
  /*!
   * This set of flags is used for various operations and is suitable for being OR-ed together.
   */
  enum TagTypes {
    //! Empty set.  Matches no tag types.
    NoTags = 0x0000,
    //! Matches ID3v1 tags.
    ID3v1 = 0x0001,
    //! Matches APE tags.
    APE = 0x0002,
    //! Matches all tag types.
    AllTags = 0xffff
  };

  /*!
   * Constructs an APE file from \a file.
   * If \a readProperties is true the file's audio properties will also be read.
   *
   * \note In the current implementation, \a propertiesStyle is ignored.
   */
  explicit File(FileName file, bool readProperties = true, AudioProperties::ReadStyle propertiesStyle = AudioProperties::Average);

  /*!
   * Constructs an APE file from \a stream.
   * If \a readProperties is true the file's audio properties will also be read.
   *
   * \note TagLib will *not* take ownership of the stream, the caller is responsible for deleting it after the File object.
   *
   * \note In the current implementation, \a propertiesStyle is ignored.
   */
  explicit File(IOStream *stream, bool readProperties = true, AudioProperties::ReadStyle propertiesStyle = AudioProperties::Average);

  /*!
   * Destroys this instance of the File.
   */
  ~File() override;

  /*!
   * Returns the Tag for this file.  This will be an APE tag, an ID3v1 tag or a combination of the two.
   */
  Strawberry_TagLib::TagLib::Tag *tag() const override;

  /*!
   * Implements the unified property interface -- import function.
   * Creates an APEv2 tag if necessary.
   * A potentially existing ID3v1 tag will be updated as well.
   */
  PropertyMap setProperties(const PropertyMap&) override;

  /*!
   * Returns the APE::AudioProperties for this file.
   * If no audio properties were read then this will return a null pointer.
   */
  AudioProperties *audioProperties() const override;

  /*!
   * Saves the file.
   *
   * \note According to the official Monkey's Audio SDK, an APE file
   * can only have either ID3V1 or APE tags, so a parameter is used here.
   */
  bool save() override;

  /*!
   * Returns a pointer to the ID3v1 tag of the file.
   *
   * If \a create is false (the default) this may return a null pointer if there is no valid ID3v1 tag.
   * If \a create is true it will create an ID3v1 tag if one does not exist and returns a valid pointer.
   *
   * \note This may return a valid pointer regardless of whether or not the file on disk has an ID3v1 tag.
   * Use hasID3v1Tag() to check if the file on disk actually has an ID3v1 tag.
   *
   * \note The Tag <b>is still</b> owned by the MPEG::File and should not be deleted by the user.
   * It will be deleted when the file (object) is destroyed.
   *
   * \see hasID3v1Tag()
   */
  ID3v1::Tag *ID3v1Tag(bool create = false);

  /*!
   * Returns a pointer to the APE tag of the file.
   *
   * If \a create is false (the default) this may return a null pointer if there is no valid APE tag.
   * If \a create is true it will create an APE tag if one does not exist and returns a valid pointer.
   *
   * \note This may return a valid pointer regardless of whether or not the file on disk has an APE tag.
   * Use hasAPETag() to check if the file on disk actually has an APE tag.
   *
   * \note The Tag <b>is still</b> owned by the MPEG::File and should not be deleted by the user.
   * It will be deleted when the file (object) is destroyed.
   *
   * \see hasAPETag()
   */
  APE::Tag *APETag(bool create = false);

  /*!
   * This will remove the tags that match the OR-ed together TagTypes from the file.
   * By default it removes all tags.
   *
   * \note This will also invalidate pointers to the tags as their memory will be freed.
   * \note In order to make the removal permanent save() still needs to be called
   */
  void strip(int tags = AllTags);

  /*!
   * Returns whether or not the file on disk actually has an APE tag.
   *
   * \see APETag()
   */
  bool hasAPETag() const;

  /*!
   * Returns whether or not the file on disk actually has an ID3v1 tag.
   *
   * \see ID3v1Tag()
   */
  bool hasID3v1Tag() const;

  /*!
   * Returns whether or not the given \a stream can be opened as an APE file.
   *
   * \note This method is designed to do a quick check.
   * The result may not necessarily be correct.
   */
  static bool isSupported(IOStream *stream);

 private:
  File(const File &);
  File &operator=(const File &);

  void read(bool readProperties);

  class FilePrivate;
  FilePrivate *d;
};
}  // namespace APE
}  // namespace TagLib
}  // namespace Strawberry_TagLib

#endif