/**************************************************************************
    copyright            : (C) 2005-2007 by Lukáš Lalinský
    email                : lalinsky@gmail.com
 **************************************************************************/

/***************************************************************************
 *   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_ASFATTRIBUTE_H
#define TAGLIB_ASFATTRIBUTE_H

#include "tstring.h"
#include "tbytevector.h"
#include "taglib_export.h"
#include "asfpicture.h"

namespace Strawberry_TagLib {
namespace TagLib {
namespace ASF {

class File;
class Picture;

class TAGLIB_EXPORT Attribute {
 public:
  /*!
   * Enum of types an Attribute can have.
   */
  enum AttributeTypes {
    UnicodeType = 0,
    BytesType = 1,
    BoolType = 2,
    DWordType = 3,
    QWordType = 4,
    WordType = 5,
    GuidType = 6
  };

  /*!
   * Constructs an empty attribute.
   */
  Attribute();

  /*!
   * Constructs an attribute with \a key and a UnicodeType \a value.
   */
  Attribute(const String &value);

  /*!
   * Constructs an attribute with \a key and a BytesType \a value.
   */
  Attribute(const ByteVector &value);

  /*!
   * Constructs an attribute with \a key and a Picture \a value.
   *
   * This attribute is compatible with the ID3 frame, APIC. The ID3 specification for the APIC frame stipulates that,
   * while there may be any number of APIC frames associated with a file,
   * only one may be of type 1 and only one may be of type 2.
   *
   * The specification also states that the description of the picture can be no longer than 64 characters, but can be empty.
   * WM/Picture attributes added with TagLib::ASF are not automatically validated to conform to ID3 specifications.
   * You must add code in your application to perform validations if you want to maintain complete compatibility with ID3.
   */
  Attribute(const Picture &value);

  /*!
   * Constructs an attribute with \a key and a DWordType \a value.
   */
  Attribute(unsigned int value);

  /*!
   * Constructs an attribute with \a key and a QWordType \a value.
   */
  Attribute(unsigned long long value);

  /*!
   * Constructs an attribute with \a key and a WordType \a value.
   */
  Attribute(unsigned short value);

  /*!
   * Constructs an attribute with \a key and a BoolType \a value.
   */
  Attribute(bool value);

  /*!
   * Construct an attribute as a copy of \a other.
   */
  Attribute(const Attribute &other);

  /*!
   * Copies the contents of \a other into this item.
   */
  Attribute &operator=(const Attribute &other);

  /*!
   * Exchanges the content of the Attribute by the content of \a other.
   */
  void swap(Attribute &other);

  /*!
   * Destroys the attribute.
   */
  virtual ~Attribute();

  /*!
   * Returns type of the value.
   */
  AttributeTypes type() const;

  /*!
   * Returns the BoolType \a value.
   */
  unsigned short toBool() const;

  /*!
   * Returns the WordType \a value.
   */
  unsigned short toUShort() const;

  /*!
   * Returns the DWordType \a value.
   */
  unsigned int toUInt() const;

  /*!
   * Returns the QWordType \a value.
   */
  unsigned long long toULongLong() const;

  /*!
   * Returns the UnicodeType \a value.
   */
  String toString() const;

  /*!
   * Returns the BytesType \a value.
   */
  ByteVector toByteVector() const;

  /*!
   * Returns the Picture \a value.
   */
  Picture toPicture() const;

  /*!
   * Returns the language number, or 0 is no stream number was set.
   */
  int language() const;

  /*!
   * Sets the language number.
   */
  void setLanguage(int value);

  /*!
   * Returns the stream number, or 0 is no stream number was set.
   */
  int stream() const;

  /*!
   * Sets the stream number.
   */
  void setStream(int value);

  //! Returns the size of the stored data
  int dataSize() const;

 private:
  friend class File;

  String parse(ASF::File &file, int kind = 0);
  ByteVector render(const String &name, int kind = 0) const;

  class AttributePrivate;
  AttributePrivate *d;
};
}  // namespace ASF
}  // namespace TagLib
}  // namespace Strawberry_TagLib

#endif