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

/***************************************************************************
 *   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_APEITEM_H
#define TAGLIB_APEITEM_H

#include "tbytevector.h"
#include "tstring.h"
#include "tstringlist.h"

namespace Strawberry_TagLib {
namespace TagLib {
namespace APE {

//! An implementation of APE-items

/*!
 * This class provides the features of items in the APEv2 standard.
 */
class TAGLIB_EXPORT Item {
 public:
  /*!
   * Enum of types an Item can have. The value of 3 is reserved.
   */
  enum ItemTypes {
    //! Item contains text information coded in UTF-8
    Text = 0,
    //! Item contains binary information
    Binary = 1,
    //! Item is a locator of external stored information
    Locator = 2
  };
  /*!
   * Constructs an empty item.
   */
  explicit Item();

  /*!
   * Constructs a text item with \a key and \a values.
   */
  explicit Item(const String &key, const String &values);

  /*!
   * Constructs a text item with \a key and \a values.
   */
  explicit Item(const String &key, const StringList &values);

  /*!
   * Constructs an item with \a key and \a value.
   * If \a binary is true a Binary item will be created, otherwise \a value will be interpreted as text
   */
  explicit Item(const String &key, const ByteVector &value, bool binary);

  /*!
   * Construct an item as a copy of \a item.
   */
  Item(const Item &item);

  /*!
   * Destroys the item.
   */
  virtual ~Item();

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

  /*!
   * Exchanges the content of this item by the content of \a item.
   */
  void swap(Item &item);

  /*!
   * Returns the key.
   */
  String key() const;

  /*!
   * Returns the binary value.
   * If the item type is not \a Binary, always returns an empty ByteVector.
   */
  ByteVector binaryData() const;

  /*!
   * Set the binary value to \a value
   * The item's type will also be set to \a Binary
   */
  void setBinaryData(const ByteVector &value);

  /*!
   * Sets the key for the item to \a key.
   */
  void setKey(const String &key);

  /*!
   * Sets the text value of the item to \a value and clears any previous contents.
   *
   * \see toString()
   */
  void setValue(const String &value);

  /*!
   * Sets the text value of the item to the list of values in \a value and clears any previous contents.
   *
   * \see toStringList()
   */
  void setValues(const StringList &values);

  /*!
   * Appends \a value to create (or extend) the current list of text values.
   *
   * \see toString()
   */
  void appendValue(const String &value);

  /*!
   * Appends \a values to extend the current list of text values.
   *
   * \see toStringList()
   */
  void appendValues(const StringList &values);

  /*!
   * Returns the size of the full item.
   */
  int size() const;

  /*!
   * Returns the value as a single string.  In case of multiple strings, the first is returned.
   * If the data type is not \a Text, always returns an empty String.
   */
  String toString() const;

  /*!
   * Returns the list of text values.  If the data type is not \a Text, always returns an empty StringList.
   */
  StringList values() const;

  /*!
   * Render the item to a ByteVector.
   */
  ByteVector render() const;

  /*!
   * Parse the item from the ByteVector \a data.
   */
  void parse(const ByteVector &data);

  /*!
   * Set the item to read-only.
   */
  void setReadOnly(bool readOnly);

  /*!
   * Return true if the item is read-only.
   */
  bool isReadOnly() const;

  /*!
   * Sets the type of the item to \a type.
   *
   * \see ItemTypes
   */
  void setType(ItemTypes type);

  /*!
   * Returns the type of the item.
   */
  ItemTypes type() const;

  /*!
   * Returns if the item has any real content.
   */
  bool isEmpty() const;

 private:
  class ItemPrivate;
  ItemPrivate *d;
};
}  // namespace APE
}  // namespace TagLib
}  // namespace Strawberry_TagLib

#endif