/*
    This file is part of the KContacts framework.
    Copyright (c) 2002 Tobias Koenig <tokoe@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#ifndef KCONTACTS_SOUND_H
#define KCONTACTS_SOUND_H

#include "kcontacts_export.h"
#include <QString>
#include <QSharedDataPointer>

namespace KContacts {
/** @short Class that holds a Sound clip for a contact.
 *
 *  The sound can be played doing something like this:
 *
 *  \code
 *    KTempFile tmp;
 *    if ( sound.isIntern() ) {
 *      tmp.file()->write( sound.data() );
 *      tmp.close();
 *      KAudioPlayer::play( tmp.name() );
 *    } else if( !sound.url().isEmpty() ) {
 *      QString tmpFile;
 *      if ( !KIO::NetAccess::download( QUrl( themeURL.url() ), tmpFile, 0 ) ) {
 *        KMessageBox::error( 0,
 *                            KIO::NetAccess::lastErrorString(),
 *                            i18n( "Failed to download sound file" ),
 *                            KMessageBox::Notify
 *                          );
 *        return;
 *      }
 *      KAudioPlayer::play( tmpFile );
 *    }
 *  \endcode
 *
 *  Unfortunately, KAudioPlayer::play is ASync, so to delete the temporary file
 *  the best you can really do is set a timer.
 *
 */
class KCONTACTS_EXPORT Sound
{
    friend KCONTACTS_EXPORT QDataStream &operator<<(QDataStream &, const Sound &);
    friend KCONTACTS_EXPORT QDataStream &operator>>(QDataStream &, Sound &);

public:

    /**
     * Creates an empty sound object.
     */
    Sound();

    /**
     * Creates a sound object for the given url.
     *
     * @param url A url that describes the position of the sound file.
     */
    Sound(const QString &url);

    /**
     * Creates a sound object for the given data.
     *
     * @param data The raw data of the sound.
     */
    Sound(const QByteArray &data);

    /**
     * Copy constructor.
     */
    Sound(const Sound &other);

    /**
     * Destroys the sound object.
     */
    ~Sound();

    typedef QVector<Sound> List;
    /**
     * Assignment operator.
     *
     * @param other The sound object to assign to @c this
     */
    Sound &operator=(const Sound &other);

    /**
     * Equality operator.
     *
     * @param other The object to compare with
     *
     * @return @c true if the two objects are equal, otherwise @c false
     */
    Q_REQUIRED_RESULT bool operator==(const Sound &other) const;

    /**
     * Not-Equal operator.
     *
     * @param other The object to compare with
     *
     * @return @c true if the two objects are not equal, otherwise @c false
     */
    Q_REQUIRED_RESULT bool operator!=(const Sound &other) const;

    /**
     * Sets a URL for the location of the sound file. When using this
     * function, isIntern() will return 'false' until you use
     * setData().
     *
     * @param url  The location URL of the sound file.
     */
    void setUrl(const QString &url);

    /**
     * Returns true, if the sound object is empty.
     */
    Q_REQUIRED_RESULT bool isEmpty() const;

    /**
     * Sets the raw data of the sound. When using this function,
     * isIntern() will return 'true' until you use setUrl().
     *
     * @param data  The raw data of the sound.
     */
    void setData(const QByteArray &data);

    /**
     * Returns whether the sound is described by a URL (extern) or
     * by the raw data (intern).
     * When this method returns 'true' you can use data() to
     * get the raw data. Otherwise you can request the URL of this
     * sound by url() and load the raw data from that location.
     */
    Q_REQUIRED_RESULT bool isIntern() const;

    /**
     * Returns the location URL of this sound.
     */
    Q_REQUIRED_RESULT QString url() const;

    /**
     * Returns the raw data of this sound.
     */
    Q_REQUIRED_RESULT QByteArray data() const;

    /**
     * Returns string representation of the sound.
     */
    Q_REQUIRED_RESULT QString toString() const;

private:
    class Private;
    QSharedDataPointer<Private> d;
};

/**
 * Serializes the @p sound object into the @p stream.
 */
KCONTACTS_EXPORT QDataStream &operator<<(QDataStream &stream, const Sound &sound);

/**
 * Initializes the @p sound object from the @p stream.
 */
KCONTACTS_EXPORT QDataStream &operator>>(QDataStream &stream, Sound &sound);
}
Q_DECLARE_TYPEINFO(KContacts::Sound, Q_MOVABLE_TYPE);
#endif
