/*
    This file is part of libkabc.
    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 KABC_VCARDCONVERTER_H
#define KABC_VCARDCONVERTER_H

#include "kabc_export.h"
#include "addressee.h"
#include <QtCore/QString>

namespace KABC {

/**
  @short Class to converting contact objects into vCard format and vice versa.

  This class implements reading and writing of contact using from/to the
  vCard format. Currently vCard version 2.1 and 3.0 is supported.

  Example:

  \code

  QFile file( "myfile.vcf" );
  file.open( QIODevice::ReadOnly );

  QByteArray data = file.readAll();

  VCardConverter converter;
  Addressee::List list = converter.parseVCards( data );

  // print formatted name of first contact
  qDebug( "name=%s", list[ 0 ].formattedName().toLatin1() );

  \endcode
*/
class KABC_EXPORT VCardConverter
{
  public:

    /**
      @li v2_1 - VCard format version 2.1
      @li v3_0 - VCard format version 3.0
     */
    enum Version {
      v2_1,
      v3_0
    };

    /**
      Constructor.
     */
    VCardConverter();

    /**
      Destructor.
     */
    ~VCardConverter();

    /**
      Creates a string in vCard format which contains the given
      contact.

      @param addr The contact object
      @param version The version of the generated vCard format
     */
    QByteArray createVCard( const Addressee &addr, Version version = v3_0 ) const;

    /**
      Creates a string in vCard format which contains the given
      list of contact.

      @param list The list of contact objects
      @param version The version of the generated vCard format
     */
    // FIXME: Add error handling
    QByteArray createVCards( Addressee::List list, Version version = v3_0 ) const;

    // FIXME: Add "createVCards( AddressBook * )"

    /**
      Parses a string in vCard format and returns the first contact.
     */
    Addressee parseVCard( const QByteArray &vcard ) const;

    /**
      Parses a string in vCard format and returns a list of contact objects.
     */
    // FIXME: Add error handling
    Addressee::List parseVCards( const QByteArray &vcard ) const;

  private:
    class VCardConverterPrivate;
    VCardConverterPrivate *const d;
};

/**
    Helper functions
  */

/**
  * Converts a QDateTime to a date string as it is used in VCard and LDIF files.
  * The return value is in the form "yyyyMMddThhmmssZ" (e.g. "20031201T120000Z")
  * @param dateTime date and time to be converted
  */
KABC_EXPORT QString dateToVCardString( const QDateTime &dateTime );

/**
  * Converts a QDate to a short date string as it is used in VCard and LDIF files.
  * The return value is in the form "yyyyMMdd" (e.g. "20031201")
  * @param date date to be converted
  */
KABC_EXPORT QString dateToVCardString( const QDate &date );

/**
  * Converts a date string as it is used in VCard and LDIF files to a QDateTime value.
  * If the date string does not contain a time value, it will be returned as 00:00:00.
  * (e.g. "20031201T120000" will return a QDateTime for 2003-12-01 at 12:00)
  * @param dateString string representing the date and time.
  */
KABC_EXPORT QDateTime VCardStringToDate( const QString &dateString );

}
#endif
