/*  -*- mode: C++; c-file-style: "gnu" -*-
 *
 *  Copyright (c) 2001-2003 Carsten Pfeiffer <pfeiffer@kde.org>
 *  Copyright (c) 2003 Zack Rusin <zack@kde.org>
 *
 *  KMail is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License, version 2, as
 *  published by the Free Software Foundation.
 *
 *  KMail 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
 *  General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *  In addition, as a special exception, the copyright holders give
 *  permission to link the code of this program with any edition of
 *  the Qt library by Trolltech AS, Norway (or with modified versions
 *  of Qt that use the same license as Qt), and distribute linked
 *  combinations including the two.  You must obey the GNU General
 *  Public License in all respects for all of the code used other than
 *  Qt.  If you modify this file, you may extend this exception to
 *  your version of the file, but you are not obligated to do so.  If
 *  you do not wish to do so, delete this exception statement from
 *  your version.
 */
#include "recentaddresses.h"
#include "libemailfunctions/email.h"

#include <kstaticdeleter.h>
#include <kconfig.h>
#include <kglobal.h>

#include <kdebug.h>
#include <klocale.h>
#include <keditlistbox.h>


#include <qlayout.h>

using namespace KRecentAddress;

static KStaticDeleter<RecentAddresses> sd;

RecentAddresses * RecentAddresses::s_self = 0;

RecentAddresses * RecentAddresses::self( KConfig *config)
{
    if ( !s_self )
        sd.setObject( s_self, new RecentAddresses(config) );
    return s_self;
}

RecentAddresses::RecentAddresses(KConfig * config)
{
  if ( !config )
    load( KGlobal::config() );
  else
    load( config );
}

RecentAddresses::~RecentAddresses()
{
    // if you want this destructor to get called, use a KStaticDeleter
    // on s_self
}

void RecentAddresses::load( KConfig *config )
{
    QStringList addresses;
    QString name;
    QString email;

    m_addresseeList.clear();
    KConfigGroupSaver cs( config, "General" );
    m_maxCount = config->readNumEntry( "Maximum Recent Addresses", 40 );
    addresses = config->readListEntry( "Recent Addresses" );
    for ( QStringList::Iterator it = addresses.begin(); it != addresses.end(); ++it ) {
        KABC::Addressee::parseEmailAddress( *it, name, email );
        if ( !email.isEmpty() ) {
            KABC::Addressee addr;
            addr.setNameFromString( name );
            addr.insertEmail( email, true );
            m_addresseeList.append( addr );
        }
    }

    adjustSize();
}

void RecentAddresses::save( KConfig *config )
{
    KConfigGroupSaver cs( config, "General" );
    config->writeEntry( "Recent Addresses", addresses() );
}

void RecentAddresses::add( const QString& entry )
{
  if ( !entry.isEmpty() && m_maxCount > 0 ) {
    QStringList list = KPIM::splitEmailAddrList( entry );
    for( QStringList::const_iterator e_it = list.begin(); e_it != list.end(); ++e_it ) {
      KPIM::EmailParseResult errorCode = KPIM::isValidEmailAddress( *e_it );
      if ( errorCode != KPIM::AddressOk ) 
        continue;
      QString email;
      QString fullName;
      KABC::Addressee addr;

      KABC::Addressee::parseEmailAddress( *e_it, fullName, email );

      for ( KABC::Addressee::List::Iterator it = m_addresseeList.begin();
          it != m_addresseeList.end(); ++it )
      {
        if ( email == (*it).preferredEmail() ) {
          //already inside, remove it here and add it later at pos==1
          m_addresseeList.remove( it );
          break;
        }
      }
      addr.setNameFromString( fullName );
      addr.insertEmail( email, true );
      m_addresseeList.prepend( addr );
      adjustSize();
    }
  }
}

void RecentAddresses::setMaxCount( int count )
{
    m_maxCount = count;
    adjustSize();
}

void RecentAddresses::adjustSize()
{
    while ( m_addresseeList.count() > m_maxCount )
        m_addresseeList.remove( m_addresseeList.fromLast() );
}

void RecentAddresses::clear()
{
    m_addresseeList.clear();
    adjustSize();
}

QStringList RecentAddresses::addresses() const
{
    QStringList addresses;
    for ( KABC::Addressee::List::ConstIterator it = m_addresseeList.begin();
          it != m_addresseeList.end(); ++it )
    {
        addresses.append( (*it).fullEmail() );
    }
    return addresses;
}

RecentAddressDialog::RecentAddressDialog( QWidget *parent, const char *name )
  : KDialogBase( Plain, i18n( "Edit Recent Addresses" ), Ok | Cancel, Ok,
                 parent, name, true )
{
  QWidget *page = plainPage();
  QVBoxLayout *layout = new QVBoxLayout( page, 0, spacingHint() );

  mEditor = new KEditListBox( i18n( "Recent Addresses" ), page, "", false,
                              KEditListBox::Add | KEditListBox::Remove );
  layout->addWidget( mEditor );
}

void RecentAddressDialog::setAddresses( const QStringList &addrs )
{
  mEditor->clear();
  mEditor->insertStringList( addrs );
}

QStringList RecentAddressDialog::addresses() const
{
  return mEditor->items();
}