/*
  This file is part of libkldap.
  Copyright (c) 2004-2006 Szombathelyi György <gyurco@freemail.hu>

  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 KLDAP_LDAPSEARCH_H
#define KLDAP_LDAPSEARCH_H

#include <QtCore/QByteArray>
#include <QtCore/QList>
#include <QtCore/QObject>
#include <QtCore/QString>

#include "kldap_export.h"

#include "ldapconnection.h"
#include "ldapcontrol.h"
#include "ldapobject.h"
#include "ldapoperation.h"
#include "ldapserver.h"
#include "ldapurl.h"

namespace KLDAP {

/**
 * @brief
 * This class starts a search operation on a LDAP server and returns the
 * search values via a Qt signal.
 */
class KLDAP_EXPORT LdapSearch : public QObject
{
  Q_OBJECT

  public:
    /**
     * Constructs an LdapSearch object
     */
    LdapSearch();

    /**
     * Constructs an LdapConnection object with the given connection. If this
     * form of constructor used, then always this connection will be used
     * regardless of the LDAP Url or LdapServer object passed to search().
     * @param connection the connection used to construct LdapConnection object
     */
    explicit LdapSearch( LdapConnection &connection );

    virtual ~LdapSearch();

    /**
     * Sets the connection for this object to use for searches from now
     * onwards, regardless of the LDAP Url or LdapServer object passed to
     * search().
     */
    void setConnection( LdapConnection &connection );

    /**
     * Sets the client controls which will sent with each operation.
     */
    void setClientControls( const LdapControls &ctrls );

    /**
     * Sets the server controls which will sent with each operation.
     */
    void setServerControls( const LdapControls &ctrls );

    /**
     * Starts a search operation on the LDAP server @param server,
     * returning the attributes specified with @param attributes.
     * @param count means how many entries to list. If it's >0, then result()
     * will be emitted when the number of entries is reached, but with
     * isFinished() set to false.
     */
    bool search( const LdapServer &server,
                 const QStringList &attributes = QStringList(), int count = 0 );

    /**
     * Starts a search operation on the given LDAP URL.
     */
    bool search( const LdapUrl &url, int count = 0 );

    /**
     * Starts a search operation if the LdapConnection object already set
     * in the constructor.
     */
    bool search( const LdapDN &base,
                 LdapUrl::Scope scope = LdapUrl::Sub,
                 const QString &filter = QString(),
                 const QStringList &attributes = QStringList(),
                 int pagesize = 0, int count = 0 );

    /**
     * Continues the search (if you set count to non-zero in search(), and isFinished() is false)
     */
    void continueSearch();
    /**
     * Returns true if the search is finished else returns false.
     */
    bool isFinished();
    /**
     * Tries to abandon the search.
     */
    void abandon();

    /**
     * Returns the error code of the search operation (0 if no error).
     */
    int error() const;

    /**
     * Returns the error description of the search operation.
     */
    QString errorString() const;

  Q_SIGNALS:
    /**
     * Emitted for each result object.
     */
    void data( KLDAP::LdapSearch *search, const KLDAP::LdapObject &obj );

    /**
     * Emitted when the searching finished.
     */
    void result( KLDAP::LdapSearch *search );

  private:
    class Private;
    Private *const d;

    Q_PRIVATE_SLOT( d, void result() )

    Q_DISABLE_COPY( LdapSearch )
};

}

#endif