/*
 * Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _CALLBACK_H
#define _CALLBACK_H

#include <ace/Future.h>
#include <ace/Future_Set.h>
#include "QueryResult.h"

typedef ACE_Future<QueryResult> QueryResultFuture;

/*! A simple template using ACE_Future to manage callbacks from the thread and object that
    issued the request. <ParamType> is variable type of parameter that is used as parameter
    for the callback function.
*/
template <typename ParamType>
class QueryCallback
{
    public:
        QueryCallback() {}

        void SetFutureResult(QueryResultFuture value)
        {
            result = value;
        }

        QueryResultFuture GetFutureResult()
        {
            return result;
        }

        int IsReady()
        {
            return result.ready();
        }

        void GetResult(QueryResult& res)
        {
            result.get(res);
        }

        void FreeResult()
        {
            result.cancel();
        }

        void SetParam(ParamType value)
        {
            param = value;
        }

        ParamType GetParam()
        {
            return param;
        }

    private:
        QueryResultFuture result;
        ParamType param;
};

template <typename ParamType1, typename ParamType2>
class QueryCallback_2
{
    public:
        QueryCallback_2() {}

        void SetFutureResult(QueryResultFuture value)
        {
            result = value;
        }

        QueryResultFuture GetFutureResult()
        {
            return result;
        }

        int IsReady()
        {
            return result.ready();
        }

        void GetResult(QueryResult& res)
        {
            result.get(res);
        }

        void FreeResult()
        {
            result.cancel();
        }

        void SetFirstParam(ParamType1 value)
        {
            param_1 = value;
        }

        void SetSecondParam(ParamType2 value)
        {
            param_2 = value;
        }

        ParamType1 GetFirstParam()
        {
            return param_1;
        }

        ParamType2 GetSecondParam()
        {
            return param_2;
        }

    private:
        QueryResultFuture result;
        ParamType1 param_1;
        ParamType2 param_2;
};

#endif