/*
 *    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
 */

/*
 *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
 */

#pragma once

#include "subscriptions.h"

#include <string>
#include <vector>

namespace STG
{

class Admin;
struct Tariff;
struct TariffData;

class Tariffs
{
    public:
        virtual ~Tariffs() = default;

        virtual int ReadTariffs() = 0;
        virtual const Tariff* FindByName(const std::string& name) const = 0;
        virtual const Tariff* GetNoTariff() const = 0;
        virtual int Del(const std::string& name, const Admin* admin) = 0;
        virtual int Add(const std::string& name, const Admin* admin) = 0;
        virtual int Chg(const TariffData& td, const Admin* admin) = 0;

        template <typename F>
        auto onAdd(F&& f) { return m_onAddCallbacks.add(std::forward<F>(f)); }
        template <typename F>
        auto onDel(F&& f) { return m_onDelCallbacks.add(std::forward<F>(f)); }

        virtual void GetTariffsData(std::vector<TariffData>* tdl) const = 0;

        virtual size_t Count() const = 0;

        virtual const std::string& GetStrError() const = 0;

    protected:
        Subscriptions<TariffData> m_onAddCallbacks;
        Subscriptions<TariffData> m_onDelCallbacks;
};

}