/*
 *    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>
 */

#ifndef TARIFF_H
#define TARIFF_H

#include "os_int.h"

#include <string>
#include <cstring>
#include <ctime>
#include <istream>

struct TARIFF_DATA;

class TARIFF {
public:
    enum PERIOD { DAY = 0, MONTH };

    enum TRAFF_TYPE { TRAFF_UP = 0, TRAFF_DOWN, TRAFF_UP_DOWN, TRAFF_MAX };

    static std::string PeriodToString(PERIOD period);
    static PERIOD StringToPeriod(const std::string& value);

    static std::string TraffTypeToString(TRAFF_TYPE type);
    static TRAFF_TYPE StringToTraffType(const std::string& value);
    static TRAFF_TYPE IntToTraffType(int value);

    virtual ~TARIFF() {}
    virtual double  GetPriceWithTraffType(uint64_t up,
                                          uint64_t down,
                                          int dir,
                                          time_t t) const = 0;
    virtual double  GetFreeMb() const = 0;
    virtual double  GetPassiveCost() const = 0;
    virtual double  GetFee() const = 0;
    virtual double  GetFree() const = 0;
    virtual PERIOD  GetPeriod() const = 0;

    virtual const   std::string & GetName() const = 0;
    virtual void    SetName(const std::string & name) = 0;

    virtual int     GetTraffType() const = 0;
    virtual int64_t GetTraffByType(uint64_t up, uint64_t down) const = 0;
    virtual int     GetThreshold(int dir) const = 0;
    virtual const TARIFF_DATA & GetTariffData() const = 0;
};

inline
std::string TARIFF::PeriodToString(TARIFF::PERIOD period)
{
switch (period)
    {
    case DAY: return "day";
    case MONTH: return "month";
    }
return "month"; // Classic behaviour.
}

inline
TARIFF::PERIOD TARIFF::StringToPeriod(const std::string& value)
{
if (strcasecmp(value.c_str(), "day") == 0)
    return DAY;
return MONTH; // Classic behaviour.
}

inline
std::string TARIFF::TraffTypeToString(TARIFF::TRAFF_TYPE type)
{
switch (type)
    {
    case TRAFF_UP: return "up";
    case TRAFF_DOWN: return "down";
    case TRAFF_UP_DOWN: return "up+down";
    case TRAFF_MAX: return "max";
    }
return "up+down";
}

inline
TARIFF::TRAFF_TYPE TARIFF::StringToTraffType(const std::string& value)
{
if (strcasecmp(value.c_str(), "up") == 0)
    return TRAFF_UP;
if (strcasecmp(value.c_str(), "down") == 0)
    return TRAFF_DOWN;
if (strcasecmp(value.c_str(), "up+down") == 0)
    return TRAFF_UP_DOWN;
if (strcasecmp(value.c_str(), "max") == 0)
    return TRAFF_MAX;
return TRAFF_UP_DOWN;
}

inline
std::istream & operator>>(std::istream & stream, TARIFF::TRAFF_TYPE & traffType)
{
    unsigned val;
    stream >> val;
    traffType = static_cast<TARIFF::TRAFF_TYPE>(val);
    return stream;
}

inline
TARIFF::TRAFF_TYPE TARIFF::IntToTraffType(int value)
{
    if (value < 0 || value > TRAFF_MAX)
        return TRAFF_UP_DOWN;
    return static_cast<TRAFF_TYPE>(value);
}

#endif