#include "amount.h"
#include "tinyformat.h"

const std::string CURRENCY_UNIT = "NRG";

CFeeRate::CFeeRate(const CAmount& nFeePaid, size_t nSize)
{
    if (nSize > 0)
        nSatoshisPerK = nFeePaid*1000/nSize;
    else
        nSatoshisPerK = 0;
}

CAmount CFeeRate::GetFee(size_t nSize) const
{
    CAmount nFee = nSatoshisPerK*nSize / 1000;

    if (nFee == 0 && nSatoshisPerK > 0)
        nFee = nSatoshisPerK;

    return nFee;
}

std::string CFeeRate::ToString() const
{
    return strprintf("%d.%08d %s/kB", nSatoshisPerK / COIN, nSatoshisPerK % COIN, CURRENCY_UNIT);
}