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// Copyright (c) 2021 The Dogecoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <boost/random/uniform_int.hpp>
#include "policy/policy.h"
#include "arith_uint256.h"
#include "dogecoin.h"
#include "txmempool.h"
#include "util.h"
#include "validation.h"
#include "dogecoin-fees.h"
#include "amount.h"
#ifdef ENABLE_WALLET
#include "wallet/wallet.h"
#endif
#ifdef ENABLE_WALLET
//mlumin 5/2021: walletfees, all attached to GetDogecoinWalletFeeRate which is just the newly exposed ::minWalletTxFee
CAmount GetDogecoinWalletFee(size_t nBytes_)
{
//mlumin: super simple fee calc for dogecoin
CAmount nFee=GetDogecoinWalletFeeRate().GetFee(nBytes_);
}
//mlumin 5/2021: Establish a wallet rate of n koinu per kb.
//mlumin: this is somewhat redundant to the globally exposed ::minWalletTxFee, but honestly I'd like to have both the rate and amount (with size) here
CFeeRate GetDogecoinWalletFeeRate()
{
//mlumin 5/2021: currently 1x COIN or 1 dogecoin or 100,000,000 koinu
return ::minWalletTxFeeRate;
}
#endif
CAmount GetDogecoinMinRelayFee(const CTransaction& tx, unsigned int nBytes, bool fAllowFree)
{
{
LOCK(mempool.cs);
uint256 hash = tx.GetHash();
double dPriorityDelta = 0;
CAmount nFeeDelta = 0;
mempool.ApplyDeltas(hash, dPriorityDelta, nFeeDelta);
if (dPriorityDelta > 0 || nFeeDelta > 0)
return 0;
}
CAmount nMinFee = ::minRelayTxFeeRate.GetRelayFee(nBytes);
nMinFee += GetDogecoinDustFee(tx.vout, ::minRelayTxFeeRate);
if (fAllowFree)
{
// There is a free transaction area in blocks created by most miners,
// * If we are relaying we allow transactions up to DEFAULT_BLOCK_PRIORITY_SIZE - 1000
// to be considered to fall into this category. We don't want to encourage sending
// multiple transactions instead of one big transaction to avoid fees.
if (nBytes < (DEFAULT_BLOCK_PRIORITY_SIZE - 1000))
nMinFee = 0;
}
if (!MoneyRange(nMinFee))
nMinFee = MAX_MONEY;
return nMinFee;
}
CAmount GetDogecoinDustFee(const std::vector<CTxOut> &vout, CFeeRate &baseFeeRate) {
CAmount nFee = 0;
// To limit dust spam, add base fee for each output less than a COIN
BOOST_FOREACH(const CTxOut& txout, vout)
if (txout.IsDust(::minRelayTxFeeRate))
nFee += baseFeeRate.GetFeePerK();
return nFee;
}
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