// Copyright (c) 2026 The Limenka developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <node/blukecoin.h>

#include <arith_uint256.h>
#include <consensus/params.h>
#include <logging.h>
#include <pow.h>
#include <primitives/block.h>

namespace node {

std::optional<bool> BlukecoinManager::HeaderLooksBlake2b(const CBlockHeader& header, const Consensus::Params& params)
{
    auto target{DeriveTarget(header.nBits, params.powLimit)};
    if (!target) return std::nullopt; // nBits outside mainnet range: a low-work testnet fork
    return UintToArith256(header.GetHash()) > *target;
}

void BlukecoinManager::NoteDetected(const CService& addr)
{
    LOCK(m_mutex);
    if (m_known.insert(addr).second) {
        LogPrintf("Blukecoin (bitcoin-blake2b) node detected: %s\n", addr.ToStringAddrPort());
    }
}

bool BlukecoinManager::IsKnown(const CService& addr) const
{
    LOCK(m_mutex);
    return m_known.count(addr) != 0;
}

std::vector<CService> BlukecoinManager::GetKnown() const
{
    LOCK(m_mutex);
    return {m_known.begin(), m_known.end()};
}

} // namespace node