// Copyright (c) 2020-2022 The Bitcoin Core developers

// Distributed under the MIT software license, see the accompanying

// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#ifndef BITCOIN_DEPLOYMENTSTATUS_H

#define BITCOIN_DEPLOYMENTSTATUS_H

#include <chain.h>

#include <versionbits.h>

#include <limits>

/** Determine if a deployment is active for the next block */

inline bool DeploymentActiveAfter(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::BuriedDeployment dep, [[maybe_unused]] VersionBitsCache& versionbitscache)

{

    assert(Consensus::ValidDeployment(dep));

    return (pindexPrev == nullptr ? 0 : pindexPrev->nHeight + 1) >= params.DeploymentHeight(dep);

}

inline bool DeploymentActiveAfter(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos dep, VersionBitsCache& versionbitscache)

{

    assert(Consensus::ValidDeployment(dep));

    return ThresholdState::ACTIVE == versionbitscache.State(pindexPrev, params, dep);

}

/** Determine if a deployment is active for this block */

inline bool DeploymentActiveAt(const CBlockIndex& index, const Consensus::Params& params, Consensus::BuriedDeployment dep, [[maybe_unused]] VersionBitsCache& versionbitscache)

{

    assert(Consensus::ValidDeployment(dep));

    return index.nHeight >= params.DeploymentHeight(dep);

}

inline bool DeploymentActiveAt(const CBlockIndex& index, const Consensus::Params& params, Consensus::DeploymentPos dep, VersionBitsCache& versionbitscache)

{

    assert(Consensus::ValidDeployment(dep));

    return DeploymentActiveAfter(index.pprev, params, dep, versionbitscache);

}

/** Determine if a deployment is enabled (can ever be active) */

inline bool DeploymentEnabled(const Consensus::Params& params, Consensus::BuriedDeployment dep)

{

    assert(Consensus::ValidDeployment(dep));

    return params.DeploymentHeight(dep) != std::numeric_limits<int>::max();

}

inline bool DeploymentEnabled(const Consensus::Params& params, Consensus::DeploymentPos dep)

{

    assert(Consensus::ValidDeployment(dep));

    return params.vDeployments[dep].nStartTime != Consensus::BIP9Deployment::NEVER_ACTIVE;

}

#endif // BITCOIN_DEPLOYMENTSTATUS_H