#include <fsfw/timemanager/CCSDSTime.h>
#include <fsfw/timemanager/TimeStamperIF.h>
#include "LocalDataPoolManager.h"
#include "LocalPoolObjectBase.h"
#include "LocalPoolDataSetBase.h"

#include "../housekeeping/HousekeepingPacketUpdate.h"
#include "../housekeeping/HousekeepingSetPacket.h"
#include "../housekeeping/AcceptsHkPacketsIF.h"

#include "../ipc/MutexFactory.h"
#include "../ipc/MutexHelper.h"
#include "../ipc/QueueFactory.h"
#include "../objectmanager/frameworkObjects.h"

#include <array>
#include <cmath>

object_id_t LocalDataPoolManager::defaultHkDestination =
        objects::PUS_SERVICE_3_HOUSEKEEPING;

LocalDataPoolManager::LocalDataPoolManager(HasLocalDataPoolIF* owner,
        MessageQueueIF* queueToUse, bool appendValidityBuffer):
                        appendValidityBuffer(appendValidityBuffer) {
    if(owner == nullptr) {
        sif::error << "LocalDataPoolManager::LocalDataPoolManager: "
                << "Invalid supplied owner!" << std::endl;
        return;
    }
    this->owner = owner;
    mutex = MutexFactory::instance()->createMutex();
    if(mutex == nullptr) {
        sif::error << "LocalDataPoolManager::LocalDataPoolManager: "
                << "Could not create mutex." << std::endl;
    }

    hkQueue = queueToUse;
}

LocalDataPoolManager::~LocalDataPoolManager() {}

ReturnValue_t LocalDataPoolManager::initialize(MessageQueueIF* queueToUse) {
    if(queueToUse == nullptr) {
        sif::error << "LocalDataPoolManager::initialize: "
                << std::hex << "0x" << owner->getObjectId() << ". Supplied "
                << "queue invalid!" << std::dec << std::endl;
    }
    hkQueue = queueToUse;

    ipcStore = objectManager->get<StorageManagerIF>(objects::IPC_STORE);
    if(ipcStore == nullptr) {
        sif::error << "LocalDataPoolManager::initialize: "
                << std::hex << "0x" << owner->getObjectId() << ": Could not "
                << "set IPC store." <<std::dec << std::endl;
        return HasReturnvaluesIF::RETURN_FAILED;
    }


    if(defaultHkDestination != objects::NO_OBJECT) {
        AcceptsHkPacketsIF* hkPacketReceiver =
                objectManager->get<AcceptsHkPacketsIF>(defaultHkDestination);
        if(hkPacketReceiver != nullptr) {
            hkDestinationId = hkPacketReceiver->getHkQueue();
        }
        else {
            sif::error << "LocalDataPoolManager::LocalDataPoolManager: "
                    << "Default HK destination object is invalid!" << std::endl;
            return HasReturnvaluesIF::RETURN_FAILED;
        }
    }

    return HasReturnvaluesIF::RETURN_OK;
}

ReturnValue_t LocalDataPoolManager::initializeAfterTaskCreation(
        uint8_t nonDiagInvlFactor) {
    setNonDiagnosticIntervalFactor(nonDiagInvlFactor);
    return initializeHousekeepingPoolEntriesOnce();
}

ReturnValue_t LocalDataPoolManager::initializeHousekeepingPoolEntriesOnce() {
    if(not mapInitialized) {
        ReturnValue_t result = owner->initializeLocalDataPool(localPoolMap,
                *this);
        if(result == HasReturnvaluesIF::RETURN_OK) {
            mapInitialized = true;
        }
        return result;
    }
    sif::warning << "HousekeepingManager: The map should only be initialized "
            << "once!" << std::endl;
    return HasReturnvaluesIF::RETURN_OK;
}

ReturnValue_t LocalDataPoolManager::performHkOperation() {
    ReturnValue_t status = HasReturnvaluesIF::RETURN_OK;
    for(auto& receiver: hkReceiversMap) {
        switch(receiver.reportingType) {
        case(ReportingType::PERIODIC): {
            if(receiver.dataType == DataType::LOCAL_POOL_VARIABLE) {
                // Periodic packets shall only be generated from datasets.
                continue;
            }
            performPeriodicHkGeneration(receiver);
            break;
        }
        case(ReportingType::UPDATE_HK): {
            handleHkUpdate(receiver, status);
            break;
        }
        case(ReportingType::UPDATE_NOTIFICATION): {
            handleNotificationUpdate(receiver, status);
            break;
        }
        case(ReportingType::UPDATE_SNAPSHOT): {
            handleNotificationSnapshot(receiver, status);
            break;
        }
        default:
            // This should never happen.
            return HasReturnvaluesIF::RETURN_FAILED;
        }
    }
    resetHkUpdateResetHelper();
    return status;
}

ReturnValue_t LocalDataPoolManager::handleHkUpdate(HkReceiver& receiver,
        ReturnValue_t& status) {
    if(receiver.dataType == DataType::LOCAL_POOL_VARIABLE) {
        // Update packets shall only be generated from datasets.
        return HasReturnvaluesIF::RETURN_FAILED;
    }
    LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(
            receiver.dataId.sid);
    if(dataSet->hasChanged()) {
        // prepare and send update notification
        ReturnValue_t result = generateHousekeepingPacket(
                receiver.dataId.sid, dataSet, true);
        if(result != HasReturnvaluesIF::RETURN_OK) {
            status = result;
        }
    }
    handleChangeResetLogic(receiver.dataType, receiver.dataId,
            dataSet);
    return HasReturnvaluesIF::RETURN_OK;
}

ReturnValue_t LocalDataPoolManager::handleNotificationUpdate(
        HkReceiver& receiver, ReturnValue_t& status) {
    MarkChangedIF* toReset = nullptr;
    if(receiver.dataType == DataType::LOCAL_POOL_VARIABLE) {
        LocalPoolObjectBase* poolObj = owner->getPoolObjectHandle(
                receiver.dataId.localPoolId);
        if(poolObj == nullptr) {
            return HasReturnvaluesIF::RETURN_FAILED;
        }
        if(poolObj->hasChanged()) {
            // prepare and send update notification.
            CommandMessage notification;
            HousekeepingMessage::setUpdateNotificationVariableCommand(
                    &notification, receiver.dataId.localPoolId);
            ReturnValue_t result = hkQueue->sendMessage(
                    receiver.destinationQueue, &notification);
            if(result != HasReturnvaluesIF::RETURN_OK) {
                status = result;
            }
            toReset = poolObj;
        }

    }
    else {
        LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(
                receiver.dataId.sid);
        if(dataSet == nullptr) {
            return HasReturnvaluesIF::RETURN_FAILED;
        }
        if(dataSet->hasChanged()) {
            // prepare and send update notification
            CommandMessage notification;
            HousekeepingMessage::setUpdateNotificationSetCommand(
                    &notification, receiver.dataId.sid);
            ReturnValue_t result = hkQueue->sendMessage(
                    receiver.destinationQueue, &notification);
            if(result != HasReturnvaluesIF::RETURN_OK) {
                status = result;
            }
            toReset = dataSet;
        }
    }
    if(toReset != nullptr) {
        handleChangeResetLogic(receiver.dataType,
                receiver.dataId, toReset);
    }
    return HasReturnvaluesIF::RETURN_OK;
}

ReturnValue_t LocalDataPoolManager::handleNotificationSnapshot(
        HkReceiver& receiver, ReturnValue_t& status) {
    MarkChangedIF* toReset = nullptr;
    // check whether data has changed and send messages in case it has.
    if(receiver.dataType == DataType::LOCAL_POOL_VARIABLE) {
        LocalPoolObjectBase* poolObj = owner->getPoolObjectHandle(
                receiver.dataId.localPoolId);
        if(poolObj == nullptr) {
            return HasReturnvaluesIF::RETURN_FAILED;
        }

        if (not poolObj->hasChanged()) {
            return HasReturnvaluesIF::RETURN_OK;
        }

        // prepare and send update snapshot.
        timeval now;
        Clock::getClock_timeval(&now);
        CCSDSTime::CDS_short cds;
        CCSDSTime::convertToCcsds(&cds, &now);
        HousekeepingPacketUpdate updatePacket(reinterpret_cast<uint8_t*>(&cds),
                sizeof(cds), owner->getPoolObjectHandle(
                receiver.dataId.localPoolId));
        size_t updatePacketSize = updatePacket.getSerializedSize();

        store_address_t storeId;
        ReturnValue_t result = addUpdateToStore(updatePacket, storeId);
        if(result != HasReturnvaluesIF::RETURN_OK) {
            return result;
        }

        CommandMessage notification;
        HousekeepingMessage::setUpdateSnapshotVariableCommand(&notification,
                receiver.dataId.localPoolId, storeId);
        result = hkQueue->sendMessage(receiver.destinationQueue,
                &notification);
        if (result != HasReturnvaluesIF::RETURN_OK) {
            status = result;
        }
        toReset = poolObj;
    }
    else {
        LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(
                receiver.dataId.sid);
        if(dataSet == nullptr) {
            return HasReturnvaluesIF::RETURN_FAILED;
        }

        if(not dataSet->hasChanged()) {
            return HasReturnvaluesIF::RETURN_OK;
        }

        // prepare and send update snapshot.
        timeval now;
        Clock::getClock_timeval(&now);
        CCSDSTime::CDS_short cds;
        CCSDSTime::convertToCcsds(&cds, &now);
        HousekeepingPacketUpdate updatePacket(reinterpret_cast<uint8_t*>(&cds),
                sizeof(cds), owner->getDataSetHandle(receiver.dataId.sid));

        store_address_t storeId;
        ReturnValue_t result = addUpdateToStore(updatePacket, storeId);
        if(result != HasReturnvaluesIF::RETURN_OK) {
            return result;
        }

        CommandMessage notification;
        HousekeepingMessage::setUpdateSnapshotSetCommand(
                &notification, receiver.dataId.sid, storeId);
        result = hkQueue->sendMessage(receiver.destinationQueue, &notification);
        if(result != HasReturnvaluesIF::RETURN_OK) {
            status = result;
        }
        toReset = dataSet;

    }
    if(toReset != nullptr) {
        handleChangeResetLogic(receiver.dataType,
                receiver.dataId, toReset);
    }
    return HasReturnvaluesIF::RETURN_OK;
}

ReturnValue_t LocalDataPoolManager::addUpdateToStore(
        HousekeepingPacketUpdate& updatePacket, store_address_t& storeId) {
    size_t updatePacketSize = updatePacket.getSerializedSize();
    uint8_t *storePtr = nullptr;
    ReturnValue_t result = ipcStore->getFreeElement(&storeId,
            updatePacket.getSerializedSize(), &storePtr);
    if (result != HasReturnvaluesIF::RETURN_OK) {
        return result;
    }
    size_t serializedSize = 0;
    result = updatePacket.serialize(&storePtr, &serializedSize,
            updatePacketSize, SerializeIF::Endianness::MACHINE);
    return result;;
}

void LocalDataPoolManager::handleChangeResetLogic(
        DataType type, DataId dataId, MarkChangedIF* toReset) {
    if(hkUpdateResetList == nullptr) {
        // config error!
        return;
    }

    for(auto& changeInfo: *hkUpdateResetList) {
        if(changeInfo.dataType != type) {
            continue;
        }
        if((changeInfo.dataType == DataType::DATA_SET) and
                (changeInfo.dataId.sid != dataId.sid)) {
            continue;
        }
        if((changeInfo.dataType == DataType::LOCAL_POOL_VARIABLE) and
                (changeInfo.dataId.localPoolId != dataId.localPoolId)) {
            continue;
        }

        if(changeInfo.updateCounter <= 1) {
            toReset->setChanged(false);
        }
        if(changeInfo.currentUpdateCounter == 0) {
            toReset->setChanged(false);
        }
        else {
            changeInfo.currentUpdateCounter--;
        }
        return;
    }
}

void LocalDataPoolManager::resetHkUpdateResetHelper() {
    if(hkUpdateResetList == nullptr) {
        return;
    }

    for(auto& changeInfo: *hkUpdateResetList) {
        changeInfo.currentUpdateCounter = changeInfo.updateCounter;
    }
}

ReturnValue_t LocalDataPoolManager::subscribeForPeriodicPacket(sid_t sid,
        bool enableReporting, float collectionInterval, bool isDiagnostics,
        object_id_t packetDestination) {
    AcceptsHkPacketsIF* hkReceiverObject =
            objectManager->get<AcceptsHkPacketsIF>(packetDestination);
    if(hkReceiverObject == nullptr) {
        sif::error << "LocalDataPoolManager::subscribeForPeriodicPacket:"
                << " Invalid receiver!"<< std::endl;
        return HasReturnvaluesIF::RETURN_OK;
    }

    struct HkReceiver hkReceiver;
    hkReceiver.dataId.sid = sid;
    hkReceiver.reportingType = ReportingType::PERIODIC;
    hkReceiver.dataType = DataType::DATA_SET;
    hkReceiver.destinationQueue = hkReceiverObject->getHkQueue();

    LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(sid);
    if(dataSet != nullptr) {
        dataSet->setReportingEnabled(enableReporting);
        dataSet->setDiagnostic(isDiagnostics);
        dataSet->initializePeriodicHelper(collectionInterval,
                owner->getPeriodicOperationFrequency(), isDiagnostics);
    }

    hkReceiversMap.push_back(hkReceiver);
    return HasReturnvaluesIF::RETURN_OK;
}


ReturnValue_t LocalDataPoolManager::subscribeForUpdatePackets(sid_t sid,
        bool isDiagnostics, bool reportingEnabled,
        object_id_t packetDestination) {
    AcceptsHkPacketsIF* hkReceiverObject =
            objectManager->get<AcceptsHkPacketsIF>(packetDestination);
    if(hkReceiverObject == nullptr) {
        sif::error << "LocalDataPoolManager::subscribeForPeriodicPacket:"
                << " Invalid receiver!"<< std::endl;
        return HasReturnvaluesIF::RETURN_OK;
    }

    struct HkReceiver hkReceiver;
    hkReceiver.dataId.sid = sid;
    hkReceiver.reportingType = ReportingType::UPDATE_HK;
    hkReceiver.dataType = DataType::DATA_SET;
    hkReceiver.destinationQueue = hkReceiverObject->getHkQueue();

    LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(sid);
    if(dataSet != nullptr) {
        dataSet->setReportingEnabled(true);
        dataSet->setDiagnostic(isDiagnostics);
    }

    hkReceiversMap.push_back(hkReceiver);

    handleHkUpdateResetListInsertion(hkReceiver.dataType, hkReceiver.dataId);
    return HasReturnvaluesIF::RETURN_OK;
}

ReturnValue_t LocalDataPoolManager::subscribeForSetUpdateMessages(
        const uint32_t setId, object_id_t destinationObject,
        MessageQueueId_t targetQueueId, bool generateSnapshot) {
    struct HkReceiver hkReceiver;
    hkReceiver.dataType = DataType::DATA_SET;
    hkReceiver.dataId.sid = sid_t(this->getOwner()->getObjectId(), setId);
    hkReceiver.destinationQueue = targetQueueId;
    hkReceiver.objectId = destinationObject;
    if(generateSnapshot) {
        hkReceiver.reportingType = ReportingType::UPDATE_SNAPSHOT;
    }
    else {
        hkReceiver.reportingType = ReportingType::UPDATE_NOTIFICATION;
    }

    hkReceiversMap.push_back(hkReceiver);

    handleHkUpdateResetListInsertion(hkReceiver.dataType, hkReceiver.dataId);
    return HasReturnvaluesIF::RETURN_OK;
}

ReturnValue_t LocalDataPoolManager::subscribeForVariableUpdateMessages(
        const lp_id_t localPoolId, object_id_t destinationObject,
        MessageQueueId_t targetQueueId, bool generateSnapshot) {
    struct HkReceiver hkReceiver;
    hkReceiver.dataType = DataType::LOCAL_POOL_VARIABLE;
    hkReceiver.dataId.localPoolId = localPoolId;
    hkReceiver.destinationQueue = targetQueueId;
    hkReceiver.objectId = destinationObject;
    if(generateSnapshot) {
        hkReceiver.reportingType = ReportingType::UPDATE_SNAPSHOT;
    }
    else {
        hkReceiver.reportingType = ReportingType::UPDATE_NOTIFICATION;
    }

    hkReceiversMap.push_back(hkReceiver);

    handleHkUpdateResetListInsertion(hkReceiver.dataType, hkReceiver.dataId);
    return HasReturnvaluesIF::RETURN_OK;
}

void LocalDataPoolManager::handleHkUpdateResetListInsertion(DataType dataType,
        DataId dataId) {
    if(hkUpdateResetList == nullptr) {
        hkUpdateResetList = new std::vector<struct HkUpdateResetHelper>();
    }

    for(auto& updateResetStruct: *hkUpdateResetList) {
        if(dataType == DataType::DATA_SET) {
            if(updateResetStruct.dataId.sid == dataId.sid) {
                updateResetStruct.updateCounter++;
                updateResetStruct.currentUpdateCounter++;
                return;
            }
        }
        else {
            if(updateResetStruct.dataId.localPoolId == dataId.localPoolId) {
                updateResetStruct.updateCounter++;
                updateResetStruct.currentUpdateCounter++;
                return;
            }
        }

    }
    HkUpdateResetHelper hkUpdateResetHelper;
    hkUpdateResetHelper.currentUpdateCounter = 1;
    hkUpdateResetHelper.updateCounter = 1;
    hkUpdateResetHelper.dataType = dataType;
    if(dataType == DataType::DATA_SET) {
        hkUpdateResetHelper.dataId.sid = dataId.sid;
    }
    else {
        hkUpdateResetHelper.dataId.localPoolId = dataId.localPoolId;
    }
    hkUpdateResetList->push_back(hkUpdateResetHelper);
}

ReturnValue_t LocalDataPoolManager::handleHousekeepingMessage(
        CommandMessage* message) {
    Command_t command = message->getCommand();
    sid_t sid = HousekeepingMessage::getSid(message);
    ReturnValue_t result = HasReturnvaluesIF::RETURN_OK;
    switch(command) {
    // Houskeeping interface handling.
    case(HousekeepingMessage::ENABLE_PERIODIC_DIAGNOSTICS_GENERATION): {
        result = togglePeriodicGeneration(sid, true, true);
        break;
    }

    case(HousekeepingMessage::DISABLE_PERIODIC_DIAGNOSTICS_GENERATION): {
        result = togglePeriodicGeneration(sid, false, true);
        break;
    }

    case(HousekeepingMessage::ENABLE_PERIODIC_HK_REPORT_GENERATION): {
        result = togglePeriodicGeneration(sid, true, false);
        break;
    }

    case(HousekeepingMessage::DISABLE_PERIODIC_HK_REPORT_GENERATION): {
        result = togglePeriodicGeneration(sid, false, false);
        break;
    }

    case(HousekeepingMessage::REPORT_DIAGNOSTICS_REPORT_STRUCTURES):
                        return generateSetStructurePacket(sid, true);
    case(HousekeepingMessage::REPORT_HK_REPORT_STRUCTURES):
                        return generateSetStructurePacket(sid, false);
    case(HousekeepingMessage::MODIFY_DIAGNOSTICS_REPORT_COLLECTION_INTERVAL):
    case(HousekeepingMessage::MODIFY_PARAMETER_REPORT_COLLECTION_INTERVAL): {
        float newCollIntvl = 0;
        HousekeepingMessage::getCollectionIntervalModificationCommand(message,
                &newCollIntvl);
        if(command == HousekeepingMessage::
                MODIFY_DIAGNOSTICS_REPORT_COLLECTION_INTERVAL) {
            result = changeCollectionInterval(sid, newCollIntvl, true);
        }
        else {
            result = changeCollectionInterval(sid, newCollIntvl, false);
        }
        break;
    }

    case(HousekeepingMessage::GENERATE_ONE_PARAMETER_REPORT):
    case(HousekeepingMessage::GENERATE_ONE_DIAGNOSTICS_REPORT): {
        LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(sid);
        if(command == HousekeepingMessage::GENERATE_ONE_PARAMETER_REPORT
                and dataSet->isDiagnostics()) {
            return WRONG_HK_PACKET_TYPE;
        }
        else if(command == HousekeepingMessage::GENERATE_ONE_DIAGNOSTICS_REPORT
                and not dataSet->isDiagnostics()) {
            return WRONG_HK_PACKET_TYPE;
        }
        return generateHousekeepingPacket(HousekeepingMessage::getSid(message),
                dataSet, true);
    }

    // Notification handling.
    case(HousekeepingMessage::UPDATE_NOTIFICATION_SET): {
        owner->handleChangedDataset(sid);
        return HasReturnvaluesIF::RETURN_OK;
    }
    case(HousekeepingMessage::UPDATE_NOTIFICATION_VARIABLE): {
        lp_id_t locPoolId = HousekeepingMessage::
                getUpdateNotificationVariableCommand(message);
        owner->handleChangedPoolVariable(locPoolId);
        return HasReturnvaluesIF::RETURN_OK;
    }
    case(HousekeepingMessage::UPDATE_SNAPSHOT_SET): {
        store_address_t storeId;
        HousekeepingMessage::getUpdateSnapshotSetCommand(message, &storeId);
        owner->handleChangedDataset(sid, storeId);
        return HasReturnvaluesIF::RETURN_OK;
    }
    case(HousekeepingMessage::UPDATE_SNAPSHOT_VARIABLE): {
        store_address_t storeId;
        lp_id_t localPoolId = HousekeepingMessage::
                getUpdateSnapshotVariableCommand(message, &storeId);
        owner->handleChangedPoolVariable(localPoolId, storeId);
        return HasReturnvaluesIF::RETURN_OK;
    }

    default:
        return CommandMessageIF::UNKNOWN_COMMAND;
    }

    CommandMessage reply;
    if(result != HasReturnvaluesIF::RETURN_OK) {
        HousekeepingMessage::setHkRequestFailureReply(&reply, sid, result);
    }
    else {
        HousekeepingMessage::setHkRequestSuccessReply(&reply, sid);
    }
    hkQueue->sendMessage(hkDestinationId, &reply);
    return result;
}

ReturnValue_t LocalDataPoolManager::printPoolEntry(
        lp_id_t localPoolId) {
    auto poolIter = localPoolMap.find(localPoolId);
    if (poolIter == localPoolMap.end()) {
        sif::debug << "HousekeepingManager::fechPoolEntry:"
                << " Pool entry not found." << std::endl;
        return POOL_ENTRY_NOT_FOUND;
    }
    poolIter->second->print();
    return HasReturnvaluesIF::RETURN_OK;
}

MutexIF* LocalDataPoolManager::getMutexHandle() {
    return mutex;
}

HasLocalDataPoolIF* LocalDataPoolManager::getOwner() {
    return owner;
}

ReturnValue_t LocalDataPoolManager::generateHousekeepingPacket(sid_t sid,
        LocalPoolDataSetBase* dataSet, bool forDownlink,
        MessageQueueId_t destination) {
    if(dataSet == nullptr) {
        // Configuration error.
        sif::warning << "HousekeepingManager::generateHousekeepingPacket:"
                << " Set ID not found or dataset not assigned!" << std::endl;
        return HasReturnvaluesIF::RETURN_FAILED;
    }

    store_address_t storeId;
    HousekeepingPacketDownlink hkPacket(sid, dataSet);
    size_t serializedSize = 0;
    ReturnValue_t result = serializeHkPacketIntoStore(hkPacket, storeId,
            forDownlink, &serializedSize);
    if(result != HasReturnvaluesIF::RETURN_OK or serializedSize == 0) {
        return result;
    }

    // and now we set a HK message and send it the HK packet destination.
    CommandMessage hkMessage;
    if(dataSet->isDiagnostics()) {
        HousekeepingMessage::setHkDiagnosticsReply(&hkMessage, sid, storeId);
    }
    else {
        HousekeepingMessage::setHkReportReply(&hkMessage, sid, storeId);
    }

    if(hkQueue == nullptr) {
        return QUEUE_OR_DESTINATION_NOT_SET;
    }
    if(destination == MessageQueueIF::NO_QUEUE) {
        if(hkDestinationId == MessageQueueIF::NO_QUEUE) {
            // error, all destinations invalid
            return HasReturnvaluesIF::RETURN_FAILED;
        }
        destination = hkDestinationId;
    }

    return hkQueue->sendMessage(destination, &hkMessage);
}

ReturnValue_t LocalDataPoolManager::serializeHkPacketIntoStore(
        HousekeepingPacketDownlink& hkPacket,
        store_address_t& storeId, bool forDownlink,
        size_t* serializedSize) {
    uint8_t* dataPtr = nullptr;
    const size_t maxSize = hkPacket.getSerializedSize();
    ReturnValue_t result = ipcStore->getFreeElement(&storeId,
            maxSize, &dataPtr);
    if(result != HasReturnvaluesIF::RETURN_OK) {
        return result;
    }

    if(forDownlink) {
        return hkPacket.serialize(&dataPtr, serializedSize, maxSize,
                SerializeIF::Endianness::BIG);
    }
    return hkPacket.serialize(&dataPtr, serializedSize, maxSize,
            SerializeIF::Endianness::MACHINE);
}

void LocalDataPoolManager::setNonDiagnosticIntervalFactor(
        uint8_t nonDiagInvlFactor) {
    this->nonDiagnosticIntervalFactor = nonDiagInvlFactor;
}

void LocalDataPoolManager::performPeriodicHkGeneration(HkReceiver& receiver) {
    sid_t sid = receiver.dataId.sid;
    LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(sid);
    if(not dataSet->getReportingEnabled()) {
        return;
    }

    if(dataSet->periodicHelper == nullptr) {
        // Configuration error.
        return;
    }

    if(not dataSet->periodicHelper->checkOpNecessary()) {
        return;
    }

    ReturnValue_t result = generateHousekeepingPacket(
            sid, dataSet, true);
    if(result != HasReturnvaluesIF::RETURN_OK) {
        // configuration error
        sif::debug << "LocalDataPoolManager::performHkOperation:"
                << "0x" << std::hex << std::setfill('0') << std::setw(8)
                << owner->getObjectId() << " Error generating "
                << "HK packet" << std::setfill(' ') << std::dec << std::endl;
    }
}


ReturnValue_t LocalDataPoolManager::togglePeriodicGeneration(sid_t sid,
        bool enable, bool isDiagnostics) {
    LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(sid);
    if((dataSet->isDiagnostics() and not isDiagnostics) or
            (not dataSet->isDiagnostics() and isDiagnostics)) {
        return WRONG_HK_PACKET_TYPE;
    }

    if((dataSet->getReportingEnabled() and enable) or
            (not dataSet->getReportingEnabled() and not enable)) {
        return REPORTING_STATUS_UNCHANGED;
    }

    dataSet->setReportingEnabled(enable);
    return HasReturnvaluesIF::RETURN_OK;
}

ReturnValue_t LocalDataPoolManager::changeCollectionInterval(sid_t sid,
        float newCollectionInterval, bool isDiagnostics) {
    LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(sid);
    bool targetIsDiagnostics = dataSet->isDiagnostics();
    if((targetIsDiagnostics and not isDiagnostics) or
            (not targetIsDiagnostics and isDiagnostics)) {
        return WRONG_HK_PACKET_TYPE;
    }

    if(dataSet->periodicHelper == nullptr) {
        // config error
        return PERIODIC_HELPER_INVALID;
    }

    dataSet->periodicHelper->changeCollectionInterval(newCollectionInterval);
    return HasReturnvaluesIF::RETURN_OK;
}

ReturnValue_t LocalDataPoolManager::generateSetStructurePacket(sid_t sid,
        bool isDiagnostics) {
    // Get and check dataset first.
    LocalPoolDataSetBase* dataSet = owner->getDataSetHandle(sid);
    if(dataSet == nullptr) {
        sif::warning << "HousekeepingManager::generateHousekeepingPacket:"
                << " Set ID not found" << std::endl;
        return HasReturnvaluesIF::RETURN_FAILED;
    }


    bool targetIsDiagnostics = dataSet->isDiagnostics();
    if((targetIsDiagnostics and not isDiagnostics) or
            (not targetIsDiagnostics and isDiagnostics)) {
        return WRONG_HK_PACKET_TYPE;
    }

    bool valid = dataSet->isValid();
    bool reportingEnabled = dataSet->getReportingEnabled();
    float collectionInterval =
            dataSet->periodicHelper->getCollectionIntervalInSeconds();

    // Generate set packet which can be serialized.
    HousekeepingSetPacket setPacket(sid,
            reportingEnabled, valid, collectionInterval, dataSet);
    size_t expectedSize = setPacket.getSerializedSize();
    uint8_t* storePtr = nullptr;
    store_address_t storeId;
    ReturnValue_t result = ipcStore->getFreeElement(&storeId,
            expectedSize,&storePtr);
    if(result != HasReturnvaluesIF::RETURN_OK) {
        sif::error << "HousekeepingManager::generateHousekeepingPacket: "
                << "Could not get free element from IPC store." << std::endl;
        return result;
    }

    // Serialize set packet into store.
    size_t size = 0;
    result = setPacket.serialize(&storePtr, &size, expectedSize,
            SerializeIF::Endianness::BIG);
    if(expectedSize != size) {
        sif::error << "HousekeepingManager::generateSetStructurePacket: "
                << "Expected size is not equal to serialized size" << std::endl;
    }

    // Send structure reporting reply.
    CommandMessage reply;
    if(isDiagnostics) {
        HousekeepingMessage::setDiagnosticsStuctureReportReply(&reply,
                sid, storeId);
    }
    else {
        HousekeepingMessage::setHkStuctureReportReply(&reply,
                sid, storeId);
    }

    hkQueue->reply(&reply);
    return result;
}