/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2018-     Equinor ASA
//
//  ResInsight is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
//  FITNESS FOR A PARTICULAR PURPOSE.
//
//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#include "VdePacketDirectory.h"

#include <algorithm>


//==================================================================================================
//
//
//
//==================================================================================================

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
VdePacketDirectory::VdePacketDirectory()
{
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void VdePacketDirectory::addPacket(std::unique_ptr<VdeArrayDataPacket> packet)
{
    const int id = packet->arrayId();
    m_idToPacketMap[id] = std::move(packet);
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
const VdeArrayDataPacket* VdePacketDirectory::lookupPacket(int arrayId) const
{
    IdToPacketMap_T::const_iterator it = m_idToPacketMap.find(arrayId);
    if (it == m_idToPacketMap.end())
    {
        return nullptr;
    }

    return it->second.get();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void VdePacketDirectory::clear()
{
    m_idToPacketMap.clear();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void VdePacketDirectory::pruneUnreferencedPackets(const std::vector<int>& packetIdsInUseArr)
{
    std::vector<int> sortedPacketsIdsInUse(packetIdsInUseArr);
    std::sort(sortedPacketsIdsInUse.begin(), sortedPacketsIdsInUse.end());

    IdToPacketMap_T::const_iterator it = m_idToPacketMap.cbegin();
    while (it != m_idToPacketMap.cend()) 
    {
        const int packetId = it->first;
        if (!std::binary_search(sortedPacketsIdsInUse.begin(), sortedPacketsIdsInUse.end(), packetId))
        {
            it = m_idToPacketMap.erase(it);
        }
        else
        {
            ++it;
        }
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
bool VdePacketDirectory::getPacketsAsCombinedBuffer(const std::vector<int>& packetIdsToGet, QByteArray* combinedPacketArr) const
{
    for (const int arrayId : packetIdsToGet)
    {
        IdToPacketMap_T::const_iterator it = m_idToPacketMap.find(arrayId);
        if (it == m_idToPacketMap.end())
        {
            return false;
        }

        const VdeArrayDataPacket& packet = *it->second;
        *combinedPacketArr += QByteArray::fromRawData(packet.fullPacketRawPtr(), static_cast<int>(packet.fullPacketSize()));
    }

    return true;
}