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#include "amtronecudiscovery.h"
#include "extern-plugininfo.h"

AmtronECUDiscovery::AmtronECUDiscovery(NetworkDeviceDiscovery *networkDeviceDiscovery, QObject *parent) :
    QObject{parent},
    m_networkDeviceDiscovery{networkDeviceDiscovery}
{
    m_gracePeriodTimer.setSingleShot(true);
    m_gracePeriodTimer.setInterval(3000);
    connect(&m_gracePeriodTimer, &QTimer::timeout, this, [this](){
        qCDebug(dcMennekes()) << "Discovery: Grace period timer triggered.";
        finishDiscovery();
    });
}

void AmtronECUDiscovery::startDiscovery()
{
    qCInfo(dcMennekes()) << "Discovery: Searching for AMTRON wallboxes in the network...";
    NetworkDeviceDiscoveryReply *discoveryReply = m_networkDeviceDiscovery->discover();

    connect(discoveryReply, &NetworkDeviceDiscoveryReply::networkDeviceInfoAdded, this, &AmtronECUDiscovery::checkNetworkDevice);

    connect(discoveryReply, &NetworkDeviceDiscoveryReply::finished, this, [=](){
        qCDebug(dcMennekes()) << "Discovery: Network discovery finished. Found" << discoveryReply->networkDeviceInfos().count() << "network devices";
        m_gracePeriodTimer.start();
        discoveryReply->deleteLater();
    });
}

QList<AmtronECUDiscovery::Result> AmtronECUDiscovery::discoveryResults() const
{
    return m_discoveryResults;
}

void AmtronECUDiscovery::checkNetworkDevice(const NetworkDeviceInfo &networkDeviceInfo)
{
    if (networkDeviceInfo.macAddressManufacturer() != "GIGA-BYTE TECHNOLOGY CO.,LTD.") {
        return;
    }

    int port = 502;
    int slaveId = 0xff;
    qCDebug(dcMennekes()) << "Checking network device:" << networkDeviceInfo << "Port:" << port << "Slave ID:" << slaveId;

    AmtronECUModbusTcpConnection *connection = new AmtronECUModbusTcpConnection(networkDeviceInfo.address(), port, slaveId, this);
    m_connections.append(connection);

    connect(connection, &AmtronECUModbusTcpConnection::reachableChanged, this, [=](bool reachable){
        if (!reachable) {
            cleanupConnection(connection);
            return;
        }

        connect(connection, &AmtronECUModbusTcpConnection::initializationFinished, this, [=](bool success){
            if (!success) {
                qCDebug(dcMennekes()) << "Discovery: Initialization failed on" << networkDeviceInfo.address().toString();
                cleanupConnection(connection);
                return;
            }
            Result result;
            result.firmwareVersion = connection->firmwareVersion();
            result.model = connection->model();
            result.networkDeviceInfo = networkDeviceInfo;
            m_discoveryResults.append(result);

            qCDebug(dcMennekes()) << "Discovery: Found wallbox with firmware version:" << result.firmwareVersion << result.networkDeviceInfo;

            cleanupConnection(connection);
        });

        if (!connection->initialize()) {
            qCDebug(dcMennekes()) << "Discovery: Unable to initialize connection on" << networkDeviceInfo.address().toString();
            cleanupConnection(connection);
        }
    });

    connect(connection, &AmtronECUModbusTcpConnection::checkReachabilityFailed, this, [=](){
        qCDebug(dcMennekes()) << "Discovery: Checking reachability failed on" << networkDeviceInfo.address().toString();
        cleanupConnection(connection);
    });

    connection->connectDevice();
}

void AmtronECUDiscovery::cleanupConnection(AmtronECUModbusTcpConnection *connection)
{
    m_connections.removeAll(connection);
    connection->disconnectDevice();
    connection->deleteLater();
}

void AmtronECUDiscovery::finishDiscovery()
{
    qint64 durationMilliSeconds = QDateTime::currentMSecsSinceEpoch() - m_startDateTime.toMSecsSinceEpoch();

    // Cleanup any leftovers...we don't care any more
    foreach (AmtronECUModbusTcpConnection *connection, m_connections)
        cleanupConnection(connection);

    qCInfo(dcMennekes()) << "Discovery: Finished the discovery process. Found" << m_discoveryResults.count()
                       << "AMTRON wallboxes in" << QTime::fromMSecsSinceStartOfDay(durationMilliSeconds).toString("mm:ss.zzz");
    m_gracePeriodTimer.stop();

    emit discoveryFinished();
}
