// SPDX-License-Identifier: GPL-3.0-or-later

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Copyright (C) 2013 - 2024, nymea GmbH
* Copyright (C) 2024 - 2025, chargebyte austria GmbH
*
* This file is part of nymea-plugins-modbus.
*
* nymea-plugins-modbus 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.
*
* nymea-plugins-modbus 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with nymea-plugins-modbus. If not, see <https://www.gnu.org/licenses/>.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include "huaweismartlogger.h"

Q_DECLARE_LOGGING_CATEGORY(dcHuaweiSmartLoggerModbusTcpConnection)

HuaweiSmartLogger::HuaweiSmartLogger(const QHostAddress &hostAddress, uint port, quint16 meterSlaveId, QObject *parent)
    : HuaweiSmartLoggerModbusTcpConnection{hostAddress, port, 0, parent},
    m_meterSlaveId{meterSlaveId}
{
    // Note: the smart logger only responds to requests on slave ID 0 (broadcast), the meter itself can be
    // accessed using the connected modbus RTU slave ID, therefore we need to handle 2 modbus slave IDs with one modbus TCP connection

}

bool HuaweiSmartLogger::update()
{
    if (!m_modbusTcpMaster->connected())
        return false;

    if (!m_pendingUpdateReplies.isEmpty()) {
        qCDebug(dcHuaweiSmartLoggerModbusTcpConnection()) << "Tried to update but there are still some update replies pending. Waiting for them to be finished...";
        return true;
    }

    QModbusReply *reply = nullptr;

    // Read Total active output power of all inverters
    qCDebug(dcHuaweiSmartLoggerModbusTcpConnection()) << "--> Read \"Total active output power of all inverters\" register:" << 40525 << "size:" << 2;
    reply = readInverterTotalActivePower();
    if (!reply) {
        qCWarning(dcHuaweiSmartLoggerModbusTcpConnection()) << "Error occurred while reading \"Total active output power of all inverters\" registers from" << m_modbusTcpMaster->hostAddress().toString() << m_modbusTcpMaster->errorString();
        return false;
    }

    if (reply->isFinished()) {
        reply->deleteLater(); // Broadcast reply returns immediately
        return false;
    }

    m_pendingUpdateReplies.append(reply);
    connect(reply, &QModbusReply::finished, reply, &QModbusReply::deleteLater);
    connect(reply, &QModbusReply::finished, this, [this, reply](){
        m_pendingUpdateReplies.removeAll(reply);
        handleModbusError(reply->error());
        if (reply->error() != QModbusDevice::NoError) {
            verifyUpdateFinished();
            return;
        }

        const QModbusDataUnit unit = reply->result();
        processInverterTotalActivePowerRegisterValues(unit.values());
        verifyUpdateFinished();
    });

    connect(reply, &QModbusReply::errorOccurred, this, [this, reply] (QModbusDevice::Error error){
        QModbusResponse response = reply->rawResult();
        if (reply->error() == QModbusDevice::ProtocolError && response.isException()) {
            qCWarning(dcHuaweiSmartLoggerModbusTcpConnection()) << "Modbus reply error occurred while reading \"Total active output power of all inverters\" registers from" << m_modbusTcpMaster->hostAddress().toString() << error << reply->errorString() << ModbusDataUtils::exceptionCodeToString(response.exceptionCode());
        } else {
            qCWarning(dcHuaweiSmartLoggerModbusTcpConnection()) << "Modbus reply error occurred while reading \"Total active output power of all inverters\" registers from" << m_modbusTcpMaster->hostAddress().toString() << error << reply->errorString();
        }
    });

    // Read Total energy yield produced by all inverters
    qCDebug(dcHuaweiSmartLoggerModbusTcpConnection()) << "--> Read \"Total energy yield produced by all inverters\" register:" << 40560 << "size:" << 2;
    reply = readInverterTotalEnergyProduced();
    if (!reply) {
        qCWarning(dcHuaweiSmartLoggerModbusTcpConnection()) << "Error occurred while reading \"Total energy yield produced by all inverters\" registers from" << m_modbusTcpMaster->hostAddress().toString() << m_modbusTcpMaster->errorString();
        return false;
    }

    if (reply->isFinished()) {
        reply->deleteLater(); // Broadcast reply returns immediately
        return false;
    }

    m_pendingUpdateReplies.append(reply);
    connect(reply, &QModbusReply::finished, reply, &QModbusReply::deleteLater);
    connect(reply, &QModbusReply::finished, this, [this, reply](){
        m_pendingUpdateReplies.removeAll(reply);
        handleModbusError(reply->error());
        if (reply->error() != QModbusDevice::NoError) {
            verifyUpdateFinished();
            return;
        }

        const QModbusDataUnit unit = reply->result();
        processInverterTotalEnergyProducedRegisterValues(unit.values());
        verifyUpdateFinished();
    });

    connect(reply, &QModbusReply::errorOccurred, this, [this, reply] (QModbusDevice::Error error){
        QModbusResponse response = reply->rawResult();
        if (reply->error() == QModbusDevice::ProtocolError && response.isException()) {
            qCWarning(dcHuaweiSmartLoggerModbusTcpConnection()) << "Modbus reply error occurred while reading \"Total energy yield produced by all inverters\" registers from" << m_modbusTcpMaster->hostAddress().toString() << error << reply->errorString() << ModbusDataUtils::exceptionCodeToString(response.exceptionCode());
        } else {
            qCWarning(dcHuaweiSmartLoggerModbusTcpConnection()) << "Modbus reply error occurred while reading \"Total energy yield produced by all inverters\" registers from" << m_modbusTcpMaster->hostAddress().toString() << error << reply->errorString();
        }
    });

    // Read meterData

    // Temporary set the slave ID to the configured meter id, send the request and reset to broadcast...
    m_slaveId = m_meterSlaveId;
    reply = readBlockMeterData();
    m_slaveId = 0;
    qCDebug(dcHuaweiSmartLoggerModbusTcpConnection()) << "--> Read block \"meterData\" registers from:" << 32260 << "size:" << 105;
    if (!reply) {
        qCWarning(dcHuaweiSmartLoggerModbusTcpConnection()) << "Error occurred while reading block \"meterData\" registers";
        return false;
    }

    if (reply->isFinished()) {
        reply->deleteLater(); // Broadcast reply returns immediately
        return false;
    }

    m_pendingUpdateReplies.append(reply);
    connect(reply, &QModbusReply::finished, reply, &QModbusReply::deleteLater);
    connect(reply, &QModbusReply::finished, this, [this, reply](){
        m_pendingUpdateReplies.removeAll(reply);
        handleModbusError(reply->error());
        if (reply->error() != QModbusDevice::NoError) {
            verifyUpdateFinished();
            return;
        }

        const QModbusDataUnit unit = reply->result();
        const QVector<quint16> blockValues = unit.values();
        processBlockMeterDataRegisterValues(blockValues);
        verifyUpdateFinished();
    });

    connect(reply, &QModbusReply::errorOccurred, this, [reply] (QModbusDevice::Error error){
        QModbusResponse response = reply->rawResult();
        if (reply->error() == QModbusDevice::ProtocolError && response.isException()) {
            qCWarning(dcHuaweiSmartLoggerModbusTcpConnection()) << "Modbus reply error occurred while updating block \"meterData\" registers" << error << reply->errorString() << ModbusDataUtils::exceptionCodeToString(response.exceptionCode());
        } else {
            qCWarning(dcHuaweiSmartLoggerModbusTcpConnection()) << "Modbus reply error occurred while updating block \"meterData\" registers" << error << reply->errorString();
        }
    });

    return true;
}