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#ifndef MTEC_H
#define MTEC_H

#include <QDateTime>
#include <QObject>

#include <modbustcpmaster.h>

class MTec : public QObject
{
    Q_OBJECT
public:
    enum HeatpumpState {
        HeatpumpStateStandby = 0,
        HeatpumpStatePreRun = 1,
        HeatpumpStateAutomaticHeat = 2,
        HeatpumpStateDefrost = 3,
        HeatpumpStateAutomaticCool = 4,
        HeatpumpStatePostRun = 5,
        HeatpumpStateSaftyShutdown = 7,
        HeatpumpStateError = 8
    };
    Q_ENUM(HeatpumpState)

    explicit MTec(const QHostAddress &address, QObject *parent = nullptr);
    ~MTec();

    QHostAddress hostAddress() const;
    bool connected() const;

    QModbusReply *setTargetRoomTemperature(double targetRoomTemperature);
    QModbusReply *setSmartHomeEnergy(quint16 smartHomeEnergy);

public slots:
    bool connectDevice();
    void disconnectDevice();

    void updateValues();

private:
    /** Modbus Unit ID (undocumented, guessing 1 for now) */
    static const quint16 ModbusUnitID = 1;

    /** The following modbus addresses can be read: */
    enum Register {
        /* R APPL.CtrlAppl.sParam.heatCircuit[0].tempRoom.values.actValue
         * Actual room temperature [1/10°C]. */
        RegisterRoomTemperature = 1,

        /* RW APPL.CtrlAppl.sParam.heatCircuit[0].param.normalSetTemp
         * Room set temperature for heating circuit [1/10°C]. */
        RegisterTargetRoomTemperature = 4,

        /* R APPL.CtrlAppl.sParam.hotWaterTank[0].topTemp.values.actValue
         * Hot water tank top temperature [1/10°C]. */
        RegisterHotWaterTankTemperature = 401,

        /* R APPL.CtrlAppl.sParam.bufferTank[0].topTemp.values.actValue
         * Buffer Actual top temperature [1/10°C]. */
        RegisterBufferTankTemperature = 601,

        /* R APPL.CtrlAppl.sStatisticalData.heatpump[0].consumption.energy
         * Total accumulated heating energy [kWh] */
        RegisterTotalAccumulatedHeatingEnergy = 701,

        /* R APPL.CtrlAppl.sStatisticalData.heatpump[0].consumption.electricalenergy
         * Total accumulated electrical energy [kWh] */
        RegisterTotalAccumulatedElectricalEnergy = 702,

        /* R APPL.CtrlAppl.sParam.heatpump[0].values.heatpumpState */
        RegisterHeatpumpState = 703,

        /* R APPL.CtrlAppl.sParam.heatpump[0].HeatMeter.values.power
         * Actual power consumtion [W] */
        RegisterHeatMeterPowerConsumption = 706,

        /* R APPL.CtrlAppl.sParam.heatpump[0].ElectricEnergyMeter.values.power
         * Actual power consumtion [W] */
        RegisterEnergyMeterPowerConsumption = 707,

        /* RW APPL.CtrlAppl.sIOModule.Virt[0].param.sensor[0]
         * Acutal excess energy given from Smart home System [W] */
        RegisterActualExcessEnergySmartHome = 1000,

        /* R APPL.CtrlAppl.sParam.photovoltaics.ElectricEnergyMeter.values.power
         * Acutal excess energy given from Electricity Meter [W] */
        RegisterActualExcessEnergySmartHomeElectricityMeter = 1002,

        /* R APPL.CtrlAppl.sParam.outdoorTemp.values.actValue
         * Actual exterior temperature [°C] */
        RegisterActualOutdoorTemperature = 1502,

    };

    QHostAddress m_hostAddress;
    ModbusTCPMaster *m_modbusMaster = nullptr;

    double m_roomTemperature = 0;
    double m_targetRoomTemperature = 0;
    double m_waterTankTopTemperature = 0;
    double m_bufferTankTemperature = 0;
    double m_totalAccumulatedHeatingEnergy = 0;
    double m_totalAccumulatedElectricalEnergy = 0;
    HeatpumpState m_heatPumpState = HeatpumpStateStandby;
    double m_heatMeterPowerConsumption = 0;
    double m_energyMeterPowerConsumption = 0;
    double m_actualExcessEnergySmartHome = 0;
    double m_actualExcessEnergySmartHomeElectricityMeter = 0;
    double m_actualOutdoorTemperature = 0;

signals:
    void connectedChanged(bool connected);

    void roomTemperatureChanged(double roomTemperature);
    void targetRoomTemperatureChanged(double targetRoomTemperature);
    void waterTankTopTemperatureChanged(double waterTankTopTemperature);
    void bufferTankTemperatureChanged(double bufferTankTemperature);
    void totalAccumulatedHeatingEnergyChanged(double totalAccumulatedHeatingEnergy);
    void totalAccumulatedElectricalEnergyChanged(double totalAccumulatedElectricalEnergy);
    void heatPumpStateChanged(HeatpumpState heatPumpState);
    void heatMeterPowerConsumptionChanged(double heatMeterPowerConsumption);
    void energyMeterPowerConsumptionChanged(double energyMeterPowerConsumption);
    void actualExcessEnergySmartHomeChanged(double actualExcessEnergySmartHome);
    void actualExcessEnergySmartHomeElectricityMeterChanged(double actualExcessEnergySmartHomeElectricityMeter);
    void actualOutdoorTemperatureChanged(double actualOutdoorTemperature);

private slots:
    void onModbusError();
    void onReceivedHoldingRegister(int slaveAddress, int modbusRegister, const QVector<quint16> &value);

};

#endif // MTEC_H