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#ifndef MODBUSTCPMASTER_H
#define MODBUSTCPMASTER_H

#include <QObject>
#include <QHostAddress>
#include <QtSerialBus>
#include <QTimer>
#include <QUuid>

class ModbusTCPMaster : public QObject
{
    Q_OBJECT
public:
    explicit ModbusTCPMaster(const QHostAddress &hostAddress, uint port, QObject *parent = nullptr);
    ~ModbusTCPMaster();

    bool connectDevice();
    bool connected();
    void setNumberOfRetries(int number);
    void setTimeout(int timeout);

    QUuid readCoil(uint slaveAddress, uint registerAddress, uint size = 1);
    QUuid readDiscreteInput(uint slaveAddress, uint registerAddress, uint size = 1);
    QUuid readInputRegister(uint slaveAddress, uint registerAddress, uint size = 1);
    QUuid readHoldingRegister(uint slaveAddress, uint registerAddress, uint size = 1);

    QUuid writeCoil(uint slaveAddress, uint registerAddress, bool status);
    QUuid writeCoils(uint slaveAddress, uint registerAddress, const QVector<quint16> &values);

    QUuid writeHoldingRegister(uint slaveAddress, uint registerAddress, quint16 value);
    QUuid writeHoldingRegisters(uint slaveAddress, uint registerAddress, const QVector<quint16> &values);

    QHostAddress hostAddress();
    uint port();
    bool setHostAddress(const QHostAddress &hostAddress);
    bool setPort(uint port);

private:
    QTimer *m_reconnectTimer = nullptr;
    QModbusTcpClient *m_modbusTcpClient;

private slots:
    void onReconnectTimer();

    void onModbusErrorOccurred(QModbusDevice::Error error);
    void onModbusStateChanged(QModbusDevice::State state);

signals:
    void connectionStateChanged(bool status);

    void writeRequestExecuted(const QUuid &requestId, bool success);
    void writeRequestError(const QUuid &requestId, const QString &error);

    void receivedCoil(uint slaveAddress, uint modbusRegister, const QVector<quint16> &values);
    void receivedDiscreteInput(uint slaveAddress, uint modbusRegister, const QVector<quint16> &values);
    void receivedHoldingRegister(uint slaveAddress, uint modbusRegister, const QVector<quint16> &values);
    void receivedInputRegister(uint slaveAddress, uint modbusRegister, const QVector<quint16> &values);
};

#endif // MODBUSTCPMASTER_H