/********************************************
 *  masterMacsController.h
 *
 * PMAC V3 controller driver based on the asynMotorController class
 *
 * Stefan Mathis, September 2024
 ********************************************/

#ifndef masterMacsController_H
#define masterMacsController_H
#include "sinqAxis.h"
#include "sinqController.h"
#include <memory>

// Forward declaration of the controller class to resolve the cyclic dependency
// between the controller and the axis .h-file. See
// https://en.cppreference.com/w/cpp/language/class.
class HIDDEN masterMacsAxis;

struct HIDDEN masterMacsControllerImpl;

class HIDDEN masterMacsController : public sinqController {

  public:
    /**
     * @brief Construct a new masterMacsController object
     *
     * @param portName            See sinqController constructor
     * @param ipPortConfigName    See sinqController constructor
     * @param numAxes             See sinqController constructor
     * @param movingPollPeriod    See sinqController constructor
     * @param idlePollPeriod      See sinqController constructor
     * @param comTimeout          When trying to communicate with the device,
    the underlying asynOctetSyncIO interface waits for a response until this
    time (in seconds) has passed, then it declares a timeout.
     */
    masterMacsController(const char *portName, const char *ipPortConfigName,
                         int numAxes, double movingPollPeriod,
                         double idlePollPeriod, double comTimeout);

    /**
     * @brief Delete the copy and copy assignment constructors, because this
     * class should not be copied (it is tied to hardware!)
     */
    masterMacsController(const masterMacsController &) = delete;
    masterMacsController &operator=(const masterMacsController &) = delete;

    /**
     * @brief Overloaded version of the sinqController version
     *
     * @param pasynUser
     * @param value
     * @return asynStatus
     */
    asynStatus readInt32(asynUser *pasynUser, epicsInt32 *value);

    /**
     * @brief Get the axis object
     *
     * @param pasynUser           Specify the axis via the asynUser
     * @return masterMacsAxis*        If no axis could be found, this is a
     * nullptr
     */
    masterMacsAxis *getMasterMacsAxis(asynUser *pasynUser);

    /**
     * @brief Get the axis object
     *
     * @param axisNo              Specify the axis via its index
     * @return masterMacsAxis*        If no axis could be found, this is a
     * nullptr
     */
    masterMacsAxis *getMasterMacsAxis(int axisNo);

    /**
     * @brief Overloaded function of sinqController
     *
     * The function is overloaded to allow resetting the node and changing the
     * operation mode.
     *
     * @param pasynUser           Specify the axis via the asynUser
     * @param value               New value
     * @return asynStatus
     */
    virtual asynStatus writeInt32(asynUser *pasynUser, epicsInt32 value);

    /**
     * @brief Send a command to the hardware (S mode)
     *
     * @param axisNo              Axis to which the command should be send
     * @param tcpCmd              TCP command key
     * @param payload             Value send to MasterMACS.
     * @return asynStatus
     */
    asynStatus write(int axisNo, int tcpCmd, const char *payload,
                     double comTimeout = -1.0);

    /**
     * @brief Send a command to the hardware and receive a response (R mode)
     *
     * @param axisNo              Axis to which the command should be send
     * @param tcpCmd              TCP command key
     * @param response            Buffer for the response. This buffer is
     * expected to have the size MAXBUF_.
     * @return asynStatus
     */
    asynStatus read(int axisNo, int tcpCmd, char *response,
                    double comTimeout = -1.0);

    /**
     * @brief Send a command to the hardware (R or S mode) and receive a
     * response in the former case.
     *
     * This function is the internal implementation of the write and read
     * methods.
     *
     * @param axisNo              Axis to which the command should be send
     * @param tcpCmd              TCP command key
     * @param payload             Value send to MasterMACS.
     * @param response            Buffer for the response. This buffer is
     * expected to have the size MAXBUF_.
     * @return asynStatus
     */
    asynStatus writeRead(int axisNo, int tcpCmd, const char *payload,
                         char *response, double comTimeout = -1.0);

    /**
     * @brief Parse "fullResponse" received upon sending "fullCommand".
     *
     * Returns asynSuccess if the response is valid and asynError otherwise.
     * This is an internal function used in writeRead.
     *
     * @param fullCommand       Command which was send to the controller
     * @param fullResponse      Response which was received
     * @param drvMessageText    Buffer for messages send to the user
     * @param valueStart        If a payload was included in fullResponse,
     * return the index where it starts.
     * @param valueStop         If a payload was included in fullResponse,
     * return the index where it stops.
     * @param axisNo            Axis to which the command should be send
     * @param tcpCmd            TCP command key
     * @param isRead            true, if a payload is expect as part of the
     * answer
     * @return asynStatus
     */
    asynStatus parseResponse(const char *fullCommand, const char *fullResponse,
                             char *drvMessageText, int *valueStart,
                             int *valueStop, int axisNo, int tcpCmd,
                             bool isRead);

    // Set the maximum buffer size. This is an empirical value which must be
    // large enough to avoid overflows for all commands to the device /
    // responses from it.
    static const uint32_t MAXBUF_ = 200;

    /**
     * @brief Get the communication timeout used in the writeRead command
     *
     * @return double Timeout in seconds
     */
    double comTimeout();

    // Accessors for additional PVs
    int nodeReset();

  private:
    std::unique_ptr<masterMacsControllerImpl> pMasterMacsC_;
};

#endif /* masterMacsController_H */