#pragma once

/*  MOUNT CONTROL COMPONENTS LIBRARY  */


/*  MOUNT TELEMETRY OBJECT CONCEPT AND DEFAULT IMPLEMENTATION  */

#include <chrono>

namespace mcc
{


namespace traits
{

template <typename T>
concept mcc_mount_telemetry_c = requires(T t) {
    typename T::mount_telemetry_data_t;
    { t.update() } -> std::same_as<typename T::mount_telemetry_data_t>;
};

}  // namespace traits


class MccMountTelemetry
{
public:
    // mount current telemetry data: time, position and related quantities
    struct mount_telemetry_data_t {
        typedef double mnt_coord_t;
        typedef double mnt_speed_t;
        typedef double time_point_t;

        // time-related
        std::chrono::system_clock::time_point utc;
        time_point_t mjd;  // modified Julian date
        time_point_t ut1;
        time_point_t tt;
        time_point_t siderTime;  // sideral time (in radians)

        // apparent target (user-input) current coordinates (in radians)
        mnt_coord_t tagRA, tagDEC;
        mnt_coord_t tagHA;
        mnt_coord_t tagAZ, tagZD;
        mnt_coord_t tagPA;  // paralactic angle

        // encoder-measured current mount coordinates (in radians)
        mnt_coord_t mntRA, mntDEC;
        mnt_coord_t mntHA;
        mnt_coord_t mntAZ, mntZD;
        mnt_coord_t mntPA;

        // encoder-measured (non-corrected for PCS) current mount position and moving speed (in radians, radians/s)
        // X - HA, Y - DEC for equatorial-type mount; X - AZ, Y - ZD for horizontal-type one
        mnt_coord_t mntPosX, mntPosY;
        mnt_speed_t mntSpeedX, mntSpeedY;

        // current refraction coefficient (for tagZD)
        mnt_coord_t currRefr;

        // PCS (pointing correction system) corrections
        // X - HA, Y - DEC for equatorial-type mount; X - AZ, Y - ZD for horizontal-type one
        mnt_coord_t pcsX, pcsY;
    };

    mount_telemetry_data_t update()
    {
        return _data;
    }

protected:
    mount_telemetry_data_t _data;
};

}  // namespace mcc