#pragma once

// #include <mcc_defaults.h>
// #include <mcc_generics.h>

#include <mcc/mcc_angle.h>
#include <mcc/mcc_coordinate.h>

#include <LibSidServo/sidservo.h>

// #include "LibSidServo/sidservo.h"
#include "asibfm700_common.h"


namespace asibfm700
{

/*  error codes enum definition  */

enum class AsibFM700ServoControllerErrorCode : int {
    // error codes from sidservo library
    ERROR_OK = MCC_E_OK,
    ERROR_FATAL = MCC_E_FATAL,
    ERROR_BADFORMAT = MCC_E_BADFORMAT,
    ERROR_ENCODERDEV = MCC_E_ENCODERDEV,
    ERROR_MOUNTDEV = MCC_E_MOUNTDEV,
    ERROR_FAILED = MCC_E_FAILED,
    // my codes ...
    ERROR_POLLING_TIMEOUT,
    ERROR_NULLPTR
};

// error category
struct AsibFM700ServoControllerErrorCategory : public std::error_category {
    const char* name() const noexcept;
    std::string message(int ec) const;

    static const AsibFM700ServoControllerErrorCategory& get();
};


static inline std::error_code make_error_code(AsibFM700ServoControllerErrorCode ec)
{
    return std::error_code(static_cast<int>(ec), AsibFM700ServoControllerErrorCategory::get());
}

}  // namespace asibfm700


namespace std
{

template <>
class is_error_code_enum<asibfm700::AsibFM700ServoControllerErrorCode> : public true_type
{
};

}  // namespace std


namespace asibfm700
{

class AsibFM700ServoController
{
public:
    static constexpr mcc::MccMountType hwMountType{mcc::MccMountType::FORK_TYPE};

    static constexpr std::string_view hardwareName = "Sidereal-ServoControllerII";

    typedef std::error_code error_t;

    enum class hardware_movement_state_t : int {
        HW_MOVE_ERROR = -1,
        HW_MOVE_STOPPED = 0,
        HW_MOVE_STOPPING,
        HW_MOVE_SLEWING,
        HW_MOVE_ADJUSTING,
        HW_MOVE_TRACKING,
        HW_MOVE_GUIDING,
        HW_MOVE_UNKNOWN
    };

    // typedef AsibFM700ServoControllerMovementState hardware_movement_state_t;

    struct hardware_state_t {
        mcc::impl::MccGenXY XY{0.0, 0.0}, speedXY{0.0, 0.0};
        hardware_movement_state_t movementState{hardware_movement_state_t::HW_MOVE_STOPPED};
    };


    struct hardware_config_t {
        // the 'char*' fields from conf_t:
        //    wrap it to std::string
        std::string MountDevPath;
        std::string EncoderDevPath;
        std::string EncoderXDevPath;
        std::string EncoderYDevPath;

        conf_t devConfig;                   // devices paths and PIDs parameters
        hardware_configuration_t hwConfig;  // EEPROM-located configuration

        std::chrono::milliseconds pollingInterval{300};   // hardware polling interval
        std::chrono::milliseconds pollingTimeout{30000};  // hardware polling timeout
    };

    /*  constructors and destructor  */

    AsibFM700ServoController();

    AsibFM700ServoController(hardware_config_t config);

    AsibFM700ServoController(const AsibFM700ServoController&) = delete;
    AsibFM700ServoController& operator=(const AsibFM700ServoController&) = delete;

    AsibFM700ServoController(AsibFM700ServoController&&) = default;
    AsibFM700ServoController& operator=(AsibFM700ServoController&&) = default;

    virtual ~AsibFM700ServoController();

    /*  public methods  */

    error_t hardwareSetState(hardware_state_t const& state);
    error_t hardwareGetState(hardware_state_t* state);

    error_t hardwareInit();

    error_t hardwareShutdown();

    void hardwareUpdateConfig(conf_t cfg);

    // save config to EEPROM
    error_t hardwareUpdateConfig(hardware_configuration_t cfg);
    // load config from EEPROM
    error_t hardwareUpdateConfig();

    hardware_config_t getHardwareConfig() const;

protected:
    hardware_config_t _hardwareConfig;

    std::unique_ptr<std::mutex> _setStateMutex;
};

}  // namespace asibfm700

template <>
struct std::formatter<asibfm700::AsibFM700ServoController::hardware_movement_state_t, char>
    : std::formatter<std::string_view> {
    auto format(asibfm700::AsibFM700ServoController::hardware_movement_state_t e, auto& ctx) const
    {
        return formatter<std::string_view>::format(
            e == asibfm700::AsibFM700ServoController::hardware_movement_state_t::HW_MOVE_ERROR       ? "ERROR"
            : e == asibfm700::AsibFM700ServoController::hardware_movement_state_t::HW_MOVE_STOPPED   ? "STOPPED"
            : e == asibfm700::AsibFM700ServoController::hardware_movement_state_t::HW_MOVE_STOPPING  ? "STOPPING"
            : e == asibfm700::AsibFM700ServoController::hardware_movement_state_t::HW_MOVE_SLEWING   ? "SLEWING"
            : e == asibfm700::AsibFM700ServoController::hardware_movement_state_t::HW_MOVE_ADJUSTING ? "ADJUSTING"
            : e == asibfm700::AsibFM700ServoController::hardware_movement_state_t::HW_MOVE_TRACKING  ? "TRACKING"
            : e == asibfm700::AsibFM700ServoController::hardware_movement_state_t::HW_MOVE_GUIDING   ? "GUIDING"
                                                                                                     : "UNKNOWN",
            ctx);
    }
};


static_assert(mcc::mcc_hardware_c<asibfm700::AsibFM700ServoController>, "!!!");