/*!
 * \file AlignmentSubsystemForDrivers.h
 *
 * \author Roger James
 * \date 13th November 2013
 *
 * This file provides a shorthand way for drivers to include all the
 * functionality they need to use the INDI Alignment Subsystem
 * Clients should inherit this class alongside INDI::Telescope or a similar class
 */

#pragma once

#include "indicom.h"

#include "MapPropertiesToInMemoryDatabase.h"
#include "MathPluginManagement.h"
#include "TelescopeDirectionVectorSupportFunctions.h"

namespace INDI
{
namespace AlignmentSubsystem
{
/*!
* \class AlignmentSubsystemForDrivers
* \brief This class encapsulates all the alignment subsystem classes that are useful to driver implementations.
* Drivers should inherit from this class.
*/
class AlignmentSubsystemForDrivers : public MapPropertiesToInMemoryDatabase,
    public MathPluginManagement,
    public TelescopeDirectionVectorSupportFunctions
{
    public:
        /// \brief Default constructor
        AlignmentSubsystemForDrivers();
        /// \brief Virtual destructor
        virtual ~AlignmentSubsystemForDrivers() {}

        /** \brief Initialize alignment subsystem properties. It is recommended to call this function within initProperties() of your primary device
           * \param[in] pTelescope Pointer to the child INDI::Telecope class
          */
        void InitAlignmentProperties(Telescope *pTelescope);

        /** \brief Call this function from within the ISNewBlob processing path. The function will
           * handle any alignment subsystem related properties.
           * \param[in] pTelescope Pointer to the child INDI::Telecope class
           * \param[in] name vector property name
           * \param[in] sizes
           * \param[in] blobsizes
           * \param[in] blobs
           * \param[in] formats
           * \param[in] names
           * \param[in] n
          */
        void ProcessAlignmentBLOBProperties(Telescope *pTelescope, const char *name, int sizes[], int blobsizes[],
                                            char *blobs[], char *formats[], char *names[], int n);

        /** \brief Call this function from within the ISNewNumber processing path. The function will
           * handle any alignment subsystem related properties.
           * \param[in] pTelescope Pointer to the child INDI::Telecope class
           * \param[in] name vector property name
           * \param[in] values value as passed by the client
           * \param[in] names names as passed by the client
           * \param[in] n number of values and names pair to process.
          */
        void ProcessAlignmentNumberProperties(Telescope *pTelescope, const char *name, double values[], char *names[],
                                              int n);

        /** \brief Call this function from within the ISNewSwitch processing path. The function will
           * handle any alignment subsystem related properties.
           * \param[in] pTelescope Pointer to the child INDI::Telecope class
           * \param[in] name vector property name
           * \param[in] states states as passed by the client
           * \param[in] names names as passed by the client
           * \param[in] n number of values and names pair to process.
          */
        void ProcessAlignmentSwitchProperties(Telescope *pTelescope, const char *name, ISState *states, char *names[],
                                              int n);

        /** \brief Call this function from within the ISNewText processing path. The function will
           * handle any alignment subsystem related properties. This only text property at the moment is contained in the
           * config file so this will normally only have work to do when the config file is loaded.
           * \param[in] pTelescope Pointer to the child INDI::Telecope class
           * \param[in] name vector property name
           * \param[in] texts texts as passed by the client
           * \param[in] names names as passed by the client
           * \param[in] n number of values and names pair to process.
          */
        void ProcessAlignmentTextProperties(Telescope *pTelescope, const char *name, char *texts[], char *names[], int n);

        /** \brief Call this function to save persistent alignment related properties.
           * This function should be called from within the saveConfigItems function of your driver.
           * \param[in] fp File pointer passed into saveConfigItems
          */
        void SaveAlignmentConfigProperties(FILE *fp);

        /** \brief Adds an alignment point to the model database, usually called from Sync.
         * \param[in] actualRA actual Right Ascension in decimal hours
         * \param[in] actualDec actual Declination in decimal degrees
         * \param[in] mountRA Right Ascension where the mount thinks it is in decimal hours
         * \param[in] mountDec Declination where the mount thinks it is in decimal degrees
         * \return true if the alignment point was added to the database, otherwise false
         *
         * This will return false if either the alignment point was already added, or if the location
         * is not set. Call UpdateLocation to set the current location.
         */
        bool AddAlignmentEntryEquatorial(double actualRA, double actualDec, double mountRA, double mountDec,
                                         double JD = ln_get_julian_from_sys());

        /** \brief Converts an actual sky location to coordinates to send to the mount, usually called
         * in Goto.
         * \param[in] actualRA actual Right Ascension in decimal hours
         * \param[in] actualDec actual Declination in decimal degrees
         * \param[out] mountRA Right Ascension to send to the mount
         * \param[out] mountDec Declination to send to the mount
         * \return true if we converted actualRA/actualDec to mountRa/mountDec, otherwise false
         *
         * This will return false if we have fewer than 2 alignment points added, or if the location
         * is not set. Call UpdateLocation to set the current location.
         */
        bool SkyToTelescopeEquatorial(double actualRA, double actualDec, double &mountRA, double &mountDec,
                                      double JD = ln_get_julian_from_sys());

        /** \brief Converts a mount location to actual sky coordinates, usually called in ReadScopeStatus.
         * \param[in] mountRA Right Ascension where the mount thinks it is in decimal hours
         * \param[in] mountDec Declination where the mount thinks it is in decimal degrees
         * \param[out] actualRA actual Right Ascension in decimal hours
         * \param[out] actualDec actual Declination in decimal degrees
         * \return true if we converted mountRa/mountDec to actualRA/actualDec, otherwise false
         *
         * This will return false if we have fewer than 2 alignment points added, or if the location
         * is not set. Call UpdateLocation to set the current location.
         */
        bool TelescopeEquatorialToSky(double mountRA, double mountDec, double &actualRA, double &actualDec,
                                      double JD = ln_get_julian_from_sys());

        /** \brief Adds an alignment point to the model database, usually called from Sync.
         * \param[in] actualRA actual Right Ascension in decimal hours
         * \param[in] actualDec actual Declination in decimal degrees
         * \param[in] mountAlt Altitude where the mount thinks it is in decimal degrees
         * \param[in] mountAz Azimuth where the mount thinks it is in decimal degrees
         * \return true if the alignment point was added to the database, otherwise false
         *
         * This will return false if either the alignment point was already added, or if the location
         * is not set. Call UpdateLocation to set the current location.
         */
        bool AddAlignmentEntryAltAz(double actualRA, double actualDec, double mountAlt, double mountAz,
                                    double JD = ln_get_julian_from_sys());

        /** \brief Converts an actual sky location to coordinates to send to the mount, usually called
         * in Goto.
         * \param[in] actualRA actual Right Ascension in decimal hours
         * \param[in] actualDec actual Declination in decimal degrees
         * \param[out] mountAlt Altitude to send to the mount
         * \param[out] mountAz Azimuth to send to the mount
         * \return true if we converted actualRA/actualDec to mountAlt/mountAz, otherwise false
         *
         * This will return false if we have fewer than 2 alignment points added, or if the location
         * is not set. Call UpdateLocation to set the current location.
         */
        bool SkyToTelescopeAltAz(double actualRA, double actualDec, double &mountAlt, double &mountAz,
                                  double JD = ln_get_julian_from_sys());

        /** \brief Converts a mount location to actual sky coordinates, usually called in ReadScopeStatus.
         * \param[in] mountAlt Altitude where the mount thinks it is in decimal degrees
         * \param[in] mountAz Azimuth where the mount thinks it is in decimal degrees
         * \param[out] actualRA actual Right Ascension in decimal hours
         * \param[out] actualDec actual Declination in decimal degrees
         * \return true if we converted mountRa/mountDec to actualRA/actualDec, otherwise false
         *
         * This will return false if we have fewer than 2 alignment points added, or if the location
         * is not set. Call UpdateLocation to set the current location.
         */
        bool TelescopeAltAzToSky(double mountAlt, double mountAz, double &actualRA, double &actualDec,
                                  double JD = ln_get_julian_from_sys());

    private:
        /** \brief This static function is registered as a load database callback with
           * the in memory database module. This registration is performed in the constructor of
           * of this class. The callback is called whenever the database is
           * is loaded or reloaded, by default it calls the Initialise function of the MathPluginManagment module.
           * \param[in] ThisPointer Pointer to the instance of this class which registered the callback
          */
        static void MyDatabaseLoadCallback(void *ThisPointer);
};

} // namespace AlignmentSubsystem
} // namespace INDI
