eive-obsw/mission/acs/str/ArcsecJsonParamBase.h

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#ifndef BSP_Q7S_DEVICES_STARTRACKER_ARCSECJSONPARAMBASE_H_
#define BSP_Q7S_DEVICES_STARTRACKER_ARCSECJSONPARAMBASE_H_
#include <mission/acs/str/strHelpers.h>
#include <filesystem>
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#include <fstream>
#include <nlohmann/json.hpp>
#include "eive/resultClassIds.h"
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#include "fsfw/returnvalues/returnvalue.h"
using json = nlohmann::json;
/**
* @brief Base class for creation of parameter configuration commands. Reads parameter set
* from a json file located on the filesystem and generates the appropriate command
* to apply the parameters to the star tracker software.
*
* @author J. Meier
*/
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class ArcsecJsonParamBase {
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public:
static const uint8_t INTERFACE_ID = CLASS_ID::ARCSEC_JSON_BASE;
//! [EXPORT] : [COMMENT] Specified json file does not exist
static const ReturnValue_t JSON_FILE_NOT_EXISTS = MAKE_RETURN_CODE(1);
//! [EXPORT] : [COMMENT] Requested set does not exist in json file
static const ReturnValue_t SET_NOT_EXISTS = MAKE_RETURN_CODE(2);
//! [EXPORT] : [COMMENT] Requested parameter does not exist in json file
static const ReturnValue_t PARAM_NOT_EXISTS = MAKE_RETURN_CODE(3);
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virtual ~ArcsecJsonParamBase() = default;
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/**
* @brief Constructor
*
* @param fullname Name with absolute path of json file containing the parameters to set.
*/
ArcsecJsonParamBase(std::string setName);
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/**
* @brief Initializes the properties json object and the set json object
*
* @param fullname Name including absolute path to json file
* @param setName The name of the set to work on
*
* @param return JSON_FILE_NOT_EXISTS if specified file does not exist, otherwise
* returnvalue::OK
*/
ReturnValue_t init(const std::string filename);
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/**
* @brief Fills a buffer with a parameter set
*
* @param fullname The name including the absolute path of the json file containing the
* parameter set.
* @param buffer Pointer to the buffer the command will be written to
*/
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ReturnValue_t create(uint8_t* buffer);
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/**
* @brief Returns the size of the parameter command.
*/
virtual size_t getSize() = 0;
protected:
/**
* @brief Reads the value of a parameter from a json set
*
* @param name The name of the parameter
* @param value The string representation of the read value
*
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* @return returnvalue::OK if successful, otherwise PARAM_NOT_EXISTS
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*/
ReturnValue_t getParam(const std::string name, std::string& value);
/**
* @brief Converts empty string which is equal to define a value as zero.
*/
void convertEmpty(std::string& value);
/**
* @brief This function adds a float represented as string to a buffer
*
* @param value The float in string representation to add
* @param buffer Pointer to the buffer the float will be written to
*/
void addfloat(const std::string value, uint8_t* buffer);
/**
* @brief This function adds a uint8_t represented as string to a buffer
*
* @param value The uint8_t in string representation to add
* @param buffer Pointer to the buffer the uint8_t will be written to
*/
void adduint8(const std::string value, uint8_t* buffer);
/**
* @brief This function adds a int16_t represented as string to a buffer
*
* @param value The int16_t in string representation to add
* @param buffer Pointer to the buffer the int16_t will be written to
*/
void addint16(const std::string value, uint8_t* buffer);
/**
* @brief This function adds a uint16_t represented as string to a buffer
*
* @param value The uint16_t in string representation to add
* @param buffer Pointer to the buffer the uint16_t will be written to
*/
void adduint16(const std::string value, uint8_t* buffer);
/**
* @brief This function adds a uint32_t represented as string to a buffer
*
* @param value The uint32_t in string representation to add
* @param buffer Pointer to the buffer the uint32_t will be written to
*/
void adduint32(const std::string value, uint8_t* buffer);
void addSetParamHeader(uint8_t* buffer, uint8_t setId);
private:
json properties;
json set;
std::string setName;
/**
* @brief This function must be implemented by the derived class to define creation of a
* parameter command.
*/
virtual ReturnValue_t createCommand(uint8_t* buffer) = 0;
void createJsonObject(const std::string fullname);
/**
* @brief Extracts the json set object form the json file
*
* @param setName The name of the set to create the json object from
*/
ReturnValue_t initSet();
};
#endif /* BSP_Q7S_DEVICES_STARTRACKER_ARCSECJSONPARAMBASE_H_ */