#ifndef STORAGE_INTERFACE_H
#define STORAGE_INTERFACE_H
#include <Arduino.h>
#include <EEPROM.h>

// based on https://docs.arduino.cc/learn/programming/eeprom-guide/

class Storage_interface
{
private:

    static constexpr uint8_t OFFSET_MEASURES_SCH = 1, OFFSET_NB_PHOTO_SENSOR = 2, OFFSET_NB_TEMP_SENSOR = 3, OFFSET_PHOTO_MEASURES_SIZE = 4, OFFSET_TEMP_MEASURES_SIZE = 5, OFFSET_NB_MEASURES = 6, OFFSET_NEXT_PACKAGE = 8, OFFSET_START_DATA_MEASURES = 10; // unit in byte 
    static constexpr uint16_t MEGA_2560_EEPROM_SIZE = 4096; // bytes

    void clear_eeprom_at(uint16_t idx);

    /* Getter setter EEPROM header functions */
    void inline get_measure_sch(uint16_t header_idx, uint8_t *schedule);
    void inline set_measure_sch(uint16_t header_idx, uint8_t *schedule);
    void inline get_nb_photo_sensor(uint16_t header_idx, uint8_t *nb_photo_sensor);
    void inline set_nb_photo_sensor(uint16_t header_idx, uint8_t *nb_photo_sensor);
    void inline get_nb_temp_sensor(uint16_t header_idx, uint8_t *nb_temp_sensor);
    void inline set_nb_temp_sensor(uint16_t header_idx, uint8_t *nb_temp_sensor);
    void inline get_photo_meas_size(uint16_t header_idx, uint8_t *photo_meas_size);
    void inline set_photo_meas_size(uint16_t header_idx, uint8_t *photo_meas_size);
    void inline get_temp_meas_size(uint16_t header_idx, uint8_t *temp_meas_siz);
    void inline set_temp_meas_size(uint16_t header_idx, uint8_t *temp_meas_size);
    void inline get_nb_measures(uint16_t header_idx, uint16_t *nb_measures);
    void inline set_nb_measures(uint16_t header_idx, uint16_t *nb_measures);
    void inline get_next_package(uint16_t header_idx, uint16_t *next_package);
    void inline set_next_package(uint16_t header_idx, uint16_t *next_package);
    
    // Following commented function are uncessary for now
    // void inline get_start_data_measure(uint16_t header_idx, uint16_t *start_data_measure);
    // void inline set_start_data_measure(uint16_t header_idx, uint16_t *start_data_measure);

    uint16_t get_last_header_nbpackage(uint16_t* last_header_idx);
    uint16_t get_idx_package(uint16_t package_number);

    void write_csv_header(bool* timestamp, bool* photo_sensor, bool* temp_sensor, uint8_t* nb_photo_sensor, uint8_t* nb_temp_sensor);


public:

    Storage_interface();
    ~Storage_interface();

    // TODO : Change temperature type, uint to int for negative values
    // Warning : temperature values needs to be positive

    uint16_t get_nb_package();
    void clear_eeprom();
    void add_last_package(bool timestamp, bool is_final_set, bool photo_sensor, bool temp_sensor, uint8_t timestamp_schedule, uint8_t nb_photo_sensor, uint8_t nb_temp_sensor, uint8_t photo_size, uint8_t temp_size);
    void add_measure(uint8_t* photo_values, uint8_t* temp_values, uint32_t timestamp, uint8_t nb_photo, uint8_t nb_temp);
    void get_measure(uint8_t* array_photo_val, uint8_t* array_temp_val, uint32_t* timestamp, uint8_t* nb_photo, uint8_t* nb_temp, uint16_t package_number, uint16_t measure_number);
    void get_measure(uint8_t* array_photo_val, uint8_t* array_temp_val, uint32_t* timestamp, uint8_t* nb_photo, uint8_t* nb_temp, uint16_t measure_number);
    void get_measure(uint8_t* array_photo_val, uint8_t* array_temp_val, uint32_t* timestamp, uint8_t* nb_photo, uint8_t* nb_temp);

    void get_struct(uint16_t offset, bool* timestamp, bool* is_final_set, bool* photo_sensor, bool* temp_sensor, uint8_t* timestamp_schedule, uint8_t* nb_photo_sensor, uint8_t* nb_temp_sensor, uint8_t* photo_size, uint8_t* temp_size, uint16_t* p_next_package, uint16_t* nb_measures);
    void set_struct(uint16_t offset, bool timestamp, bool is_final_set, bool photo_sensor, bool temp_sensor, uint8_t timestamp_schedule, uint8_t nb_photo_sensor, uint8_t nb_temp_sensor, uint8_t photo_size, uint8_t temp_size);
    void print_nb_package_measure();

    void upload_csv();


    // The function dont check if the stored measure structure match with the header
    // template< typename T, typename TT>
    // void put_measure(T* photo_values, TT* temp_values, uint32_t timestamp, uint8_t nb_photo, uint8_t nb_temp){
    //     uint16_t p_last_header, free_space, idx, nb_measures;

    //     // this->get_last_header_nbpackage(p_last_header);

    //     free_space = EEPROM.read(p_last_header + OFFSET_NEXT_PACKAGE);
    //     // this->get_next_package(p_last_header, &free_space);
        
    //     EEPROM.write(p_last_header + OFFSET_NB_MEASURES, EEPROM.read(p_last_header + OFFSET_NB_MEASURES) + 1);
    //     // this->get_nb_measures(p_last_header, &nb_measures);
    //     // nb_measures += 1;
    //     // this->set_nb_measures(p_last_header, &nb_measures);

    //     EEPROM.put(free_space, timestamp);
    //     idx = p_last_header + sizeof(uint32_t);
    //     for(int i = 0; i < nb_photo; i++, idx += sizeof(T)){
    //         EEPROM.put(idx, photo_values[i]);
    //     }
    //     for(int i = 0; i < nb_temp; i++, idx += sizeof(TT)){
    //         EEPROM.put(idx, temp_values[i]);
    //     }
    // }
};

#endif