#ifndef CONFIG_STORE_H
#define CONFIG_STORE_H

#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>

#define DEVICE_NAME_MAX_LEN      32
#define DEVICE_CSV_MAX_LEN       64
#define MAX_VIRTUAL_DEVICES      3

typedef enum
{
    MB_RTU_PARITY_NONE = 0,
    MB_RTU_PARITY_EVEN,
    MB_RTU_PARITY_ODD
} modbus_rtu_parity_t;

typedef struct
{
    uint32_t baud_rate;
    modbus_rtu_parity_t parity;
    uint8_t stop_bits;      /* 1 or 2 */
    uint8_t uart_num;       /* UART_NUM_0/1/2 as integer */
    int tx_pin;
    int rx_pin;
    int de_pin;             /* -1 if unused / auto-direction shield */
} modbus_rtu_settings_t;

typedef struct
{
    uint8_t device_count;
} modbus_settings_t;

typedef struct
{
    bool enabled;
    uint8_t unit_id;
    char name[DEVICE_NAME_MAX_LEN];
    char csv[DEVICE_CSV_MAX_LEN];
} virtual_device_settings_t;

typedef struct
{
    modbus_rtu_settings_t rtu;
    modbus_settings_t modbus;
    virtual_device_settings_t devices[MAX_VIRTUAL_DEVICES];
} device_config_t;

void config_store_set_defaults(device_config_t *cfg);
bool config_store_load(const char *filename, device_config_t *cfg);

#endif /* CONFIG_STORE_H */