/**
 * @file config.h
 * @brief Config module for LED controller - handles read and store of persistent data
 */

#ifndef CONFIG_H
#define CONFIG_H

#include "esp_err.h"

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

/**
 * @brief Configuration structure stored in NVS
 */
typedef struct
{
    int8_t led_pin_strip_a;   // GPIO pin for LED strip A (-1 = not configured)
    int8_t led_pin_strip_b;   // GPIO pin for LED strip B (-1 = not configured)
    int8_t led_count_strip_a; // LED count for LED strip A (-1 = not configured)
    int8_t led_count_strip_b; // LED count for LED strip B (-1 = not configured)
    int8_t pwm_pin;           // GPIO pin for PWM input (-1 = not configured)
    int8_t localBtn_pin;      // GPIO pin for local btn input (-1 = not configured)
    uint32_t magic;           // Magic number to validate config (0xDEADBEEF) //TODO: use sha256
} config_t;

/**
 * @brief Initialize the config system
 * Loads configuration from NVS and initializes subsystems
 * @return ESP_OK on success
 */
esp_err_t config_init(void);

/**
 * @brief Get current configuration
 * @param Pointer to current configuration (read-only)
 */
void config_get_config(config_t *const cnf);

/**
 * @brief Update configuration and save to NVS
 * @param config New configuration
 * @return ESP_OK on success
 */
esp_err_t config_update_config(const config_t *config);

/**
 * @brief Reset configuration to defaults
 * @return ESP_OK on success
 */
esp_err_t config_reset_config(void);

#endif // CONFIG_H