/*
 * SPDX-FileCopyrightText: 2025 Kozmotronik Tech
 *
 * SPDX-License-Identifier: MIT
 */

#pragma once

#include <stdint.h>
#include "esp_err.h"
#include "nvs_flash.h"
#include "nvs.h"
#include "relay_chn_types.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @brief Initialize NVS storage for relay channels.
 * 
 * @attention Before calling this function, make sure the NVS flash is initialised 
 * using either the nvs_flash_init() function for the default NVS partition or the 
 * nvs_flash_init_partition() function for a custom partition.
 *
 * @return ESP_OK on success, error code otherwise.
 */
esp_err_t relay_chn_nvs_init(void);

/**
 * @brief Store relay channel direction in NVS.
 *
 * @param[in] ch Channel number.
 * @param[in] direction Direction to store.
 * @return ESP_OK on success, error code otherwise.
 */
esp_err_t relay_chn_nvs_set_direction(uint8_t ch, relay_chn_direction_t direction);

/**
 * @brief Retrieve relay channel direction from NVS.
 *
 * @param[in] ch Channel number.
 * @param[out] direction Pointer to store retrieved direction.
 * @return ESP_OK on success, error code otherwise.
 */
esp_err_t relay_chn_nvs_get_direction(uint8_t ch, relay_chn_direction_t *direction);

#ifdef RELAY_CHN_ENABLE_TILTING
/**
 * @brief Store tilt sensitivity in NVS.
 *
 * @param[in] ch Channel number.
 * @param[in] sensitivity Sensitivity value to store.
 * @return ESP_OK on success, error code otherwise.
 */
esp_err_t relay_chn_nvs_set_tilt_sensitivity(uint8_t ch, uint8_t sensitivity);

/**
 * @brief Retrieve tilt sensitivity from NVS.
 *
 * @param[in] ch Channel number.
 * @param[out] sensitivity Pointer to store retrieved sensitivity.
 * @return ESP_OK on success, error code otherwise.
 */
esp_err_t relay_chn_nvs_get_tilt_sensitivity(uint8_t ch, uint8_t *sensitivity);

/**
 * @brief Store tilt counters in NVS.
 *
 * @param[in] ch Channel number.
 * @param[in] forward_count Forward tilt counter value.
 * @param[in] reverse_count Reverse tilt counter value.
 * @return ESP_OK on success, error code otherwise.
 */
esp_err_t relay_chn_nvs_set_tilt_count(uint8_t ch, uint32_t forward_count, uint32_t reverse_count);

/**
 * @brief Retrieve tilt counters from NVS.
 *
 * @param[in] ch Channel number.
 * @param[out] forward_count Pointer to store forward tilt counter.
 * @param[out] reverse_count Pointer to store reverse tilt counter.
 * @return ESP_OK on success, error code otherwise.
 */
esp_err_t relay_chn_nvs_get_tilt_count(uint8_t ch, uint32_t *forward_count, uint32_t *reverse_count);
#endif // RELAY_CHN_ENABLE_TILTING

/**
 * @brief Erase all keys in the NVS namespace.
 *
 * This function will erase all key-value pairs in the NVS namespace used by relay channels.
 *
 * @return ESP_OK on success, error code otherwise.
 */
esp_err_t relay_chn_nvs_erase_all(void);

/**
 * @brief Deinitialize NVS storage for relay channels.
 *
 * @return ESP_OK on success, error code otherwise.
 */
esp_err_t relay_chn_nvs_deinit(void);

#ifdef __cplusplus
}
#endif