#ifndef POD_SETTINGS_H
#define POD_SETTINGS_H

#include "bosch456.h"
#include "esp_err.h"
#include <stdbool.h>
#include <stdint.h>

/** Initialize NVS (idempotent) and log stored settings. Call once early in app_main. */
esp_err_t pod_settings_init(void);

/** Persist local accelerometer deadzone (LSB per axis). */
esp_err_t pod_settings_save_accel_deadzone(uint32_t deadzone_lsb);

/** Load deadzone from NVS, or BMA456_DEFAULT_ACCEL_DEADZONE if unset. */
uint32_t pod_settings_load_accel_deadzone(void);

/** Apply NVS deadzone to BMA456 when the sensor is present. */
void pod_settings_apply_accel_deadzone(void);

/** Persist local BMA456 tap detection config. */
esp_err_t pod_settings_save_tap_config(const bma456_tap_config_t *cfg);

/**
 * Load tap config from NVS into *cfg_out.
 * Returns true when a valid blob was loaded; false → compile-time defaults.
 */
bool pod_settings_load_tap_config(bma456_tap_config_t *cfg_out);

/** Apply NVS tap config to BMA456 when the sensor is present. */
void pod_settings_apply_tap_config(void);

/** LiPo under-voltage latch persisted across reboot (software UV protection). */
bool pod_settings_is_uv_latched(void);
esp_err_t pod_settings_set_uv_latched(bool latched);
esp_err_t pod_settings_clear_uv_latched(void);

/**
 * Runtime enable for software UV protection (NVS). Missing key → disabled.
 * Independent of POWERPOD_BATTERY_UV_ENABLE compile gate.
 */
bool pod_settings_is_uv_enabled(void);
esp_err_t pod_settings_set_uv_enabled(bool enabled);

/** Logical slave ids: 1…POD_CLIENT_ID_MAX (0 reserved for local master). */
#define POD_CLIENT_ID_MIN 1u
#define POD_CLIENT_ID_MAX 255u
#define POD_ID_MAP_MAX 255u
#define POD_ID_MAC_LEN 6u

typedef struct {
  uint8_t mac[POD_ID_MAC_LEN];
  uint8_t id;
} pod_id_map_entry_t;

typedef struct {
  uint8_t next_id; /**< Next candidate when allocating (1…255). */
  uint8_t count;
  pod_id_map_entry_t entries[POD_ID_MAP_MAX];
} pod_id_map_t;

/** Master: load MAC→id map from NVS (zeros *out if unset). */
esp_err_t pod_settings_load_id_map(pod_id_map_t *out);
esp_err_t pod_settings_save_id_map(const pod_id_map_t *map);
esp_err_t pod_settings_clear_id_map(void);

/**
 * Slave: load persisted {master_mac, assigned_id}.
 * Returns true when a valid binding was loaded.
 */
bool pod_settings_load_id_binding(uint8_t master_mac[POD_ID_MAC_LEN],
                                  uint32_t *assigned_id_out);
esp_err_t pod_settings_save_id_binding(const uint8_t master_mac[POD_ID_MAC_LEN],
                                       uint32_t assigned_id);
esp_err_t pod_settings_clear_id_binding(void);

#endif