#pragma once

#include <stdint.h>

/**
 * Called for every unique BLE advertisement received.
 * tag_id is a null-terminated string: "aa:bb:cc:dd:ee:ff"
 * rssi is in dBm (negative).
 */
typedef void (*ble_scanner_cb_t)(const char *tag_id, int8_t rssi);

/**
 * Initialise the Bluedroid BLE stack and register the scan callback.
 * Must be called once after esp_bt_controller_init / esp_bluedroid_init.
 */
void ble_scanner_init(ble_scanner_cb_t cb);

/** Start passive BLE scanning. */
void ble_scanner_start(void);

/** Stop BLE scanning. */
void ble_scanner_stop(void);