import { B as BaseProfile } from '../base-n3IBbs7i.mjs';
import '../error-taxonomy-CWrJx3aZ.mjs';

/**
 * Service UUIDs a Heart Rate device may reach after connection (the SIG Heart
 * Rate Service, 0x180D). Canonical 128-bit form (resolved from the SIG alias via
 * the core registry — single source of truth). Use with `optionalServices` /
 * `Beacio.registerServices`, or via {@link deriveOptionalServices} given
 * {@link HeartRateProfile}.
 */
declare const HEART_RATE_SERVICES: readonly string[];
/**
 * Parsed heart rate measurement data from the Heart Rate Measurement
 * characteristic (UUID 0x2A37).
 *
 * Fields are populated based on the flags byte in the BLE payload.
 * Optional fields are `null` when the corresponding flag bit is unset.
 */
interface HeartRateData {
    /** Heart rate value in beats per minute (BPM). May be 8-bit or 16-bit depending on the flags byte. */
    bpm: number;
    /** Whether the sensor has skin contact. `null` if the sensor does not support contact detection. */
    contact: boolean | null;
    /** Cumulative energy expended in kilojoules since the last reset. `null` if not present in this measurement. */
    energyExpended: number | null;
    /** RR-interval values in seconds (1/1024 s resolution). Empty array if not present in this measurement. */
    rrIntervals: number[];
}
/**
 * BLE Heart Rate Service profile (UUID 0x180D).
 *
 * Provides access to heart rate measurements, body sensor location,
 * and the energy-expended reset control point as defined by the
 * Bluetooth SIG Heart Rate Service specification.
 *
 * The measurement characteristic (0x2A37) uses a flags byte:
 * bit 0 = HR format (0 = UINT8, 1 = UINT16), bits 1-2 = sensor contact,
 * bit 3 = energy expended present, bit 4 = RR-interval present.
 *
 * @example
 * ```ts
 * import { HeartRateProfile } from '@beacio/core/profiles';
 *
 * const hr = new HeartRateProfile(device);
 * await hr.connect();
 *
 * // Subscribe to real-time heart rate data
 * const unsubscribe = hr.onHeartRate((data) => {
 *   console.log(`BPM: ${data.bpm}`);
 *   if (data.contact === false) {
 *     console.warn('No skin contact detected');
 *   }
 *   if (data.rrIntervals.length > 0) {
 *     console.log('RR intervals (s):', data.rrIntervals);
 *   }
 * });
 *
 * // Read sensor location (e.g. 1 = Chest, 2 = Wrist)
 * const location = await hr.readSensorLocation();
 *
 * // Clean up
 * unsubscribe();
 * hr.stop();
 * ```
 */
declare class HeartRateProfile extends BaseProfile {
    /** Services this profile's device may reach after connection (Heart Rate, 0x180D). Read by {@link deriveOptionalServices}. */
    static readonly services: readonly string[];
    protected readonly service = "heart_rate";
    /** Subscribe to heart rate measurements. Returns unsubscribe function. */
    onHeartRate(callback: (data: HeartRateData) => void): () => void;
    /** Read body sensor location (0=Other, 1=Chest, 2=Wrist, ...) */
    readSensorLocation(): Promise<number>;
    /** Reset energy expended counter */
    resetEnergyExpended(): Promise<void>;
}
/**
 * Parse a raw Heart Rate Measurement characteristic value (UUID 0x2A37)
 * into a structured {@link HeartRateData} object.
 *
 * The first byte is a flags field that determines the format and which
 * optional fields are present. This function handles all flag combinations
 * defined by the Bluetooth SIG specification.
 *
 * @param dv - Raw characteristic value as a {@link DataView}.
 * @returns Parsed heart rate data with BPM, contact status, energy, and RR intervals.
 *
 * @example
 * ```ts
 * import { parseHeartRate } from '@beacio/core/profiles';
 *
 * // Manually parse a DataView from a notification
 * const data = parseHeartRate(characteristicValue);
 * console.log(`Heart rate: ${data.bpm} BPM`);
 * ```
 */
declare function parseHeartRate(dv: DataView): HeartRateData;

export { HEART_RATE_SERVICES, type HeartRateData, HeartRateProfile, parseHeartRate };