/**
 * Filter Service Handler
 *
 * Implements the HomeKit FilterMaintenance service for Dyson devices.
 * Provides filter life percentage and change indication for HEPA and carbon filters.
 */
import type { API, Logging, PlatformAccessory, Service } from 'homebridge';
import type { DysonLinkDevice } from '../../devices/dysonLinkDevice.js';
/**
 * Configuration for FilterService
 */
export interface FilterServiceConfig {
    accessory: PlatformAccessory;
    device: DysonLinkDevice;
    api: API;
    log: Logging;
    /** Primary service to link this service to */
    primaryService?: Service;
}
/**
 * FilterService handles the HomeKit FilterMaintenance service
 *
 * Maps Dyson filter data to HomeKit characteristics:
 * - FilterLifeLevel (0-100% based on HEPA filter)
 * - FilterChangeIndication (1 when filter life <= 10%)
 */
export declare class FilterService {
    private readonly service;
    private readonly device;
    private readonly log;
    private readonly api;
    private readonly boundHandleStateChange;
    constructor(config: FilterServiceConfig);
    /**
     * Get the underlying HomeKit service
     */
    getService(): Service;
    /**
     * Clean up event listeners
     */
    destroy(): void;
    /**
     * Calculate filter life percentage from hours remaining
     *
     * @param hoursRemaining - Hours of filter life remaining
     * @returns Percentage (0-100)
     */
    private calculateFilterLifePercent;
    /**
     * Get the primary filter life (HEPA filter, with carbon as fallback)
     */
    private getPrimaryFilterLife;
    /**
     * Handle FilterLifeLevel GET request
     * Returns 0-100 percentage
     */
    private handleFilterLifeLevelGet;
    /**
     * Handle FilterChangeIndication GET request
     * Returns 1 if filter needs changing, 0 otherwise
     */
    private handleFilterChangeIndicationGet;
    /**
     * Handle device state changes
     * Updates HomeKit characteristics to reflect current device state
     */
    private handleStateChange;
    /**
     * Update characteristics from current device state
     * Call this after connecting to sync HomeKit with device
     */
    updateFromState(): void;
}
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