import { StorageService } from '../../storage/services/storage.service';
import { ConnectionState } from '../devices.constants';
import { ChannelPropertyEntity, DeviceEntity } from '../entities/devices.entity';
export declare class DeviceConnectionStateService {
    private readonly storageService;
    private readonly logger;
    private statusMap;
    private statusPropertyMap;
    constructor(storageService: StorageService);
    getOnlineCountForDevices(currentDeviceIds: Set<DeviceEntity['id']>): Promise<number>;
    write(device: DeviceEntity, property: ChannelPropertyEntity, status: ConnectionState): Promise<void>;
    readLatest(device: DeviceEntity): Promise<{
        online: boolean;
        status: ConnectionState;
        lastChanged: Date | null;
    }>;
    delete(device: DeviceEntity): Promise<void>;
    deleteByProperty(property: ChannelPropertyEntity): Promise<void>;
}