import Database from 'better-sqlite3';
import type { Device, DeviceStatus, ExtendedDeviceInfo, LogEntry } from '../types/index.js';
export declare function initDatabase(dbPath: string): Database.Database;
export declare function getDatabase(): Database.Database;
export declare function closeDatabase(): void;
export declare function upsertDevice(device: Omit<Device, 'createdAt'> & {
    createdAt?: number;
}): Device;
export declare function getDevice(id: string): Device | null;
export declare function getAllDevices(): Device[];
export declare function updateDeviceStatus(id: string, status: DeviceStatus): boolean;
export declare function updateDeviceLastSeen(id: string, timestamp?: number): boolean;
export declare function updateDeviceExtendedInfo(id: string, info: ExtendedDeviceInfo): boolean;
export declare function deleteDevice(id: string): boolean;
export declare function addLog(deviceId: string, level: LogEntry['level'], message: string, data?: unknown): void;
export declare function getDeviceLogs(deviceId: string, limit?: number): LogEntry[];
export declare function getAllLogs(limit?: number): LogEntry[];
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