import { EventEmitter } from '../core/EventEmitter';
export interface CloudPrintOptions {
    /** WebSocket 服务器地址 */
    serverUrl: string;
    /** 设备 ID */
    deviceId: string;
    /** API 密钥（可选） */
    apiKey?: string;
    /** 自动重连 */
    reconnect?: boolean;
    /** 重连间隔 (ms) */
    reconnectInterval?: number;
    /** 心跳间隔 (ms) */
    heartbeatInterval?: number;
    /** 连接超时 (ms) */
    connectTimeout?: number;
}
export interface PrintJob {
    /** 任务 ID */
    id: string;
    /** 打印数据 */
    data: Uint8Array | string;
    /** 份数 */
    copies?: number;
    /** 优先级 */
    priority?: number;
}
export interface CloudPrinterStatus {
    /** 打印机状态 */
    status: 'idle' | 'printing' | 'error' | 'offline';
    /** 纸张状态 */
    paper?: 'ok' | 'low' | 'out';
    /** 错误信息 */
    error?: string;
    /** 最后更新时间 */
    timestamp: number;
}
export interface CloudPrintEvents {
    /** 连接成功 */
    connect: void;
    /** 断开连接 */
    disconnect: void;
    /** 连接错误 */
    error: Error;
    /** 状态更新 */
    status: CloudPrinterStatus;
    /** 打印完成 */
    'print-complete': string;
    /** 打印失败 */
    'print-error': {
        jobId: string;
        error: string;
    };
    /** 收到原始消息 */
    message: Record<string, unknown>;
}
export type CloudPrintEvent = keyof CloudPrintEvents;
export declare class CloudPrintManager extends EventEmitter<CloudPrintEvents> {
    private readonly log;
    private options;
    private ws;
    private isConnected;
    private reconnectTimer;
    private heartbeatTimer;
    private status;
    private connectResolve;
    private connectReject;
    constructor(options: CloudPrintOptions);
    /**
     * 检查是否已连接
     */
    get connected(): boolean;
    /**
     * 获取当前打印机状态
     */
    get currentStatus(): CloudPrinterStatus;
    /**
     * 连接到云端服务器
     */
    connect(): Promise<void>;
    /**
     * 断开连接
     */
    disconnect(): void;
    /**
     * 发送打印任务
     * @throws Error 如果未连接
     */
    print(job: PrintJob): void;
    /**
     * 获取打印机状态
     */
    getStatus(): CloudPrinterStatus;
    /**
     * 处理接收到的消息
     */
    private handleMessage;
    /**
     * 启动心跳
     */
    private startHeartbeat;
    /**
     * 停止心跳
     */
    private stopHeartbeat;
    /**
     * 安排重连
     */
    private scheduleReconnect;
    /**
     * 取消重连
     */
    private cancelReconnect;
    /**
     * ArrayBuffer 转 Base64
     */
    private arrayBufferToBase64;
}