import type { IncomingMessage } from "node:http";
import type { Duplex } from "node:stream";
interface PtyProcess {
    write(data: string): void;
    resize(columns: number, rows: number): void;
    kill(signal?: string): void;
    onData(listener: (data: string) => void): {
        dispose(): void;
    };
    onExit(listener: (event: {
        exitCode: number;
        signal?: number;
    }) => void): {
        dispose(): void;
    };
}
interface PtyModule {
    spawn(file: string, args: string[], options: {
        name: string;
        cols: number;
        rows: number;
        cwd: string;
        env: NodeJS.ProcessEnv;
    }): PtyProcess;
}
interface TerminalServiceOptions {
    workspace: string;
    manager: {
        id: string;
        version: string;
    };
    available: () => boolean;
    now?: () => number;
    loadPty?: () => Promise<PtyModule>;
}
/** 管理服务拥有 PTY；每个已授权的本机 WebSocket 独占一个 shell，断线即销毁。 */
export declare class ControlTerminalService {
    private readonly options;
    private readonly server;
    private readonly tickets;
    private readonly sessions;
    private readonly now;
    private readonly ptyPresent;
    private closed;
    constructor(options: TerminalServiceOptions);
    status(): {
        available: boolean;
        localOnly: true;
        activeSessions: number;
    };
    issueTicket(): {
        ticket: string;
        expiresAt: number;
    };
    handleUpgrade(request: IncomingMessage, socket: Duplex, head: Buffer): boolean;
    close(): void;
    private open;
    private consumeTicket;
    private sweepTickets;
    private send;
}
export {};
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