/**
 * Subscription Management — Ref-counted channel subscriptions + event buffer replay.
 *
 * Manages daemon pub/sub subscriptions with reference counting so channels
 * are subscribed only when at least one client is viewing them.
 * Buffers recent events for delta-sync on reconnect.
 */
import type { AnyPhotonInfo } from '../types.js';
export interface SubscriptionManagerDeps {
    photons: AnyPhotonInfo[];
    workingDir: string;
}
export declare class SubscriptionManager {
    private channelSubscriptions;
    private channelEventBuffers;
    private sessionViewState;
    private deps;
    constructor(deps: SubscriptionManagerDeps);
    /** Store an event in the channel buffer */
    bufferEvent(channel: string, method: string, params: Record<string, unknown>): number;
    /** Replay missed events to a session, or signal full sync needed */
    replayEventsToSession(sessionId: string, channel: string, lastTimestamp?: number): {
        replayed: number;
        refreshNeeded: boolean;
    };
    /** Subscribe to a channel (increment ref count, actually subscribe if first) */
    subscribeToChannel(channel: string): Promise<void>;
    /** Unsubscribe from a channel (decrement ref count, actually unsubscribe if last) */
    unsubscribeFromChannel(channel: string): void;
    /** Called when a client starts viewing a board */
    onClientViewingBoard(sessionId: string, photonId: string, itemId: string, lastTimestamp?: number): void;
    /** Called when a client disconnects */
    onClientDisconnect(sessionId: string): void;
}
//# sourceMappingURL=subscription.d.ts.map