import type { EventEmitter } from "@synet/patterns";
import type { RealtimeEvent, Topic } from "../common/realtime-event";
import type { RealtimeChannel } from "./realtime-channel";
/**
 * CLIENT-SIDE: Subscribe to and emit events to remote topics
 */
export interface RealtimeClient {
    /**
     * Subscribe to events from a topic
     * @param topic Topic name (e.g., "users", "notifications")
     * @param handler Function to handle incoming events
     * @returns Unsubscribe function
     */
    subscribe(topic: Topic): RealtimeChannel;
    /**
     * Unsubscribe from a topic
     * @param topic Topic to unsubscribe from
     */
    unsubscribe(topic: Topic): Promise<void>;
    /**
     * Send an event to a topic (for bidirectional communication)
     * @param topic Target topic
     * @param event Event to send
     */
    publish(topic: Topic, event: RealtimeEvent): Promise<void>;
    /**
     * Connect to the realtime server
     */
    connect(): Promise<void>;
    /**
     * Disconnect from the realtime server
     */
    disconnect(): Promise<void>;
    /**
     * Get local event emitter for subscribed events
     */
    getEventEmitter(): EventEmitter<RealtimeEvent>;
}