import { AppLoggingService } from "../../logging/services/logging.service";
import { RedisClientStorageService } from "../../redis/services/redis.client.storage.service";
export interface PresenceStatus {
    status: "online" | "away" | "offline";
    lastActivity: Date;
    socketIds: string[];
    userName: string;
}
/**
 * Presence Service
 *
 * Tracks user online/offline/away status using Redis
 *
 * Features:
 * - Real-time presence tracking
 * - Multi-device support (tracks multiple socket connections)
 * - Automatic status calculation (online/away/offline)
 * - TTL-based expiration
 * - Batch status queries
 */
export declare class PresenceService {
    private readonly logger;
    private readonly redisClientStorage?;
    private readonly PRESENCE_KEY_PREFIX;
    private readonly PRESENCE_TTL;
    private readonly ONLINE_THRESHOLD;
    private readonly AWAY_THRESHOLD;
    constructor(logger: AppLoggingService, redisClientStorage?: RedisClientStorageService);
    /**
     * Set user as online when they connect
     */
    setUserOnline(userId: string, userName: string, socketId: string): Promise<void>;
    /**
     * Set user as offline when they disconnect
     * Only sets to offline if no other sockets are connected
     */
    setUserOffline(userId: string, socketId: string): Promise<void>;
    /**
     * Update user activity timestamp (called on heartbeat)
     */
    updateActivity(userId: string): Promise<void>;
    /**
     * Get user's current status
     */
    getUserStatus(userId: string): Promise<PresenceStatus>;
    /**
     * Get statuses for multiple users
     */
    getUsersStatuses(userIds: string[]): Promise<Map<string, PresenceStatus>>;
    /**
     * Mark idle users as "away"
     * Called by cron job every 5 minutes
     * Returns array of user IDs whose status changed
     */
    markIdleUsersAsAway(): Promise<string[]>;
    /**
     * Helper to construct Redis key
     */
    private getPresenceKey;
}
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