import 'reflect-metadata';
import { Event, SessionInterface as Session, SessionsList } from './types';
import { BaseSessionService, ListEventsResponse } from './BaseSessionService';
/**
 * A session service that uses a database for persistent storage.
 * This implementation uses TypeORM with SQLite by default.
 */
export declare class DatabaseSessionService extends BaseSessionService {
    private dbUrl;
    private connection;
    private sessionRepo;
    private eventRepo;
    private appStateRepo;
    private userStateRepo;
    /**
     * Creates a new DatabaseSessionService.
     * @param dbUrl The database URL (e.g., 'sqlite:///:memory:' for in-memory SQLite)
     */
    constructor(dbUrl: string);
    /**
     * Closes the database connection for this instance.
     * This is useful for testing to properly clean up resources.
     */
    closeConnection(): Promise<void>;
    /**
     * Closes all database connections.
     * This static method is useful for testing to properly clean up resources.
     */
    static closeAllConnections(): Promise<void>;
    /**
     * Ensures the database connection is established
     */
    private ensureConnection;
    /**
     * Creates a new session.
     */
    createSession(options: {
        appName: string;
        userId: string;
        sessionId?: string;
        state?: Record<string, any>;
    }): Promise<Session>;
    /**
     * Gets a session by its ID.
     */
    getSession(options: {
        appName: string;
        userId: string;
        sessionId: string;
    }): Promise<Session | null>;
    /**
     * Lists all sessions for a user in an app.
     */
    listSessions(options: {
        appName: string;
        userId: string;
    }): Promise<SessionsList>;
    /**
     * Deletes a session.
     */
    deleteSession(options: {
        appName: string;
        userId: string;
        sessionId: string;
    }): Promise<void>;
    /**
     * Appends an event to a session.
     */
    appendEvent(options: {
        session: Session;
        event: Event;
    }): Promise<void>;
    /**
     * Lists events in a session.
     */
    listEvents(options: {
        appName: string;
        userId: string;
        sessionId: string;
    }): Promise<ListEventsResponse>;
    /**
     * Updates the state of a session.
     */
    updateSessionState(appName: string, userId: string, sessionId: string, stateDelta: Record<string, any>): Promise<Session>;
}