import { ChatMessage, ChatSession, ChatSessionSummary } from '../types.js';
export declare class SessionManager {
    private customDir?;
    private currentUserId;
    private activeSessionId;
    constructor(customDir?: string);
    switchUser(userId?: string): void;
    getChatsDir(): string;
    getActiveSessionFile(): string;
    private ensureDirectory;
    private initActiveSession;
    private getSessionFilePath;
    private saveActiveSessionId;
    getActiveSessionId(): string;
    setActiveSessionId(id: string): ChatSession | null;
    createSession(title?: string): ChatSession;
    getSession(id: string): ChatSession | null;
    getActiveSession(): ChatSession;
    saveSession(session: ChatSession): void;
    addMessageToActiveSession(message: ChatMessage): ChatSession;
    listSessions(): ChatSessionSummary[];
    deleteSession(id: string): boolean;
    renameSession(id: string, newTitle: string): boolean;
    clearActiveSessionMessages(): void;
}
export declare const sessionManager: SessionManager;
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