/**
 * Conversation history management for Grok CLI
 * Handles conversation persistence, loading, and continuation
 */
import type { Session, ChatMessage } from '../types';
export interface ConversationHistory {
    id: string;
    startTime: Date;
    lastUpdateTime: Date;
    cwd: string;
    messageCount: number;
    firstMessage: string;
    lastMessage: string;
    filePath: string;
}
export interface HistorySession {
    session: Session;
    messages: ChatMessage[];
    metadata: {
        totalMessages: number;
        startTime: Date;
        lastUpdateTime: Date;
        cwd: string;
    };
}
/**
 * History manager for conversation persistence
 */
export declare class HistoryManager {
    private historyDir;
    private historyIndex;
    private conversations;
    constructor();
    /**
     * Initialize history directory and load conversation index
     */
    initialize(): Promise<void>;
    /**
     * Save a conversation session to history
     */
    saveConversation(session: Session, messages: ChatMessage[]): Promise<void>;
    /**
     * Load a conversation from history
     */
    loadConversation(sessionId: string): Promise<HistorySession | null>;
    /**
     * Get the most recent conversation
     */
    getLastConversation(): Promise<ConversationHistory | null>;
    /**
     * List recent conversations
     */
    getRecentConversations(limit?: number): Promise<ConversationHistory[]>;
    /**
     * Search conversations by content
     */
    searchConversations(query: string, limit?: number): Promise<ConversationHistory[]>;
    /**
     * Delete a conversation from history
     */
    deleteConversation(sessionId: string): Promise<boolean>;
    /**
     * Get conversation statistics
     */
    getStatistics(): Promise<{
        totalConversations: number;
        totalMessages: number;
        oldestConversation: Date | null;
        newestConversation: Date | null;
        avgMessagesPerConversation: number;
    }>;
    /**
     * Clean up old conversations
     */
    cleanupOldConversations(maxAge?: number): Promise<number>;
    /**
     * Export conversation history
     */
    exportConversations(outputPath: string): Promise<void>;
    /**
     * Load conversation index from disk
     */
    private loadConversationIndex;
    /**
     * Save conversation index to disk
     */
    private saveConversationIndex;
    /**
     * Get history directory path
     */
    getHistoryDir(): string;
}
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