import { Message } from '../types';
import { DatabaseManager } from './db';
import { IEmbeddingService } from '../core/embedding-service';
export declare class MessagesDAO {
    private dbManager;
    private embeddingService;
    private searchEngine;
    constructor(dbManager: DatabaseManager, embeddingService: IEmbeddingService);
    private get db();
    create(input: Partial<Message> & {
        threadId: string;
        role: string;
        content: string;
    }): Promise<Message>;
    findByThreadId(threadId: string, options?: {
        limit?: number;
        offset?: number;
    }): Message[];
    /**
     * Semantically search for messages
     */
    searchSimilar(query: string, options?: {
        threadId?: string;
        topK?: number;
        minScore?: number;
    }): Promise<Array<Message & {
        score: number;
    }>>;
    deleteByThreadId(threadId: string): void;
    private updateThreadMessageCount;
    private mapRowToMessage;
}