import { PostgreSQLAdapter } from '../PostgreSQLAdapter';
/**
 * Search result with similarity scores
 */
export interface SearchResult {
    id: string;
    title: string;
    excerpt?: string;
    body?: string;
    titleSimilarity: number;
    bodySimilarity: number;
    totalSimilarity: number;
    [key: string]: unknown;
}
/**
 * Search options
 */
export interface SearchOptions {
    limit?: number;
    offset?: number;
    minSimilarity?: number;
    fields?: string[];
    orderBy?: 'relevance' | 'date' | 'title';
}
/**
 * PostgreSQL full-text search with pg_trgm
 * Enables fuzzy matching and typo-tolerance
 */
export declare class FullTextSearchManager {
    private adapter;
    private logger?;
    constructor(adapter: PostgreSQLAdapter);
    /**
     * Search content with full-text search and fuzzy matching
     */
    searchContent(query: string, options?: SearchOptions): Promise<SearchResult[]>;
    /**
     * Search using PostgreSQL full-text search vectors (ts_vector)
     */
    searchWithTsVector(query: string, options?: SearchOptions): Promise<SearchResult[]>;
    /**
     * Combined search using both pg_trgm fuzzy matching and ts_vector
     */
    searchCombined(query: string, options?: SearchOptions): Promise<SearchResult[]>;
    /**
     * Create full-text search indexes
     */
    createIndexes(): Promise<void>;
    /**
     * Drop full-text search indexes
     */
    dropIndexes(): Promise<void>;
    /**
     * Get search statistics
     */
    getSearchStats(): Promise<{
        indexesExist: boolean;
        extensionEnabled: boolean;
        searchVectorExists: boolean;
    }>;
}