import { CueAuth } from './auth';
import { AvailableFiltersResponse, IndexAppliedFilters, IndexSearchRequest, IndexSearchResponse } from './models';
export declare class CueIndexApi {
    private readonly _auth;
    private readonly _gatewayUrl;
    constructor(_auth: CueAuth, _gatewayUrl: string);
    search(input: string, projectId: string, opts?: Omit<IndexSearchRequest, 'input'>): Promise<IndexSearchResponse>;
    lookup(input: string, projectId: string, opts?: {
        aggregate?: boolean;
    }): Promise<IndexSearchResponse>;
    /**
     * Discover which filter options are available in the document set that survives
     * the provided `applied` filters. Call with no `applied` argument (or an empty
     * object) to retrieve all options for the project.
     *
     * Drives adaptive filter UIs: after the user sets filter N, pass the active
     * filters to this method and use the response to constrain the options shown
     * for filter N+1.
     *
     * Requires the `/index/available-filters` gateway endpoint.
     */
    availableFilters(projectId: string, applied?: IndexAppliedFilters): Promise<AvailableFiltersResponse>;
    /**
     * Forces a full binary rebuild of the project's QLever index. Super-admin only
     * (the gateway/accessor rejects non-superadmin callers). Streams NDJSON
     * progress lines from the backend; `onProgress` (if given) is called with
     * each intermediate message. Resolves with the final message once the
     * rebuild finishes, or rejects if it fails.
     */
    rebuild(projectId: string, onProgress?: (message: string) => void): Promise<string>;
    /**
     * Forces a full re-scan of every project's QLever stats (materialized views,
     * index size, cue-meta) and persists the result, bypassing the normal cache
     * TTL. Super-admin only. This refreshes the shared stats aggregate for ALL
     * projects, not just the current one — there's no per-project variant since
     * the aggregate is written as a single file. Resolves with a summary message.
     */
    refreshStats(): Promise<string>;
}