import type { Database } from "./database.js";
import type { CodeChunk, ChunkType } from "../types/index.js";
export declare class ChunkStore {
    private db;
    private insertStmt;
    private getByFileStmt;
    private deleteByFileStmt;
    private searchFtsStmt;
    private getByIdStmt;
    private getByNameStmt;
    constructor(db: Database);
    insert(fileId: number, type: ChunkType, name: string | null, signature: string | null, startLine: number, endLine: number, content: string, description: string | null, tokenCount: number): number;
    getByFile(fileId: number): CodeChunk[];
    deleteByFile(fileId: number): void;
    searchFts(query: string, limit?: number): (CodeChunk & {
        rank: number;
    })[];
    getById(id: number): CodeChunk | undefined;
    /**
     * Batched fetch by a set of chunk ids. Used by hybrid-search to enrich
     * the RRF candidate set in one query instead of N point reads. The
     * `WHERE id IN (...)` shape is built dynamically because better-sqlite3
     * doesn't support array binding; we cap chunk-count at MAX_CANDIDATES
     * (~500) upstream so the SQL stays well under SQLITE_MAX_VARIABLE_NUMBER.
     * Returns chunks in arbitrary order — caller is responsible for the
     * (chunkId → CodeChunk) mapping if ordering matters.
     */
    getByIds(ids: number[]): CodeChunk[];
    getByName(namePattern: string, limit?: number): CodeChunk[];
    /**
     * Same shape as getByName, but JOINs in the containing file's path and
     * pagerank in a single indexed query so callers don't need to follow
     * up with a full fileStore.getAll() scan. Issue #6: the first-call
     * latency on sverklo_lookup was dominated by that scan warming up
     * prepared statements over the files table.
     */
    getByNameWithFile(namePattern: string, limit?: number): (CodeChunk & {
        filePath: string;
        pagerank: number;
        fileLanguage: string;
    })[];
    count(): number;
    /** Update the purpose field on a chunk (P1-12). */
    updatePurpose(chunkId: number, purpose: string | null): void;
    /** Read just the purpose for a chunk — cheap query path used by the
     * enrichment cache check. */
    getPurpose(chunkId: number): string | null;
    getAllWithFile(): (CodeChunk & {
        filePath: string;
        pagerank: number;
    })[];
}