import { default as Database } from 'better-sqlite3';
import { Artifact, RawTranscriptData } from './types.js';
/**
 * Manages artifacts (raw transcripts, future types) stored in the transcript
 */
export declare class ArtifactManager {
    private db;
    constructor(db: Database.Database);
    /**
     * Add an artifact to the transcript
     */
    addArtifact(type: string, data: Buffer | null, metadata?: Record<string, unknown>): number;
    /**
     * Get an artifact by type (returns most recent)
     */
    getArtifact(type: string): Artifact | null;
    /**
     * Get all artifacts of a specific type
     */
    getArtifactsByType(type: string): Artifact[];
    /**
     * Get all artifacts
     */
    getAllArtifacts(): Artifact[];
    /**
     * Delete an artifact by ID
     */
    deleteArtifact(id: number): boolean;
    /**
     * Check if an artifact type exists
     */
    hasArtifact(type: string): boolean;
    /**
     * Set the raw transcript (from Whisper)
     * This is a write-once operation - raw transcripts don't change
     */
    setRawTranscript(data: RawTranscriptData): number;
    /**
     * Get the raw transcript
     */
    getRawTranscript(): RawTranscriptData | null;
    /**
     * Check if raw transcript exists
     */
    hasRawTranscript(): boolean;
}
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