import type { MediaAssetRepository } from "../../domain/port/MediaAssetRepository.js";
import type { MediaAsset } from "../../domain/port/MediaStorage.js";
import type { UpdateMediaAssetRequest } from "../dto/media/index.js";
/**
 * `UpdateMediaAssetUseCase` — patch alt/caption on a committed asset
 * (#434). Variants/mime/bytes/createdAt are frozen at commit; only the
 * two operator-authored text fields are mutable here. `save` upserts by
 * id (the commit use case shares the same writer), so the read →
 * merge → save round-trips the full row while touching only alt/caption.
 *
 * A field left `undefined` in the request is preserved; an empty string
 * clears it. Rejects `MEDIA_ASSET_NOT_FOUND` when the id is absent so a
 * PATCH against a deleted asset doesn't silently re-create a partial row.
 */
export declare class UpdateMediaAssetUseCase {
    private readonly assets;
    constructor(assets: MediaAssetRepository);
    execute(request: UpdateMediaAssetRequest): Promise<MediaAsset>;
}
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