import type { Attachments } from "./types.js";
/**
 * Reference with attachment-related fields
 */
interface ReferenceForAttachments {
    id: string;
    PMID?: string;
    custom?: {
        uuid?: string;
        attachments?: Attachments;
    };
}
/**
 * Get the full directory path for a reference's attachments
 *
 * Uses existing directory name from metadata if available,
 * otherwise generates a new one.
 */
export declare function getDirectoryPath(ref: ReferenceForAttachments, baseDir: string): string;
/**
 * Ensure the attachments directory exists for a reference
 *
 * Creates the directory if it doesn't exist.
 * Returns the full directory path.
 */
export declare function ensureDirectory(ref: ReferenceForAttachments, baseDir: string): Promise<string>;
/**
 * Delete a directory if it's empty
 *
 * Does nothing if the directory is not empty or doesn't exist.
 */
export declare function deleteDirectoryIfEmpty(dirPath: string): Promise<void>;
/**
 * Rename a directory
 *
 * Does nothing if the paths are the same or old directory doesn't exist.
 */
export declare function renameDirectory(oldPath: string, newPath: string): Promise<void>;
export {};
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