import { ServiceNowInstance } from "../ServiceNowInstance.js";
import { AttachmentRecord, UploadAttachmentOptions, ListAttachmentsOptions } from './AttachmentModels.js';
/**
 * AttachmentManager provides methods for uploading, listing, and retrieving
 * attachments on ServiceNow records via the Attachment API.
 */
export declare class AttachmentManager {
    static readonly ATTACHMENT_API_PATH = "/api/now/attachment";
    static readonly ATTACHMENT_FILE_API_PATH = "/api/now/attachment/file";
    static readonly ATTACHMENT_TABLE = "sys_attachment";
    private _logger;
    private _req;
    private _tableAPI;
    private _instance;
    constructor(instance: ServiceNowInstance);
    /**
     * Upload an attachment to a ServiceNow record.
     * POST to /api/now/attachment/file with multipart/form-data headers
     * and query params for table_name, table_sys_id, and file_name.
     */
    uploadAttachment(options: UploadAttachmentOptions): Promise<AttachmentRecord>;
    /**
     * List attachments for a specific record.
     * Uses TableAPIRequest.get on sys_attachment with encoded query.
     */
    listAttachments(options: ListAttachmentsOptions): Promise<AttachmentRecord[]>;
    /**
     * Get a single attachment record by sys_id.
     * Uses TableAPIRequest.get on sys_attachment with sys_id filter.
     */
    getAttachment(sysId: string): Promise<AttachmentRecord>;
}