import type { ContentBlockParam } from '@anthropic-ai/sdk/resources';
import { type ImageBlockAttachment } from './image-blocks.js';
export type InboundMediaType = ImageBlockAttachment['mediaType'];
export interface InboundAttachmentRecord {
    readonly path: string;
    readonly mediaType: InboundMediaType;
    readonly sizeBytes: number;
    readonly digest: string;
}
export interface InboundAttachmentRegistration extends InboundAttachmentRecord {
    readonly id: string;
}
export interface InboundAttachmentReader {
    get(sessionId: string, id: string): InboundAttachmentRecord | undefined;
    listIds(sessionId: string): string[];
}
type HashBytes = (bytes: Buffer) => string;
export declare function formatInboundImageMarker(id: string, mediaType: InboundMediaType, sizeBytes: number): string;
export declare function registerInboundImageBlocks(blocks: ContentBlockParam[], sessionId: string, attachments: readonly ImageBlockAttachment[], registry?: InboundAttachmentRegistry): Promise<void>;
export declare class InboundAttachmentRegistry implements InboundAttachmentReader {
    private readonly entries;
    private readonly hashBytes;
    constructor(entries?: Map<string, Map<string, InboundAttachmentRecord>>, hashBytes?: HashBytes);
    get(sessionId: string, id: string): InboundAttachmentRecord | undefined;
    listIds(sessionId: string): string[];
    clear(sessionId: string): void;
    put(sessionId: string, bytes: Buffer, mediaType: InboundMediaType): Promise<InboundAttachmentRegistration>;
}
export declare const inboundAttachmentRegistry: InboundAttachmentRegistry;
export {};