import type { Readable } from "node:stream";
import { type OpenFileLimits } from "../contracts.js";
import { type ResolvedSourceFile, type StoredFileMetadata } from "../storage/repository.js";
export interface UploadServiceOptions {
    readonly resolveWorkspace: (sessionId: string) => Promise<string | null>;
    readonly limits?: Readonly<OpenFileLimits>;
    readonly createUploadId?: () => string;
    readonly createFileId?: () => string;
    readonly now?: () => Date;
}
export interface PreparedUpload {
    readonly uploadId: string;
    readonly fileId: string;
    readonly size: number;
}
export interface StreamedUpload {
    readonly received: number;
    readonly sourceSha256: string;
}
export declare class UploadService {
    readonly limits: Readonly<OpenFileLimits>;
    private readonly resolveWorkspace;
    private readonly createUploadId;
    private readonly createFileId;
    private readonly now;
    private readonly activeWrites;
    constructor(options: UploadServiceOptions);
    prepare(input: {
        readonly sessionId: string;
        readonly name: string;
        readonly size: number;
        readonly declaredType?: string | null;
    }): Promise<PreparedUpload>;
    write(input: {
        readonly sessionId: string;
        readonly uploadId: string;
        readonly bytes: Readable;
        readonly signal?: AbortSignal;
    }): Promise<StreamedUpload>;
    commit(input: {
        readonly sessionId: string;
        readonly uploadId: string;
        readonly expectedSha256?: string;
    }): Promise<StoredFileMetadata>;
    cancel(input: {
        readonly sessionId: string;
        readonly uploadId: string;
    }): Promise<void>;
    adopt(input: {
        readonly sessionId: string;
        readonly fileId: string;
    }): Promise<void>;
    resolve(input: {
        readonly sessionId: string;
        readonly fileRef: string;
    }): Promise<StoredFileMetadata>;
    resolveSource(input: {
        readonly sessionId: string;
        readonly fileRef: string;
    }): Promise<ResolvedSourceFile>;
    private repository;
    private recordPath;
    private loadRecord;
    private saveRecord;
    private assertRecordSession;
    private listRecords;
}