/**
 * External File Upload API Client
 *
 * Handles communication with the external file upload service.
 * Provides methods for initiating uploads and marking them complete.
 */
export interface InitiateUploadRequest {
    owner_type: 'conversation' | 'user';
    file_name: string;
    mime_type: string;
    document_type?: string;
    storage_backend_name?: string;
}
export interface InitiateUploadResponse {
    content_id: string;
    upload_url: string;
    status: string;
    created_at: string;
}
export interface UploadCompleteRequest {
    content_id: string;
}
export interface UploadCompleteResponse {
    content_id: string;
    status: 'uploaded' | 'processing' | 'available';
    file_size: number;
    mime_type: string;
}
export declare class FileUploadApiError extends Error {
    statusCode?: number | undefined;
    response?: any | undefined;
    constructor(message: string, statusCode?: number | undefined, response?: any | undefined);
}
export declare class FileUploadApi {
    private apiUrl;
    private getAuthHeaders;
    constructor(apiUrl: string, getAuthHeaders: () => Promise<Record<string, string>> | Record<string, string>);
    /**
     * Initiate a file upload and get a presigned URL
     */
    initiateUpload(request: InitiateUploadRequest): Promise<InitiateUploadResponse>;
    /**
     * Mark an upload as complete
     */
    uploadComplete(contentId: string): Promise<UploadCompleteResponse>;
}
//# sourceMappingURL=fileUploadApi.d.ts.map