import { Canceler } from './canceler';
import { RetryConfig } from './retry-handler';
export type ResponseBody = any;
export type RequestHeaders = Record<string, boolean | number | string>;
export type Metadata = Record<string, unknown>;
export interface RequestConfig {
    body?: BodyInit | null;
    canceler: Canceler;
    signal?: AbortSignal;
    headers: RequestHeaders;
    method: 'GET' | 'POST' | 'PUT' | 'DELETE' | 'PATCH' | 'HEAD' | 'OPTIONS';
    onUploadProgress?: (evt: ProgressEvent) => void;
    responseType?: 'arraybuffer' | 'blob' | 'document' | 'json' | 'text';
    url: string;
    validateStatus?: (status: number) => boolean;
    withCredentials?: boolean;
}
export type RequestOptions = Partial<RequestConfig> & {
    skipAuthorization?: boolean;
};
export type AuthorizeRequest = (req: RequestConfig, token?: string) => RequestConfig | Promise<RequestConfig>;
export type PreRequest = (req: RequestConfig) => Promise<RequestOptions> | RequestOptions | void;
export type UploadStatus = 'added' | 'queue' | 'uploading' | 'complete' | 'error' | 'cancelled' | 'paused' | 'retry' | 'updated';
export type UploadAction = 'upload' | 'cancel' | 'pause' | 'update';
export interface UploadState {
    /** Uploaded file */
    readonly file: File;
    /** Original file name */
    readonly name: string;
    /** Progress percentage */
    readonly progress: number;
    /** Estimated remaining time */
    readonly remaining: number;
    /** HTTP response body */
    readonly response: ResponseBody;
    /** HTTP response status code */
    readonly responseStatus: number;
    /** HTTP response headers */
    readonly responseHeaders: Record<string, string>;
    /** File size in bytes */
    readonly size: number;
    /** Upload speed bytes/sec */
    readonly speed: number;
    /** Upload status */
    readonly status: UploadStatus;
    /** Unique upload id */
    readonly uploadId: string;
    /** File url */
    readonly url: string;
}
interface UploadItem {
    /**
     * URL to create new uploads.
     * @defaultValue '/upload'
     */
    endpoint?: string;
    /**
     * Headers to be appended to each HTTP request
     */
    headers?: RequestHeaders | ((file: File) => RequestHeaders);
    /**
     * Custom uploads metadata
     */
    metadata?: Metadata | ((file: File) => Metadata);
    /**
     * Authorization token as a `string` or function returning a `string` or `Promise<string>`
     */
    token?: string | ((httpStatus: number) => string | Promise<string>);
}
export interface UploadxControlEvent extends UploadItem {
    readonly uploadId?: string;
    action?: UploadAction;
}
export interface UploaderOptions extends UploadItem {
    retryConfig?: RetryConfig;
    /**
     * Set a fixed chunk size.
     * If not specified, the optimal size will be automatically adjusted based on the network speed.
     */
    chunkSize?: number;
    /** Adaptive chunk size limit */
    maxChunkSize?: number;
    withCredentials?: boolean;
    /**
     * Set the expected server response type
     */
    responseType?: 'json' | 'text' | 'document';
    /**
     * Function called before every request
     */
    prerequest?: PreRequest;
    /**
     * Function used to apply authorization token
     */
    authorize?: AuthorizeRequest;
}
export {};