import { Result } from '../types/types';
import { TokenProvider } from '../types/token';
import { HttpClient, HttpProtocol } from '../types/http';
import { LogLevel } from '../helper/logger';
import { UploadContext, Progress as BaseProgress } from './common/context';
import { DirectUploadContext, DirectUploadProgressKey } from './direct';
import { MultipartUploadV1Context, MultipartUploadV1ProgressKey } from './multipartv1';
import { MultipartUploadV2Context, MultipartUploadV2ProgressKey } from './multipartv2';
export interface UploadConfig {
    /** 自定义变量；本次上传任务的自定义变量，关于使用请参考：https://developer.qiniu.com/kodo/1235/vars#xvar */
    vars?: Record<string, string>;
    /**
     * 服务的接口地址；默认为七牛公有云，示例：https://api.qiniu.com
     * 该配置仅当未设置 uploadHosts 时生效 SDK 将会通过指定的 api 服务提供的接口来动态获取上传地址
     * 私有云请联系集群运维人员，并确认集群是否支持 v4/query 接口
    */
    apiServerUrl?: string;
    /** 上传服务地址，手动指定上传服务地址，示例：up.qiniu.com */
    uploadHosts?: string[];
    /** 日志级别；默认为 NONE，即不输出任何日志 */
    logLevel?: LogLevel;
    /** 接口调用使用的协议；默认为 HTTPS */
    protocol?: HttpProtocol;
    /** 发送请求的 client；所有的请求将会通过指定的 client 发出 */
    httpClient?: HttpClient;
    /** 上传 token 提供器；SDK 通过该接口获取上传 Token */
    tokenProvider: TokenProvider;
}
export declare type Context = DirectUploadContext | MultipartUploadV1Context | MultipartUploadV2Context;
export declare type Progress = BaseProgress<DirectUploadProgressKey | MultipartUploadV1ProgressKey | MultipartUploadV2ProgressKey>;
export declare type OnError<C extends UploadContext> = (error: C['error'], context: C) => void;
export declare type OnComplete<C extends UploadContext> = (result: C['result'], context: C) => void;
export declare type OnProgress<C extends UploadContext> = (progress: C['progress'], context: C) => void;
export interface UploadTask<C extends UploadContext = Context> {
    onProgress(fn: OnProgress<C>): void;
    onComplete(fn: OnComplete<C>): void;
    onError(fn: OnError<C>): void;
    cancel(): Promise<Result>;
    start(): Promise<Result>;
}