/// <reference types="node" />
/// <reference types="node" />
/// <reference types="node" />
import { TlsOptions } from 'tls';
import { Server as HTTPSServer } from 'https';
import { Server as HttpServer, IncomingMessage, ServerResponse } from 'http';
import { API } from '../../api';
import { IUpdatesOptions } from '../updates';
export interface IWebhookTransportStartOptions {
    tls?: TlsOptions;
    path?: string;
    port?: number;
    host?: string;
    next?: (req: IncomingMessage, res: ServerResponse) => unknown;
}
export type WebhookTransportCallback = (req: IncomingMessage, res: ServerResponse, next?: (err?: Error) => unknown) => unknown;
export type WebhookTransportKoaCallback = (context: {
    request: {
        body: Record<string, string>;
    };
    body: object;
    status: number;
    set(key: string, value: string): unknown;
}, next: () => unknown) => unknown;
export declare class WebhookTransport {
    started: boolean;
    webhookHandler: (update: object) => unknown;
    protected webhookServer?: HttpServer | HTTPSServer;
    protected api: API;
    private options;
    constructor({ api, ...options }: Omit<IUpdatesOptions, 'upload'>);
    /**
     * Starts the webhook server
     */
    start({ path, tls, host, port: customPort, next, }?: IWebhookTransportStartOptions): Promise<void>;
    /**
     * Stopping gets updates
     */
    stop(): Promise<void>;
    /**
     * Returns webhook callback like http[s] or express
     */
    getWebhookCallback(path?: string): WebhookTransportCallback;
    subscribe(handler: (update: object) => unknown): void;
    /**
     * Returns the middleware for the webhook under koa
     */
    getKoaWebhookMiddleware(): WebhookTransportKoaCallback;
}