/// <reference types="express" />
import { Response } from 'firebase-functions';
import { Request } from 'firebase-functions/lib/providers/https';
import { AdminBroOptions, CurrentAdmin } from 'admin-bro';
/**
 * @alias BuildHandlerReturn
 *
 * @memberof module:admin-bro-firebase-functions
 */
export declare type BuildHandlerReturn = (req: Request, resp: Response) => Promise<void>;
/**
 * @alias BuildHandlerOptions
 *
 * @memberof module:admin-bro-firebase-functions
 */
export declare type BuildHandlerOptions = {
    /** Region where function is deployed */
    region: string;
    /**
     * Optional before `async` hook which can be used to initialize database.
     * if it returns something it will be used as AdminBroOptions.
     */
    before?: () => Promise<AdminBroOptions | undefined | null> | AdminBroOptions | undefined | null;
    /**
     * custom authentication option. If given AdminBro will render login page
     */
    auth?: {
        /**
         * secret which is used to encrypt the session cookie
         */
        secret: string;
        /**
         * authenticate function
         */
        authenticate: (email: string, password: string) => Promise<CurrentAdmin | null> | CurrentAdmin | null;
        /**
         * For how long cookie session will be stored.
         * Default to 900000 (15 minutes).
         * In milliseconds.
         */
        maxAge?: number;
    };
};
/**
 * Builds the handler which can be passed to firebase functions
 *
 * usage:
 *
 * ```javascript
 * const functions = require('firebase-functions')
 * const { buildHandler } = require('admin-bro')
 *
 * const adminOptions = {...}
 * const region = '...'
 *
 * exports.app = functions.https.onRequest(buildHandler(adminOptions, { region }));
 *
 * ```
 *
 * @alias buildHandler
 * @param  {AdminBroOptions} adminOptions       options which are used to initialize
 *                                              AdminBro instance
 * @param  {BuildHandlerOptions} options        custom options for admin-bro-firebase-functions
 *                                              adapter
 * @return {BuildHandlerReturn}                 function which can be passed to firebase
 * @function
 * @memberof module:admin-bro-firebase-functions
 */
export declare const buildHandler: (adminOptions: AdminBroOptions, options: BuildHandlerOptions) => BuildHandlerReturn;