import { Request, Response } from "express";
import { Middleware } from "@swirl/api";
import { ObjectID } from "bson";
/** Contains a session for a single user. */
export default class Session {
    /** This session's id. */
    readonly sid: string;
    /** This session's CSRF key. */
    readonly csrfKey: string;
    /** This session's expiration timestamp. */
    readonly expiration: Date;
    /** The user id of the user who owns this session. */
    user: ObjectID;
    /** Construct given the sid and CSRF key. */
    constructor(sid: string, csrfKey: string, expiration: Date);
    /**
     * Creates a new session by generating a random sid and csrfKey.
     * @param ttl the number of minutes this session will be valid for.
     */
    static generate(ttl: number, user: ObjectID): Promise<Session>;
    /** The sessions Redis key. */
    readonly redisKey: string;
    /** The user session Redis key. */
    readonly userSessionKey: string;
    /** Injects the session onto a response by setting the cookies. */
    inject(req: Request, res: Response): Promise<void>;
    /** Clears all the cookies for this request. */
    clear(req: Request, res: Response): void;
}
declare module "express" {
    interface Request {
        /** The valid user session or null if not logged in. */
        session: Session;
    }
}
/** Validates sessions given the groups that are allowed. */
export declare class SessionValidator extends Middleware {
    /** The valid groups that are allowed to access this handler. */
    private readonly groups;
    /** If true then CSRF key validation is disabled for this session validator. */
    private _disableCSRF;
    /** Construct given the valid groups. */
    constructor(...groups: string[]);
    /** Disables CSRF checking for this validator. */
    disableCSRF(): SessionValidator;
    /** Validates the session */
    run(req: Request, res: Response): Promise<void>;
}