import express from "express";
import { Model, ObjectId } from "mongoose";
import { AuthOptions } from "./expressServer";
export interface User {
    _id: ObjectId | string;
    id: string;
    admin: boolean;
    /**
     * We support anonymous users, which do not yet have login information.
     * This can be helpful for pre-signup users.
     */
    isAnonymous?: boolean;
}
export interface UserModel extends Model<User> {
    createAnonymousUser?: (id?: string) => Promise<User>;
    postCreate?: (body: any) => Promise<void>;
    createStrategy(): any;
    serializeUser(): any;
    deserializeUser(): any;
    findByUsername(username: string, findOpts: any): any;
}
export declare function authenticateMiddleware(anonymous?: boolean): any;
export declare function signupUser(userModel: UserModel, email: string, password: string, body?: any): Promise<any>;
/**
 * Generates both an access token (JWT) and a refresh token for a given user.
 *
 * This function:
 * - Signs the user's `_id` into a short-lived JWT (`token`)
 *   and a long-lived refresh token (`refreshToken`).
 * - Supports custom expiration logic
 *   and payload customization via `AuthOptions`.
 * - Reads token secrets, issuer,
 *   and default expirations from environment variables.
 * - Returns `{ token, refreshToken }`,
 *   or `{ token: null, refreshToken: null }` if the user is missing.
 *
 * It is exported to allow external implementations (such as OAuth integrations or other
 * authentication providers) to reuse and customize the same token generation logic.
 * This ensures consistent and secure token issuance across different authentication flows.
 */
export declare const generateTokens: (user: any, authOptions?: AuthOptions) => Promise<{
    token: null;
    refreshToken: null;
} | {
    token: string;
    refreshToken: any;
}>;
export declare function setupAuth(app: express.Application, userModel: UserModel): void;
export declare function addAuthRoutes(app: express.Application, userModel: UserModel, authOptions?: AuthOptions): void;
export declare function addMeRoutes(app: express.Application, userModel: UserModel, _authOptions?: AuthOptions): void;