import { NestMiddleware } from '@nestjs/common';
import { Request, Response, NextFunction } from 'express';
import type { SessionOptions } from '@wristband/express-auth';
/**
 * NestJS middleware for Wristband session management.
 *
 * This middleware wraps the Wristband express-auth session middleware to provide session
 * functionality in NestJS applications. It handles session creation, persistence, and
 * management using secure, encrypted cookies.
 *
 * The middleware automatically:
 * - Creates and manages encrypted session cookies
 * - Handles session lifecycle (creation, updates, destruction)
 * - Supports CSRF protection when enabled
 * - Provides session data access via `req.session`
 *
 * NOTE: Importing this middleware automatically augments `Express.Request` with the `session` property.
 *
 * @remarks
 * This middleware should be applied globally in your application to ensure sessions are
 * available to all routes. It is typically configured through `WristbandExpressSessionModule`.
 *
 * @see {@link WristbandExpressSessionModule} for module configuration
 * @see {@link SessionOptions} for available session configuration options
 *
 * @example
 * ```typescript
 * // Apply globally in AppModule
 * export class AppModule implements NestModule {
 *   configure(consumer: MiddlewareConsumer) {
 *     consumer
 *       .apply(WristbandExpressSessionMiddleware)
 *       .forRoutes('*');
 *   }
 * }
 * ```
 *
 * @example
 * ```typescript
 * // Access session in a controller
 * import '@wristband/nestjs-auth/session'; // Enable req.session typing
 *
 * @Controller('api')
 * export class MyController {
 *   @Get('user')
 *   getUser(@Req() req: Request) {
 *     const userId = req.session.userId;
 *     return { userId };
 *   }
 * }
 * ```
 */
export declare class WristbandExpressSessionMiddleware implements NestMiddleware {
    private sessionMiddleware;
    /**
     * Creates an instance of WristbandExpressSessionMiddleware.
     *
     * The session middleware is created once during construction and reused for all requests,
     * ensuring optimal performance and consistent session behavior.
     *
     * @param sessionOptions - Configuration options for session management, injected via SESSION_OPTIONS_TOKEN
     */
    constructor(sessionOptions: SessionOptions);
    /**
     * Middleware handler that processes session for each request.
     *
     * This method is called for every request that passes through this middleware.
     * It delegates to the underlying Wristband session middleware to handle session
     * creation, retrieval, and persistence.
     *
     * @param req - Express request object
     * @param res - Express response object
     * @param next - Express next function to pass control to the next middleware
     * @returns Promise that resolves when session processing is complete
     */
    use(req: Request, res: Response, next: NextFunction): Promise<any>;
}