import { type CognitoJwtExtractor, CognitoJwtVerifier } from "@nestjs-cognito/core";
import { CanActivate, ExecutionContext } from "@nestjs/common";
import { Reflector } from "@nestjs/core";
import { User } from "./user/user.model";
/**
 * Abstract guard class that implements authentication logic for routes.
 * Handles both public and protected routes with JWT verification.
 *
 * @abstract
 * @class AbstractGuard
 * @implements {CanActivate}
 */
export declare abstract class AbstractGuard implements CanActivate {
    #private;
    constructor(jwtVerifier: CognitoJwtVerifier, reflector: Reflector, jwtExtractor: CognitoJwtExtractor);
    /**
     * Determines if a request can activate a route.
     * Handles authentication for both public and protected routes.
     *
     * @param {ExecutionContext} context - The execution context
     * @returns {Promise<boolean>} True if the request can activate the route, false otherwise
     */
    canActivate(context: ExecutionContext): Promise<boolean>;
    /**
     * Abstract method to validate the authenticated user.
     * Implementations should define specific validation logic.
     *
     * @abstract
     * @protected
     * @param {User} user - The authenticated user to validate
     * @returns {boolean} True if the user is valid, false otherwise
     */
    protected abstract onValidate(user: User): boolean;
    /**
     * Abstract method to extract the request object from the execution context.
     * Implementations should handle different types of requests (HTTP, WebSocket, etc.).
     *
     * @abstract
     * @protected
     * @param {ExecutionContext} context - The execution context
     * @returns {any} The request object
     */
    protected abstract getRequest(context: ExecutionContext): any;
}
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