import type { Ref } from 'vue';
import type { AuthInstance, AuthState } from '#auth-types';
/**
 * Handles user logout by clearing session data and redirecting.
 * @param strategy - The authentication strategy to log out from.
 * @param redirectPath - The path to redirect after logout.
 * @param middleware - The middleware type, defaults to "auth".
 * @throws An error if called on the server side.
 */
export declare const handleLogout: (strategy: string | null, redirectPath: string, middleware?: string) => Promise<any>;
/**
 * Validates an authentication session based on token and expiration time.
 * @param strategy - The authentication strategy in use.
 * @param session - The authentication token.
 * @param xsrf - Expiration timestamp of the token.
 * @param isServer - Whether the validation is happening on the server side.
 * @returns `true` if the session is valid, otherwise `false`.
 */
export declare const validateSession: (strategy: string | null, session: string | null, xsrf: string | null, isServer: boolean) => boolean;
/**
 * Validates an authentication session based on token and expiration time.
 * @param strategy - The authentication strategy in use.
 * @param token - The authentication token.
 * @param expires - Expiration timestamp of the token.
 * @param isServer - Whether the validation is happening on the server side.
 * @returns `true` if the session is valid, otherwise `false`.
 */
export declare const validateSessionHas2FA: (strategy: string | null, token: string | null, expires: string | null, isServer: boolean) => boolean;
/**
 * Retrieves the appropriate redirect path based on the authentication strategy.
 * @param strategy - The authentication strategy in use.
 * @returns The redirect path for login, callback, or home, defaults to `/` if none is found.
 */
export declare const getRedirectPath: (strategy: string | null) => string;
/**
 * Validates if the auth plugin is properly initialized.
 * @param $auth - The auth plugin instance.
 * @throws An error if the auth plugin is not initialized.
 */
export declare const validateAuthPlugin: ($auth: AuthInstance) => void;
/**
 * Gets the current authentication strategy from cookies.
 * @param $auth - The auth plugin instance.
 * @returns The strategy name or null if not found.
 */
export declare const getCurrentStrategy: ($auth: AuthInstance) => string | null;
/**
 * Sets XSRF token in auth headers if available.
 * @param $auth - The auth plugin instance.
 */
export declare const setXSRFHeaders: ($auth: AuthInstance) => void;
/**
 * Validates the final auth state on client side.
 * @param $auth - The auth plugin instance.
 * @param store - The auth store instance.
 * @returns True if auth state is valid, false otherwise.
 */
export declare const validateClientAuthState: ($auth: AuthInstance, store: Ref<AuthState>) => boolean;
/**
 * Gets the request event for server-side processing.
 * @returns The request event or null if not available.
 */
export declare const getRequestEvent: () => any;