import type * as jose from "jose";
import { RESPONSE_TYPES } from "../types/index.js";
import * as cookies from "./cookies.js";
export interface TransactionState extends jose.JWTPayload {
    codeVerifier: string;
    responseType: RESPONSE_TYPES;
    state: string;
    returnTo: string;
    nonce?: string;
    maxAge?: number;
    authSession?: string;
    /**
     * The scope requested for this transaction.
     */
    scope?: string;
    /**
     * The audience used for this transaction.
     */
    audience?: string;
}
export interface TransactionCookieOptions {
    /**
     * The prefix of the cookie used to store the transaction state.
     *
     * Default: `__txn_{state}`.
     */
    prefix?: string;
    /**
     * The sameSite attribute of the transaction cookie.
     *
     * Default: `lax`.
     */
    sameSite?: "strict" | "lax" | "none";
    /**
     * The secure attribute of the transaction cookie.
     *
     * Default: depends on the protocol of the application's base URL. If the protocol is `https`, then `true`, otherwise `false`.
     */
    secure?: boolean;
    /**
     * The path attribute of the transaction cookie. Will be set to '/' by default.
     */
    path?: string;
    /**
     * Specifies the value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.3|Domain Set-Cookie attribute}. By default, no
     * domain is set, and most clients will consider the cookie to apply to only
     * the current domain.
     */
    domain?: string;
    /**
     * The expiration time for transaction cookies in seconds.
     * If not provided, defaults to 1 hour (3600 seconds).
     *
     * @default 3600
     */
    maxAge?: number;
}
export interface TransactionStoreOptions {
    secret: string;
    cookieOptions?: TransactionCookieOptions;
    /**
     * Controls whether multiple parallel login transactions are allowed.
     * When false, only one transaction cookie is maintained at a time.
     * When true (default), multiple transaction cookies can coexist for multi-tab support.
     *
     * @default true
     */
    enableParallelTransactions?: boolean;
}
/**
 * TransactionStore is responsible for storing the state required to successfully complete
 * an authentication transaction. The store relies on encrypted, stateless cookies to store
 * the transaction state.
 */
export declare class TransactionStore {
    private readonly secret;
    private readonly transactionCookiePrefix;
    private readonly cookieOptions;
    private readonly enableParallelTransactions;
    constructor({ secret, cookieOptions, enableParallelTransactions }: TransactionStoreOptions);
    /**
     * Returns the name of the cookie used to store the transaction state.
     * The cookie name is derived from the state parameter to prevent collisions
     * between different transactions.
     */
    private getTransactionCookieName;
    /**
     * Returns the configured prefix for transaction cookies.
     */
    getCookiePrefix(): string;
    /**
     * Saves the transaction state to an encrypted cookie.
     *
     * @param resCookies - The response cookies object to set the transaction cookie on
     * @param transactionState - The transaction state to save
     * @param reqCookies - Optional request cookies to check for existing transactions.
     *                     When provided and `enableParallelTransactions` is false,
     *                     will check for existing transaction cookies. When omitted,
     *                     the existence check is skipped for performance optimization.
     * @throws {Error} When transaction state is missing required state parameter
     */
    save(resCookies: cookies.ResponseCookies, transactionState: TransactionState, reqCookies?: cookies.RequestCookies): Promise<void>;
    get(reqCookies: cookies.RequestCookies, state: string): Promise<jose.JWTDecryptResult<TransactionState> | null>;
    delete(resCookies: cookies.ResponseCookies, state: string): Promise<void>;
    /**
     * Deletes all transaction cookies based on the configured prefix.
     */
    deleteAll(reqCookies: cookies.RequestCookies, resCookies: cookies.ResponseCookies): Promise<void>;
}