import { PKCECodes } from './pkce';
import { OAuthTokenStorage } from './store';
/**
 * Codex (Sign in with ChatGPT) OAuth flow — port từ CLIProxyAPI
 * `internal/auth/codex/openai_auth.go`.
 *
 * Constants giống Codex CLI để OpenAI nhận diện là Codex CLI.
 */
export declare const CODEX_AUTH_URL = "https://auth.openai.com/oauth/authorize";
export declare const CODEX_TOKEN_URL = "https://auth.openai.com/oauth/token";
export declare const CODEX_CLIENT_ID = "app_EMoamEEZ73f0CkXaXp7hrann";
export declare const CODEX_REDIRECT_URI = "http://localhost:1455/auth/callback";
export declare const CODEX_SCOPE = "openid email profile offline_access";
export interface CodexAuthSession {
    authUrl: string;
    state: string;
    pkce: PKCECodes;
}
export declare function startCodexAuth(): CodexAuthSession;
export declare function exchangeCodexCodeForTokens(code: string, pkce: PKCECodes, account?: string): Promise<OAuthTokenStorage>;
export declare function refreshCodexToken(current: OAuthTokenStorage): Promise<OAuthTokenStorage>;