import { PKCECodes } from './pkce';
import { OAuthTokenStorage } from './store';
/**
 * Qwen Device Flow OAuth — port từ `internal/auth/qwen/qwen_auth.go`.
 *
 * RFC 8628 Device Authorization Grant: app yêu cầu device_code + user_code,
 * hiển thị user_code để user nhập trên browser, poll token định kỳ.
 */
export declare const QWEN_DEVICE_CODE_URL = "https://chat.qwen.ai/api/v1/oauth2/device/code";
export declare const QWEN_TOKEN_URL = "https://chat.qwen.ai/api/v1/oauth2/token";
export declare const QWEN_CLIENT_ID = "f0304373b74a44d2b584a3fb70ca9e56";
export interface QwenDeviceAuth {
    deviceCode: string;
    userCode: string;
    verificationUri: string;
    verificationUriComplete?: string;
    expiresIn: number;
    intervalSec: number;
    pkce: PKCECodes;
}
export declare function requestQwenDeviceCode(): Promise<QwenDeviceAuth>;
/**
 * Poll token endpoint cho đến khi user đã authorize hoặc hết hạn / lỗi.
 * Throw Error nếu user huỷ / expired.
 */
export declare function pollQwenToken(device: QwenDeviceAuth, account?: string): Promise<OAuthTokenStorage>;
export declare function refreshQwenToken(current: OAuthTokenStorage): Promise<OAuthTokenStorage>;