import { OAuthTokenStorage } from './store';
/**
 * Antigravity OAuth — port từ `internal/auth/antigravity/constants.go`.
 *
 * Giống Gemini ở chỗ dùng Google OAuth chuẩn nhưng client_id riêng + thêm
 * scope `cclog` và `experimentsandconfigs`. API endpoint = cloudcode-pa.
 */
export declare const ANTIGRAVITY_AUTH_URL = "https://accounts.google.com/o/oauth2/v2/auth";
export declare const ANTIGRAVITY_TOKEN_URL = "https://oauth2.googleapis.com/token";
export declare const ANTIGRAVITY_USERINFO_URL = "https://www.googleapis.com/oauth2/v2/userinfo?alt=json";
export declare const ANTIGRAVITY_CLIENT_ID = "1071006060591-tmhssin2h21lcre235vtolojh4g403ep.apps.googleusercontent.com";
export declare const ANTIGRAVITY_CLIENT_SECRET = "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";
export declare const ANTIGRAVITY_DEFAULT_CALLBACK_PORT = 51121;
export declare const ANTIGRAVITY_SCOPES: string[];
export interface AntigravityAuthSession {
    authUrl: string;
    state: string;
    redirectUri: string;
}
export declare function startAntigravityAuth(callbackPort?: number): AntigravityAuthSession;
export declare function exchangeAntigravityCodeForTokens(code: string, redirectUri: string, account?: string): Promise<OAuthTokenStorage>;
export declare function refreshAntigravityToken(current: OAuthTokenStorage): Promise<OAuthTokenStorage>;