/**
 * Shared OAuth flow for Google-style providers (Gemini CLI, Antigravity).
 *
 * Both providers use the same authorization-code flow shape; only the client
 * credentials, scopes, endpoint constants, and project-discovery logic differ.
 */
import { OAuthCallbackFlow } from "./callback-server";
import type { OAuthController, OAuthCredentials } from "./types";
export interface GoogleOAuthFlowConfig {
    clientId: string;
    clientSecret: string;
    authUrl: string;
    tokenUrl: string;
    scopes: string[];
    callbackPort: number;
    callbackPath: string;
    discoverProject: (accessToken: string, onProgress?: (message: string) => void) => Promise<string>;
}
export declare class GoogleOAuthFlow extends OAuthCallbackFlow {
    private readonly config;
    constructor(ctrl: OAuthController, config: GoogleOAuthFlowConfig);
    generateAuthUrl(state: string, redirectUri: string): Promise<{
        url: string;
        instructions?: string;
    }>;
    exchangeToken(code: string, _state: string, redirectUri: string): Promise<OAuthCredentials>;
}
export declare function runGoogleOAuthLogin(ctrl: OAuthController, config: GoogleOAuthFlowConfig): Promise<OAuthCredentials>;