/**
 * @since 0.1.0
 */
export interface GoogleSignInPlugin {
    /**
     * Handle the redirect callback from the OAuth provider.
     *
     * This method must be called when the app is redirected back from the OAuth provider.
     * It exchanges the authorization code for tokens and returns the sign-in result.
     *
     * Only available on Web.
     *
     * @since 0.1.0
     */
    handleRedirectCallback(): Promise<SignInResult>;
    /**
     * Initialize the Google Sign-In plugin.
     *
     * This method must be called once before all other methods.
     *
     * @since 0.1.0
     */
    initialize(options: InitializeOptions): Promise<void>;
    /**
     * Start the Google Sign-In flow.
     *
     * On Web, this redirects to the Google OAuth authorization page.
     * The promise will never resolve on Web. After the user signs in,
     * the app will be redirected back to the `redirectUrl`.
     * Use `handleRedirectCallback()` to complete the sign-in flow.
     *
     * @since 0.1.0
     */
    signIn(options?: SignInOptions): Promise<SignInResult>;
    /**
     * Sign out the current user.
     *
     * On Android, this clears the credential state.
     * On iOS, this signs out from the Google Sign-In SDK.
     * On Web, this is a no-op.
     *
     * @since 0.1.0
     */
    signOut(): Promise<void>;
}
/**
 * @since 0.1.0
 */
export interface InitializeOptions {
    /**
     * The web client ID from Google Cloud Console.
     *
     * On Android, this is passed as the server client ID to the Credential Manager API
     * and the AuthorizationClient API.
     * On iOS, this is used as the server client ID for the Google Sign-In SDK.
     * On Web, this is used to initialize the Google Sign-In JavaScript API.
     *
     * **Attention**: This must be a web client ID on all platforms, even on Android and iOS.
     *
     * @since 0.1.0
     * @example "123456789-abc.apps.googleusercontent.com"
     */
    clientId: string;
    /**
     * The URL to redirect to after the OAuth flow.
     *
     * Only available on Web.
     *
     * @since 0.1.0
     * @example "http://localhost:4200"
     */
    redirectUrl?: string;
    /**
     * The OAuth scopes to request.
     *
     * If provided, the plugin will request authorization in addition to authentication.
     * This enables `accessToken` and `serverAuthCode` in the sign-in result.
     *
     * @since 0.1.0
     * @example ["https://www.googleapis.com/auth/drive.file"]
     */
    scopes?: string[];
}
/**
 * @since 0.1.0
 */
export interface SignInOptions {
    /**
     * A nonce to prevent replay attacks.
     *
     * Only available on Android and Web.
     *
     * @since 0.1.0
     */
    nonce?: string;
}
/**
 * @since 0.1.0
 */
export interface SignInResult {
    /**
     * The ID token (JWT) returned by Google.
     *
     * This token can be sent to your backend for verification.
     *
     * @since 0.1.0
     */
    idToken: string;
    /**
     * The unique identifier of the user's Google Account.
     *
     * @since 0.1.0
     */
    userId: string;
    /**
     * The user's email address.
     *
     * @since 0.1.0
     */
    email: string | null;
    /**
     * The user's display name (full name).
     *
     * @since 0.1.0
     */
    displayName: string | null;
    /**
     * The user's given name (first name).
     *
     * @since 0.1.0
     */
    givenName: string | null;
    /**
     * The user's family name (last name).
     *
     * @since 0.1.0
     */
    familyName: string | null;
    /**
     * The URL of the user's profile picture.
     *
     * @since 0.1.0
     */
    imageUrl: string | null;
    /**
     * The access token for accessing Google APIs.
     *
     * Only available when `scopes` are configured in `initialize()`.
     *
     * @since 0.1.0
     */
    accessToken: string | null;
    /**
     * The server auth code that can be exchanged on your backend
     * for access and refresh tokens.
     *
     * Only available on Android and iOS when `scopes` are configured in `initialize()`.
     *
     * @since 0.1.0
     */
    serverAuthCode: string | null;
}
/**
 * @since 0.1.0
 */
export declare enum ErrorCode {
    /**
     * The user canceled the sign-in flow.
     *
     * @since 0.1.0
     */
    SignInCanceled = "SIGN_IN_CANCELED"
}