import { type OptimizelyGraphConfigInternal, type OptimizelyGraphConfig } from "../config.js";
import { GraphQLClient, type RequestMiddleware } from "graphql-request";
import { AuthMode, type RequestMethod, type IOptiGraphClient, type OptiGraphSiteInfo, type IOptiGraphClientFlags, type OptiCmsSchema, type FrontendUser, SchemaVersion } from "./types.js";
import { type FetchAPI } from "../hmac-fetch.js";
export declare class ContentGraphClient extends GraphQLClient implements IOptiGraphClient {
    static readonly ForceHmacToken: string;
    static readonly ForceBasicAuth: string;
    protected readonly _config: Readonly<OptimizelyGraphConfigInternal>;
    private _user;
    private _token;
    private _hmacFetch;
    private _flags;
    private _customMiddleware;
    get currentOptiCmsSchema(): OptiCmsSchema;
    get debug(): boolean;
    get frontendUser(): FrontendUser | undefined;
    protected get token(): string | undefined;
    protected set token(newValue: string | undefined);
    protected get hmacFetch(): FetchAPI;
    get siteInfo(): OptiGraphSiteInfo;
    get currentAuthMode(): AuthMode;
    get graphSchemaVersion(): SchemaVersion;
    constructor(config?: OptimizelyGraphConfig, token?: AuthMode | string | undefined, flags?: Partial<IOptiGraphClientFlags>);
    /**
     * Update the authentication data for this client.
     * - Set to AuthMode.HMAC or AuthMode.Basic to use that authentication scheme, this requires the AppKey and Secret to be part of the configuration
     * - Set to the actual token to be used to switch to AuthMode.Token
     * - Set to undefined or AuthMode.Public to switch to public, read-only mode. (i.e. using the SingleKey)
     *
     * @param       tokenOrAuthmode     The authentication mode/token to be used
     * @returns     The client itself
     */
    updateAuthentication(tokenOrAuthmode?: string | AuthMode | undefined): ContentGraphClient;
    toJSON(key?: string): OptimizelyGraphConfig;
    setRequestMiddleware(additionalMiddleware: RequestMiddleware): ContentGraphClient;
    query: RequestMethod;
    private _oldFlags;
    updateFlags(newFlags: Partial<IOptiGraphClientFlags>, temporary?: boolean): IOptiGraphClient;
    restoreFlags(): IOptiGraphClient;
    setFrontendUser(newUser: FrontendUser | null): boolean;
    protected updateRequestConfig(): void;
    /**
     * Build headers that are shared across authentication modes, taking
     * the current feature flags and authentication into consideration.
     *
     * @returns The default header set
     */
    protected buildDefaultHeaders(): Record<string, string>;
    protected buildUrlWithFlags(): string;
    /**
     * Check on the cache, to ensure it's only reported as enabled if the client
     * is in "public access" mode.
     *
     * @returns The cache status
     */
    protected get cacheEnabled(): boolean;
    private _changeset;
    enablePreview(changeset?: string): IOptiGraphClient;
    disablePreview(): IOptiGraphClient;
    isPreviewEnabled(): boolean;
    getChangeset(): string | null;
}
export default ContentGraphClient;