export type JsonValue = string | number | boolean | JsonValue[] | {
    [key: string]: JsonValue;
};
export type JsonOptions = {
    [key: string]: JsonValue;
};
export interface XrayRule {
    type: 'field';
    ip?: string[];
    domain?: string[];
    outboundTag: string;
    remarks?: string;
}
export interface XuiOptions {
    /** URL of the upstream 3x-ui endpoint (without trailing slash). */
    panelAddress: string;
    /** API Token of the 3x-ui panel. */
    token: string;
    /** Inbound IDs of the 3x-ui panel. */
    inboundIds: Array<number | string>;
    /** Debug mode. */
    debug?: boolean;
}
export type QueryType = Record<string, string | string[] | undefined>;
export interface TransformProps {
    json: JsonOptions;
    iso: string;
    subId: string;
    isEU: boolean;
    query?: QueryType;
    requestHeaders?: Record<string, string | string[] | undefined>;
}
export interface TransformResponse {
    transformed: JsonOptions;
    headers: Record<string, string>;
}
export interface CreateServerProps {
    /** URL of the upstream 3x-ui endpoint (without trailing slash). */
    upstreamUrl: string;
    /** Secret path segment protecting this proxy, e.g. `abc123` → `/abc123/json/:id` */
    secretUrl: string;
    /** Directory with JSON rule presets (`RU.json`, `EU.json`, `BASE.json` …). */
    rulesDir: string;
    /** Directory with JSON overrides presets (`RU.json`, `EU.json`, `BASE.json` …). */
    overridesDir?: string;
    /** Inject direct‑route rules for the requester’s own country. */
    directSameCountry?: boolean;
    /** Enable Fastify logger. */
    logger?: boolean;
    /** Public Domain URL of the service. */
    publicURL?: string;
    /** Options for the 3x-ui panel. */
    xuiOptions?: XuiOptions;
    /**
     * Transform the JSON before sending it to the client.
     * @param {Object} props.json - The JSON object to transform.
     * @param {String} props.iso - The ISO code of the country of the requester.
     * @param {String} props.subId - The subscription ID of the requester.
     * @param {Boolean} props.isEU - Whether the requester is in the Europe Union.
     * @param {Object} props.query - Query params for subscription
     * @param {Object} props.requestHeaders - Original request headers params
     * @returns The transformed JSON object.
     */
    transform?: (props: TransformProps) => Promise<TransformResponse>;
}