import type { IExecuteFunctions, IHookFunctions, ILoadOptionsFunctions, IHttpRequestOptions } from 'n8n-workflow';
import type { SinchCredentials, SinchRegion } from '../nodes/Sinch/types';
export declare function clearTokenCache(): void;
/**
 * Return the Econexus base URL for a given region.
 */
export declare function getEconexusBaseUrl(region: SinchRegion): string;
/**
 * Return a Conversation API endpoint via the Econexus Sinch Build proxy.
 */
export declare function getConvAPIEndpoint(region: SinchRegion, path: string): string;
/**
 * Return the Econexus ISS subscriptions URL for a given region.
 */
export declare function getEconexusIssUrl(region: SinchRegion): string;
/**
 * Headers required by the Econexus Sinch Build proxy.
 */
export declare function buildSinchBuildProxyHeaders(credentials: SinchCredentials): Record<string, string>;
/**
 * Get OAuth2.0 access token for Sinch Conversations API.
 * Caches tokens until they expire (typically 1 hour).
 * Uses 55-minute cache (5-minute buffer before expiry).
 */
export declare function getAccessToken(context: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions, credentials: SinchCredentials): Promise<string>;
type SinchRequestContext = IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions;
/**
 * Make an authenticated request to the Sinch Provisioning API.
 * Uses the same OAuth2.0 token as the Conversations API.
 * Base URL is always https://provisioning.api.sinch.com (region-independent).
 */
export declare function makeProvisioningRequest<T = unknown>(context: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions, options: {
    method: 'GET' | 'POST' | 'DELETE' | 'PUT' | 'PATCH';
    endpoint: string;
    body?: IHttpRequestOptions['body'];
    qs?: IHttpRequestOptions['qs'];
}): Promise<T>;
/**
 * Make an authenticated request to the Sinch API via Econexus.
 * Handles OAuth2.0 token management and regional endpoints.
 */
export declare function makeSinchRequest<T = unknown>(context: SinchRequestContext, options: {
    method: 'GET' | 'POST' | 'DELETE' | 'PUT' | 'PATCH';
    endpoint: string;
    body?: IHttpRequestOptions['body'];
    qs?: IHttpRequestOptions['qs'];
}): Promise<T>;
/**
 * Make an authenticated request to the Econexus ISS API.
 */
export declare function makeIssRequest<T = unknown>(context: SinchRequestContext, options: {
    method: 'GET' | 'POST' | 'DELETE' | 'PUT' | 'PATCH';
    subscriptionId?: string;
    body?: IHttpRequestOptions['body'];
}): Promise<T>;
export {};