import { XeroClient } from "xero-node";

/**
 * Creates a XeroClient using an already-valid access token.
 *
 * IMPORTANT:
 * - Token refresh is handled elsewhere (auth.ts)
 * - This client MUST NOT call refreshToken()
 */
export function getXeroClient(accessToken: string): XeroClient {
  if (!accessToken) {
    throw new Error("Xero access token missing");
  }

  const xero = new XeroClient();

  xero.setTokenSet({
    access_token: accessToken,
    token_type: "Bearer",
  });

  return xero;
}