import { probeTools } from "./tools.mjs";
import type { DoctorReport } from "./tool-types";

// The app's cache of the tool probe. In memory, ten minutes, and NEVER probed
// from a page render: the dashboard reads whatever is here (or nothing) and the
// only writer is POST /api/doctor. Probing seven binaries on every request would
// be a fork/exec tax on a page whose whole point is being cheap to open.

const TTL_MS = 10 * 60 * 1000;
let cache: DoctorReport | null = null;

/** The last probe, or null when nothing has been probed (or it is stale). */
export function toolsCache(): DoctorReport | null {
  if (cache && Date.now() - cache.checkedAt < TTL_MS) return cache;
  return null;
}

export async function probeNow(): Promise<DoctorReport> {
  cache = (await probeTools()) as DoctorReport;
  return cache;
}