import https from "https";

export const name = "SpamTitan";
export const url = "https://mailportal.nhsd.net";

const HOST = "mailportal.nhsd.net";
const TIMEOUT_MS = 8000;

// TODO: TitanHQ has extensive API docs — investigate using the SpamTitan API
// for richer status data (queue depth, filtering stats, etc.) rather than
// a simple synthetic check.

// Synthetic check — hit the appliance directly and see if it responds.
// Uses https.request so we can skip self-signed cert verification.
function probe(host) {
  return new Promise((resolve, reject) => {
    const req = https.request(
      {
        hostname: host,
        path: "/",
        method: "HEAD",
        rejectUnauthorized: false, // local appliance may have self-signed cert
        timeout: TIMEOUT_MS,
      },
      (res) => resolve(res.statusCode)
    );

    req.on("timeout", () => {
      req.destroy();
      reject(new Error("Connection timed out"));
    });

    req.on("error", reject);
    req.end();
  });
}

export async function checkStatus() {
  const statusCode = await probe(HOST);
  const ok = statusCode >= 200 && statusCode < 400;

  return {
    name,
    status: ok ? "operational" : "degraded",
    message: ok
      ? `Mail portal responding (HTTP ${statusCode}).`
      : `Unexpected response from mail portal (HTTP ${statusCode}).`,
    lastUpdated: new Date().toISOString(),
  };
}