import { spawn } from "node:child_process";
let stopping = false,
  worker,
  restartTimer,
  stopTimer;
const server = spawn(process.execPath, ["server.js"], { stdio: "inherit" });
function shutdown(code = 0) {
  if (stopping) return;
  stopping = true;
  process.exitCode = code;
  clearTimeout(restartTimer);
  server.kill("SIGTERM");
  worker?.kill("SIGTERM");
  stopTimer = setTimeout(() => {
    server.kill("SIGKILL");
    worker?.kill("SIGKILL");
    process.exit(code);
  }, 4000);
  stopTimer.unref();
  Promise.all(
    [server, worker]
      .filter(Boolean)
      .map((child) =>
        child.exitCode !== null || child.signalCode !== null
          ? Promise.resolve()
          : new Promise((resolve) => child.once("close", resolve)),
      ),
  ).then(() => {
    clearTimeout(stopTimer);
    process.exit(code);
  });
}
function startWorker() {
  if (stopping) return;
  worker = spawn(process.execPath, ["scripts/notdienst-alarm-worker.mjs"], {
    stdio: "inherit",
  });
  worker.on("close", () => {
    if (stopping) return;
    console.error(
      "Notdienst-Hintergrundjob beendet; Neustart in fünf Sekunden.",
    );
    restartTimer = setTimeout(startWorker, 5000);
  });
  worker.on("error", () => {
    if (!stopping)
      console.error("Notdienst-Hintergrundjob konnte nicht starten.");
  });
}
server.on("exit", (code) => shutdown(code ?? 1));
server.on("error", () => shutdown(1));
for (const signal of ["SIGTERM", "SIGINT"])
  process.on(signal, () => shutdown(0));
if ((process.env.NOTDIENST_JOB_SECRET?.length ?? 0) >= 32) startWorker();
else
  console.warn(
    "Automatische Notdienst-Jobs deaktiviert: gültiges NOTDIENST_JOB_SECRET fehlt.",
  );