import http from "node:http";
import { createRuntime, handleBootstrap, handleExposure, loadConfig, nowIso, writeJson } from "./core.mjs";

const PORT = Number(process.env.PORT || 8787);
const runtime = createRuntime(loadConfig(process.env));

const server = http.createServer(async (req, res) => {
  const method = req.method || "GET";
  const url = req.url || "/";

  if (method === "GET" && url === "/health") {
    return writeJson(res, 200, {
      ok: true,
      service: "feature-control-bff",
      time: nowIso(),
      cacheEntries: runtime.cache.size,
      inFlight: runtime.inFlight.size
    });
  }

  if (method === "POST" && url === "/feature-control/bootstrap") {
    return handleBootstrap(req, res, runtime);
  }

  if (method === "POST" && url === "/feature-control/telemetry/exposure") {
    return handleExposure(req, res, runtime);
  }

  return writeJson(res, 404, { ok: false, code: "NOT_FOUND", message: "Rota não encontrada" });
});

server.listen(PORT, () => {
  console.log(`[feature-control-bff] listening on :${PORT}`);
});