const http = require("http");

const port = Number(process.env.API_INTERNAL_PORT || 3001);
const serviceName = process.env.SERVICE_NAME || "video-games-api";

function sendJson(response, statusCode, payload) {
  response.writeHead(statusCode, { "Content-Type": "application/json; charset=utf-8" });
  response.end(JSON.stringify(payload));
}

const server = http.createServer((request, response) => {
  const url = new URL(request.url || "/", `http://${request.headers.host || "localhost"}`);

  if (request.method === "GET" && url.pathname === "/health") {
    sendJson(response, 200, {
      status: "ok",
      service: serviceName,
      timestamp: new Date().toISOString(),
    });
    return;
  }

  sendJson(response, 404, {
    status: "not_found",
    message: "Route not found",
  });
});

server.listen(port, "0.0.0.0", () => {
  // Keep startup logs minimal and readable in docker compose logs.
  console.log(`${serviceName} listening on port ${port}`);
});