import express from "express";
import { hostname } from "node:os";
import { greeting } from "./greeting.js";
import { getUtcTimestamp } from "./services/database.js";

const app = express();
const port = Number(process.env.PORT ?? 3000);
const sha = process.env.GIT_SHA ?? "dev";

app.get("/healthz", (_req, res) => {
  res.type("text/plain").send("ok");
});

app.get("/", (_req, res) => {
  res.json({
    service: "demo-app",
    message: greeting(),
    sha,
    pod: hostname(),
    time: new Date().toISOString(),
  });
});

app.get("/utc-time", async (_req, res) => {
  const utcTime = await getUtcTimestamp();
  if (!utcTime) {
    res.status(503).json({ error: "Database not configured or unavailable" });
    return;
  }
  res.json({ utc_time: utcTime });
});

export { app, port };