// Zero-dep static server for the voyage2026 itinerary.
// Usage: node server.mjs [port]  — serves this directory, / -> index, /healthz -> ok
import { createServer } from "node:http";
import { readFile } from "node:fs/promises";
import { join, extname, normalize } from "node:path";
import { fileURLToPath } from "node:url";

const ROOT = fileURLToPath(new URL(".", import.meta.url));
const PORT = Number(process.argv[2] || process.env.PORT || 8060);
const INDEX = "itineraire-toronto-2026.html";

const MIME = {
  ".html": "text/html; charset=utf-8",
  ".css": "text/css; charset=utf-8",
  ".js": "text/javascript; charset=utf-8",
  ".json": "application/json",
  ".png": "image/png",
  ".jpg": "image/jpeg",
  ".jpeg": "image/jpeg",
  ".webp": "image/webp",
  ".svg": "image/svg+xml",
  ".ico": "image/x-icon",
  ".pdf": "application/pdf",
};

createServer(async (req, res) => {
  const url = new URL(req.url, "http://x");
  if (url.pathname === "/healthz") {
    res.writeHead(200, { "content-type": "text/plain" });
    return res.end("ok");
  }
  let path = decodeURIComponent(url.pathname);
  if (path === "/" || path === "/index.html") path = "/" + INDEX;
  const file = normalize(join(ROOT, path));
  if (!file.startsWith(ROOT)) {
    res.writeHead(403);
    return res.end("forbidden");
  }
  try {
    const body = await readFile(file);
    res.writeHead(200, {
      "content-type": MIME[extname(file).toLowerCase()] || "application/octet-stream",
      "cache-control": "public, max-age=300",
    });
    res.end(body);
  } catch {
    res.writeHead(404, { "content-type": "text/plain; charset=utf-8" });
    res.end("404 — page introuvable");
  }
}).listen(PORT, "0.0.0.0", () => {
  console.log(`voyage2026 static server on http://0.0.0.0:${PORT} (root: ${ROOT})`);
});