// DraftVision 2027 — serveur statique zéro dépendance
// Auteur : Simon-Pierre Boucher — contact@spboucher.ai
// Usage : node server.mjs [port]   (défaut 8100) · healthcheck : /healthz
import { createServer } from "node:http";
import { readFile } from "node:fs/promises";
import { extname, join, normalize } from "node:path";
import { fileURLToPath } from "node:url";

const PORT = Number(process.argv[2]) || 8100;
const RACINE = fileURLToPath(new URL(".", import.meta.url));
const TYPES = { ".html":"text/html; charset=utf-8", ".md":"text/markdown; charset=utf-8",
  ".png":"image/png", ".ico":"image/x-icon", ".txt":"text/plain; charset=utf-8" };

createServer(async (req, res) => {
  const url = new URL(req.url, "http://x");
  if (url.pathname === "/healthz") { res.writeHead(200, {"Content-Type":"application/json"}); return res.end('{"ok":true,"app":"draftvision2027"}'); }
  let chemin = url.pathname === "/" ? "/index.html" : url.pathname;
  chemin = normalize(chemin).replace(/^(\.\.[/\\])+/, "");
  try {
    const donnees = await readFile(join(RACINE, chemin));
    res.writeHead(200, {"Content-Type": TYPES[extname(chemin)] || "application/octet-stream", "Cache-Control":"no-cache"});
    res.end(donnees);
  } catch {
    res.writeHead(404, {"Content-Type":"text/plain; charset=utf-8"});
    res.end("404 — introuvable");
  }
}).listen(PORT, "0.0.0.0", () => console.log(`DraftVision 2027 sur http://0.0.0.0:${PORT}`));