// Servidor estático mínimo (sin dependencias) para la suite e2e.
// Sirve la raíz del proyecto (carpeta padre de tests/) por HTTP.
// Uso: node serve.mjs [puerto]   (defecto: env PORT o 4173)
import http from "node:http";
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";

const RAIZ = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
const PUERTO = Number(process.argv[2] || process.env.PORT || 4173);

const TIPOS = {
  ".html": "text/html; charset=utf-8",
  ".css": "text/css; charset=utf-8",
  ".js": "text/javascript; charset=utf-8",
  ".mjs": "text/javascript; charset=utf-8",
  ".json": "application/json; charset=utf-8",
  ".svg": "image/svg+xml",
  ".png": "image/png",
  ".jpg": "image/jpeg",
  ".jpeg": "image/jpeg",
  ".webp": "image/webp",
  ".gif": "image/gif",
  ".ico": "image/x-icon",
  ".mp4": "video/mp4",
  ".mp3": "audio/mpeg",
  ".ogg": "audio/ogg",
  ".pdf": "application/pdf",
  ".txt": "text/plain; charset=utf-8",
  ".md": "text/markdown; charset=utf-8",
};

const servidor = http.createServer((req, res) => {
  let ruta;
  try {
    ruta = decodeURIComponent(new URL(req.url, "http://x").pathname);
  } catch {
    res.writeHead(400).end("Petición inválida");
    return;
  }
  if (ruta.endsWith("/")) ruta += "index.html";
  const archivo = path.resolve(RAIZ, "." + ruta);
  // Evita salir de la raíz (path traversal)
  if (archivo !== RAIZ && !archivo.startsWith(RAIZ + path.sep)) {
    res.writeHead(403).end("Prohibido");
    return;
  }
  fs.stat(archivo, (err, st) => {
    if (err || !st.isFile()) {
      res.writeHead(404, { "Content-Type": "text/plain; charset=utf-8" }).end("No encontrado");
      return;
    }
    res.writeHead(200, {
      "Content-Type": TIPOS[path.extname(archivo).toLowerCase()] || "application/octet-stream",
      "Content-Length": st.size,
      "Cache-Control": "no-store",
    });
    if (req.method === "HEAD") return res.end();
    fs.createReadStream(archivo).pipe(res);
  });
});

servidor.listen(PUERTO, "127.0.0.1", () => {
  console.log(`WAM mockup servido en http://127.0.0.1:${PUERTO}/ (raíz: ${RAIZ})`);
});