import http from "node:http";
import { readFile } from "node:fs/promises";
import composition from "./compose.cjs";

// Development-only routes. Never expose the workspace or forward API requests.
const routes = new Map([
  ["/", ["../tests/fixtures/extension.html", "text/html"]],
  ["/extension.js", ["../tests/fixtures/extension.js", "text/javascript"]],
  ["/consumption-trend.html", ["../tests/fixtures/consumption-trend.html", "text/html"]]
]);
const server = http.createServer(async (request, response) => {
  const pathname = new URL(request.url, "http://127.0.0.1").pathname;
  response.setHeader("Cache-Control", "no-store");
  response.setHeader("X-Content-Type-Options", "nosniff");
  if (request.method !== "GET") {
    response.writeHead(405).end();
    return;
  }
  try {
    if (pathname === "/fixture-runtime.js") {
      response.setHeader("Content-Type", "text/javascript");
      response.end(`window.createFixtureApplication = ${composition.composeScript("content", { bootstrap: false })}`);
      return;
    }
    const route = routes.get(pathname);
    if (!route) {
      response.writeHead(404).end();
      return;
    }
    response.setHeader("Content-Type", `${route[1]}; charset=utf-8`);
    response.end(await readFile(new URL(route[0], import.meta.url)));
  } catch {
    response.writeHead(500).end("Fixture could not be loaded.");
  }
});
server.listen(Number(process.env.PORT) || 0, "127.0.0.1", () => {
  console.log(`Synthetic extension preview: http://127.0.0.1:${server.address().port}/`);
});