/**
 * Dev with full PWA precache: production build --watch + preview.
 * Vite HMR cannot precache in-memory modules; use npm run dev for that.
 */
import { build, preview } from 'vite';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const root = path.dirname(fileURLToPath(import.meta.url));
const configFile = path.resolve(root, '../vite.config.js');

const watcher = await build({
  configFile,
  build: { watch: {} },
});

let previewServer;

async function startPreview() {
  if (previewServer) return;
  previewServer = await preview({
    configFile,
    preview: { host: true },
  });
  previewServer.printUrls();
  previewServer.bindCLIShortcuts({ print: true });
}

watcher.on('event', (event) => {
  if (event.code === 'BUNDLE_END') {
    void startPreview();
  }
  if (event.code === 'ERROR') {
    console.error(event.error);
  }
});

async function shutdown() {
  await previewServer?.close();
  await watcher.close();
  process.exit(0);
}

process.on('SIGINT', shutdown);
process.on('SIGTERM', shutdown);