// Build the static site into dist/. With --serve, also serve it on

// http://localhost:3000 (localhost counts as a secure context for WebSerial).

import { cp, mkdir, rm } from 'node:fs/promises';

import { join } from 'node:path';

const root = join(import.meta.dir, '..');

const dist = join(root, 'dist');

await rm(dist, { recursive: true, force: true });

await mkdir(dist, { recursive: true });

const result = await Bun.build({

  entrypoints: [join(root, 'web/app.js')],

  outdir: dist,

  target: 'browser',

  minify: true,

  sourcemap: 'linked',

});

if (!result.success) {

  for (const message of result.logs) console.error(message);

  process.exit(1);

}

await cp(join(root, 'web/index.html'), join(dist, 'index.html'));

await cp(join(root, 'web/style.css'), join(dist, 'style.css'));

const size = result.outputs.filter((o) => o.kind === 'entry-point').reduce((n, o) => n + o.size, 0);

console.log(`Built dist/ (app.js ${(size / 1024).toFixed(1)} KB)`);

if (process.argv.includes('--serve')) {

  const server = Bun.serve({

    port: 3000,

    async fetch(req) {

      let path = new URL(req.url).pathname;

      if (path.endsWith('/')) path += 'index.html';

      const file = Bun.file(join(dist, path));

      return (await file.exists()) ? new Response(file) : new Response('Not found', { status: 404 });

    },

  });

  console.log(`Serving on http://localhost:${server.port}`);

}