import { readFile, writeFile, cp, mkdir } from 'node:fs/promises';
import { resolve, join } from 'node:path';

// Run after npm run build. Use a new asset ID for every deployment to avoid
// mixing cached JavaScript from different versions on the static server.
const [version, assetId, destination] = process.argv.slice(2);
if (!/^v\d+$/.test(version || '') || !/^[a-zA-Z0-9-]+$/.test(assetId || '') || !destination) {
  throw new Error('Usage: node scripts/package-release.mjs v2 <unique-asset-id> <output-directory>');
}
const output = resolve(destination);
const prefix = `/games/hextrails/${assetId}/`;
await mkdir(output, { recursive: true });
await cp('dist', join(output, assetId), { recursive: true, errorOnExist: true, force: false });
const html = (await readFile('dist/index.html', 'utf8')).replace(/(href|src)="(?!#|https?:|\/)([^"]+)"/g,
  (_, attr, path) => `${attr}="${prefix}${path}"`);
await writeFile(join(output, `${version}.html`), html);
for (const name of ['src/sprites.js', 'src/ui-skin.js']) {
  const path = join(output, assetId, name);
  await writeFile(path, (await readFile(path, 'utf8')).replaceAll("'assets/", `'${prefix}assets/`));
}
console.log(`Release package: ${output}/${version}.html`);