import fs from 'node:fs/promises';
import path from 'node:path';

const projectRoot = process.cwd();
const packageJsonPath = path.join(projectRoot, 'package.json');
const distDirectoryPath = path.join(projectRoot, 'dist');
const buildInfoPath = path.join(distDirectoryPath, 'build-info.json');

const packageJson = JSON.parse(await fs.readFile(packageJsonPath, 'utf8'));
const builtAt = new Date().toISOString();

const buildInfo = {
  version: typeof packageJson.version === 'string' ? packageJson.version : '0.0.0',
  buildId: `${typeof packageJson.version === 'string' ? packageJson.version : '0.0.0'}@${builtAt}`,
  builtAt,
};

await fs.mkdir(distDirectoryPath, { recursive: true });
await fs.writeFile(buildInfoPath, JSON.stringify(buildInfo, null, 2));

console.log(`work-server build info written to ${buildInfoPath}`);