import { rolldown } from 'rolldown';
import fs from 'fs-extra';
import path from 'path';

const production = process.env.NODE_ENV === 'production';

async function build() {
    try {
        await fs.remove('dist');
        await fs.ensureDir('dist');

        const jsBundle = await rolldown({
            input: 'src/js/script.ts',
            output: {
                file: 'dist/bundle.js',
                format: 'es',
                sourcemap: !production,
            },
        });

        await jsBundle.write();

        await fs.copy('src/css/style.css', 'dist/bundle.css');
        await fs.copy('src/assets', 'dist', {
            overwrite: true,
        });

        let html = await fs.readFile('src/index.html', 'utf8');
        await fs.writeFile('dist/index.html', html);
    } catch (err) {
        console.error('Build failed:', err);
        process.exit(1);
    }
}

build();