import sharp from 'sharp';
import toIco from 'png-to-ico';
import { promises as fs } from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

const sourceIcon = path.resolve(__dirname, '../../icon.png');
const outputDir = path.resolve(__dirname, '../public');

async function generateIcons() {
  await fs.mkdir(outputDir, { recursive: true });

  // Generate PNGs
  const sizes = [32, 192, 256];
  for (const size of sizes) {
    const outputPath = path.join(outputDir, `icon-${size}.png`);
    await sharp(sourceIcon)
      .resize(size, size)
      .toFile(outputPath);
    console.log(`Generated ${outputPath}`);
  }

  // Generate apple-touch-icon
  const appleIconPath = path.join(outputDir, 'apple-touch-icon.png');
  await sharp(sourceIcon)
    .resize(180, 180)
    .toFile(appleIconPath);
  console.log(`Generated ${appleIconPath}`);

  // Generate favicon.ico
  const icoSizes = [16, 24, 32, 48];
  const buffers = await Promise.all(icoSizes.map(size =>
    sharp(sourceIcon)
      .resize(size, size)
      .png()
      .toBuffer()
  ));
  const icoBuffer = await toIco(buffers);
  const icoPath = path.join(outputDir, 'favicon.ico');
  await fs.writeFile(icoPath, icoBuffer);
  console.log(`Generated ${icoPath}`);
}

generateIcons().catch(err => {
  console.error(err);
  process.exit(1);
});