#!/usr/bin/env node
// Génère les fallbacks PNG du favicon (apple-touch-icon + 32px) depuis public/favicon.svg.
// Lancé à la demande quand le SVG change : `node scripts/build-favicon.mjs`.

import sharp from 'sharp';
import { readFileSync } from 'node:fs';
import { resolve, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';

const __dirname = dirname(fileURLToPath(import.meta.url));
const SVG = resolve(__dirname, '../public/favicon.svg');
const buf = readFileSync(SVG);

const outputs = [
  { path: '../public/apple-touch-icon.png', size: 180 },
  { path: '../public/favicon-32.png', size: 32 },
  { path: '../public/favicon-192.png', size: 192 },
];

for (const o of outputs) {
  const dest = resolve(__dirname, o.path);
  await sharp(buf, { density: 384 })
    .resize(o.size, o.size, { fit: 'contain', background: { r: 0, g: 0, b: 0, alpha: 0 } })
    .png({ compressionLevel: 9 })
    .toFile(dest);
  console.log(`Wrote ${dest} (${o.size}×${o.size})`);
}