// One-off generator, not part of the app's runtime or build. Run manually
// whenever the icon design changes:
//   pnpm --filter @notizarr/web exec node scripts/generate-icons.mjs
// Requires `sharp` (devDependency) — rasterizes the hand-written SVG
// sources into the PNG sizes PWA manifests / iOS actually need. Output is
// committed to public/icons/, so this script does not need to run in CI or
// in the Docker build.
import { mkdir, readFile, writeFile, copyFile } from 'node:fs/promises'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import sharp from 'sharp'

const scriptsDir = fileURLToPath(new URL('.', import.meta.url))
const outDir = path.resolve(scriptsDir, '../public/icons')

async function render(svgPath, outPath, size) {
  const svg = await readFile(svgPath)
  await sharp(svg).resize(size, size).png().toFile(outPath)
  console.log(`wrote ${path.relative(scriptsDir, outPath)} (${size}x${size})`)
}

async function main() {
  await mkdir(outDir, { recursive: true })

  const standard = path.join(scriptsDir, 'icon-standard.svg')
  const maskable = path.join(scriptsDir, 'icon-maskable.svg')

  await render(standard, path.join(outDir, 'icon-192.png'), 192)
  await render(standard, path.join(outDir, 'icon-512.png'), 512)
  await render(maskable, path.join(outDir, 'maskable-512.png'), 512)
  await render(maskable, path.join(outDir, 'apple-touch-icon.png'), 180)

  await copyFile(standard, path.join(outDir, 'favicon.svg'))
  console.log('wrote favicon.svg')

  await writeFile(path.join(outDir, '.gitkeep'), '')
}

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