/**
 * Aggressively compresses all photos in public/assets/photos/ to max 1280px
 * and quality 70 using sharp. Target: all files under 200KB.
 */
import sharp from 'sharp';
import { readdir, stat } from 'fs/promises';
import { join } from 'path';

const PHOTOS_DIR = 'public/assets/photos';
const MAX_WIDTH = 1280;
const QUALITY = 70;
const MAX_BYTES = 200_000;

const files = await readdir(PHOTOS_DIR);
const imageFiles = files.filter(f => /\.(jpg|jpeg|JPG|JPEG)$/i.test(f));

let compressed = 0;
let skipped = 0;

for (const file of imageFiles) {
  const fullPath = join(PHOTOS_DIR, file);
  const { size } = await stat(fullPath);

  if (size <= MAX_BYTES) {
    skipped++;
    continue;
  }

  console.log(`Compressing: ${file} (${Math.round(size / 1024)}KB)`);
  try {
    const buf = await sharp(fullPath)
      .rotate() // auto-orient from EXIF
      .resize({ width: MAX_WIDTH, withoutEnlargement: true })
      .jpeg({ quality: QUALITY, progressive: true, mozjpeg: true })
      .toBuffer();

    await sharp(buf).toFile(fullPath);
    const afterSize = (await stat(fullPath)).size;
    console.log(`  → ${Math.round(afterSize / 1024)}KB (saved ${Math.round((size - afterSize) / 1024)}KB)`);
    compressed++;
  } catch (err) {
    console.error(`  ✗ Failed: ${err.message}`);
  }
}

console.log(`\nDone: ${compressed} compressed, ${skipped} already small.`);