cats/server/src/scripts/gen-thumbs.ts

import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';
import sharp from 'sharp';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const uploadsDir = path.join(__dirname, '..', '..', 'uploads');

async function main() {
  const files = fs.readdirSync(uploadsDir);
  const candidates = files.filter(
    f => f.endsWith('.jpg') && !f.endsWith('_thumb.jpg')
  );

  console.log(`Found ${candidates.length} images to process`);
  let created = 0;
  let skipped = 0;

  for (const filename of candidates) {
    const thumbFilename = filename.replace(/\.jpg$/, '_thumb.jpg');
    const thumbPath = path.join(uploadsDir, thumbFilename);

    if (fs.existsSync(thumbPath)) {
      skipped++;
      continue;
    }

    try {
      await sharp(path.join(uploadsDir, filename))
        .resize({ width: 600, withoutEnlargement: true })
        .jpeg({ quality: 80 })
        .toFile(thumbPath);
      created++;
      console.log(`  ✓ ${thumbFilename}`);
    } catch (err) {
      console.error(`  ✗ ${filename}: ${err}`);
    }
  }

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

main().catch(console.error);