// Nahrá statické obrázky aplikácie (supabase/assets/) do Supabase Storage bucketu newsletter-assets.
// Spustenie: npm run db:upload-assets   (číta NEXT_PUBLIC_SUPABASE_URL a SUPABASE_SERVICE_ROLE_KEY z .env.local)
// Existujúce súbory s rovnakým názvom sa prepíšu.
import { createClient } from '@supabase/supabase-js';
import { readdir, readFile } from 'node:fs/promises';
import path from 'node:path';

const BUCKET = 'newsletter-assets';
const ASSETS_DIR = path.join(process.cwd(), 'supabase', 'assets');
const CONTENT_TYPES = {
  '.png': 'image/png',
  '.jpg': 'image/jpeg',
  '.jpeg': 'image/jpeg',
  '.gif': 'image/gif',
  '.svg': 'image/svg+xml',
  '.webp': 'image/webp'
};

const url = process.env.NEXT_PUBLIC_SUPABASE_URL;
const serviceKey = process.env.SUPABASE_SERVICE_ROLE_KEY;
if (!url || !serviceKey) {
  console.error('Chýba NEXT_PUBLIC_SUPABASE_URL alebo SUPABASE_SERVICE_ROLE_KEY v .env.local');
  process.exit(1);
}

const supabase = createClient(url, serviceKey);
const files = (await readdir(ASSETS_DIR)).filter((f) => CONTENT_TYPES[path.extname(f).toLowerCase()]);

let failed = 0;
for (const file of files) {
  const body = await readFile(path.join(ASSETS_DIR, file));
  const { error } = await supabase.storage.from(BUCKET).upload(file, body, {
    contentType: CONTENT_TYPES[path.extname(file).toLowerCase()],
    upsert: true
  });
  if (error) {
    failed++;
    console.error(`✗ ${file}: ${error.message}`);
  } else {
    console.log(`✓ ${file}`);
  }
}

console.log(`\nNahraté ${files.length - failed}/${files.length} súborov do bucketu ${BUCKET}.`);
if (failed) process.exit(1);