// app/api/sitemap/route.js
import { getAllSlugs } from '@/utils/data';
import fs from 'fs';
import path from 'path';

export async function POST(req) {
  const secret = req.headers.get('x-revalidate-secret');
  if (secret !== process.env.REVALIDATE_TOKEN) {
    return new Response('Unauthorized', { status: 401 });
  }
  const slugs = await getAllSlugs();
  const siteUrl = process.env.SITE_URL || 'https://yourdomain.com';
  const urls = slugs.map(slugArr => '/' + slugArr.join('/'));
  const sitemap = `<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
${urls.map(url => `
  <url>
    <loc>${siteUrl}${url}</loc>
    <changefreq>weekly</changefreq>
    <priority>0.7</priority>
  </url>
`).join('')}
</urlset>`;
  fs.writeFileSync(path.join(process.cwd(), 'public/sitemap.xml'), sitemap, 'utf8');
  return new Response('Sitemap regenerated', { status: 200 });
}