import { access, readFile } from 'node:fs/promises';
import { resolve } from 'node:path';

const key = process.env.SITE_KEY;
if (!key) throw new Error('SITE_KEY is required.');
const root = resolve(`dist/${key}`);
const required = ['index.html', '404.html', 'robots.txt', 'sitemap.xml'];
if (key === 'www') required.push('about/index.html', 'services/index.html', 'contact/index.html');
for (const file of required) await access(resolve(root, file));

const pages = await Promise.all(required.filter((file) => file.endsWith('.html')).map(async (file) => ({ file, html: await readFile(resolve(root, file), 'utf8') })));
for (const { file, html } of pages) {
  if (html.includes('{{') || html.includes('{%')) throw new Error(`${file} contains an unresolved template placeholder.`);
  if (!/<title>[^<]+<\/title>/.test(html)) throw new Error(`${file} is missing a title.`);
  for (const match of html.matchAll(/(?:src|href)="(\/images\/[^"?#]+)"/g)) await access(resolve(root, `.${match[1]}`));
}

const home = await readFile(resolve(root, 'index.html'), 'utf8');
if (key === 'www') {
  if (!home.includes('What services do you offer?') || !home.includes('How do I book a visit?')) throw new Error('Primary FAQ Markdown entries are missing from the homepage.');
  if (home.includes('What information should I bring to a meet and greet?')) throw new Error('Draft FAQ entry appeared in the homepage.');
}
if (key === 'blog') {
  const publishedPosts = ['first-walk-after-work', 'gentler-grooming-day', 'overnight-care-checklist'];
  await Promise.all(publishedPosts.map((slug) => access(resolve(root, `posts/${slug}/index.html`))));
  if (home.includes('Draft only example for editorial review')) throw new Error('Draft blog post appeared in the journal.');
  try {
    await access(resolve(root, 'posts/draft-only-example/index.html'));
    throw new Error('Draft blog post generated a public page.');
  } catch (error) {
    if (error?.code !== 'ENOENT') throw error;
  }
}
console.log(`Verified ${key}: ${required.join(', ')}`);