---
import { getCollection } from 'astro:content';
const pathname = Astro.url.pathname.replace(/\/$/, '') || '/';
const bare = pathname.replace(/^\/(ar|es)(?=\/|$)/, '') || '/';
const pages = await getCollection('pages', ({ data }) => !data.draft);
const posts = await getCollection('blog', ({ data }) => !data.draft);
const available = new Set<string>(['/', '/library', '/es', '/es/library', '/ar', '/ar/library']);
for (const entry of pages) {
  const prefix = entry.data.lang === 'en' ? '' : `/${entry.data.lang}`;
  const route = entry.data.slug === 'index'
    ? prefix || '/'
    : entry.data.slug === 'library'
      ? `${prefix}/library`
      : `${prefix}/${entry.data.slug}`;
  available.add(route);
}
for (const entry of posts) {
  const prefix = entry.data.lang === 'en' ? '' : `/${entry.data.lang}`;
  available.add(`${prefix}/library/${entry.data.slug}`);
}
const choices = [
  { code: 'en', label: 'EN', href: bare },
  { code: 'es', label: 'ES', href: `/es${bare === '/' ? '' : bare}` },
  { code: 'ar', label: 'ع', href: `/ar${bare === '/' ? '' : bare}` }
].filter(({ href }) => available.has(href));
---
<nav class="language-switcher" aria-label="Language">
  {choices.map(({ code, label, href }) => (
    <a href={href} lang={code} aria-current={pathname === href || (href === '/' && pathname === '/') ? 'page' : undefined}>{label}</a>
  ))}
</nav>