export const revalidate = 0

const BASE_URL = 'https://labai.pro'
const DIRECTUS = 'https://cms.dexterlab.pl'

async function fetchSlugs() {
  try {
    const res = await fetch(
      `${DIRECTUS}/items/LabAI?filter[status][_eq]=published&fields=Slug,date_updated&limit=-1`
    )
    return res.ok ? (await res.json()).data ?? [] : []
  } catch { return [] }
}

async function fetchProducts() {
  try {
    const res = await fetch(
      `${DIRECTUS}/items/products?filter[site][_eq]=labai.pro&filter[status][_eq]=published&fields=id,date_updated&limit=-1`
    )
    return res.ok ? (await res.json()).data ?? [] : []
  } catch { return [] }
}

export default async function sitemap() {
  const [articles, products] = await Promise.all([fetchSlugs(), fetchProducts()])

  const static_pages = [
    { url: `${BASE_URL}/`, lastModified: new Date(), changeFrequency: 'daily', priority: 1 },
    { url: `${BASE_URL}/produkty`, lastModified: new Date(), changeFrequency: 'weekly', priority: 0.8 },
    { url: `${BASE_URL}/kontakt`, lastModified: new Date(), changeFrequency: 'monthly', priority: 0.5 },
  ]

  const article_pages = articles
    .filter(a => a.Slug)
    .map(a => ({
      url: `${BASE_URL}/blog/${a.Slug}`,
      lastModified: a.date_updated ? new Date(a.date_updated) : new Date(),
      changeFrequency: 'weekly',
      priority: 0.7,
    }))

  const product_pages = products.map(p => ({
    url: `${BASE_URL}/produkty#${p.id}`,
    lastModified: p.date_updated ? new Date(p.date_updated) : new Date(),
    changeFrequency: 'monthly',
    priority: 0.6,
  }))

  return [...static_pages, ...article_pages, ...product_pages]
}