// src/lib/cms.ts — server-side Vula CMS fetch helpers (do not import on client)
const VULA_CMS_URL = process.env.VULA_CMS_URL || 'https://ide.vulai.co.za'
const VULA_CMS_PROJECT_ID = process.env.VULA_CMS_PROJECT_ID || ''

export interface CmsItem {
  id: string
  collection: string
  title: string | null
  data: Record<string, unknown>
  status: string
  sortOrder: number
  scheduledAt: string | null
  expiresAt: string | null
  publishedAt: string | null
  createdAt: string
}

async function fetchCollection(collection: string, limit = 20): Promise<CmsItem[]> {
  if (!VULA_CMS_PROJECT_ID) return []
  try {
    const url = `${VULA_CMS_URL}/api/public/cms/${VULA_CMS_PROJECT_ID}/${collection}?status=published&limit=${limit}`
    const res = await fetch(url, { next: { revalidate: 60 } })
    if (!res.ok) return []
    const json = await res.json() as { items?: CmsItem[] }
    return json.items ?? []
  } catch {
    return []
  }
}

export const getCampaigns     = () => fetchCollection('campaigns')
export const getSpecials      = () => fetchCollection('specials')
export const getBusinessHours = () => fetchCollection('business_hours', 7)
export const getPromotions    = () => fetchCollection('promotions')
export const getFeaturedProductIds = async (): Promise<string[]> => {
  const items = await fetchCollection('featured_products', 10)
  return items.flatMap(i => {
    const ids = i.data.product_ids
    return Array.isArray(ids) ? ids as string[] : []
  })
}
export const getBlogPosts        = (limit = 10) => fetchCollection('posts', limit)
export const getAdvertBanners    = ()             => fetchCollection('advert_banners')
export const getProductCarousels = ()             => fetchCollection('product_carousels')