type CacheEntry = { data: any; expiresAt: number }
const shared = globalThis as typeof globalThis & { __materialFacetsCache?: Map<string, CacheEntry> }
const cache = shared.__materialFacetsCache ||= new Map<string, CacheEntry>()
const TTL_MS = 5 * 60 * 1000

export function getMaterialFacetsCache(key: string): any | null {
  const entry = cache.get(key)
  if (!entry) return null
  if (Date.now() > entry.expiresAt) {
    cache.delete(key)
    return null
  }
  return entry.data
}

export function setMaterialFacetsCache(key: string, data: any) {
  if (cache.size > 200) {
    const oldest = cache.keys().next().value
    if (oldest) cache.delete(oldest)
  }
  cache.set(key, { data, expiresAt: Date.now() + TTL_MS })
}

export function invalidateMaterialFacetsCache() {
  cache.clear()
}