import { fetchCategoryList } from '@/api/demo'
import { fetchAllPagedRecords } from '@/utils/fetch-paged-list'
import { buildTreePathLabelFromFlat } from '@/utils/tree-path'

let cachedFlatCategories: any[] = []
let cachedAt = 0
const CACHE_TTL = 60 * 1000

export async function ensureCategoryPathDataLoaded(force = false): Promise<void> {
  if (!force && cachedFlatCategories.length > 0 && Date.now() - cachedAt < CACHE_TTL) return
  const all = await fetchAllPagedRecords((page, pageSize) => fetchCategoryList({ page, pageSize }))
  cachedFlatCategories = all || []
  cachedAt = Date.now()
}

export function formatCategoryPathLabel(categoryId: unknown, fallbackName?: unknown): string {
  const cid = String(categoryId ?? '').trim()
  const fallback = String(fallbackName ?? '').trim()
  if (!cid) return fallback || '—'
  const path = buildTreePathLabelFromFlat(cid, cachedFlatCategories)
  if (path) return path
  return fallback || '—'
}