import { requestGetJson } from '@/shared/api/http'

export interface PermissionMenuItem {
  id: number | string
  name?: string
  column_key?: string
  columnKey?: string
  route_path?: string
  routePath?: string
  menu_type?: string
  sort_order?: number
  created_at?: string
}

interface PermissionMenuResponse {
  success: boolean
  data?: PermissionMenuItem[]
  items?: PermissionMenuItem[]
  error?: string
  message?: string
}

function getCurrentUserId() {
  const raw = typeof window === 'undefined' ? '' : window.localStorage.getItem('uid') || ''
  const value = Number(raw)
  if (!Number.isFinite(value) || value <= 0) {
    throw new Error('未获取到用户ID')
  }
  return value
}

function getAppPermissionCacheKey(uid: number) {
  return `app_column_permissions:${String(uid)}`
}

function getAuthToken() {
  return typeof window === 'undefined' ? '' : window.localStorage.getItem('aiimage_auth_token') || ''
}

function normalizeColumnKeys(items: PermissionMenuItem[] | undefined) {
  const keys = new Set<string>()
  for (const item of items || []) {
    for (const value of [item.column_key, item.columnKey, item.route_path, item.routePath]) {
      const key = String(value || '').trim().toLowerCase()
      if (key) {
        keys.add(key)
      }
    }
  }
  return Array.from(keys)
}

export async function getCurrentUserAppColumnKeys() {
  const uid = getCurrentUserId()
  const cacheKey = getAppPermissionCacheKey(uid)

  try {
    const cachedItems = JSON.parse(window.localStorage.getItem(cacheKey) || 'null') as PermissionMenuItem[] | null
    if (Array.isArray(cachedItems)) {
      const cachedKeys = normalizeColumnKeys(cachedItems)
      if (cachedKeys.length) {
        return cachedKeys
      }
    }
  } catch (_error) {}

  const headers: Record<string, string> = {}
  const token = getAuthToken()
  if (token) {
    headers.Authorization = `Bearer ${token}`
  }

  const res = await requestGetJson<PermissionMenuResponse>(
    `/newApi/api/admin/permission-users/${encodeURIComponent(String(uid))}/column-permissions`,
    {
      params: { menuType: 'app' },
      headers,
    },
  )

  if (!res.success) {
    throw new Error(res.error || res.message || '获取菜单权限失败')
  }

  const items = res.data || res.items || []
  try {
    window.localStorage.setItem(cacheKey, JSON.stringify(items))
  } catch (_error) {}

  return normalizeColumnKeys(items)
}