/** 查询 ASIN 导出 URL 构建：按当前筛选下发 group_id/shop_name/asin/country（对齐 Java export @RequestParam snake_case）。 */
import { normalizeQueryAsinCountry, type QueryAsinFilterState } from './query-asin-filter.ts'

export const QUERY_ASIN_EXPORT_ENDPOINT = '/api/admin/query-asins/export'

/** 按导出可用筛选(分组/店铺名/ASIN/国家)构建查询串；空白/非法条件不下发，避免导出范围被误解。 */
export function buildQueryAsinExportQuery(state: QueryAsinFilterState): string {
  const params = new URLSearchParams()
  const groupId = state.groupId
  if (typeof groupId === 'number' && groupId >= 1) params.set('group_id', String(Math.floor(groupId)))
  const shopName = (state.shopName || '').trim()
  if (shopName) params.set('shop_name', shopName)
  const asin = (state.asin || '').trim()
  if (asin) params.set('asin', asin)
  const country = normalizeQueryAsinCountry(state.country)
  if (country) params.set('country', country)
  return params.toString()
}

/** 导出下载地址：浏览器直接访问该 URL 触发流式下载；无筛选时为全量导出。 */
export function toQueryAsinExportUrl(state: QueryAsinFilterState): string {
  const query = buildQueryAsinExportQuery(state)
  return query ? `${QUERY_ASIN_EXPORT_ENDPOINT}?${query}` : QUERY_ASIN_EXPORT_ENDPOINT
}