/** 店铺列表加载模型（任务 88）：解析 ShopManagePageVo(camel) 店铺行，纯逻辑。 */
import { unwrap } from '../../api/envelope.ts'
import { emptyShopPageResult, type ShopPageResult, type ShopSummary } from './shop-dto.ts'

function text(value: unknown): string {
  return typeof value === 'string' ? value.trim() : ''
}

function numberOrNull(value: unknown): number | null {
  return typeof value === 'number' && Number.isFinite(value) ? Math.floor(value) : null
}

/** 解析单条店铺行；缺 id 视为无效；密码只保留掩码、不落明文字段。 */
export function toShopSummary(raw: unknown): ShopSummary | null {
  if (!raw || typeof raw !== 'object') return null
  const record = raw as Record<string, unknown>
  const id = numberOrNull(record.id)
  if (id === null) return null
  const item: ShopSummary = {
    id,
    groupId: numberOrNull(record.groupId ?? record.group_id),
    groupName: text(record.groupName ?? record.group_name),
    shopName: text(record.shopName ?? record.shop_name),
    mallName: text(record.mallName ?? record.mall_name),
    znUsername: text(record.znUsername ?? record.zn_username),
    account: text(record.account),
  }
  const masked = text(record.passwordMasked ?? record.password_masked) || text(record.password)
  if (masked) item.passwordMasked = masked
  const createdAt = text(record.createdAt ?? record.created_at)
  if (createdAt) item.createdAt = createdAt
  const updatedAt = text(record.updatedAt ?? record.updated_at)
  if (updatedAt) item.updatedAt = updatedAt
  return item
}

/** 归一化店铺分页负载（信封或已解包 VO）为前端结果；缺省字段回默认。 */
export function parseShopManagePage(payload: unknown): ShopPageResult {
  const out = emptyShopPageResult()
  const core = unwrap<unknown>(payload)
  if (!core || typeof core !== 'object') return out
  const record = core as Record<string, unknown>
  if (Array.isArray(record.items)) {
    out.items = record.items
      .map((raw) => toShopSummary(raw))
      .filter((item): item is ShopSummary => item !== null)
  }
  if (typeof record.total === 'number') out.total = Math.floor(record.total)
  if (typeof record.page === 'number' && record.page >= 1) out.page = Math.floor(record.page)
  const rawSize = record.pageSize ?? record.page_size
  if (typeof rawSize === 'number' && rawSize >= 1) out.pageSize = Math.floor(rawSize)
  return out
}