/** 店铺明文凭据解析模型（任务 93）：凭证明文仅来自凭证端点且落 SensitiveString，
 * 与列表行(仅掩码)字段分离；纯逻辑。 */
import { unwrap } from '../../api/envelope.ts'
import { toSensitiveString, type ShopCredential } 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
}

/** 解析单条明文凭据；缺 id 或密码为空视为无效(拒绝把空当明文)。 */
export function toShopCredential(raw: unknown): ShopCredential | 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 password = text(record.password)
  if (!password) return null
  const credential: ShopCredential = {
    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),
    password: toSensitiveString(password),
  }
  return credential
}

/** 解包凭证端点负载(data 为 ShopManageCredentialVo)为明文凭据；无效时抛可操作错误。 */
export function parseShopCredential(payload: unknown): ShopCredential {
  const credential = toShopCredential(unwrap<unknown>(payload))
  if (!credential) {
    throw new Error('读取店铺凭证响应异常：未返回有效的明文凭据')
  }
  return credential
}