/** 品牌数据库(不符合ASIN)列表模型（任务 68）：解析 InvalidAsinDataPageVo(camel)，纯逻辑。 */
import { unwrap } from '../../api/envelope.ts'
import { ASIN_PAGE_DEFAULT_SIZE } from '../asin/asin-filter.ts'

export type InvalidAsinSource = 'MANUAL' | 'AUTO'

export interface InvalidAsinItem {
  id: number
  dataValue: string
  brand: string
  groupId: number | null
  groupName: string
  recordSource: string
  createdAt?: string
}

export interface InvalidAsinPageResult {
  items: InvalidAsinItem[]
  total: number
  page: number
  pageSize: number
}

export function emptyInvalidAsinPage(): InvalidAsinPageResult {
  return { items: [], total: 0, page: 1, pageSize: ASIN_PAGE_DEFAULT_SIZE }
}

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
}

/** 来源展示标签：MANUAL 手动新增，其余(含空)自动导入。 */
export function recordSourceLabel(source: string | null | undefined): string {
  return (source || '').trim().toUpperCase() === 'MANUAL' ? '手动新增' : '自动导入'
}

/** 解析单条品牌数据库项；缺 id 视为无效。 */
export function toInvalidAsinItem(raw: unknown): InvalidAsinItem | 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: InvalidAsinItem = {
    id,
    dataValue: text(record.dataValue ?? record.data_value),
    brand: text(record.brand),
    groupId: numberOrNull(record.groupId ?? record.group_id),
    groupName: text(record.groupName ?? record.group_name),
    recordSource: (text(record.recordSource ?? record.record_source)).toUpperCase(),
  }
  const createdAt = text(record.createdAt ?? record.created_at)
  if (createdAt) item.createdAt = createdAt
  return item
}

/** 归一化分页负载（信封或已解包 VO）为前端结果。 */
export function parseInvalidAsinPage(payload: unknown): InvalidAsinPageResult {
  const out = emptyInvalidAsinPage()
  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) => toInvalidAsinItem(raw))
      .filter((item): item is InvalidAsinItem => 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
}