/** 店铺数据任务列表模型（任务 110）：解析按店铺分组的任务列表与结果文件行，纯逻辑。 */
import { unwrap } from '../../api/envelope.ts'
import { SHOP_DATA_DEFAULT_PAGE_SIZE } from './shop-data-filter.ts'
import { normalizeTaskStatus, type ResultId, type TaskId, type TaskStatus } from './task-model.ts'

export interface ShopDataResultRow {
  taskId?: TaskId
  taskNo: string
  resultId: ResultId
  username: string
  shopName: string
  shopId: string
  groupName: string
  status: TaskStatus
  success?: boolean | null
  error: string
  countryCodes: string[]
  filename: string
  fileUrl: string
  fileReady: boolean
  fileStatus: string
  fileError: string
  fileSize?: number
  rowCount?: number
  createdAt?: string
  updatedAt?: string
  finishedAt?: string
}

export interface ShopDataTaskGroup {
  shopName: string
  shopId: string
  groupName: string
  latestCreatedAt?: string
  results: ShopDataResultRow[]
}

export interface ShopDataTaskPageResult {
  items: ShopDataTaskGroup[]
  total: number
  page: number
  pageSize: number
}

export function emptyShopDataTaskPage(): ShopDataTaskPageResult {
  return { items: [], total: 0, page: 1, pageSize: SHOP_DATA_DEFAULT_PAGE_SIZE }
}

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

function positiveNumber(value: unknown): number | undefined {
  return typeof value === 'number' && Number.isFinite(value) && value >= 0 ? Math.floor(value) : undefined
}

/** 解析单条结果文件行；缺有效 result_id 视为无效。 */
export function toShopDataResultRow(raw: unknown): ShopDataResultRow | null {
  if (!raw || typeof raw !== 'object') return null
  const r = raw as Record<string, unknown>
  const rawResultId = r.result_id
  const resultId = (
    typeof rawResultId === 'number' && Number.isFinite(rawResultId) && rawResultId >= 1
      ? String(Math.floor(rawResultId))
      : text(rawResultId)
  ) as ResultId
  if (!resultId) return null
  const codesRaw = r.country_codes ?? r.countryCodes
  const countryCodes = Array.isArray(codesRaw)
    ? (codesRaw as unknown[]).map((code) => text(code)).filter(Boolean)
    : []
  const row: ShopDataResultRow = {
    resultId,
    taskNo: text(r.task_no ?? r.taskNo),
    username: text(r.username),
    shopName: text(r.shop_name ?? r.shopName),
    shopId: text(r.shop_id ?? r.shopId),
    groupName: text(r.group_name ?? r.groupName),
    status: normalizeTaskStatus(r.status),
    error: text(r.error),
    countryCodes,
    filename: text(r.output_filename ?? r.result_filename ?? r.filename),
    fileUrl: text(r.result_file_url ?? r.file_url ?? r.fileUrl),
    fileReady: r.file_ready === true || r.fileReady === true,
    fileStatus: text(r.file_status ?? r.fileStatus),
    fileError: text(r.file_error ?? r.fileError),
  }
  const taskId = text(r.task_id)
  if (taskId) row.taskId = taskId as TaskId
  if (typeof r.success === 'boolean' || r.success === null) row.success = r.success as boolean | null
  const fileSize = positiveNumber(r.file_size ?? r.fileSize)
  if (fileSize !== undefined) row.fileSize = fileSize
  const rowCount = positiveNumber(r.row_count ?? r.rowCount)
  if (rowCount !== undefined) row.rowCount = rowCount
  const createdAt = text(r.created_at ?? r.createdAt)
  if (createdAt) row.createdAt = createdAt
  const updatedAt = text(r.updated_at ?? r.updatedAt)
  if (updatedAt) row.updatedAt = updatedAt
  const finishedAt = text(r.finished_at ?? r.finishedAt)
  if (finishedAt) row.finishedAt = finishedAt
  return row
}

/** 解析单店铺任务组；results 默认空数组。 */
export function toShopDataTaskGroup(raw: unknown): ShopDataTaskGroup | null {
  if (!raw || typeof raw !== 'object') return null
  const r = raw as Record<string, unknown>
  const group: ShopDataTaskGroup = {
    shopName: text(r.shop_name ?? r.shopName) || '未命名',
    shopId: text(r.shop_id ?? r.shopId),
    groupName: text(r.group_name ?? r.groupName),
    results: Array.isArray(r.results)
      ? r.results.map((rawRow) => toShopDataResultRow(rawRow)).filter((row): row is ShopDataResultRow => row !== null)
      : [],
  }
  const latest = text(r.latest_created_at ?? r.latestCreatedAt)
  if (latest) group.latestCreatedAt = latest
  return group
}

/** 归一化店铺数据任务分页负载为前端结果；缺省字段回默认。 */
export function parseShopDataTaskPage(payload: unknown): ShopDataTaskPageResult {
  const out = emptyShopDataTaskPage()
  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) => toShopDataTaskGroup(raw))
      .filter((group): group is ShopDataTaskGroup => group !== 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.page_size ?? record.pageSize
  if (typeof rawSize === 'number' && rawSize >= 1) out.pageSize = Math.floor(rawSize)
  return out
}