task-111(任务与重复分析中心): 实现店铺数据任务分页刷新

新增 shop-data-list-state.ts：店铺数据任务分页信息派生与可批量选择结果行 (result_id)展平，供后续批量下载复用。 TDD: task-111.test.ts 8 用例先 RED 后 GREEN。
2026-09-05 17:18:47 +08:00
parent cb1490ccc2
commit 137af44ae8
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+/** 店铺数据任务列表分页与选择派生（任务 111/112）：分页信息 + 可批量选择的结果行，纯逻辑。 */
+import { SHOP_DATA_DEFAULT_PAGE_SIZE, SHOP_DATA_MAX_PAGE_SIZE, SHOP_DATA_PAGE_MIN } from './shop-data-filter.ts'
+import type { ShopDataTaskGroup } from './shop-data-model.ts'
+
+export interface ShopDataPageInfo {
+  page: number
+  pageSize: number
+  total: number
+  totalPages: number
+  from: number
+  to: number
+  hasPrev: boolean
+  hasNext: boolean
+}
+
+function finiteInt(value: unknown): number | null {
+  return typeof value === 'number' && Number.isFinite(value) ? Math.floor(value) : null
+}
+
+/** 由总数与目标分页派生页码信息；空数据视为第 1 页。 */
+export function shopDataPageInfo(page: unknown, pageSize: unknown, total: unknown): ShopDataPageInfo {
+  const rawSize = finiteInt(pageSize)
+  const size =
+    rawSize === null || rawSize < 1
+      ? SHOP_DATA_DEFAULT_PAGE_SIZE
+      : Math.min(Math.max(rawSize, 10), SHOP_DATA_MAX_PAGE_SIZE)
+  const safeTotal = Math.max(finiteInt(total) ?? 0, 0)
+  const totalPages = safeTotal === 0 ? 1 : Math.max(1, Math.ceil(safeTotal / size))
+  const requested = Math.max(finiteInt(page) ?? SHOP_DATA_PAGE_MIN, SHOP_DATA_PAGE_MIN)
+  const safePage = Math.min(requested, totalPages)
+  const from = safeTotal === 0 ? 0 : (safePage - 1) * size + 1
+  const to = Math.min(safeTotal, safePage * size)
+  return {
+    page: safePage,
+    pageSize: size,
+    total: safeTotal,
+    totalPages,
+    from,
+    to,
+    hasPrev: safePage > 1,
+    hasNext: safePage < totalPages && safeTotal > 0,
+  }
+}
+
+/** 展平本页所有可选中的结果行(result_id)，供批量下载/勾选；缺行忽略。 */
+export function selectableResultRows(groups: readonly ShopDataTaskGroup[]): string[] {
+  const ids: string[] = []
+  for (const group of groups) {
+    for (const row of group.results) {
+      if (row.resultId) ids.push(row.resultId)
+    }
+  }
+  return ids
+}