chore: 导入清理前的完整工程状态（含 Capacitor 原生壳，作为回滚备份点）

2026-10-21 11:50:10 +08:00
commit 8ded87a3a8
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+import type { UserData, UserDataExportFile } from '~/utils/userData'
+import type { UserDataLocal } from '~/utils/userDataSync'
+import {
+  createEmptyUserData,
+  createUserDataExport,
+  mergeUserData,
+  parseUserDataExport,
+} from '~/utils/userData'
+import { favoriteEntries, setFavoriteEntries } from './favorite'
+import { recipeHistories } from './history'
+import { userDataMeta } from './userDataMeta'
+
+export function readLocalUserData(): UserData {
+  const meta = userDataMeta.value
+  return {
+    favorites: favoriteEntries.value,
+    favoriteRemovals: meta.favoriteRemovals ?? [],
+    histories: recipeHistories.value,
+    historyRemovals: meta.historyRemovals ?? [],
+    historyClearedAt: meta.historyClearedAt ?? 0,
+  }
+}
+
+export function writeLocalUserData(data: UserData): void {
+  setFavoriteEntries(data.favorites)
+  recipeHistories.value = data.histories
+  userDataMeta.value = {
+    ...userDataMeta.value,
+    favoriteRemovals: data.favoriteRemovals,
+    historyRemovals: data.historyRemovals,
+    historyClearedAt: data.historyClearedAt,
+  }
+}
+
+export const localUserData: UserDataLocal = {
+  read: readLocalUserData,
+  write: writeLocalUserData,
+  readLastUid: () => userDataMeta.value.lastUid ?? '',
+  writeLastUid: (uid) => {
+    if (userDataMeta.value.lastUid !== uid)
+      userDataMeta.value = { ...userDataMeta.value, lastUid: uid }
+  },
+}
+
+export function exportLocalUserData(now = Date.now()): UserDataExportFile {
+  return createUserDataExport(mergeUserData(readLocalUserData(), createEmptyUserData(), now), now)
+}
+
+/**
+ * Merge an exported file into local data, using the same rules as cloud sync.
+ * Returns null when the text is not a Cook export.
+ */
+export function importLocalUserData(text: string, now = Date.now()): { favorites: number, histories: number } | null {
+  const imported = parseUserDataExport(text)
+  if (!imported)
+    return null
+  const merged = mergeUserData(readLocalUserData(), imported, now)
+  writeLocalUserData(merged)
+  return { favorites: merged.favorites.length, histories: merged.histories.length }
+}