1 files changed, 62 insertions, 0 deletions
diff --git a/app/src/lib/bookmark-storage.ts b/app/src/lib/bookmark-storage.ts
new file mode 100644
index 0000000..2c4f397
--- /dev/null
+++ b/app/src/lib/bookmark-storage.ts
@@ -0,0 +1,62 @@
+import { TwitterBookmark, ProcessedBookmark, BookmarkSyncStatus } from './bookmark-models';
+
+export class BookmarkStorageService {
+  private static readonly STORAGE_KEYS = {
+    BOOKMARKS: 'twitter_bookmarks',
+    PROCESSED_BOOKMARKS: 'processed_bookmarks',
+    SYNC_STATUS: 'sync_status',
+  };
+
+  static saveBookmarks(bookmarks: TwitterBookmark[]): void {
+    if (typeof window === 'undefined') return;
+    
+    const existing = this.getBookmarks();
+    const newBookmarks = bookmarks.filter(
+      (newBookmark) => !existing.some((existing) => existing.id === newBookmark.id)
+    );
+    
+    const allBookmarks = [...existing, ...newBookmarks];
+    localStorage.setItem(this.STORAGE_KEYS.BOOKMARKS, JSON.stringify(allBookmarks));
+  }
+
+  static getBookmarks(): TwitterBookmark[] {
+    if (typeof window === 'undefined') return [];
+    const data = localStorage.getItem(this.STORAGE_KEYS.BOOKMARKS);
+    return data ? JSON.parse(data) : [];
+  }
+
+  static getBookmarkById(id: string): TwitterBookmark | null {
+    if (typeof window === 'undefined') return null;
+    const bookmarks = this.getBookmarks();
+    return bookmarks.find((bookmark) => bookmark.id === id) || null;
+  }
+
+  static clearAll(): void {
+    if (typeof window === 'undefined') return;
+    localStorage.removeItem(this.STORAGE_KEYS.BOOKMARKS);
+    localStorage.removeItem(this.STORAGE_KEYS.PROCESSED_BOOKMARKS);
+    localStorage.removeItem(this.STORAGE_KEYS.SYNC_STATUS);
+  }
+
+  static exportBookmarks(): string {
+    if (typeof window === 'undefined') return '';
+    const bookmarks = this.getBookmarks();
+    const data = {
+      bookmarks,
+      exportedAt: new Date().toISOString(),
+    };
+    return JSON.stringify(data, null, 2);
+  }
+
+  static importBookmarks(jsonData: string): void {
+    if (typeof window === 'undefined') return;
+    try {
+      const data = JSON.parse(jsonData);
+      if (data.bookmarks) {
+        localStorage.setItem(this.STORAGE_KEYS.BOOKMARKS, JSON.stringify(data.bookmarks));
+      }
+    } catch (error) {
+      throw new Error('Invalid bookmark data format');
+    }
+  }
+}
+\ No newline at end of file