adding chat features, admin features and bug fixes

backend/src/services/bookstack.service.ts

@@ -151,4 +151,59 @@ async function searchPages(query: string): Promise<BookStackSearchResult[]> {
   }
 }
 
-export default { getRecentPages, searchPages };
+export interface BookStackPageDetail {
+  id: number;
+  name: string;
+  slug: string;
+  book_id: number;
+  book_slug: string;
+  chapter_id: number;
+  html: string;
+  created_at: string;
+  updated_at: string;
+  url: string;
+  book?: { name: string };
+  createdBy?: { name: string };
+  updatedBy?: { name: string };
+}
+
+async function getPageById(id: number): Promise<BookStackPageDetail> {
+  const { bookstack } = environment;
+  if (!bookstack.url || !isValidServiceUrl(bookstack.url)) {
+    throw new Error('BOOKSTACK_URL is not configured or is not a valid service URL');
+  }
+
+  try {
+    const response = await axios.get(
+      `${bookstack.url}/api/pages/${id}`,
+      { headers: buildHeaders() },
+    );
+    const page = response.data;
+    return {
+      id: page.id,
+      name: page.name,
+      slug: page.slug,
+      book_id: page.book_id,
+      book_slug: page.book_slug ?? '',
+      chapter_id: page.chapter_id ?? 0,
+      html: page.html ?? '',
+      created_at: page.created_at,
+      updated_at: page.updated_at,
+      url: `${bookstack.url}/books/${page.book_slug}/page/${page.slug}`,
+      book: page.book,
+      createdBy: page.created_by,
+      updatedBy: page.updated_by,
+    };
+  } catch (error) {
+    if (axios.isAxiosError(error)) {
+      logger.error('BookStack getPageById failed', {
+        status: error.response?.status,
+        statusText: error.response?.statusText,
+      });
+    }
+    logger.error('BookStackService.getPageById failed', { error });
+    throw new Error('Failed to fetch BookStack page');
+  }
+}
+
+export default { getRecentPages, searchPages, getPageById };