clean

more

backend/app.js

@@ -10,7 +10,7 @@ app.use(express.json());
 app.use('/v1/notes', router);
 
 app.use((req, res) => {
-   res.status(404).json({ error: `Requested path is invalid or does not exist: ${req.method} ${req.originalUrl}` });
- });
+  res.status(404).json({ error: `Requested path is invalid or does not exist: ${req.method} ${req.originalUrl}` });
+});
 
 export default app;

backend/routes/notes.routes.js

@@ -3,7 +3,7 @@ import { readFile } from 'fs/promises';
 import { clusterNotes } from '../services/clustering.service.js';
 
 const router = Router();
-const DATA_PATH = '../data/notes.json'
+const DATA_PATH = '../data/notes.json';
 
 const loadNotes = async () => {
   const raw = await readFile(DATA_PATH, 'utf-8');
@@ -15,7 +15,7 @@ router.get('/', async (req, res) => {
     const notes = await loadNotes();
     res.json(notes);
   } catch (err) {
-    console.error(`Error loading notes: ${err}`)
+    console.error(`Error loading notes: ${err}`);
     res.status(500).json({ error: 'Failed to load notes' });
   }
 });
@@ -26,7 +26,7 @@ router.post('/cluster', async (req, res) => {
     const clusters = await clusterNotes(notes);
     res.json(clusters);
   } catch (err) {
-    console.error(`Clustering failed: ${err}` )
+    console.error(`Clustering failed: ${err}`);
     res.status(500).json({ error: `Clustering failed: ${err}` });
   }
 });

backend/services/clustering.service.js

@@ -40,6 +40,15 @@ export const clusterNotes = async (notes) => {
    ],
   });
 
-  const raw = response.content[0].text;
-  return JSON.parse(raw);
+  const textBlock = response?.content?.[0];
+  
+  if (!textBlock || textBlock.type !== 'text' || typeof textBlock.text !== 'string') {
+    throw new Error('Unexpected response from LLM API: no text content returned');
+  }
+
+  try {
+    return JSON.parse(textBlock.text);
+  } catch {
+    throw new Error('LLM API returned non-JSON response');
+  }
 };

backend/tests/Clustering.service.test.js

@@ -35,7 +35,7 @@ describe('clusterNotes service', () => {
 
   it('should call Anthropic messages.create with the correct model', async () => {
     createMock.mockResolvedValue({
-      content: [{ text: JSON.stringify(MOCK_CLUSTERS) }],
+      content: [{ type: 'text', text: JSON.stringify(MOCK_CLUSTERS) }],
     });
 
     await clusterNotes(MOCK_NOTES);
@@ -48,7 +48,7 @@ describe('clusterNotes service', () => {
 
   it('should include all note texts in prompt sent to the LLM API', async () => {
     createMock.mockResolvedValue({
-      content: [{ text: JSON.stringify(MOCK_CLUSTERS) }],
+      content: [{ type: 'text', text: JSON.stringify(MOCK_CLUSTERS) }],
     });
 
     await clusterNotes(MOCK_NOTES);
@@ -62,7 +62,7 @@ describe('clusterNotes service', () => {
 
   it('should parse and return the clustered JSON from the API response', async () => {
     createMock.mockResolvedValue({
-      content: [{ text: JSON.stringify(MOCK_CLUSTERS) }],
+      content: [{ type: 'text', text: JSON.stringify(MOCK_CLUSTERS) }],
     });
 
     const result = await clusterNotes(MOCK_NOTES);
@@ -72,10 +72,16 @@ describe('clusterNotes service', () => {
 
   it('should throw error when the API returns non-JSON', async () => {
     createMock.mockResolvedValue({
-      content: [{ text: 'An unknown error occured when generting structured response.' }],
+      content: [{ type: 'text', text: 'An unknown error occured when generting structured response.' }],
     });
 
-    await expect(clusterNotes(MOCK_NOTES)).rejects.toThrow();
+    await expect(clusterNotes(MOCK_NOTES)).rejects.toThrow('non-JSON response');
+  });
+
+  it('should throw error when the API response has no text content', async () => {
+    createMock.mockResolvedValue({ content: [] });
+
+    await expect(clusterNotes(MOCK_NOTES)).rejects.toThrow('no text content returned');
   });
 
   it('should throw error when Anthropic API authentication fails', async () => {