add search, chat, and feedback analytics with dashboard

app/api/feedback/message/route.ts

@@ -0,0 +1,20 @@
+import { parseId, parseVote, recordMessageVote } from '@/lib/analytics/api';
+import { json, readFeedback, storageError } from '@/lib/analytics/http';
+
+/** `{ messageId, vote: 1 | -1 | 0, visitorId }` for an assistant response */
+export async function POST(req: Request) {
+  const body = await readFeedback(req);
+  if (body instanceof Response) return body;
+
+  const messageId = parseId(body.messageId);
+  const vote = parseVote(body.vote);
+  if (!messageId || vote === null) return json(400, { error: 'Invalid feedback.' });
+
+  try {
+    const found = await recordMessageVote(messageId, parseId(body.visitorId), vote);
+    if (!found) return json(404, { error: 'Unknown message.' });
+  } catch (e) {
+    return storageError('message vote', e);
+  }
+  return json(200, { ok: true });
+}