add search, chat, and feedback analytics with dashboard

app/api/feedback/page/route.ts

@@ -0,0 +1,24 @@
+import { source } from '@/lib/source';
+import { parseId, parseVote, recordPageVote } from '@/lib/analytics/api';
+import { json, readFeedback, storageError } from '@/lib/analytics/http';
+
+/** `{ page: '/some/path', vote: 1 | -1 | 0, visitorId }`; `0` removes the vote */
+export async function POST(req: Request) {
+  const body = await readFeedback(req);
+  if (body instanceof Response) return body;
+
+  const visitorId = parseId(body.visitorId);
+  const vote = parseVote(body.vote);
+  const page = typeof body.page === 'string' ? body.page : '';
+  const slugs = page.split('/').filter(Boolean);
+  if (!visitorId || vote === null || !page.startsWith('/') || !source.getPage(slugs)) {
+    return json(400, { error: 'Invalid feedback.' });
+  }
+
+  try {
+    await recordPageVote(source.getPage(slugs)!.url, visitorId, vote);
+  } catch (e) {
+    return storageError('page vote', e);
+  }
+  return json(200, { ok: true });
+}