v3: added a chatbox

api/routes/chat.ts

@@ -0,0 +1,26 @@
+import { Router } from "@oak/oak";
+import type { APIResponse, ChatMessage } from "../model/interfaces.ts";
+import { authMiddleware } from "../middleware/auth.ts";
+import { getRecentChatMessages } from "../services/chat-service.ts";
+
+const router = new Router({ prefix: "/api/chat" });
+
+// GET /api/chat — recent messages (ascending). Optional `before` (ISO created_at)
+// cursor loads the page of older messages, and `limit` caps the page size.
+router.get("/", authMiddleware, (ctx) => {
+  const params = ctx.request.url.searchParams;
+  const before = params.get("before") ?? undefined;
+  const limitParam = params.get("limit");
+  const limit = limitParam ? Number(limitParam) : undefined;
+  const messages = getRecentChatMessages(
+    Number.isFinite(limit) ? limit : undefined,
+    before,
+  );
+  const responseBody: APIResponse<ChatMessage[]> = {
+    success: true,
+    data: messages,
+  };
+  ctx.response.body = responseBody;
+});
+
+export default router;