Add paged chat history loading

src/server/sessiond/sessionProxyRoutes.ts

@@ -2,15 +2,17 @@ import type { FastifyInstance, FastifyReply } from "fastify";
 import { WebSocket, type RawData } from "ws";
 import { SessionDaemonClient } from "./sessionDaemonClient.js";
 
-export async function registerSessionProxyRoutes(app: FastifyInstance, daemon = new SessionDaemonClient()): Promise<void> {
+export function registerSessionProxyRoutes(app: FastifyInstance, daemon = new SessionDaemonClient()): void {
   const proxy = async (request: { method: string; url: string; body?: unknown }, reply: FastifyReply) => {
     try {
       const upstream = await daemon.request(request.method, stripApiPrefix(request.url), request.body);
       reply.code(upstream.statusCode);
-      if (upstream.headers["content-type"]) reply.header("content-type", upstream.headers["content-type"]);
-      return upstream.body ? JSON.parse(upstream.body) : undefined;
+      const contentType = upstream.headers["content-type"];
+      if (contentType !== undefined && contentType !== "") reply.header("content-type", contentType);
+      return upstream.body !== "" ? parseJson(upstream.body) : undefined;
     } catch (error) {
       requestFailed(reply, error);
+      return undefined;
     }
   };
 
@@ -36,22 +38,30 @@ export async function registerSessionProxyRoutes(app: FastifyInstance, daemon =
 }
 
 function stripApiPrefix(url: string): string {
-  return url.startsWith("/api") ? url.slice(4) || "/" : url;
+  const stripped = url.startsWith("/api") ? url.slice(4) : url;
+  return stripped === "" ? "/" : stripped;
 }
 
-function requestFailed(reply: FastifyReply, error: unknown) {
+function parseJson(text: string): unknown {
+  const value: unknown = JSON.parse(text);
+  return value;
+}
+
+function requestFailed(reply: FastifyReply, error: unknown): void {
   reply.code(502).send({ error: `Session daemon unavailable: ${error instanceof Error ? error.message : String(error)}` });
 }
 
 function bridgeSockets(client: WebSocket, upstream: WebSocket): void {
-  client.on("message", (data) => sendIfOpen(upstream, data));
-  upstream.on("message", (data) => sendIfOpen(client, data));
-  client.on("close", () => upstream.close());
-  upstream.on("close", () => client.close());
-  upstream.on("error", () => client.close());
-  client.on("error", () => upstream.close());
+  client.on("message", (data) => { sendIfOpen(upstream, data); });
+  upstream.on("message", (data) => { sendIfOpen(client, data); });
+  client.on("close", () => { upstream.close(); });
+  upstream.on("close", () => { client.close(); });
+  upstream.on("error", () => { client.close(); });
+  client.on("error", () => { upstream.close(); });
 }
 
 function sendIfOpen(socket: WebSocket, data: RawData): void {
-  if (socket.readyState === WebSocket.OPEN) socket.send(data);
+  if (socket.readyState === WebSocket.OPEN) {
+    socket.send(data);
+  }
 }