add new chat page

surfsense_web/app/api/chat/route.ts

@@ -0,0 +1,74 @@
+import type { UIMessage } from "ai";
+
+export const maxDuration = 30;
+
+export async function POST(req: Request) {
+	try {
+		const body = await req.json();
+		const {
+			messages,
+			chat_id,
+			search_space_id,
+		}: {
+			messages: UIMessage[];
+			chat_id?: number;
+			search_space_id?: number;
+		} = body;
+
+		// Get auth token from headers
+		const authHeader = req.headers.get("authorization");
+		if (!authHeader) {
+			return new Response("Unauthorized", { status: 401 });
+		}
+
+		// Get the last user message
+		const lastUserMessage = messages.filter((m) => m.role === "user").pop();
+
+		if (!lastUserMessage) {
+			return new Response("No user message found", { status: 400 });
+		}
+
+		// Extract text content from the message
+		const userQuery =
+			typeof lastUserMessage.content === "string"
+				? lastUserMessage.content
+				: lastUserMessage.content
+						.filter((c: any) => c.type === "text")
+						.map((c: any) => c.text)
+						.join(" ");
+
+		// Call the DeepAgent backend
+		const backendUrl = process.env.NEXT_PUBLIC_API_URL || "http://localhost:8000";
+		const response = await fetch(`${backendUrl}/api/v1/new_chat`, {
+			method: "POST",
+			headers: {
+				"Content-Type": "application/json",
+				Authorization: authHeader,
+			},
+			body: JSON.stringify({
+				chat_id: chat_id || 0,
+				user_query: userQuery,
+				search_space_id: search_space_id || 0,
+			}),
+		});
+
+		if (!response.ok) {
+			return new Response(`Backend error: ${response.statusText}`, {
+				status: response.status,
+			});
+		}
+
+		// The backend returns SSE stream with Vercel AI SDK Data Stream Protocol
+		// We need to forward this stream to the client
+		return new Response(response.body, {
+			headers: {
+				"Content-Type": "text/event-stream",
+				"Cache-Control": "no-cache",
+				Connection: "keep-alive",
+			},
+		});
+	} catch (error) {
+		console.error("Error in deep-agent-chat route:", error);
+		return new Response("Internal Server Error", { status: 500 });
+	}
+}