refactor: simplify API routes and add sniffer status functionality

- Updated API routes to remove redundant prefixes.
- Introduced sniffer status fetching in the backend API.
- Added Sniffing page and integrated it into the routing.
- Created a new hook for backend API interactions.
- Implemented sniffer status type definitions.

frontend/src/Layout/Sidebar.tsx

@@ -1,5 +1,5 @@
 // src/components/Sidebar.tsx
-import { ApartmentOutlined, HomeOutlined, InfoCircleOutlined, SettingOutlined } from '@ant-design/icons';
+import { ApartmentOutlined, ApiOutlined, HomeOutlined, InfoCircleOutlined, SettingOutlined } from '@ant-design/icons';
 import { Layout, Menu } from 'antd';
 import React from 'react';
 import { useLocation, useNavigate } from 'react-router-dom';
@@ -11,6 +11,7 @@ const { Sider } = Layout;
 const menuItems = [
   { key: PATHS.HOME, icon: <HomeOutlined style={{ fontSize: '18px' }} />, label: 'Home' },
   { key: PATHS.NETWORK, icon: <ApartmentOutlined style={{ fontSize: '18px' }} />, label: 'Network' },
+  { key: PATHS.SNIFFING, icon: <ApiOutlined style={{ fontSize: '18px' }} />, label: 'Sniffing' },
   { key: '/about', icon: <InfoCircleOutlined style={{ fontSize: '18px' }} />, label: 'About' },
   { key: '/settings', icon: <SettingOutlined style={{ fontSize: '18px' }} />, label: 'Settings' },
 ];

frontend/src/api/apiClient.ts

@@ -1,13 +1,14 @@
 // src/apiClient.ts
 import axios from "axios";
 import {
-    BridgeCreateRequest,
-    BridgeInfo,
-    BridgeRemoveRequest,
-    FullState,
-    InterfaceInfo,
-    RouteInfo,
+  BridgeCreateRequest,
+  BridgeInfo,
+  BridgeRemoveRequest,
+  FullState,
+  InterfaceInfo,
+  RouteInfo,
 } from "../types/network";
+import { SnifferStatusResponse } from "../types/sniffer";
 
 const BASE = "http://mitm.lan/api";
 
@@ -17,7 +18,7 @@ export const api = axios.create({
   timeout: 10000,
 });
 
-// 🔹 Normalize FastAPI errors here
+// Normalize FastAPI errors here
 api.interceptors.response.use(
   (response) => response,
   (error) => {
@@ -59,6 +60,12 @@ export const fetchFullState = async (): Promise<FullState> => {
   return res.data;
 };
 
+export const fetchSnifferStatus = async (): Promise<SnifferStatusResponse> => {
+  const res = await api.get<SnifferStatusResponse>("/sniffer/status");
+  return res.data;
+};
+
+
 // Mutations
 export const createBridge = async (req: BridgeCreateRequest) => {
   const res = await api.post("network/bridge/create", req);

frontend/src/appRouter.tsx

@@ -3,6 +3,7 @@ import { Navigate, Route, Routes } from 'react-router-dom';
 import App from './App'; // your layout component (has <Outlet />)
 import Home from './pages/Home';
 import Network from './pages/Network';
+import Sniffing from './pages/Sniffing';
 import { PATHS } from './routes';
 
 export default function AppRouter() {
@@ -16,6 +17,7 @@ export default function AppRouter() {
         {/* Child routes - these render inside App's <Outlet /> */}
         <Route path={PATHS.HOME.slice(1)} element={<Home />} />
         <Route path={PATHS.NETWORK.slice(1)} element={<Network />} />
+        <Route path={PATHS.SNIFFING.slice(1)} element={<Sniffing />} />
 
         {/* Fallback (renders inside layout too) */}
         <Route path="*" element={<NotFound />} />

frontend/src/hooks/useBackendAPI.ts

@@ -3,13 +3,14 @@ import { useQuery, useQueryClient } from "@tanstack/react-query";
 import { useCallback, useState } from "react";
 import * as api from "../api/apiClient";
 import type {
-    BridgeCreateRequest,
-    BridgeInfo,
-    BridgeRemoveRequest,
-    FullState,
-    InterfaceInfo,
-    RouteInfo,
+  BridgeCreateRequest,
+  BridgeInfo,
+  BridgeRemoveRequest,
+  FullState,
+  InterfaceInfo,
+  RouteInfo,
 } from "../types/network";
+import { SnifferStatusResponse } from "../types/sniffer";
 
 /**
  * useNetwork
@@ -22,7 +23,7 @@ import type {
  *
  * This gives "no initial auto-fetch" but "once fetched, auto-updates".
  */
-export function useNetwork() {
+export function useBackendAPI() {
   const qc = useQueryClient();
 
   // per-query enabled flags (start false => no automatic fetch)
@@ -74,6 +75,13 @@ export function useNetwork() {
     ...commonOptions,
   });
 
+  const snifferStatusQuery = useQuery<SnifferStatusResponse>({
+    queryKey: ["sniffer-status"],
+    queryFn: api.fetchSnifferStatus,
+    enabled: fullStateEnabled,
+    ...commonOptions,
+  });
+
   // Imperative fetch helpers that also enable auto-refetch behavior
   const fetchInterfaces = useCallback(async () => {
     const res = await qc.fetchQuery<InterfaceInfo[]>({
@@ -125,6 +133,16 @@ export function useNetwork() {
     return res;
   }, [qc]);
 
+  const fetchSnifferStatus = useCallback(async () => {
+    const res = await qc.fetchQuery<SnifferStatusResponse>({
+      queryKey: ["sniffer-status"],
+      queryFn: api.fetchSnifferStatus,
+      staleTime: 1000 * 5
+    });
+    setFullStateEnabled(true);
+    return res;
+  }, [qc]);
+
   // Local loading state for simple UI feedback
   const [isCreating, setIsCreating] = useState(false);
   const [isRemoving, setIsRemoving] = useState(false);
@@ -154,6 +172,7 @@ export function useNetwork() {
       await qc.invalidateQueries({ queryKey: ["bridges"] });
       await qc.invalidateQueries({ queryKey: ["full-state"] });
       await qc.invalidateQueries({ queryKey: ["interfaces"] });
+      await qc.invalidateQueries({ queryKey: ["sniffer-status"] });
     } catch (err) {
       const message =
         err instanceof Error ? err.message : typeof err === "string" ? err : "Remove bridge failed";
@@ -184,6 +203,10 @@ export function useNetwork() {
     return qc.invalidateQueries({ queryKey: ["full-state"] });
   }
 
+  function refreshSnifferStatus() {
+    return qc.invalidateQueries({ queryKey: ["sniffer-status"] });
+  }
+
   // Convenience: refresh all queries
   function refreshAll() {
     refreshInterfaces();
@@ -191,6 +214,7 @@ export function useNetwork() {
     refreshRoutes();
     refreshBridges();
     refreshFullState();
+    refreshSnifferStatus();
   }
 
   return {
@@ -200,6 +224,7 @@ export function useNetwork() {
     routesQuery,
     bridgesQuery,
     fullStateQuery,
+    snifferStatusQuery,
 
     // manual fetchers (fetch+enable auto-updates)
     fetchInterfaces,
@@ -207,6 +232,7 @@ export function useNetwork() {
     fetchRoutes,
     fetchBridges,
     fetchFullState,
+    fetchSnifferStatus,
 
     // simple mutation functions (imperative)
     createBridge,
@@ -222,6 +248,9 @@ export function useNetwork() {
     refreshRoutes,
     refreshBridges,
     refreshFullState,
+    refreshSnifferStatus,
+
+    // refresh all
     refreshAll,
   };
 }

frontend/src/pages/Home.tsx

@@ -1,9 +1,9 @@
 import { useEffect } from 'react';
 import { fetchFullState } from '../api/apiClient';
-import { useNetwork } from '../hooks/useNetwork';
+import { useBackendAPI } from '../hooks/useBackendAPI';
 
 export default function Home() {
-  const { fullStateQuery } = useNetwork();
+  const { fullStateQuery } = useBackendAPI();
   const { data, isLoading, isError, error } = fullStateQuery;
 
   if (isLoading) return <div>Loading full state…</div>;

frontend/src/pages/Network.tsx

@@ -3,7 +3,7 @@ import { DeleteOutlined, PlusOutlined, ReloadOutlined } from '@ant-design/icons'
 import { Button, Col, Form, Input, message, Modal, Popconfirm, Row, Select, Space, Table, Tag, Typography } from 'antd';
 import type { ColumnsType } from 'antd/es/table';
 import { useEffect, useMemo, useState } from 'react';
-import { useNetwork } from '../hooks/useNetwork';
+import { useBackendAPI } from '../hooks/useBackendAPI';
 import type { BridgeInfo, InterfaceInfo } from '../types/network';
 
 const { Title, Paragraph } = Typography;
@@ -20,7 +20,7 @@ export default function Network() {
     refreshInterfaces,
     isCreating,
     isRemoving,
-  } = useNetwork();
+  } = useBackendAPI();
 
   const [bridgeModalVisible, setBridgeModalVisible] = useState(false);
   const [bridgeForm] = Form.useForm();

frontend/src/pages/Sniffing.tsx

@@ -0,0 +1,32 @@
+import { useEffect } from 'react';
+import { useBackendAPI } from '../hooks/useBackendAPI';
+import { fetchSnifferStatus } from '../api/apiClient';
+
+export default function Sniffing() {
+  const {
+    interfacesQuery,
+    bridgesQuery,
+    createBridge,
+    removeBridge,
+    fetchBridges,
+    fetchInterfaces,
+    refreshBridges,
+    refreshInterfaces,
+    isCreating,
+    isRemoving,
+  } = useBackendAPI();
+
+  // fetch on mount (explicit, since queries are disabled by default)
+  useEffect(() => {
+    fetchInterfaces().catch(() => {});
+    fetchSnifferStatus().catch(() => {});
+  }, []);
+
+  const bridges = bridgesQuery.data ?? [];
+  const snifferStatus = 
+  return (
+    <div className="sniffing-body">
+      <h1>Sniffing</h1>
+    </div>
+  );
+}

frontend/src/routes.ts

@@ -2,4 +2,5 @@ export const PATHS = {
   ROOT: '/',
   HOME: '/home',
   NETWORK: '/network',
+  SNIFFING: '/sniffing',
 };

frontend/src/types/sniffer.ts

@@ -0,0 +1,21 @@
+/**
+ * Status of an individual interface monitored by the AF_PACKET sniffer.
+ */
+export interface InterfaceSnifferStatus {
+  /** Whether the sniffer thread is active */
+  running: boolean;
+
+  /** Whether the interface exists in /sys/class/net */
+  exists: boolean;
+
+  /** Whether the interface is operationally UP */
+  up: boolean;
+}
+
+/**
+ * Response model for the sniffer status endpoint.
+ * Maps interface names to their sniffer status.
+ */
+export interface SnifferStatusResponse {
+  interfaces: Record<string, InterfaceSnifferStatus>;
+}