Refactor auth and version checks for improved reliability.

- Prevent duplicate version checks in Vite dev mode
- Simplify protected route handling
- Add session flags for version tracking

lightrag_webui/src/App.tsx

@@ -1,13 +1,13 @@
-import { useState, useCallback } from 'react'
+import { useState, useCallback, useEffect, useRef } from 'react'
 import ThemeProvider from '@/components/ThemeProvider'
 import TabVisibilityProvider from '@/contexts/TabVisibilityProvider'
 import MessageAlert from '@/components/MessageAlert'
 import ApiKeyAlert from '@/components/ApiKeyAlert'
 import StatusIndicator from '@/components/graph/StatusIndicator'
 import { healthCheckInterval } from '@/lib/constants'
-import { useBackendState } from '@/stores/state'
+import { useBackendState, useAuthStore } from '@/stores/state'
 import { useSettingsStore } from '@/stores/settings'
-import { useEffect } from 'react'
+import { getAuthStatus } from '@/api/lightrag'
 import SiteHeader from '@/features/SiteHeader'
 import { InvalidApiKeyError, RequireApiKeError } from '@/api/lightrag'
 
@@ -23,17 +23,63 @@ function App() {
   const enableHealthCheck = useSettingsStore.use.enableHealthCheck()
   const currentTab = useSettingsStore.use.currentTab()
   const [apiKeyInvalid, setApiKeyInvalid] = useState(false)
+  const versionCheckRef = useRef(false); // Prevent duplicate calls in Vite dev mode
 
-  // Health check
+  // Health check - can be disabled
   useEffect(() => {
-    // Check immediately
-    useBackendState.getState().check()
+    // Only execute if health check is enabled
+    if (!enableHealthCheck) return;
+    
+    // Health check function
+    const performHealthCheck = async () => {
+      await useBackendState.getState().check();
+    };
+    
+    // Execute immediately
+    performHealthCheck();
+    
+    // Set interval for periodic execution
+    const interval = setInterval(performHealthCheck, healthCheckInterval * 1000);
+    return () => clearInterval(interval);
+  }, [enableHealthCheck]);
 
-    const interval = setInterval(async () => {
-      await useBackendState.getState().check()
-    }, healthCheckInterval * 1000)
-    return () => clearInterval(interval)
-  }, [enableHealthCheck])
+  // Version check - independent and executed only once
+  useEffect(() => {
+    const checkVersion = async () => {
+      // Prevent duplicate calls in Vite dev mode
+      if (versionCheckRef.current) return;
+      versionCheckRef.current = true;
+      
+      // Check if version info was already obtained in login page
+      const versionCheckedFromLogin = sessionStorage.getItem('VERSION_CHECKED_FROM_LOGIN') === 'true';
+      if (versionCheckedFromLogin) return;
+      
+      // Get version info
+      const token = localStorage.getItem('LIGHTRAG-API-TOKEN');
+      if (!token) return;
+      
+      try {
+        const status = await getAuthStatus();
+        if (status.core_version || status.api_version) {
+          // Update version info while maintaining login state
+          useAuthStore.getState().login(
+            token, 
+            useAuthStore.getState().isGuestMode, 
+            status.core_version, 
+            status.api_version
+          );
+          
+          // Set flag to indicate version info has been checked
+          sessionStorage.setItem('VERSION_CHECKED_FROM_LOGIN', 'true');
+        }
+      } catch (error) {
+        console.error('Failed to get version info:', error);
+      }
+    };
+    
+    // Execute version check
+    checkVersion();
+  }, []); // Empty dependency array ensures it only runs once on mount
 
   const handleTabChange = useCallback(
     (tab: string) => useSettingsStore.getState().setCurrentTab(tab as any),

lightrag_webui/src/AppRouter.tsx

@@ -2,98 +2,11 @@ import { HashRouter as Router, Routes, Route, useNavigate } from 'react-router-d
 import { useEffect, useState } from 'react'
 import { useAuthStore } from '@/stores/state'
 import { navigationService } from '@/services/navigation'
-import { getAuthStatus } from '@/api/lightrag'
-import { toast } from 'sonner'
 import { Toaster } from 'sonner'
 import App from './App'
 import LoginPage from '@/features/LoginPage'
 import ThemeProvider from '@/components/ThemeProvider'
 
-interface ProtectedRouteProps {
-  children: React.ReactNode
-}
-
-const ProtectedRoute = ({ children }: ProtectedRouteProps) => {
-  const { isAuthenticated } = useAuthStore()
-  const [isChecking, setIsChecking] = useState(true)
-  const navigate = useNavigate()
-
-  // Set navigate function for navigation service
-  useEffect(() => {
-    navigationService.setNavigate(navigate)
-  }, [navigate])
-
-  useEffect(() => {
-    let isMounted = true; // Flag to prevent state updates after unmount
-
-    // This effect will run when the component mounts
-    // and will check if authentication is required
-    const checkAuthStatus = async () => {
-      try {
-        // Skip check if already authenticated
-        if (isAuthenticated) {
-          if (isMounted) setIsChecking(false);
-          return;
-        }
-
-        const status = await getAuthStatus()
-
-        // Only proceed if component is still mounted
-        if (!isMounted) return;
-
-        if (!status.auth_configured && status.access_token) {
-          // If auth is not configured, use the guest token
-          useAuthStore.getState().login(status.access_token, true, status.core_version, status.api_version)
-          if (status.message) {
-            toast.info(status.message)
-          }
-        }
-      } catch (error) {
-        console.error('Failed to check auth status:', error)
-      } finally {
-        // Only update state if component is still mounted
-        if (isMounted) {
-          setIsChecking(false)
-        }
-      }
-    }
-
-    // Execute immediately
-    checkAuthStatus()
-
-    // Cleanup function to prevent state updates after unmount
-    return () => {
-      isMounted = false;
-    }
-  }, [isAuthenticated])
-
-  // Handle navigation when authentication status changes
-  useEffect(() => {
-    if (!isChecking && !isAuthenticated) {
-      const currentPath = window.location.hash.slice(1); // Remove the '#' from hash
-      const isLoginPage = currentPath === '/login';
-
-      if (!isLoginPage) {
-        // Use navigation service for redirection
-        console.log('Not authenticated, redirecting to login');
-        navigationService.navigateToLogin();
-      }
-    }
-  }, [isChecking, isAuthenticated]);
-
-  // Show nothing while checking auth status or when not authenticated on login page
-  if (isChecking || (!isAuthenticated && window.location.hash.slice(1) === '/login')) {
-    return null;
-  }
-
-  // Show children only when authenticated
-  if (!isAuthenticated) {
-    return null;
-  }
-
-  return <>{children}</>;
-}
-
 const AppContent = () => {
   const [initializing, setInitializing] = useState(true)
   const { isAuthenticated } = useAuthStore()
@@ -104,34 +17,20 @@ const AppContent = () => {
     navigationService.setNavigate(navigate)
   }, [navigate])
 
-  // Check token validity and auth configuration on app initialization
+  // Token validity check
   useEffect(() => {
-    let isMounted = true; // Flag to prevent state updates after unmount
+    let isMounted = true;
 
     const checkAuth = async () => {
       try {
         const token = localStorage.getItem('LIGHTRAG-API-TOKEN')
 
-        // If we have a token, we're already authenticated
         if (token && isAuthenticated) {
           if (isMounted) setInitializing(false);
           return;
         }
 
-        // If no token or not authenticated, check if auth is configured
-        const status = await getAuthStatus()
-
-        // Only proceed if component is still mounted
-        if (!isMounted) return;
-
-        if (!status.auth_configured && status.access_token) {
-          // If auth is not configured, use the guest token
-          useAuthStore.getState().login(status.access_token, true, status.core_version, status.api_version)
-          if (status.message) {
-            toast.info(status.message)
-          }
-        } else if (!token) {
-          // Only logout if we don't have a token
+        if (!token) {
           useAuthStore.getState().logout()
         }
       } catch (error) {
@@ -140,22 +39,30 @@ const AppContent = () => {
           useAuthStore.getState().logout()
         }
       } finally {
-        // Only update state if component is still mounted
         if (isMounted) {
           setInitializing(false)
         }
       }
     }
 
-    // Execute immediately
     checkAuth()
 
-    // Cleanup function to prevent state updates after unmount
     return () => {
       isMounted = false;
     }
   }, [isAuthenticated])
 
+  // Redirect effect for protected routes
+  useEffect(() => {
+    if (!initializing && !isAuthenticated) {
+      const currentPath = window.location.hash.slice(1);
+      if (currentPath !== '/login') {
+        console.log('Not authenticated, redirecting to login');
+        navigate('/login');
+      }
+    }
+  }, [initializing, isAuthenticated, navigate]);
+
   // Show nothing while initializing
   if (initializing) {
     return null
@@ -166,11 +73,7 @@ const AppContent = () => {
       <Route path="/login" element={<LoginPage />} />
       <Route
         path="/*"
-        element={
-          <ProtectedRoute>
-            <App />
-          </ProtectedRoute>
-        }
+        element={isAuthenticated ? <App /> : null}
       />
     </Routes>
   )

lightrag_webui/src/features/LoginPage.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from 'react'
+import { useState, useEffect, useRef } from 'react'
 import { useNavigate } from 'react-router-dom'
 import { useAuthStore } from '@/stores/state'
 import { loginToServer, getAuthStatus } from '@/api/lightrag'
@@ -18,6 +18,7 @@ const LoginPage = () => {
   const [username, setUsername] = useState('')
   const [password, setPassword] = useState('')
   const [checkingAuth, setCheckingAuth] = useState(true)
+  const authCheckRef = useRef(false); // Prevent duplicate calls in Vite dev mode
 
   useEffect(() => {
     console.log('LoginPage mounted')
@@ -28,6 +29,13 @@ const LoginPage = () => {
     let isMounted = true; // Flag to prevent state updates after unmount
 
     const checkAuthConfig = async () => {
+      // Prevent duplicate calls in Vite dev mode
+      if (authCheckRef.current) {
+        if (isMounted) setCheckingAuth(false);
+        return;
+      }
+      authCheckRef.current = true;
+      
       try {
         // If already authenticated, redirect to home
         if (isAuthenticated) {
@@ -37,6 +45,17 @@ const LoginPage = () => {
 
         // Check auth status
         const status = await getAuthStatus()
+        
+        // Set checkingAuth to false immediately after getAuthStatus
+        // This allows the login page to render while other processing continues
+        if (isMounted) {
+          setCheckingAuth(false);
+        }
+        
+        // Set session flag for version check to avoid duplicate checks in App component
+        if (isMounted && (status.core_version || status.api_version)) {
+          sessionStorage.setItem('VERSION_CHECKED_FROM_LOGIN', 'true');
+        }
 
         // Only proceed if component is still mounted
         if (!isMounted) return;
@@ -48,16 +67,16 @@ const LoginPage = () => {
             toast.info(status.message)
           }
           navigate('/')
-          return // Exit early, no need to set checkingAuth to false
+          return
         }
       } catch (error) {
         console.error('Failed to check auth configuration:', error)
-      } finally {
-        // Only update state if component is still mounted
+        // Also set checkingAuth to false in case of error
         if (isMounted) {
-          setCheckingAuth(false)
+          setCheckingAuth(false);
         }
       }
+      // Removed finally block as we're setting checkingAuth earlier
     }
 
     // Execute immediately
@@ -88,6 +107,11 @@ const LoginPage = () => {
       // Check authentication mode
       const isGuestMode = response.auth_mode === 'disabled'
       login(response.access_token, isGuestMode, response.core_version, response.api_version)
+      
+      // Set session flag for version check
+      if (response.core_version || response.api_version) {
+        sessionStorage.setItem('VERSION_CHECKED_FROM_LOGIN', 'true');
+      }
 
       if (isGuestMode) {
         // Show authentication disabled notification