Get user management page working, add permission checking in more places

inventory-server/auth/permissions.js

@@ -1,4 +1,19 @@
-const pool = global.pool;
+// Get pool from global or create a new one if not available
+let pool;
+if (typeof global.pool !== 'undefined') {
+  pool = global.pool;
+} else {
+  // If global pool is not available, create a new connection
+  const { Pool } = require('pg');
+  pool = new Pool({
+    host: process.env.DB_HOST,
+    user: process.env.DB_USER,
+    password: process.env.DB_PASSWORD,
+    database: process.env.DB_NAME,
+    port: process.env.DB_PORT,
+  });
+  console.log('Created new database pool in permissions.js');
+}
 
 /**
  * Check if a user has a specific permission

inventory-server/auth/routes.js

@@ -1,10 +1,26 @@
 const express = require('express');
 const router = express.Router();
-const pool = global.pool;
 const bcrypt = require('bcrypt');
 const jwt = require('jsonwebtoken');
 const { requirePermission, getUserPermissions } = require('./permissions');
 
+// Get pool from global or create a new one if not available
+let pool;
+if (typeof global.pool !== 'undefined') {
+  pool = global.pool;
+} else {
+  // If global pool is not available, create a new connection
+  const { Pool } = require('pg');
+  pool = new Pool({
+    host: process.env.DB_HOST,
+    user: process.env.DB_USER,
+    password: process.env.DB_PASSWORD,
+    database: process.env.DB_NAME,
+    port: process.env.DB_PORT,
+  });
+  console.log('Created new database pool in routes.js');
+}
+
 // Authentication middleware
 const authenticate = async (req, res, next) => {
   try {

inventory/src/App.tsx

@@ -1,4 +1,4 @@
-import { Routes, Route, useNavigate, Navigate } from 'react-router-dom';
+import { Routes, Route, useNavigate, Navigate, useLocation } from 'react-router-dom';
 import { MainLayout } from './components/layout/MainLayout';
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
 import { Products } from './pages/Products';
@@ -16,62 +16,81 @@ import { Vendors } from '@/pages/Vendors';
 import { Categories } from '@/pages/Categories';
 import { Import } from '@/pages/Import';
 import { AiValidationDebug } from "@/pages/AiValidationDebug"
+import { AuthProvider } from './contexts/AuthContext';
 
 const queryClient = new QueryClient();
 
 function App() {
   const navigate = useNavigate();
+  const location = useLocation();
 
   useEffect(() => {
     const checkAuth = async () => {
       const token = localStorage.getItem('token');
-      if (token) {
+      const isLoggedIn = sessionStorage.getItem('isLoggedIn') === 'true';
+      
+      // If we have a token but aren't logged in yet, verify the token
+      if (token && !isLoggedIn) {
         try {
           const response = await fetch(`${config.authUrl}/me`, {
             headers: {
               Authorization: `Bearer ${token}`,
             },
           });
+          
           if (!response.ok) {
             localStorage.removeItem('token');
             sessionStorage.removeItem('isLoggedIn');
-            navigate('/login');
+            
+            // Only navigate to login if we're not already there
+            if (!location.pathname.includes('/login')) {
+              navigate(`/login?redirect=${encodeURIComponent(location.pathname + location.search)}`);
+            }
+          } else {
+            // If token is valid, set the login flag
+            sessionStorage.setItem('isLoggedIn', 'true');
           }
         } catch (error) {
           console.error('Token verification failed:', error);
           localStorage.removeItem('token');
           sessionStorage.removeItem('isLoggedIn');
-          navigate('/login');
+          
+          // Only navigate to login if we're not already there
+          if (!location.pathname.includes('/login')) {
+            navigate(`/login?redirect=${encodeURIComponent(location.pathname + location.search)}`);
+          }
         }
       }
     };
 
     checkAuth();
-  }, [navigate]);
+  }, [navigate, location.pathname, location.search]);
 
   return (
     <QueryClientProvider client={queryClient}>
-      <Toaster richColors position="top-center" />
+      <AuthProvider>
-      <Routes>
+        <Toaster richColors position="top-center" />
-        <Route path="/login" element={<Login />} />
+        <Routes>
-        <Route element={
+          <Route path="/login" element={<Login />} />
-          <RequireAuth>
+          <Route element={
-            <MainLayout />
+            <RequireAuth>
-          </RequireAuth>
+              <MainLayout />
-        }>
+            </RequireAuth>
-          <Route path="/" element={<Dashboard />} />
+          }>
-          <Route path="/products" element={<Products />} />
+            <Route path="/" element={<Dashboard />} />
-          <Route path="/import" element={<Import />} />
+            <Route path="/products" element={<Products />} />
-          <Route path="/categories" element={<Categories />} />
+            <Route path="/import" element={<Import />} />
-          <Route path="/vendors" element={<Vendors />} />
+            <Route path="/categories" element={<Categories />} />
-          <Route path="/purchase-orders" element={<PurchaseOrders />} />
+            <Route path="/vendors" element={<Vendors />} />
-          <Route path="/analytics" element={<Analytics />} />
+            <Route path="/purchase-orders" element={<PurchaseOrders />} />
-          <Route path="/settings" element={<Settings />} />
+            <Route path="/analytics" element={<Analytics />} />
-          <Route path="/forecasting" element={<Forecasting />} />
+            <Route path="/settings" element={<Settings />} />
-          <Route path="/ai-validation/debug" element={<AiValidationDebug />} />
+            <Route path="/forecasting" element={<Forecasting />} />
-          <Route path="*" element={<Navigate to="/" replace />} />
+            <Route path="/ai-validation/debug" element={<AiValidationDebug />} />
-        </Route>
+            <Route path="*" element={<Navigate to="/" replace />} />
-      </Routes>
+          </Route>
+        </Routes>
+      </AuthProvider>
     </QueryClientProvider>
   );
 }

inventory/src/components/auth/RequireAuth.tsx

@@ -1,9 +1,22 @@
 import { Navigate, useLocation } from "react-router-dom"
+import { useContext, useEffect } from "react"
+import { AuthContext } from "@/contexts/AuthContext"
 
 export function RequireAuth({ children }: { children: React.ReactNode }) {
   const isLoggedIn = sessionStorage.getItem("isLoggedIn") === "true"
+  const { token, fetchCurrentUser } = useContext(AuthContext)
   const location = useLocation()
 
+  // Check if token exists but we're not logged in
+  useEffect(() => {
+    if (token && !isLoggedIn) {
+      // Verify the token and fetch user data
+      fetchCurrentUser().catch(() => {
+        // Do nothing - the AuthContext will handle errors
+      })
+    }
+  }, [token, isLoggedIn, fetchCurrentUser])
+
   if (!isLoggedIn) {
     // Redirect to login with the current path in the redirect parameter
     return <Navigate 

inventory/src/components/layout/AppSidebar.tsx

@@ -24,47 +24,56 @@ import {
   SidebarSeparator,
 } from "@/components/ui/sidebar";
 import { useLocation, useNavigate, Link } from "react-router-dom";
+import { PermissionGuard } from "@/components/common/PermissionGuard";
 
 const items = [
   {
     title: "Overview",
     icon: Home,
     url: "/",
+    permission: "access:dashboard"
   },
   {
     title: "Products",
     icon: Package,
     url: "/products",
+    permission: "access:products"
   },
   {
     title: "Import",
     icon: FileSpreadsheet,
     url: "/import",
+    permission: "access:import"
   },
   {
     title: "Forecasting",
     icon: IconCrystalBall,
     url: "/forecasting",
+    permission: "access:forecasting"
   },
   {
     title: "Categories",
     icon: Tags,
     url: "/categories",
+    permission: "access:categories"
   },
   {
     title: "Vendors",
     icon: Users,
     url: "/vendors",
+    permission: "access:vendors"
   },
   {
     title: "Purchase Orders",
     icon: ClipboardList,
     url: "/purchase-orders",
+    permission: "access:purchase-orders"
   },
   {
     title: "Analytics",
     icon: BarChart2,
     url: "/analytics",
+    permission: "access:analytics"
   },
 ];
 
@@ -73,8 +82,8 @@ export function AppSidebar() {
   const navigate = useNavigate();
 
   const handleLogout = () => {
+    localStorage.removeItem('token');
     sessionStorage.removeItem('isLoggedIn');
-    sessionStorage.removeItem('token');
     navigate('/login');
   };
 
@@ -98,20 +107,26 @@ export function AppSidebar() {
                   location.pathname === item.url ||
                   (item.url !== "/" && location.pathname.startsWith(item.url));
                 return (
-                  <SidebarMenuItem key={item.title}>
+                  <PermissionGuard
-                    <SidebarMenuButton
+                    key={item.title}
-                      asChild
+                    permission={item.permission}
-                      tooltip={item.title}
+                    fallback={null}
-                      isActive={isActive}
+                  >
-                    >
+                    <SidebarMenuItem>
-                      <Link to={item.url}>
+                      <SidebarMenuButton
-                        <item.icon className="h-4 w-4" />
+                        asChild
-                        <span className="group-data-[collapsible=icon]:hidden">
+                        tooltip={item.title}
-                          {item.title}
+                        isActive={isActive}
-                        </span>
+                      >
-                      </Link>
+                        <Link to={item.url}>
-                    </SidebarMenuButton>
+                          <item.icon className="h-4 w-4" />
-                  </SidebarMenuItem>
+                          <span className="group-data-[collapsible=icon]:hidden">
+                            {item.title}
+                          </span>
+                        </Link>
+                      </SidebarMenuButton>
+                    </SidebarMenuItem>
+                  </PermissionGuard>
                 );
               })}
             </SidebarMenu>
@@ -122,20 +137,25 @@ export function AppSidebar() {
         <SidebarGroup>
           <SidebarGroupContent>
             <SidebarMenu>
-              <SidebarMenuItem>
+              <PermissionGuard
-                <SidebarMenuButton
+                permission="access:settings"
-                  asChild
+                fallback={null}
-                  tooltip="Settings"
+              >
-                  isActive={location.pathname === "/settings"}
+                <SidebarMenuItem>
-                >
+                  <SidebarMenuButton
-                  <Link to="/settings">
+                    asChild
-                    <Settings className="h-4 w-4" />
+                    tooltip="Settings"
-                    <span className="group-data-[collapsible=icon]:hidden">
+                    isActive={location.pathname === "/settings"}
-                      Settings
+                  >
-                    </span>
+                    <Link to="/settings">
-                  </Link>
+                      <Settings className="h-4 w-4" />
-                </SidebarMenuButton>
+                      <span className="group-data-[collapsible=icon]:hidden">
-              </SidebarMenuItem>
+                        Settings
+                      </span>
+                    </Link>
+                  </SidebarMenuButton>
+                </SidebarMenuItem>
+              </PermissionGuard>
             </SidebarMenu>
           </SidebarGroupContent>
         </SidebarGroup>

inventory/src/components/settings/UserManagement.tsx

@@ -1,9 +1,13 @@
-import { useState, useEffect } from "react";
+import { useState, useEffect, useContext } from "react";
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
-import { Alert, AlertDescription } from "@/components/ui/alert";
+import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert";
 import { Button } from "@/components/ui/button";
 import { UserList } from "./UserList";
 import { UserForm } from "./UserForm";
+import config from "@/config";
+import { AuthContext } from "@/contexts/AuthContext";
+import { usePermissions } from "@/hooks/usePermissions";
+import { ShieldAlert } from "lucide-react";
 
 interface User {
   id: number;
@@ -29,6 +33,8 @@ interface PermissionCategory {
 }
 
 export function UserManagement() {
+  const { token, fetchCurrentUser } = useContext(AuthContext);
+  const { hasPermission } = usePermissions();
   const [users, setUsers] = useState<User[]>([]);
   const [selectedUser, setSelectedUser] = useState<User | null>(null);
   const [isAddingUser, setIsAddingUser] = useState(false);
@@ -37,53 +43,96 @@ export function UserManagement() {
   const [error, setError] = useState<string | null>(null);
 
   // Fetch users and permissions
-  useEffect(() => {
+  const fetchData = async () => {
-    const fetchData = async () => {
+    if (!token) {
-      try {
+      setError("Authentication required. Please log in again.");
-        // Fetch users
+      setLoading(false);
-        const usersResponse = await fetch('/auth-inv/users', {
+      return;
-          headers: {
+    }
-            'Authorization': `Bearer ${localStorage.getItem('token')}`
-          }
-        });
-        
-        if (!usersResponse.ok) {
-          throw new Error('Failed to fetch users');
-        }
-        
-        const usersData = await usersResponse.json();
-        setUsers(usersData);
-        
-        // Fetch permissions
-        const permissionsResponse = await fetch('/auth-inv/permissions/categories', {
-          headers: {
-            'Authorization': `Bearer ${localStorage.getItem('token')}`
-          }
-        });
-        
-        if (!permissionsResponse.ok) {
-          throw new Error('Failed to fetch permissions');
-        }
-        
-        const permissionsData = await permissionsResponse.json();
-        setPermissions(permissionsData);
-        
-        setLoading(false);
-      } catch (err) {
-        const errorMessage = err instanceof Error ? err.message : 'An error occurred';
-        setError(errorMessage);
-        setLoading(false);
-      }
-    };
 
+    // The PermissionGuard component already handles permission checks,
+    // so we don't need to duplicate that logic here
+    
+    try {
+      setLoading(true);
+      setError(null);
+      
+      // Fetch users
+      const usersResponse = await fetch(`${config.authUrl}/users`, {
+        headers: {
+          'Authorization': `Bearer ${token}`
+        }
+      });
+      
+      if (!usersResponse.ok) {
+        if (usersResponse.status === 401) {
+          throw new Error('Authentication failed. Please log in again.');
+        } else if (usersResponse.status === 403) {
+          throw new Error('You don\'t have permission to access the user list.');
+        } else {
+          // Try to get more detailed error message from response
+          try {
+            const errorData = await usersResponse.json();
+            throw new Error(errorData.error || `Failed to fetch users (${usersResponse.status})`);
+          } catch (e) {
+            throw new Error(`Failed to fetch users (${usersResponse.status})`);
+          }
+        }
+      }
+      
+      const usersData = await usersResponse.json();
+      setUsers(usersData);
+      
+      // Fetch permissions
+      const permissionsResponse = await fetch(`${config.authUrl}/permissions/categories`, {
+        headers: {
+          'Authorization': `Bearer ${token}`
+        }
+      });
+      
+      if (!permissionsResponse.ok) {
+        if (permissionsResponse.status === 401) {
+          throw new Error('Authentication failed. Please log in again.');
+        } else if (permissionsResponse.status === 403) {
+          throw new Error('You don\'t have permission to access permissions.');
+        } else {
+          // Try to get more detailed error message from response
+          try {
+            const errorData = await permissionsResponse.json();
+            throw new Error(errorData.error || `Failed to fetch permissions (${permissionsResponse.status})`);
+          } catch (e) {
+            throw new Error(`Failed to fetch permissions (${permissionsResponse.status})`);
+          }
+        }
+      }
+      
+      const permissionsData = await permissionsResponse.json();
+      setPermissions(permissionsData);
+      
+      setLoading(false);
+    } catch (err) {
+      const errorMessage = err instanceof Error ? err.message : 'An error occurred';
+      setError(errorMessage);
+      setLoading(false);
+      
+      // If authentication error, refresh the token
+      if (err instanceof Error && err.message.includes('Authentication failed')) {
+        fetchCurrentUser().catch(() => {
+          // Handle failed token refresh
+        });
+      }
+    }
+  };
+
+  useEffect(() => {
     fetchData();
-  }, []);
+  }, [token]);
 
   const handleEditUser = async (userId: number) => {
     try {
-      const response = await fetch(`/auth-inv/users/${userId}`, {
+      const response = await fetch(`${config.authUrl}/users/${userId}`, {
         headers: {
-          'Authorization': `Bearer ${localStorage.getItem('token')}`
+          'Authorization': `Bearer ${token}`
         }
       });
       
@@ -110,15 +159,15 @@ export function UserManagement() {
       setLoading(true);
       
       const endpoint = userData.id 
-        ? `/auth-inv/users/${userData.id}` 
+        ? `${config.authUrl}/users/${userData.id}` 
-        : '/auth-inv/users';
+        : `${config.authUrl}/users`;
         
       const method = userData.id ? 'PUT' : 'POST';
       
       const response = await fetch(endpoint, {
         method,
         headers: {
-          'Authorization': `Bearer ${localStorage.getItem('token')}`,
+          'Authorization': `Bearer ${token}`,
           'Content-Type': 'application/json'
         },
         body: JSON.stringify(userData)
@@ -129,20 +178,12 @@ export function UserManagement() {
         throw new Error(errorData.error || 'Failed to save user');
       }
       
-      // Refresh user list
+      // Refresh user list after a successful save
-      const usersResponse = await fetch('/auth-inv/users', {
+      await fetchData();
-        headers: {
-          'Authorization': `Bearer ${localStorage.getItem('token')}`
-        }
-      });
-      
-      const updatedUsers = await usersResponse.json();
-      setUsers(updatedUsers);
       
       // Reset form state
       setSelectedUser(null);
       setIsAddingUser(false);
-      setLoading(false);
     } catch (err) {
       const errorMessage = err instanceof Error ? err.message : 'Failed to save user';
       setError(errorMessage);
@@ -158,10 +199,10 @@ export function UserManagement() {
     try {
       setLoading(true);
       
-      const response = await fetch(`/auth-inv/users/${userId}`, {
+      const response = await fetch(`${config.authUrl}/users/${userId}`, {
         method: 'DELETE',
         headers: {
-          'Authorization': `Bearer ${localStorage.getItem('token')}`
+          'Authorization': `Bearer ${token}`
         }
       });
       
@@ -169,16 +210,8 @@ export function UserManagement() {
         throw new Error('Failed to delete user');
       }
       
-      // Refresh user list
+      // Refresh user list after a successful delete
-      const usersResponse = await fetch('/auth-inv/users', {
+      await fetchData();
-        headers: {
-          'Authorization': `Bearer ${localStorage.getItem('token')}`
-        }
-      });
-      
-      const updatedUsers = await usersResponse.json();
-      setUsers(updatedUsers);
-      setLoading(false);
     } catch (err) {
       const errorMessage = err instanceof Error ? err.message : 'Failed to delete user';
       setError(errorMessage);
@@ -207,9 +240,14 @@ export function UserManagement() {
     return (
       <Card>
         <CardContent className="pt-6">
-          <Alert variant="destructive">
+          <Alert variant="destructive" className="mb-4">
+            <ShieldAlert className="h-4 w-4" />
+            <AlertTitle>Permission Error</AlertTitle>
             <AlertDescription>{error}</AlertDescription>
           </Alert>
+          <div className="flex justify-center">
+            <Button onClick={fetchData}>Retry</Button>
+          </div>
         </CardContent>
       </Card>
     );

inventory/src/contexts/AuthContext.tsx

@@ -1,4 +1,5 @@
-import { createContext, useState, useEffect, ReactNode } from 'react';
+import { createContext, useState, useEffect, ReactNode, useCallback } from 'react';
+import config from '@/config';
 
 export interface Permission {
   id: number;
@@ -44,52 +45,61 @@ export function AuthProvider({ children }: { children: ReactNode }) {
   const [isLoading, setIsLoading] = useState<boolean>(false);
   const [error, setError] = useState<string | null>(null);
 
-  // Load token from localStorage on init
+  const fetchCurrentUser = useCallback(async () => {
-  useEffect(() => {
-    const storedToken = localStorage.getItem('token');
-    if (storedToken) {
-      setToken(storedToken);
-      fetchCurrentUser();
-    }
-  }, []);
-
-  const fetchCurrentUser = async () => {
     if (!token) return;
 
     try {
       setIsLoading(true);
       setError(null);
 
-      const response = await fetch('/auth-inv/me', {
+      const response = await fetch(`${config.authUrl}/me`, {
         headers: {
           'Authorization': `Bearer ${token}`
         }
       });
 
       if (!response.ok) {
-        throw new Error('Failed to fetch user data');
+        const errorData = await response.json().catch(() => ({}));
+        throw new Error(errorData.error || 'Failed to fetch user data');
       }
 
       const userData = await response.json();
       setUser(userData);
+      // Ensure we have the sessionStorage isLoggedIn flag set
+      sessionStorage.setItem('isLoggedIn', 'true');
     } catch (err) {
       const errorMessage = err instanceof Error ? err.message : 'An unknown error occurred';
       setError(errorMessage);
+      console.error('Auth error:', errorMessage);
+      
       // Clear token if authentication failed
-      if (err instanceof Error && err.message.includes('authentication')) {
+      if (err instanceof Error && 
+          (err.message.includes('authentication') || 
+          err.message.includes('token') || 
+          err.message.includes('401'))) {
         logout();
       }
     } finally {
       setIsLoading(false);
     }
-  };
+  }, [token]);
+
+  // Load token and fetch user data on init
+  useEffect(() => {
+    if (token) {
+      fetchCurrentUser();
+    } else {
+      // Clear sessionStorage if no token exists
+      sessionStorage.removeItem('isLoggedIn');
+    }
+  }, [token, fetchCurrentUser]);
 
   const login = async (username: string, password: string) => {
     try {
       setIsLoading(true);
       setError(null);
 
-      const response = await fetch('/auth-inv/login', {
+      const response = await fetch(`${config.authUrl}/login`, {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json'
@@ -98,18 +108,20 @@ export function AuthProvider({ children }: { children: ReactNode }) {
       });
 
       if (!response.ok) {
-        const errorData = await response.json();
+        const errorData = await response.json().catch(() => ({}));
         throw new Error(errorData.error || 'Login failed');
       }
 
       const data = await response.json();
       
       localStorage.setItem('token', data.token);
+      sessionStorage.setItem('isLoggedIn', 'true');
       setToken(data.token);
       setUser(data.user);
     } catch (err) {
       const errorMessage = err instanceof Error ? err.message : 'Login failed';
       setError(errorMessage);
+      console.error('Login error:', errorMessage);
       throw err;
     } finally {
       setIsLoading(false);
@@ -118,6 +130,7 @@ export function AuthProvider({ children }: { children: ReactNode }) {
 
   const logout = () => {
     localStorage.removeItem('token');
+    sessionStorage.removeItem('isLoggedIn');
     setToken(null);
     setUser(null);
   };

inventory/src/hooks/usePagePermission.ts

@@ -0,0 +1,101 @@
+import { usePermissions } from './usePermissions';
+import { useNavigate } from 'react-router-dom';
+import { useEffect, useState } from 'react';
+
+interface PagePermissionConfig {
+  // The permission required to access the specific page
+  permission?: string;
+  
+  // Array of permissions where ANY must be present
+  anyPermissions?: string[];
+  
+  // Array of permissions where ALL must be present
+  allPermissions?: string[];
+  
+  // Whether this page is admin-only
+  adminOnly?: boolean;
+  
+  // Page identifier for page-specific access check
+  page?: string;
+  
+  // Redirect path if permission check fails
+  redirectTo?: string;
+}
+
+/**
+ * Hook to check if a user has permission to access a specific page
+ * Will automatically redirect if permission is denied
+ */
+export function usePagePermission(config: PagePermissionConfig) {
+  const { 
+    permission, 
+    anyPermissions, 
+    allPermissions, 
+    adminOnly = false, 
+    page,
+    redirectTo = '/'
+  } = config;
+  
+  const navigate = useNavigate();
+  const { 
+    hasPermission, 
+    hasPageAccess, 
+    hasAnyPermission, 
+    hasAllPermissions, 
+    isAdmin 
+  } = usePermissions();
+  
+  const [hasAccess, setHasAccess] = useState<boolean | null>(null);
+  
+  useEffect(() => {
+    // Check permissions
+    let permitted = true;
+    
+    // Admin check
+    if (adminOnly && !isAdmin) {
+      permitted = false;
+    }
+    
+    // Page access check
+    if (page && !hasPageAccess(page)) {
+      permitted = false;
+    }
+    
+    // Single permission check
+    if (permission && !hasPermission(permission)) {
+      permitted = false;
+    }
+    
+    // Any permissions check
+    if (anyPermissions && !hasAnyPermission(anyPermissions)) {
+      permitted = false;
+    }
+    
+    // All permissions check
+    if (allPermissions && !hasAllPermissions(allPermissions)) {
+      permitted = false;
+    }
+    
+    setHasAccess(permitted);
+    
+    // Redirect if no permission
+    if (permitted === false) {
+      navigate(redirectTo);
+    }
+  }, [
+    permission, 
+    anyPermissions, 
+    allPermissions, 
+    adminOnly, 
+    page, 
+    redirectTo,
+    hasPermission,
+    hasPageAccess,
+    hasAnyPermission,
+    hasAllPermissions,
+    isAdmin,
+    navigate
+  ]);
+  
+  return hasAccess;
+} 

inventory/src/pages/Settings.tsx

@@ -6,8 +6,24 @@ import { CalculationSettings } from "@/components/settings/CalculationSettings";
 import { TemplateManagement } from "@/components/settings/TemplateManagement";
 import { UserManagement } from "@/components/settings/UserManagement";
 import { motion } from 'motion/react';
+import { PermissionGuard } from "@/components/common/PermissionGuard";
+import { Alert, AlertDescription } from "@/components/ui/alert";
+import { usePagePermission } from "@/hooks/usePagePermission";
+import { useEffect } from "react";
 
 export function Settings() {
+  // Check if the user has permission to access the Settings page
+  // This will automatically redirect if permission is denied
+  const hasAccess = usePagePermission({
+    page: 'settings',
+    redirectTo: '/'
+  });
+
+  // Prevent flash of content before redirect
+  if (hasAccess === false) {
+    return null;
+  }
+
   return (
     <motion.div layout className="container mx-auto py-6">
       <div className="mb-6">
@@ -27,9 +43,14 @@ export function Settings() {
           <TabsTrigger value="templates">
             Template Management
           </TabsTrigger>
-          <TabsTrigger value="user-management">
+          <PermissionGuard 
-            User Management
+            permission="manage:users" 
-          </TabsTrigger>
+            fallback={null}
+          >
+            <TabsTrigger value="user-management">
+              User Management
+            </TabsTrigger>
+          </PermissionGuard>
         </TabsList>
 
         <TabsContent value="data-management">
@@ -53,7 +74,18 @@ export function Settings() {
         </TabsContent>
         
         <TabsContent value="user-management">
-          <UserManagement />
+          <PermissionGuard 
+            permission="manage:users" 
+            fallback={
+              <Alert>
+                <AlertDescription>
+                  You don't have permission to access User Management.
+                </AlertDescription>
+              </Alert>
+            }
+          >
+            <UserManagement />
+          </PermissionGuard>
         </TabsContent>
       </Tabs>
     </motion.div>