feat: tạo hook useConfirm.tsx để dùng chung toàn hệ thống

frontend/src/App.tsx

@@ -4,6 +4,7 @@ import { ExploreMap } from './pages/ExploreMap';
 import { TourDetailPage } from './pages/TourDetailPage';
 import { SignupPage } from './pages/SignupPage';
 import { useTourStore } from './store/useTourStore';
+import { ConfirmProvider } from './hooks/useConfirm';
 
 function App() {
   const params = new URLSearchParams(window.location.search);
@@ -81,25 +82,31 @@ function App() {
     setCurrentPage('landing'); // Quay về trang Landing sau khi đăng ký thành công
   };
 
-  if (currentPage === 'tourDetail') {
-    return (
-      <TourDetailPage
-        tourId={currentTourId!} // tourId được đảm bảo không null ở đây
-        onBack={handleBackFromTourDetail}
-        isPublicView={isPublicTourView}
-      />
-    );
-  }
+  return (
+    <ConfirmProvider>
+      {(() => {
+        if (currentPage === 'tourDetail') {
+          return (
+            <TourDetailPage
+              tourId={currentTourId!} 
+              onBack={handleBackFromTourDetail}
+              isPublicView={isPublicTourView}
+            />
+          );
+        }
 
-  if (currentPage === 'explore') {
-    return <ExploreMap onBack={handleBackFromTourDetail} onLogout={handleLogout} user={user} onViewTour={handleViewTour} />;
-  }
+        if (currentPage === 'explore') {
+          return <ExploreMap onBack={handleBackFromTourDetail} onLogout={handleLogout} user={user} onViewTour={handleViewTour} />;
+        }
 
-  if (currentPage === 'signup') {
-    return <SignupPage onBack={handleBackFromSignup} onSuccess={handleSignupSuccess} />;
-  }
+        if (currentPage === 'signup') {
+          return <SignupPage onBack={handleBackFromSignup} onSuccess={handleSignupSuccess} />;
+        }
 
-  return <LandingPage onContinue={() => setCurrentPage('explore')} onGoToSignup={() => setCurrentPage('signup')} onGoToMap={() => setCurrentPage('explore')} onLoginSuccess={handleLoginSuccess} isInitialSetup={false} />;
+        return <LandingPage onContinue={() => setCurrentPage('explore')} onGoToSignup={() => setCurrentPage('signup')} onGoToMap={() => setCurrentPage('explore')} onLoginSuccess={handleLoginSuccess} isInitialSetup={false} />;
+      })()}
+    </ConfirmProvider>
+  );
 }
 
 export default App;