import { lazy, Suspense, useEffect, useRef } from "react";
import { Toaster } from "@/components/ui/toaster";
import { Toaster as Sonner } from "@/components/ui/sonner";
import { TooltipProvider } from "@/components/ui/tooltip";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { ReactQueryDevtools } from "@tanstack/react-query-devtools";
import { BrowserRouter, Routes, Route, useLocation } from "react-router-dom";
import { AuthProvider } from "@/hooks/useAuth";
import { AuthModalProvider } from "@/contexts/AuthModalContext";
import { MFAStepUpProvider } from "@/contexts/MFAStepUpContext";
import { APIConnectivityProvider, useAPIConnectivity } from "@/contexts/APIConnectivityContext";
import { LocationAutoDetectProvider } from "@/components/providers/LocationAutoDetectProvider";
import { AnalyticsWrapper } from "@/components/analytics/AnalyticsWrapper";
import { Footer } from "@/components/layout/Footer";
import { PageLoader } from "@/components/loading/PageSkeletons";
import { RouteErrorBoundary } from "@/components/error/RouteErrorBoundary";
import { AdminErrorBoundary } from "@/components/error/AdminErrorBoundary";
import { EntityErrorBoundary } from "@/components/error/EntityErrorBoundary";
import { breadcrumb } from "@/lib/errorBreadcrumbs";
import { handleError } from "@/lib/errorHandler";
import { RetryStatusIndicator } from "@/components/ui/retry-status-indicator";
import { APIStatusBanner } from "@/components/ui/api-status-banner";
import { ResilienceProvider } from "@/components/layout/ResilienceProvider";
import { useAdminRoutePreload } from "@/hooks/useAdminRoutePreload";
import { useVersionCheck } from "@/hooks/useVersionCheck";
import { cn } from "@/lib/utils";

// Core routes (eager-loaded for best UX)
import Index from "./pages/Index";
import Parks from "./pages/Parks";
import Rides from "./pages/Rides";
import Search from "./pages/Search";
import Auth from "./pages/Auth";

// Temporary test component for error logging verification
import { TestErrorLogging } from "./test-error-logging";

// Detail routes (lazy-loaded)
const ParkDetail = lazy(() => import("./pages/ParkDetail"));
const RideDetail = lazy(() => import("./pages/RideDetail"));
const ParkRides = lazy(() => import("./pages/ParkRides"));
const Manufacturers = lazy(() => import("./pages/Manufacturers"));
const ManufacturerDetail = lazy(() => import("./pages/ManufacturerDetail"));
const ManufacturerRides = lazy(() => import("./pages/ManufacturerRides"));
const ManufacturerModels = lazy(() => import("./pages/ManufacturerModels"));
const RideModelDetail = lazy(() => import("./pages/RideModelDetail"));
const RideModelRides = lazy(() => import("./pages/RideModelRides"));
const Designers = lazy(() => import("./pages/Designers"));
const DesignerDetail = lazy(() => import("./pages/DesignerDetail"));
const DesignerRides = lazy(() => import("./pages/DesignerRides"));
const ParkOwners = lazy(() => import("./pages/ParkOwners"));
const PropertyOwnerDetail = lazy(() => import("./pages/PropertyOwnerDetail"));
const OwnerParks = lazy(() => import("./pages/OwnerParks"));
const Operators = lazy(() => import("./pages/Operators"));
const OperatorDetail = lazy(() => import("./pages/OperatorDetail"));
const OperatorParks = lazy(() => import("./pages/OperatorParks"));
const BlogIndex = lazy(() => import("./pages/BlogIndex"));
const BlogPost = lazy(() => import("./pages/BlogPost"));
const Terms = lazy(() => import("./pages/Terms"));
const Privacy = lazy(() => import("./pages/Privacy"));
const SubmissionGuidelines = lazy(() => import("./pages/SubmissionGuidelines"));
const Contact = lazy(() => import("./pages/Contact"));

// Admin routes (lazy-loaded - heavy bundle)
const AdminDashboard = lazy(() => import("./pages/AdminDashboard"));
const AdminModeration = lazy(() => import("./pages/AdminModeration"));
const AdminReports = lazy(() => import("./pages/AdminReports"));
const AdminSystemLog = lazy(() => import("./pages/AdminSystemLog"));
const AdminUsers = lazy(() => import("./pages/AdminUsers"));
const AdminBlog = lazy(() => import("./pages/AdminBlog"));
const AdminSettings = lazy(() => import("./pages/AdminSettings"));
const AdminContact = lazy(() => import("./pages/admin/AdminContact"));
const AdminEmailSettings = lazy(() => import("./pages/admin/AdminEmailSettings"));
const ErrorMonitoring = lazy(() => import("./pages/admin/ErrorMonitoring"));
const ErrorLookup = lazy(() => import("./pages/admin/ErrorLookup"));

// User routes (lazy-loaded)
const Profile = lazy(() => import("./pages/Profile"));
const UserSettings = lazy(() => import("./pages/UserSettings"));
const AuthCallback = lazy(() => import("./pages/AuthCallback"));

// Utility routes (lazy-loaded)
const NotFound = lazy(() => import("./pages/NotFound"));
const ForceLogout = lazy(() => import("./pages/ForceLogout"));

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      refetchOnWindowFocus: false, // Disable automatic refetch on tab focus
      refetchOnMount: true, // Keep refetch on component mount
      refetchOnReconnect: true, // Keep refetch on network reconnect
      retry: 1, // Keep retry attempts
      staleTime: 30000, // 30 seconds - queries stay fresh for 30s
      gcTime: 5 * 60 * 1000, // 5 minutes - keep in cache for 5 mins
    },
    mutations: {
      onError: (error: unknown, variables: unknown, context: unknown) => {
        // Track mutation errors with breadcrumbs
        const contextObj = context as { endpoint?: string } | undefined;
        const errorObj = error as { status?: number } | undefined;
        
        breadcrumb.apiCall(
          contextObj?.endpoint || 'mutation',
          'MUTATION',
          errorObj?.status || 500
        );
        
        // Handle error with tracking
        handleError(error, {
          action: 'Mutation failed',
          metadata: {
            variables,
            context,
          },
        });
      },
    },
  },
});

// Navigation tracking component - must be inside Router context
function NavigationTracker() {
  const location = useLocation();
  const prevLocation = useRef<string>('');

  useEffect(() => {
    const from = prevLocation.current || undefined;
    breadcrumb.navigation(location.pathname, from);
    prevLocation.current = location.pathname;
    
    // Clear chunk load reload flag on successful navigation
    sessionStorage.removeItem('chunk-load-reload');
  }, [location.pathname]);

  return null;
}

function AppContent(): React.JSX.Element {
  // Check if API status banner is visible to add padding
  const { isAPIReachable, isBannerDismissed } = useAPIConnectivity();
  const showBanner = !isAPIReachable && !isBannerDismissed;
  
  // Preload admin routes for moderators/admins
  useAdminRoutePreload();
  
  // Monitor for new deployments
  useVersionCheck();

  return (
    <TooltipProvider>
      <ResilienceProvider>
        <APIStatusBanner />
        <div className={cn(showBanner && "pt-20")}>
          <NavigationTracker />
          <LocationAutoDetectProvider />
          <RetryStatusIndicator />
          <Toaster />
          <Sonner />
          <div className="min-h-screen flex flex-col">
            <div className="flex-1">
              <Suspense fallback={<PageLoader />}>
                <RouteErrorBoundary>
                  <Routes>
                  {/* Core routes - eager loaded */}
                  <Route path="/" element={<Index />} />
                  <Route path="/parks" element={<Parks />} />
                  <Route path="/rides" element={<Rides />} />
                  <Route path="/search" element={<Search />} />
                  <Route path="/auth" element={<Auth />} />
                  
                  {/* Detail routes with entity error boundaries */}
                  <Route 
                    path="/parks/:slug" 
                    element={
                      <EntityErrorBoundary entityType="park">
                        <ParkDetail />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/parks/:parkSlug/rides" 
                    element={
                      <EntityErrorBoundary entityType="park">
                        <ParkRides />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/parks/:parkSlug/rides/:rideSlug" 
                    element={
                      <EntityErrorBoundary entityType="ride">
                        <RideDetail />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route path="/manufacturers" element={<Manufacturers />} />
                  <Route 
                    path="/manufacturers/:slug" 
                    element={
                      <EntityErrorBoundary entityType="manufacturer">
                        <ManufacturerDetail />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/manufacturers/:manufacturerSlug/rides" 
                    element={
                      <EntityErrorBoundary entityType="manufacturer">
                        <ManufacturerRides />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/manufacturers/:manufacturerSlug/models" 
                    element={
                      <EntityErrorBoundary entityType="manufacturer">
                        <ManufacturerModels />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/manufacturers/:manufacturerSlug/models/:modelSlug" 
                    element={
                      <EntityErrorBoundary entityType="manufacturer">
                        <RideModelDetail />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/manufacturers/:manufacturerSlug/models/:modelSlug/rides" 
                    element={
                      <EntityErrorBoundary entityType="manufacturer">
                        <RideModelRides />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route path="/designers" element={<Designers />} />
                  <Route 
                    path="/designers/:slug" 
                    element={
                      <EntityErrorBoundary entityType="designer">
                        <DesignerDetail />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/designers/:designerSlug/rides" 
                    element={
                      <EntityErrorBoundary entityType="designer">
                        <DesignerRides />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route path="/owners" element={<ParkOwners />} />
                  <Route 
                    path="/owners/:slug" 
                    element={
                      <EntityErrorBoundary entityType="owner">
                        <PropertyOwnerDetail />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/owners/:ownerSlug/parks" 
                    element={
                      <EntityErrorBoundary entityType="owner">
                        <OwnerParks />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route path="/operators" element={<Operators />} />
                  <Route 
                    path="/operators/:slug" 
                    element={
                      <EntityErrorBoundary entityType="operator">
                        <OperatorDetail />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/operators/:operatorSlug/parks" 
                    element={
                      <EntityErrorBoundary entityType="operator">
                        <OperatorParks />
                      </EntityErrorBoundary>
                    } 
                  />
                  <Route path="/blog" element={<BlogIndex />} />
                  <Route path="/blog/:slug" element={<BlogPost />} />
                  <Route path="/terms" element={<Terms />} />
                  <Route path="/privacy" element={<Privacy />} />
                  <Route path="/submission-guidelines" element={<SubmissionGuidelines />} />
                  <Route path="/contact" element={<Contact />} />
                  
                  {/* User routes - lazy loaded */}
                  <Route path="/auth/callback" element={<AuthCallback />} />
                  <Route path="/profile" element={<Profile />} />
                  <Route path="/profile/:username" element={<Profile />} />
                  <Route path="/settings" element={<UserSettings />} />
                  
                  {/* Admin routes with admin error boundaries */}
                  <Route 
                    path="/admin" 
                    element={
                      <AdminErrorBoundary section="Dashboard">
                        <AdminDashboard />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/moderation" 
                    element={
                      <AdminErrorBoundary section="Moderation Queue">
                        <AdminModeration />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/reports" 
                    element={
                      <AdminErrorBoundary section="Reports">
                        <AdminReports />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/system-log" 
                    element={
                      <AdminErrorBoundary section="System Log">
                        <AdminSystemLog />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/users" 
                    element={
                      <AdminErrorBoundary section="User Management">
                        <AdminUsers />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/blog" 
                    element={
                      <AdminErrorBoundary section="Blog Management">
                        <AdminBlog />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/settings" 
                    element={
                      <AdminErrorBoundary section="Settings">
                        <AdminSettings />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/contact" 
                    element={
                      <AdminErrorBoundary section="Contact Management">
                        <AdminContact />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/email-settings" 
                    element={
                      <AdminErrorBoundary section="Email Settings">
                        <AdminEmailSettings />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/error-monitoring" 
                    element={
                      <AdminErrorBoundary section="Error Monitoring">
                        <ErrorMonitoring />
                      </AdminErrorBoundary>
                    } 
                  />
                  <Route 
                    path="/admin/error-lookup" 
                    element={
                      <AdminErrorBoundary section="Error Lookup">
                        <ErrorLookup />
                      </AdminErrorBoundary>
                    } 
                  />
                  
                  {/* Utility routes - lazy loaded */}
                  <Route path="/force-logout" element={<ForceLogout />} />
                  
                  {/* Temporary test route - DELETE AFTER TESTING */}
                  <Route path="/test-error-logging" element={<TestErrorLogging />} />
                  
                  {/* ADD ALL CUSTOM ROUTES ABOVE THE CATCH-ALL "*" ROUTE */}
                  <Route path="*" element={<NotFound />} />
                </Routes>
              </RouteErrorBoundary>
            </Suspense>
          </div>
          <Footer />
        </div>
      </div>
      </ResilienceProvider>
    </TooltipProvider>
  );
}

const App = (): React.JSX.Element => {
  return (
    <QueryClientProvider client={queryClient}>
      <AuthProvider>
        <AuthModalProvider>
          <MFAStepUpProvider>
            <APIConnectivityProvider>
              <BrowserRouter>
                <AppContent />
              </BrowserRouter>
            </APIConnectivityProvider>
          </MFAStepUpProvider>
        </AuthModalProvider>
      </AuthProvider>
      {import.meta.env.DEV && <ReactQueryDevtools initialIsOpen={false} position="bottom" />}
      <AnalyticsWrapper />
    </QueryClientProvider>
  );
};

export default App;