import './App.css'
import { Toaster } from "@/components/ui/toaster"
import { QueryClientProvider } from '@tanstack/react-query'
import { queryClientInstance } from '@/lib/query-client'
import VisualEditAgent from '@/lib/VisualEditAgent'
import NavigationTracker from '@/lib/NavigationTracker'
import { pagesConfig } from './pages.config'
import { BrowserRouter as Router, Route, Routes, useLocation } from 'react-router-dom';
import { setupIframeMessaging } from './lib/iframe-messaging';
import PageNotFound from './lib/PageNotFound';
import { AuthProvider, useAuth } from '@/lib/AuthContext';
import ErrorBoundary from '@/lib/ErrorBoundary';
import { appParams } from '@/lib/app-params';
import UserNotRegisteredError from '@/components/UserNotRegisteredError';
import FeatureReport from './pages/FeatureReport';
import LandingPage from './pages/LandingPage';
import KrowX from './pages/KrowX';
import AboutUs from './pages/AboutUs';
import ThePlatform from './pages/ThePlatform';
import ForWorkers from './pages/ForWorkers';
import PredictiveIntelligence from './pages/PredictiveIntelligence';
import KrowEdgePage from './pages/KrowEdge';
import Recruiting from './pages/Recruiting';
import Communications from './pages/Communications';
import Announcements from './pages/Announcements';
import StaffProfileDemo from './pages/StaffProfileDemo';
import CapabilityMap from './pages/CapabilityMap';
import PlatformOnboarding from './pages/PlatformOnboarding';
import DailyPL from './pages/DailyPL';
import Sales from './pages/Sales';
import PayrollDetail from './pages/PayrollDetail';
import EmployeeTimecard from './pages/EmployeeTimecard';
import ClientLaborReport from './pages/ClientLaborReport';
import WorkforceNetwork from './pages/WorkforceNetwork';
import KrowAI from './pages/KrowAI';
import StaffingMarketplace from './pages/StaffingMarketplace';
import KrowConsole from './pages/KrowConsole';
import KrowCommand from './pages/KrowCommand';
import DemandSupply from './pages/DemandSupply';
import DocumentApproval from './pages/DocumentApproval';
import VendorReports from './pages/VendorReports';

const { Pages, Layout, mainPage } = pagesConfig;
const mainPageKey = mainPage ?? Object.keys(Pages)[0];
const MainPage = mainPageKey ? Pages[mainPageKey] : <></>;

setupIframeMessaging();

const LayoutWrapper = ({ children, currentPageName }) => Layout ?
  <Layout currentPageName={currentPageName}>{children}</Layout>
  : <>{children}</>;

// Routes that render for anyone, signed in or not. LandingPage is pure marketing
// markup — it reads no entities and never touches useAuth — so the only thing the
// auth gate ever did for it was bounce visitors to a Google login before they
// could read what the product is. Its CTAs point at /Dashboard, which is still
// gated, so signing in stays one click away.
const PUBLIC_ROUTES = new Set(['/LandingPage']);

const isPublicRoute = (pathname) => {
  // Tolerate a trailing slash so /LandingPage/ isn't quietly sent to login.
  const normalized = pathname.length > 1 ? pathname.replace(/\/+$/, '') : pathname;
  return PUBLIC_ROUTES.has(normalized);
};

const AuthenticatedApp = () => {
  const { isLoadingAuth, isLoadingPublicSettings, authError, isAuthenticated, navigateToLogin } = useAuth();
  const location = useLocation();

  // Ahead of both gates below. The spinner would stall this page on a network
  // round-trip it has no use for, and the auth gate would redirect away from it —
  // either one defeats the point of a public page.
  if (isPublicRoute(location.pathname)) {
    return (
      <Routes>
        <Route path="/LandingPage" element={<LandingPage />} />
      </Routes>
    );
  }

  // Show loading spinner while checking app public settings or auth
  if (isLoadingPublicSettings || isLoadingAuth) {
    return (
      <div className="fixed inset-0 flex items-center justify-center">
        <div className="w-8 h-8 border-4 border-slate-200 border-t-slate-800 rounded-full animate-spin"></div>
      </div>
    );
  }

  // Handle authentication errors
  if (authError) {
    if (authError.type === 'user_not_registered') {
      return <UserNotRegisteredError />;
    } else if (authError.type === 'auth_required') {
      // Redirect to login automatically
      navigateToLogin();
      return null;
    }

    // Anything else (bad/missing app id, unreachable backend, network failure)
    // used to fall straight through to the app, which then crashed on the empty
    // data and left a blank page. Say what happened instead.
    return (
      <div className="min-h-screen flex items-center justify-center bg-slate-50 p-6">
        <div className="max-w-lg w-full bg-white border border-slate-200 rounded-lg shadow-sm p-6">
          <h1 className="text-lg font-semibold text-slate-900">Unable to load the app</h1>
          <p className="mt-2 text-sm text-slate-600">{authError.message || 'The Base44 backend could not be reached.'}</p>
          <p className="mt-4 text-xs text-slate-500">
            App ID: <code>{String(appParams.appId)}</code><br />
            Backend: <code>{String(appParams.serverUrl)}</code>
          </p>
        </div>
      </div>
    );
  }

  // Render the main app

  return (
    <LayoutWrapper currentPageName={mainPageKey}>
      <Routes>
        <Route path="/" element={<MainPage />} />
        {Object.entries(Pages).map(([path, Page]) => (
          <Route key={path} path={`/${path}`} element={<Page />} />
        ))}
        <Route path="/FeatureReport" element={<FeatureReport />} />
        <Route path="/LandingPage" element={<LandingPage />} />
        <Route path="/KrowX" element={<KrowX />} />
        <Route path="/AboutUs" element={<AboutUs />} />
        <Route path="/ThePlatform" element={<ThePlatform />} />
        <Route path="/ForWorkers" element={<ForWorkers />} />
        <Route path="/PredictiveIntelligence" element={<PredictiveIntelligence />} />
        <Route path="/KrowEdge" element={<KrowEdgePage />} />
        <Route path="/Recruiting" element={<Recruiting />} />
        <Route path="/Communications" element={<Communications />} />
        <Route path="/Announcements" element={<Announcements />} />
        <Route path="/StaffProfileDemo" element={<StaffProfileDemo />} />
        <Route path="/CapabilityMap" element={<CapabilityMap />} />
        <Route path="/PlatformOnboarding" element={<PlatformOnboarding />} />
        <Route path="/DailyPL" element={<DailyPL />} />
        <Route path="/Sales" element={<Sales />} />
        <Route path="/PayrollDetail" element={<PayrollDetail />} />
        <Route path="/EmployeeTimecard" element={<EmployeeTimecard />} />
        <Route path="/ClientLaborReport" element={<ClientLaborReport />} />
        <Route path="/WorkforceNetwork" element={<WorkforceNetwork />} />
        <Route path="/KrowAI" element={<KrowAI />} />
        <Route path="/StaffingMarketplace" element={<StaffingMarketplace />} />
        <Route path="/KrowConsole" element={<KrowConsole />} />
        <Route path="/KrowCommand" element={<KrowCommand />} />
        <Route path="/DemandSupply" element={<DemandSupply />} />
        <Route path="/DocumentApproval" element={<DocumentApproval />} />
        <Route path="/VendorReports" element={<VendorReports />} />
        <Route path="*" element={<PageNotFound />} />
      </Routes>
    </LayoutWrapper>
  );
};


function App() {

  return (
    <ErrorBoundary>
      <AuthProvider>
        <QueryClientProvider client={queryClientInstance}>
          <Router>
            <NavigationTracker />
            <AuthenticatedApp />
          </Router>
          <Toaster />
          <VisualEditAgent />
        </QueryClientProvider>
      </AuthProvider>
    </ErrorBoundary>
  )
}

export default App