import { lazy, Suspense, useEffect } from 'react'
import { App as AntdApp, ConfigProvider, Skeleton } from 'antd'
import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import { BrowserRouter, Navigate, Route, Routes, useLocation, useNavigate } from 'react-router-dom'
import zhCN from 'antd/locale/zh_CN'
import { useAuthStore } from '../stores/auth'

const LoginPage = lazy(() => import('../pages/LoginPage'))
const DashboardPage = lazy(() => import('../pages/DashboardPage'))
const AccountPage = lazy(() => import('../pages/AccountPage'))
const UsersPage = lazy(() => import('../pages/UsersPage'))
const NotificationsPage = lazy(() => import('../pages/NotificationsPage'))
const MyTimetablePage = lazy(() => import('../pages/MyTimetablePage'))
const ExamsPage = lazy(() => import('../pages/ExamsPage'))
const StudentGradesPage = lazy(() => import('../pages/StudentGradesPage'))
const StudentWarningsPage = lazy(() => import('../pages/StudentWarningsPage'))
const StudentProfilePage = lazy(() => import('../pages/StudentProfilePage'))
const StudentAttendancePage = lazy(() => import('../pages/StudentAttendancePage'))
const CourseSelectionPage = lazy(() => import('../pages/CourseSelectionPage'))
const StudentCurriculumPage = lazy(() => import('../pages/StudentCurriculumPage'))
const AcademicOverviewPage = lazy(() => import('../pages/AcademicOverviewPage'))
const FreeClassroomsPage = lazy(() => import('../pages/FreeClassroomsPage'))
const StudentStatusChangesPage = lazy(() => import('../pages/StudentStatusChangesPage'))
const OfficialDocumentsPage = lazy(() => import('../pages/OfficialDocumentsPage'))
const GraduationAuditPage = lazy(() => import('../pages/GraduationAuditPage'))
const TuitionPage = lazy(() => import('../pages/TuitionPage'))
const AcademicCalendarPage = lazy(() => import('../pages/AcademicCalendarPage'))
const OtherExamsPage = lazy(() => import('../pages/OtherExamsPage'))
const MakeupExamsPage = lazy(() => import('../pages/MakeupExamsPage'))
const EvaluationsPage = lazy(() => import('../pages/EvaluationsPage'))
const AcademicPlanningPage = lazy(() => import('../pages/AcademicPlanningPage'))
const PhysicalFitnessPage = lazy(() => import('../pages/PhysicalFitnessPage'))
const DegreeAwardsPage = lazy(() => import('../pages/DegreeAwardsPage'))
const GraduationClearancePage = lazy(() => import('../pages/GraduationClearancePage'))
const StudentExperimentsPage = lazy(() => import('../pages/StudentExperimentsPage'))
const StudentExperimentGradesPage = lazy(() => import('../pages/StudentExperimentGradesPage'))
const CampusRegistrationsPage = lazy(() => import('../pages/CampusRegistrationsPage'))
const StudentApprovalsPage = lazy(() => import('../pages/StudentApprovalsPage'))
const TeacherRosterPage = lazy(() => import('../pages/TeacherRosterPage'))
const TeacherAttendancePage = lazy(() => import('../pages/TeacherAttendancePage'))
const AccountActivationPage = lazy(() => import('../pages/AccountActivationPage'))
const OfficialDocumentVerifyPage = lazy(() => import('../pages/OfficialDocumentVerifyPage'))
const ClassroomRepairReportPage = lazy(() => import('../pages/ClassroomRepairReportPage'))
const VenueDisplayPage = lazy(() => import('../pages/VenueDisplayPage'))
const SsoCallbackPage = lazy(() => import('../pages/SsoCallbackPage'))
const SsoBindPage = lazy(() => import('../pages/SsoBindPage'))
const AppShell = lazy(() => import('../layout/AppShell'))

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      staleTime: 30_000,
      retry: 1,
      refetchOnWindowFocus: false,
    },
  },
})

function ProtectedRoute() {
  const token = useAuthStore((state) => state.token)
  const location = useLocation()
  if (!token) return <Navigate to={`/login?redirect=${encodeURIComponent(location.pathname + location.search)}`} replace />
  return <AppShell />
}

function SessionExpiryBridge() {
  const navigate = useNavigate()
  useEffect(() => {
    const onExpired = () => navigate(`/login?redirect=${encodeURIComponent(location.pathname + location.search + location.hash)}`, { replace: true })
    window.addEventListener('mingxu-session-expired', onExpired)
    return () => window.removeEventListener('mingxu-session-expired', onExpired)
  }, [navigate])
  return null
}

function AppRoutes() {
  return (
    <Suspense fallback={<div style={{ maxWidth: 1180, margin: '64px auto', padding: 24 }}><Skeleton active paragraph={{ rows: 8 }} /></div>}>
      <SessionExpiryBridge />
      <Routes>
        <Route path="/login" element={<LoginPage />} />
        <Route path="/sso/callback" element={<SsoCallbackPage />} />
        <Route path="/sso/bind" element={<SsoBindPage />} />
        <Route path="/activate" element={<AccountActivationPage />} />
        <Route path="/verify/:verificationCode?" element={<OfficialDocumentVerifyPage />} />
        <Route path="/classroom-repairs/report/:classroomId" element={<ClassroomRepairReportPage />} />
        <Route path="/venue-display/:type/:id" element={<VenueDisplayPage />} />
        <Route element={<ProtectedRoute />}>
          <Route path="/dashboard" element={<DashboardPage />} />
          <Route path="/account" element={<AccountPage />} />
          <Route path="/users" element={<UsersPage />} />
          <Route path="/notifications" element={<NotificationsPage />} />
          <Route path="/my-timetable" element={<MyTimetablePage />} />
          <Route path="/exams" element={<ExamsPage />} />
          <Route path="/grades" element={<StudentGradesPage />} />
          <Route path="/warnings" element={<StudentWarningsPage />} />
          <Route path="/my-profile" element={<StudentProfilePage />} />
          <Route path="/my-attendance" element={<StudentAttendancePage />} />
          <Route path="/course-selections" element={<CourseSelectionPage />} />
          <Route path="/my-curriculum" element={<StudentCurriculumPage />} />
          <Route path="/academic-overview" element={<AcademicOverviewPage />} />
          <Route path="/free-classrooms" element={<FreeClassroomsPage />} />
          <Route path="/student-status-changes" element={<StudentStatusChangesPage />} />
          <Route path="/official-documents" element={<OfficialDocumentsPage />} />
          <Route path="/graduation-audits" element={<GraduationAuditPage />} />
          <Route path="/tuition" element={<TuitionPage />} />
          <Route path="/academic-calendar" element={<AcademicCalendarPage />} />
          <Route path="/other-exams" element={<OtherExamsPage />} />
          <Route path="/makeup-exams" element={<MakeupExamsPage />} />
          <Route path="/evaluations" element={<EvaluationsPage />} />
          <Route path="/academic-planning" element={<AcademicPlanningPage />} />
          <Route path="/physical-fitness" element={<PhysicalFitnessPage />} />
          <Route path="/degree-awards" element={<DegreeAwardsPage />} />
          <Route path="/graduation-clearance" element={<GraduationClearancePage />} />
          <Route path="/experiments" element={<StudentExperimentsPage />} />
          <Route path="/experiment-grades" element={<StudentExperimentGradesPage />} />
          <Route path="/campus-registrations" element={<CampusRegistrationsPage />} />
          <Route path="/approvals" element={<StudentApprovalsPage />} />
          <Route path="/teacher-roster" element={<TeacherRosterPage />} />
          <Route path="/teacher-attendance" element={<TeacherAttendancePage />} />
          <Route path="/" element={<Navigate to="/dashboard" replace />} />
        </Route>
        <Route path="*" element={<Navigate to="/dashboard" replace />} />
      </Routes>
    </Suspense>
  )
}

export default function App() {
  return (
    <ConfigProvider
      locale={zhCN}
      theme={{
        token: {
          colorPrimary: '#284583',
          colorSuccess: '#087f73',
          colorWarning: '#b8781d',
          colorError: '#b42318',
          colorInfo: '#476282',
          colorText: '#182033',
          colorBgLayout: '#f2f4f7',
          borderRadius: 7,
          fontFamily: '"Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif',
        },
        components: {
          Button: { controlHeightLG: 44, fontWeight: 650 },
          Input: { controlHeightLG: 44 },
          Layout: { headerBg: '#ffffff', siderBg: '#162858' },
          Menu: { darkItemBg: '#162858', darkItemSelectedBg: '#284583', darkItemSelectedColor: '#ffffff' },
        },
      }}
    >
      <AntdApp>
        <QueryClientProvider client={queryClient}>
          <BrowserRouter basename="/next"><AppRoutes /></BrowserRouter>
        </QueryClientProvider>
      </AntdApp>
    </ConfigProvider>
  )
}