import * as React from 'react';
import { createRoot } from 'react-dom/client';
import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
import {
  BrowserRouter,
  Routes,
  Route,
  useNavigate,
  useLocation,
  matchPath
} from "react-router-dom";
import {
  Box,
  CssBaseline,
  CircularProgress
} from "@mui/material";
import Home from './Home';
import FetchRequests from './FetchRequest/FetchRequestCreate';
import FetchRequestDetail from './FetchRequest/FetchRequestDetail';
import Expense from './Expense/Expense';
import Reports from './Reports/Reports';
import { AppProvider, useAppContext, Admin, ProfileRoutes } from '../react-openapi';
import { AuthProvider, AuthPage, useAuth, ProfileCreate, ProfileEdit, ProfileView } from "../react-auth";
import Header from './Header';
import Footer from './Footer';
import AppTheme from './shared-theme/AppTheme';
import { ToastProvider } from './ui/Toast';
import { specConfiguration } from './openapi-config';

const queryClient = new QueryClient();

const rootElement = document.getElementById('root');
const root = createRoot(rootElement);

// Wire profile components from react-auth into the spec-driven admin
specConfiguration.profileComponents = {
  create: ProfileCreate,
  edit: ProfileEdit,
  view: ProfileView,
};

function LoginPage() {
  const { login, register, loading, error, currentUser } = useAuth();
  const navigate = useNavigate();
  return (
    <AuthPage
      mode="login"
      onBack={() => navigate("/")}
      onSwitchMode={() => navigate("/register")}
      login={login}
      register={register}
      loading={loading}
      error={error}
      currentUser={currentUser}
    />
  );
}

function RegisterPage() {
  const { login, register, loading, error, currentUser } = useAuth();
  const navigate = useNavigate();
  return (
    <AuthPage
      mode="register"
      onBack={() => navigate("/")}
      onSwitchMode={() => navigate("/login")}
      login={login}
      register={register}
      loading={loading}
      error={error}
      currentUser={currentUser}
    />
  );
}

const routerMapping = [
  { path: "/", component: Home, headerTitle: "Home" },
  { path: "/home", component: Home, headerTitle: "Home" },
  { path: "/login", component: LoginPage, headerTitle: "Login" },
  { path: "/register", component: RegisterPage, headerTitle: "Register" },
  { path: "/fetch-requests", component: FetchRequests, headerTitle: "Fetch Requests" },
  { path: "/fetch-requests/:id", component: FetchRequestDetail, headerTitle: "Fetch Request" },
  { path: "/expenses", component: Expense, headerTitle: "Expenses" },
  { path: "/reports", component: Reports, headerTitle: "Reports" },
  { path: "/admin/*", component: Admin, headerTitle: "Admin" },
  { path: "/profile/*", component: ProfileRoutes, headerTitle: "Profile" },
];

/** Reads authConfig from AppProvider context and passes it to AuthProvider. */
function AppContent() {
  const { authConfig, loading } = useAppContext();
  const navigate = useNavigate();
  const location = useLocation();

  React.useEffect(() => {
    const matched = routerMapping.find((route) =>
      matchPath({ path: route.path, end: false }, location.pathname),
    );
    document.title = matched
      ? `${matched.headerTitle} · Khata`
      : "Khata — Financial Ledger";
  }, [location.pathname]);

  if (loading) {
    return (
      <Box sx={{ display: "flex", justifyContent: "center", alignItems: "center", minHeight: "100vh" }}>
        <CircularProgress />
      </Box>
    );
  }

  return (
    <AuthProvider authConfig={authConfig} onUnauthorized={() => navigate("/login")}>
      <AppTheme>
        <CssBaseline enableColorScheme />
        <ToastProvider>
          <Box sx={{ display: "flex", flexDirection: "column", minHeight: "100vh" }}>
            <Header routerMapping={routerMapping} />

            <Box
              component="main"
              key={location.pathname}
              sx={{
                flexGrow: 1,
                width: "100%",
                animation: "fadeIn 220ms ease-out",
                "@keyframes fadeIn": {
                  from: { opacity: 0, transform: "translateY(4px)" },
                  to: { opacity: 1, transform: "translateY(0)" },
                },
              }}
            >
              <Routes>
                {routerMapping.map(({ path, component: Component }) => (
                  <Route
                    key={path}
                    path={path}
                    element={<Component basePath={path.replace(/\/\*$/, "")} />}
                  />
                ))}
              </Routes>
            </Box>

            <Footer />
          </Box>
        </ToastProvider>
      </AppTheme>
    </AuthProvider>
  );
}

function AppWithAuth() {
  const navigate = useNavigate();
  return (
    <AppProvider specConfiguration={specConfiguration} onUnauthorized={() => navigate("/login")}>
      <AppContent />
    </AppProvider>
  );
}

root.render(
  <QueryClientProvider client={queryClient}>
  <BrowserRouter>
    <AppWithAuth />
  </BrowserRouter>
  </QueryClientProvider>
);