frontend/src/App.js

import React, { useEffect } from "react";
import {
  HashRouter as Router,
  Routes,
  Route,
  useSearchParams,
  useLocation,
} from "react-router-dom";
import { ThemeProvider } from "@mui/material/styles";
import { Box, CssBaseline } from "@mui/material";
import Navigation from "./components/Navigation/Navigation";
import LeaderboardPage from "./pages/LeaderboardPage/LeaderboardPage";
import AddModelPage from "./pages/AddModelPage/AddModelPage";
import QuotePage from "./pages/QuotePage/QuotePage";
import VoteModelPage from "./pages/VoteModelPage/VoteModelPage";
import Footer from "./components/Footer/Footer";
import getTheme from "./config/theme";
import { useThemeMode } from "./hooks/useThemeMode";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import LeaderboardProvider from "./pages/LeaderboardPage/components/Leaderboard/context/LeaderboardContext";

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

function UrlHandler() {
  const location = useLocation();
  const [searchParams] = useSearchParams();

  // Synchroniser l'URL avec la page parente HF
  useEffect(() => {
    // Vérifier si nous sommes dans un iframe HF Space
    const isHFSpace = window.location !== window.parent.location;
    if (!isHFSpace) return;

    // Sync query and hash from this embedded app to the parent page URL
    const queryString = window.location.search;
    const hash = window.location.hash;

    // HF Spaces' special message type to update the query string and the hash in the parent page URL
    window.parent.postMessage(
      {
        queryString,
        hash,
      },
      "https://huggingface.co"
    );
  }, [location, searchParams]);

  // Read the updated hash reactively
  useEffect(() => {
    const handleHashChange = (event) => {
      console.log("hash change event", event);
    };

    window.addEventListener("hashchange", handleHashChange);
    return () => window.removeEventListener("hashchange", handleHashChange);
  }, []);

  return null;
}

function App() {
  const { mode, toggleTheme } = useThemeMode();
  const theme = getTheme(mode);

  return (
    <div
      className="App"
      style={{
        height: "100%",
        width: "100%",
        WebkitOverflowScrolling: "touch",
        overflow: "auto",
      }}
    >
      <QueryClientProvider client={queryClient}>
        <ThemeProvider theme={theme}>
          <CssBaseline />
          <Router>
            <LeaderboardProvider>
              <UrlHandler />
              <Box
                sx={{
                  minHeight: "100vh",
                  display: "flex",
                  flexDirection: "column",
                  bgcolor: "background.default",
                  color: "text.primary",
                }}
              >
                <Navigation onToggleTheme={toggleTheme} mode={mode} />
                <Box
                  sx={{
                    flex: 1,
                    display: "flex",
                    flexDirection: "column",
                    width: "100%",
                    px: 4,
                    pb: 4,
                  }}
                >
                  <Routes>
                    <Route path="/" element={<LeaderboardPage />} />
                    <Route path="/add" element={<AddModelPage />} />
                    <Route path="/quote" element={<QuotePage />} />
                    <Route path="/vote" element={<VoteModelPage />} />
                  </Routes>
                </Box>
                <Footer />
              </Box>
            </LeaderboardProvider>
          </Router>
        </ThemeProvider>
      </QueryClientProvider>
    </div>
  );
}

export default App;