import Providers from "@/context/providers";
import { BrowserRouter, Routes, Route } from "react-router-dom";
import Wrapper from "@/components/Wrapper";
import Sidebar from "@/components/navigation/Sidebar";

import { isDesktop, isMobile } from "react-device-detect";
import Statusbar from "./components/Statusbar";
import Bottombar from "./components/navigation/Bottombar";
import { Suspense, lazy } from "react";
import { Redirect } from "./components/navigation/Redirect";
import { cn } from "./lib/utils";
import { isPWA } from "./utils/isPWA";
import ProtectedRoute from "@/components/auth/ProtectedRoute";
import useSWR from "swr";
import { FrigateConfig } from "./types/frigateConfig";
import ActivityIndicator from "@/components/indicators/activity-indicator";
import { isRedirectingToLogin } from "@/api/auth-redirect";

const Live = lazy(() => import("@/pages/Live"));
const Events = lazy(() => import("@/pages/Events"));
const Explore = lazy(() => import("@/pages/Explore"));
const Exports = lazy(() => import("@/pages/Exports"));
const ConfigEditor = lazy(() => import("@/pages/ConfigEditor"));
const System = lazy(() => import("@/pages/System"));
const Settings = lazy(() => import("@/pages/Settings"));
const UIPlayground = lazy(() => import("@/pages/UIPlayground"));
const FaceLibrary = lazy(() => import("@/pages/FaceLibrary"));
const Classification = lazy(() => import("@/pages/ClassificationModel"));
const Chat = lazy(() => import("@/pages/Chat"));
const Logs = lazy(() => import("@/pages/Logs"));
const AccessDenied = lazy(() => import("@/pages/AccessDenied"));
const Replay = lazy(() => import("@/pages/Replay"));

function App() {
  const { data: config } = useSWR<FrigateConfig>("config", {
    revalidateOnFocus: false,
  });

  return (
    <Providers>
      <BrowserRouter basename={window.baseUrl}>
        <Wrapper>
          {config?.safe_mode ? <SafeAppView /> : <DefaultAppView />}
        </Wrapper>
      </BrowserRouter>
    </Providers>
  );
}

function DefaultAppView() {
  const { data: config } = useSWR<FrigateConfig>("config", {
    revalidateOnFocus: false,
  });

  // Compute required roles for main routes, ensuring we have config first
  // to prevent race condition where custom roles are temporarily unavailable
  const mainRouteRoles = config?.auth?.roles
    ? Object.keys(config.auth.roles)
    : undefined;

  // Show loading indicator during redirect to prevent React from attempting to render
  // lazy components, which would cause error #426 (suspension during synchronous navigation)
  if (isRedirectingToLogin()) {
    return (
      <div className="size-full overflow-hidden">
        <ActivityIndicator className="absolute left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2" />
      </div>
    );
  }

  return (
    <div className="size-full overflow-hidden">
      {isDesktop && <Sidebar />}
      {isDesktop && <Statusbar />}
      {isMobile && <Bottombar />}
      <div
        id="pageRoot"
        className={cn(
          "absolute right-0 top-0 overflow-hidden",
          isMobile
            ? isPWA
              ? "bottom-[calc(3rem+env(safe-area-inset-bottom))] left-0 pt-[env(safe-area-inset-top)] md:bottom-[calc(4rem+env(safe-area-inset-bottom))] landscape:pl-[env(safe-area-inset-left)] landscape:pr-[env(safe-area-inset-right)]"
              : "bottom-12 left-0 md:bottom-16"
            : "bottom-8 left-[52px]",
        )}
      >
        <Suspense
          fallback={
            <ActivityIndicator className="absolute left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2" />
          }
        >
          <Routes>
            <Route element={<ProtectedRoute requiredRoles={mainRouteRoles} />}>
              <Route index element={<Live />} />
              <Route path="/review" element={<Events />} />
              <Route path="/explore" element={<Explore />} />
              <Route path="/export" element={<Exports />} />
              <Route path="/settings" element={<Settings />} />
            </Route>
            <Route element={<ProtectedRoute requiredRoles={["admin"]} />}>
              <Route path="/system" element={<System />} />
              <Route path="/config" element={<ConfigEditor />} />
              <Route path="/logs" element={<Logs />} />
              <Route path="/faces" element={<FaceLibrary />} />
              <Route path="/classification" element={<Classification />} />
              <Route path="/chat" element={<Chat />} />
              <Route path="/playground" element={<UIPlayground />} />{" "}
              <Route path="/replay" element={<Replay />} />{" "}
            </Route>
            <Route path="/unauthorized" element={<AccessDenied />} />
            <Route path="*" element={<Redirect to="/" />} />
          </Routes>
        </Suspense>
      </div>
    </div>
  );
}

function SafeAppView() {
  return (
    <div className="size-full overflow-hidden">
      <div
        id="pageRoot"
        className={cn("absolute bottom-0 left-0 right-0 top-0 overflow-hidden")}
      >
        <Suspense>
          <ConfigEditor />
        </Suspense>
      </div>
    </div>
  );
}

export default App;
