import { lazy, Suspense } from "react";
import { BrowserRouter, Navigate, Route, Routes } from "react-router-dom";

import { RequireAuth } from "./auth/require-auth";
import { LoginPage } from "./auth/login-page";
import { AppShell } from "./shell/app-shell";
import { ObjectsPage } from "./objects/objects-page";
import { ObjectDetail } from "./objects/object-detail";
import { SearchPage } from "./search/search-page";
import { SelectSearchPrompt } from "./search/select-search-prompt";
import { VocabulariesPage } from "./vocab/vocabularies-page";
import { VocabularyTerms } from "./vocab/vocabulary-terms";
import { SelectVocabularyPrompt } from "./vocab/select-vocabulary-prompt";
import { AuthoritiesPage } from "./authorities/authorities-page";

const ObjectNewPage = lazy(() =>
  import("./objects/object-new-page").then((m) => ({ default: m.ObjectNewPage })),
);

const ObjectEditForm = lazy(() =>
  import("./objects/object-edit-form").then((m) => ({ default: m.ObjectEditForm })),
);

const FieldsPage = lazy(() =>
  import("./fields/fields-page").then((m) => ({ default: m.FieldsPage })),
);

function FormFallback() {
  return <div role="status" className="p-4 text-sm text-neutral-400">Loading…</div>;
}

export function App() {
  return (
    <BrowserRouter>
      <Routes>
        <Route path="/login" element={<LoginPage />} />
        <Route element={<RequireAuth />}>
          <Route element={<AppShell />}>
            <Route
              path="/objects/new"
              element={
                <Suspense fallback={<FormFallback />}>
                  <ObjectNewPage />
                </Suspense>
              }
            />
            <Route path="/objects" element={<ObjectsPage />}>
              <Route path=":id" element={<ObjectDetail />} />
              <Route
                path=":id/edit"
                element={
                  <Suspense fallback={<FormFallback />}>
                    <ObjectEditForm />
                  </Suspense>
                }
              />
            </Route>
            <Route path="/vocabularies" element={<VocabulariesPage />}>
              <Route index element={<SelectVocabularyPrompt />} />
              <Route path=":id" element={<VocabularyTerms />} />
            </Route>
            <Route path="/search" element={<SearchPage />}>
              <Route index element={<SelectSearchPrompt />} />
              <Route path=":id" element={<ObjectDetail />} />
            </Route>
            <Route path="/authorities" element={<Navigate to="/authorities/person" replace />} />
            <Route path="/authorities/:kind" element={<AuthoritiesPage />} />
            <Route
              path="/fields"
              element={
                <Suspense fallback={<FormFallback />}>
                  <FieldsPage />
                </Suspense>
              }
            />
            <Route path="/" element={<Navigate to="/objects" replace />} />
          </Route>
        </Route>
        <Route path="*" element={<Navigate to="/objects" replace />} />
      </Routes>
    </BrowserRouter>
  );
}