Build base web

virtweb_frontend/src/App.tsx

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+import React from "react";
+import "./App.css";
+import {
+  Route,
+  RouterProvider,
+  createBrowserRouter,
+  createRoutesFromElements,
+} from "react-router-dom";
+import { NotFoundRoute } from "./routes/NotFound";
+import { OIDCCbRoute } from "./routes/auth/OIDCCbRoute";
+import { BaseLoginPage } from "./widgets/BaseLoginPage";
+import { BaseAuthenticatedPage } from "./widgets/BaseAuthenticatedPage";
+import { LoginRoute } from "./routes/auth/LoginRoute";
+import { AuthApi } from "./api/AuthApi";
+
+interface AuthContext {
+  signedIn: boolean;
+  setSignedIn: (signedIn: boolean) => void;
+}
+
+const AuthContextK = React.createContext<AuthContext | null>(null);
+
+export function App() {
+  const [signedIn, setSignedIn] = React.useState(AuthApi.SignedIn);
+
+  const context: AuthContext = {
+    signedIn: signedIn,
+    setSignedIn: (s) => setSignedIn(s),
+  };
+
+  const router = createBrowserRouter(
+    createRoutesFromElements(
+      signedIn ? (
+        <Route path="*" element={<BaseAuthenticatedPage />}>
+          <Route path="*" element={<NotFoundRoute />} />
+        </Route>
+      ) : (
+        <Route path="*" element={<BaseLoginPage />}>
+          <Route path="" element={<LoginRoute />} />
+          <Route path="oidc_cb" element={<OIDCCbRoute />} />
+          <Route path="*" element={<NotFoundRoute />} />
+        </Route>
+      )
+    )
+  );
+
+  return (
+    <AuthContextK.Provider value={context}>
+      <RouterProvider router={router} />
+    </AuthContextK.Provider>
+  );
+}
+
+export function useAuth(): AuthContext {
+  return React.useContext(AuthContextK)!;
+}