F_A_8_Test_app/src/router.js

import React, { Suspense, lazy } from "react";
import { Switch, Route } from "react-router-dom";

import * as routes from './constants/routes';

import Header from "./containers/Header";
import landingPage from './components/public-components/landingPage';
import Footer from './components/public-components/footer';
import PrivateRouter from './components/common/privateRouter';
import PrivateAdminRouter from './components/common/privateAdminRouter';

import Spinner from "./components/common/spinner";

const notFound = lazy(() => import("./components/public-components/notFound"));
// const permissionDenied = lazy(() => import("./components/public-components/permissionDenied"));

const homePage = lazy(() => import("./components/user-components/homePage"));
const signInPage = lazy(() => import("./containers/auth/SignInPage"));
const signUpPage = lazy(() => import("./containers/auth/SignUpPage"));
const createTestForm = lazy(() => import("./components/user-components/admin-components/createTestForm"));

class Router extends React.Component {

    checkUserInLocalStorage = () => {
        // localStorage.getItem(token)
    }

    getSomeUsers() {
        fetch('localhost:3306')
            .then(res => console.log(res))
            .catch(exc => console.warn(exc.message))
    }

    componentDidMount() {
        this.getSomeUsers();
    }

    render() {
        return (
            <div className="app">
                <Header />
                <Suspense fallback={<Spinner />}>
                    <Switch>
                        <Route path={routes.LANDING} exact component={landingPage} />
                        <Route path={routes.SIGN_IN} exact component={signInPage} />
                        <Route path={routes.SIGN_UP} exact component={signUpPage} />
                        <Route path={routes.HOME} exact component={homePage} />

                        <PrivateRouter path={routes.HOME} exact component={homePage} />
                        <PrivateRouter path={routes.TESTS} exact component={null} />
                        <PrivateRouter path={routes.CATEGORIES} exact component={null} />
                        <PrivateRouter path={routes.PROFILE} exact component={null} />

                        <PrivateAdminRouter path={routes.CREATE_TEST} exact component={createTestForm} />
                        <PrivateAdminRouter path={routes.CREATE_CATEGORY} exact component={null} />
                        <PrivateAdminRouter path={routes.DELETE_USER} exact component={null} />

                        {/* <Route path={routes.PERMISSON_DENIED} exact component={permissionDenied} /> */}
                        <Route component={notFound} />
                    </Switch>
                </Suspense>
                <Footer />
            </div>
        )
    }
}

export default Router;