Tutorial: Integrate TideCloak into an Existing React.js app

This tutorial walks you through setting up the TideCloak SDK in a React application to handle secure authentication.

1) Prerequisites

Before you begin, ensure you have the following:

React 18 or later
Node.js ≥18.17.0
A running TideCloak server you have admin control over
IGA enabled realm
A registered client in your realm with default user contexts approved and committed
A valid TideCloak adapter JSON file (e.g., tidecloakAdapter.json)

2) Install `@tidecloak/react`

Add the TideCloak React SDK to your project:

NPM
Yarn

npm install @tidecloak/react

yarn add @tidecloak/react

This bundle provides:

<TideCloakContextProvider> - application-level context
useTideCloak() hook - access tokens and auth actions
<Authenticated> / <Unauthenticated> - UI guards
doEncrypt() / doDecrypt() - tag-based encryption/decryption

Note: Installing this package automatically adds a silent-check-sso.html file to your public directory. This file is required for silent SSO checks; if it doesn't exist, create it manually at public/silent-check-sso.html with the following content, otherwise the app will break:
<html>
  <body>
    <script>parent.postMessage(location.href, location.origin)</script>
  </body>
</html>

3) Initialize the Provider

Wrap your app's root with <TideCloakContextProvider> to enable authentication context throughout the component tree.

If you're using React Router, your setup might look like this:

import React from 'react';
import { BrowserRouter, Routes, Route } from 'react-router-dom';
import { TideCloakContextProvider } from '@tidecloak/react';
import adapter from '../tidecloakAdapter.json';
import Home from './pages/Home';
import RedirectPage from './pages/auth/RedirectPage';

export default function App() {
  return (
    <TideCloakContextProvider config={adapter}>
      <BrowserRouter>
        <Routes>
          <Route path="/" element={<Home />} />
          <Route path="/auth/redirect" element={<RedirectPage />} />
          {/* Add additional routes here */}
        </Routes>
      </BrowserRouter>
    </TideCloakContextProvider>
  );
}

⚠️ If you don't define a route at /auth/redirect, and you're using the default redirectUri, your app will break after login/logout. Either create this route or override redirectUri in the provider config.

If you override the redirectUri, you must ensure that the custom path exists in your router. Otherwise, the app will redirect to a non-existent route and fail.

4) Redirect URI Handling

TideCloak supports an optional redirectUri config field. This defines where the user is sent after login/logout.

If omitted, it defaults to:

`${window.location.origin}/auth/redirect`

Example: If your app runs at http://localhost:3000, then by default the redirect path is http://localhost:3000/auth/redirect.

You must create this route if you use the default, or explicitly override it:

<TideCloakContextProvider config={{ ...adapter, redirectUri: 'https://yourapp.com/auth/callback' }}>
  <YourApp />
</TideCloakContextProvider>

⚠️ If you override the redirectUri, make sure the specified path exists in your app. Missing this route will cause failed redirects.

Example: Redirect Handling Page

import { useEffect } from 'react';
import { useNavigate } from 'react-router-dom';
import { useTideCloak } from '@tidecloak/react';

export default function RedirectPage() {
  const { authenticated, isInitializing, logout } = useTideCloak();
  const navigate = useNavigate();

  useEffect(() => {
    const params = new URLSearchParams(window.location.search);
    if (params.get("auth") === "failed") {
      sessionStorage.setItem("tokenExpired", "true");
      logout();
    }
  }, []);

  useEffect(() => {
    if (!isInitializing) {
      navigate(authenticated ? '/home' : '/');
    }
  }, [authenticated, isInitializing, navigate]);

  return (
    <div style={{
      minHeight: '100vh',
      display: 'flex',
      alignItems: 'center',
      justifyContent: 'center',
      fontSize: '1rem',
      color: '#555',
    }}>
      <p>Waiting for authentication...</p>
    </div>
  );
}

Description: This page helps finalize the login or logout flow, and also reacts to token expiration events that may have triggered a redirect. It's required if you're using the default redirectUri. If you override the redirect URI, the file is optional-but the route for the redirect must still exist in your app.

5) Using the `useTideCloak` Hook

Use this hook anywhere in your component tree to manage authentication:

import { useTideCloak } from '@tidecloak/react';

function Header() {
  const {
    authenticated,
    login,
    logout,
    token,
    tokenExp,
    refreshToken,
    getValueFromToken,
    getValueFromIdToken,
    hasRealmRole,
    hasClientRole,
    doEncrypt,
    doDecrypt,
  } = useTideCloak();

  return (
    <header>
      {authenticated ? (
        <>
          <span>Logged in</span>
          <button onClick={logout}>Log Out</button>
        </>
      ) : (
        <button onClick={login}>Log In</button>
      )}
      {token && (
        <small>Expires at {new Date(tokenExp * 1000).toLocaleTimeString()}</small>
      )}
    </header>
  );
}

Name	Type	Description
`authenticated`	`boolean`	Whether the user is logged in.
`login()` / `logout()`	`() => void`	Trigger the login or logout flows.
`token`, `tokenExp`	`string`, `number`	Access token and its expiration timestamp.
Automatic token refresh	built-in	Tokens refresh silently on expiration-no manual setup needed.
`refreshToken()`	`() => Promise<boolean>`	Force a silent token renewal.
`getValueFromToken(key)`	`(key: string) => any`	Read a custom claim from the access token.
`getValueFromIdToken(key)`	`(key: string) => any`	Read a custom claim from the ID token.
`hasRealmRole(role)`	`(role: string) => boolean`	Check a realm-level role.
`hasClientRole(role, client?)`	`(role: string, client?: string) => boolean`	Check a client-level role; defaults to your app's client ID if omitted.
`doEncrypt(data)` / `doDecrypt(data)`	`(data: any) => Promise<any>`	Encrypt or decrypt payloads via TideCloak's built-in service.

6) Guard Components

Use these components to show or hide content based on authentication state:

import { Authenticated, Unauthenticated } from '@tidecloak/react';

function Dashboard() {
  return (
    <>
      <Authenticated>
        <h1>Dashboard</h1>
        {/* Protected widgets */}
      </Authenticated>

      <Unauthenticated>
        <p>Please log in to access the dashboard.</p>
      </Unauthenticated>
    </>
  );
}

<Authenticated>: renders children only when authenticated === true
<Unauthenticated>: renders children only when authenticated === false

7) Encrypting & Decrypting Data

Protect sensitive payloads using tag-based encryption/decryption:

// Encrypt:
const encryptedArray = await doEncrypt([
  { data: { email: 'user@example.com' }, tags: ['email'] },
]);

// Decrypt:
const decryptedArray = await doDecrypt([
  { encrypted: encryptedArray[0], tags: ['email'] },
]);

Important: The data property must be either a string or a Uint8Array (raw bytes). When you encrypt a string, decryption returns a string. When you encrypt a Uint8Array, decryption returns a Uint8Array.

Valid example:

// Before testing below, ensure you've set up the necessary roles:
const multi_encrypted_addresses = await doEncrypt([
  {
    data: "10 Smith Street",
    tags: ["street"]
  },
  {
    data: "Southport",
    tags: ["suburb"]
  },
  {
    data: "20 James Street - Burleigh Heads",
    tags: ["street", "suburb"]
  }
]);

Invalid (will fail):

// Prepare data for encryption
const dataToEncrypt = {
  title: noteData.title,
  content: noteData.content
};

// Encrypt the note data using TideCloak (this will error)
const encryptedArray = await doEncrypt([{ data: dataToEncrypt, tags: ['note'] }]);

Permissions: Encryption requires _tide_<tag>.selfencrypt; decryption requires _tide_<tag>.selfdecrypt.

Order guarantee: Output preserves input order.

8) Advanced & Best Practices

Auto-Refresh: built-in, no manual timer setup required
Error Handling: check initError from useTideCloak
Custom Claims: access token fields with getValueFromToken() / getValueFromIdToken()
Role-Based UI: combine hasRealmRole, hasClientRole, and guard components
Lazy Initialization: optionally wrap <TideCloakContextProvider> around only protected routes

✅ Run & Test

npm start

Your React app is now connected with TideCloak authentication.

1) Prerequisites​

2) Install @tidecloak/react​

3) Initialize the Provider​

4) Redirect URI Handling​

Example: Redirect Handling Page​

5) Using the useTideCloak Hook​

6) Guard Components​

7) Encrypting & Decrypting Data​

Valid example:​

Invalid (will fail):​

8) Advanced & Best Practices​

✅ Run & Test​