npm package: @rownd/react
Description: Simply run `npm install @rownd/react` or `yarn add @rownd/react`.
Latest version: 2.9.0

#### README's for [Next](https://github.com/rownd/react/tree/main/packages/next) and [Remix](https://github.com/rownd/react/tree/main/packages/remix).

# React

## Installation

Simply run `npm install @rownd/react` or `yarn add @rownd/react`.

## Usage

### React

The library provides a React provider and hook for the Rownd browser API.

In your app's main entrypoint, add the Rownd provider, likely before other providers:

```jsx
import React from 'react',
import ReactDOM from 'react-dom';
import { RowndProvider } from '@rownd/react';
import App from './App';

ReactDOM.render(
  <RowndProvider
    appKey="<your app key>"
  >
    <App />
  </RowndProvider>,
  document.getElementById('root')
);
```

{% hint style="warning" %}
The Rownd React SDK automatically injects the Rownd Hub snippet into your React application, so you should _not_ manually include the Hub snippet in your HTML page. Doing so will produce unexpected results.
{% endhint %}

### RowndProvider props

- `appKey` (required): This is the key generated by the [Rownd dashboard](https://app.rownd.io).
- `postLoginRedirect` (optional): Where the browser should redirect the user after a successful sign-in. If not supplied, the user will remain on the same page.
- `rootOrigin` (optional): If you're using Rownd across multiple domains (e.g., `rownd.io` and `app.rownd.io`), set this to the "root" _origin_ (e.g., https://rownd.io).

### Provider props

* `appKey` (required): This is the key generated by the [Rownd dashboard](https://app.rownd.io).
* `postLoginRedirect` (optional): Where the browser should redirect the user after a successful sign-in. If not supplied, the user will remain on the same page.
* `rootOrigin` (optional): If you're using Rownd across multiple domains (e.g., `rownd.io` and `app.rownd.io`), set this to the "root" _origin_ (e.g., https://rownd.io).

Later on within your app's components, you can use the Rownd hook to access the Rownd browser API:

```jsx
import React from 'react';
import { useRownd } from '@rownd/react';

export default function MyProtectedComponent(props) {
  const { is_authenticated, user, requestSignIn, is_initializing } = useRownd();

  useEffect(() => {
    if (!is_authenticated && !is_initializing) {
      requestSignIn();
    }
  }, [is_authenticated, is_initializing]);

  return (
    <div>
      {is_authenticated ? (
        <div>
          <h1>Welcome {user.data.first_name}</h1>
          <h2>Email:{user.data.email}</h2>
          <button onClick={() => getAccessToken()}>Get access token</button>
        </div>
      ) : (
        <div>
          <h1>Please sign in to continue</h1>
        </div>
      )}
    </div>
  );
}
```

### Usage with redux, etc

Often, sending and receiving data from your server will rely on the Rownd access token as a means of authenticating the user within your back-end (see our [Node.js SDK](node.js.md) as an example of this). Many React apps leverage Redux or similar technologies to manage an app's global state.

The key here is to call Rownd's `getAccessToken({ waitForToken: true })` method when calling your own authenticated APIs. For example, if you're using [axios](https://npmjs.com/package/axios), you'd likely set up an interceptor that looks something like this:

```javascript
// api-client.js

import axios from 'axios';

let getAccessToken;

axios.interceptors.request.use(async (config) => {
  if (!getAccessToken) {
    return config;
  }

  if (config.skipAuth || !config.url.startsWith('/api')) {
    return config;
  }

  const accessToken = await getAccessToken({ waitForToken: true });

  config.headers.common.Authorization = `Bearer ${accessToken}`;
  return config;
});

export function setAccessTokenHelper(fn) {
  getAccessToken = fn;
}

export default axios;
```

Here's another example, this time using [ky](https://npmjs.com/package/ky):

```javascript
// api-client.js

import ky from 'ky';

let getAccessToken;

ky.extend({
  hooks: {
    beforeRequest: [
      // Auto-refresh tokens
      async (request) => {
        if (!getAccessToken) {
          return;
        }

        if (request.skipAuth || !request.url.startsWith('/api')) {
          return;
        }

        const accessToken = await getAccessToken({ waitForToken: true });

        request.headers.set(
          'Authorization',
          `Bearer ${tokenResp.access_token}`
        );
      },
    ],
  },
});

function setAccessTokenHelper(fn) {
  getAccessToken = fn;
}

export { api, setAccessTokenHelper };
```

In both of the cases above, our async actions would use these instances of axios or ky to make requests back to the server, but before any of those fire, we need to set the access token helper from our React app like this:

```javascript
// AppWrapper.jsx

import { useRownd } from '@rownd/react';
import { setAccessTokenHelper } from './api-client';
import App from './app';

export default function MyReactAppWrapper() {
  const { getAccessToken } = useRownd();

  useEffect(() => {
    setAccessTokenHelper(getAccessToken);
  }, [getAccessToken]);

  return <App />;
}
```

That's one way to solve this problem. Another might be to wrap the redux provider in your own component and simply pass the `getAccessToken` function down into the store during initialization. If you come up with a better mousetrap here, let us know!

## API reference

Most API methods are made available via the Rownd Provider and its associated `useRownd` React hook. Unless otherwise noted, we're assuming that you're using hooks.

#### requestSignIn()

Trigger the Rownd sign in dialog

```javascript
const { requestSignIn } = useRownd();

requestSignIn({
  auto_sign_in: false, // optional
  identifier: 'me@company.com' || '+19105551212', // optional
});
```

- `auto_sign_in: boolean` - when `true`, automatically trigger a sign-in attempt _if_ `identifier` is included or an email address or phone number has already been set in the user data.
- `identifier: string` - an email address or phone number (in E164 format) to which a verification message may be sent. If the Rownd app is configured to allow unverified users, then sign-in will complete without verification if the user has not signed in previously.

#### signOut()

Sign out the user and clear their profile, returning them to a completely unauthenticated state.

```javascript
const { signOut } = useRownd();
signOut();
```

#### **getAccessToken()**

Retrieves the active, valid access token for the current user.&#x20;

```javascript
const { getAccessToken } = useRownd();

let accessToken = await getAccessToken({
  waitForToken: false,
});
```

- `waitForToken: boolean` - when `true`, if no access token is present or if it's expired, the promise will not resolve until a valid token is available. While unlikely, this could result in waiting forever.

**is_initializing**

`is_initializing` will be `true` until the Hub has fully loaded, recalled its state, and resolved the current user's authentication status. This usually takes only a few milliseconds, but if you make decisions that depend on the `is_authenticated` flag while `is_initializing` is still `true`, your code/logic may not work as you expect.

```javascript
const { is_initializing } = useRownd();

if (is_initializing) {
  // return loading state or null
}
```

#### is_authenticated

Indicates whether the current user is signed in or not.

```javascript
const { is_authenticated } = useRownd();

return (
  <>
    {is_authenticated && <ProtectedRoute />}
    {!is_authenticated && <PublicRoute />}
  </>
);
```

#### access_token

Represents the current access token for the user.

```javascript
const { access_token } = useRownd();

useEffect(() => {
    axios({
        method: 'post',
        url: '/api/sessions'
        headers: {
            authorization: `Bearer ${access_token}`
        }
    }).then(console.log);
}, [access_token]);
```

#### user

Represents information about the current user, specifically their profile information. In the example below, we use the existing data to display the current value of `first_name` in a form field, update a local copy of that data as the user changes it, and then save the changes to Rownd once the user submits the form.

```javascript
const { user } = useRownd();

const [profile, setProfile] = useState(user.data);

return (
  <form onSubmit={() => user.set(profile)}>
    <label htmlFor="first_name">
      <input
        id="first_name"
        type="text"
        value={profile?.first_name}
        onInput={(evt) =>
          setProfile({ ...profile, first_name: evt.target.value })
        }
      />
    </label>
    <button type="submit">Save</button>
  </form>
);
```

**Merge data into the user profile**

```javascript
const { user } = useRownd();
user.set({
  first_name: 'Alice',
  last_name: 'Ranier',
});
```

Set a specific field in the user profile

```javascript
const { user } = useRownd();
user.setValue('first_name', 'Alice');
```