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@civic/auth

v0.1.4

Published

- [Civic Auth Client SDK](#civic-auth-client-sdk) - [Quick Start](#quick-start) - [npm](#npm) - [yarn](#yarn) - [pnpm](#pnpm) - [bun](#bun) - [Integration](#integration) - [React](#react) - [Usage](#usage) - [The User Button](#th

Downloads

2,830

Readme

Civic Auth Client SDK

Civic Auth offers a simple, flexible, and fast way to integrate authentication into your applications.

You can find the full, official documentation here, with a quick-start version in this README.

Quick Start

Sign up for Civic Auth in less than a minute at auth.civic.com to get your Client ID.

Install the library in your app using your installer of choice:

npm

npm install @civic/auth

yarn

yarn add @civic/auth

pnpm

pnpm install @civic/auth

bun

bun add @civic/auth

Integration

Choose your framework for instructions on how to integrate Civic Auth into your application.

For integrating in other environments using any OIDC or OAuth 2.0-compliant client libraries, see here.

React

Integrate Civic Auth into your React application with ease, just wrap your app with the Civic Auth provider and add your Client ID (provided after you sign up). A working example is available in our github examples repo.

import { CivicAuthProvider, UserButton } from "@civic/auth/react";

function App({ children }) {
  return (
    <CivicAuthProvider clientId="YOUR CLIENT ID">
      <UserButton />
      {children}
    </CivicAuthProvider>
  )
}

Usage

The User Button

The Civic Auth SDK comes with a multi-purpose styled component called the UserButton

import { UserButton, CivicAuthProvider } from '@civic/auth/react';

export function TitleBar() {
  return (
    <div className="flex justify-between items-center">
      <h1>My App</h1>
      <UserButton />
    </div>
  );
};

function App({ children }) {
  return (
    <CivicAuthProvider clientId="YOUR CLIENT ID">
      <TitleBar />
    </CivicAuthProvider>
  )
}

This component is context-dependent. If the user is logged in, it will show their profile picture and name. If the user is not logged in, it will show a Log In button.

Getting User Information on the Frontend

Use the Civic Auth SDK to retrieve user information on the frontend.

import { useUser } from '@civic/auth/react';

export function MyComponent() {
  const { user } = useUser();
  
  if (!user) return <div>User not logged in</div>
  
  return <div>Hello { user.name }!</div>
}

We use name as an example here, but you can call any user object property from the user fields schema, as shown below.

Advanced Configuration

Civic Auth is a "low-code" solution, so all configuration takes place via the dashboard. Changes you make there will be updated automatically in your integration without any code changes. The only required parameter you need to provide is the client ID.

The integration provides additional run-time settings and hooks that you can use to customize the library's integration with your own app. If you need any of these, you can add them to the CivicAuthProvider as follows:

<CivicAuthProvider
  clientId="YOUR CLIENT ID"
  ...other configuration
>

See below for the list of all configuration options

Display Mode

The display mode indicates where the Civic login UI will be displayed. The following display modes are supported:

  • iframe (default): the UI loads in an iframe that shows in an overlay on top of the existing page content
  • redirect: the UI redirects the current URL to a Civic login screen, then redirects back to your site when login is complete
  • new_tab: the UI opens in a new tab or popup window (depending on browser preferences), and after login is complete, the tab or popup closes to return the user to your site

API

User Context

The full user context object (provided by useUser) looks like this:

{ 
  user: User | null;
  // these are the OAuth tokens created during authentication
  idToken?: string;
  accessToken?: string;
  refreshToken?: string;
  forwardedTokens?: ForwardedTokens;
  // functions and flags for UI and signIn/signOut
  isLoading: boolean;
  error: Error | null;
  signIn: (displayMode?: DisplayMode) => Promise&#x3C;void>;
  signOut: () => Promise&#x3C;void>;
}

User

The User object looks like this:

type BaseUser = {
  id: string;
  email?: string;
  name?: string;
  picture?: string;
  given_name?: string;
  family_name?: string;
  updated_at?: Date;
};

type User<T extends UnknownObject = EmptyObject> = BaseUser & T;

Where you can pass extra user attributes to the object that you know will be present in user claims, e.g.

const UserWithNickName = User<{ nickname: string }>;

Field descriptions:

Base User Fields

Token Fields

Typically developers will not need to interact with the token fields, which are used only for advanced use cases.

Forwarded Tokens

Use forwardedTokens if you need to make requests to the source provider, such as find out provider-specific information.


An example would be, if a user logged in via Google, using the Google forwarded token to query the Google Groups that the user is a member of.

For example:

const googleAccessToken = user.forwardedTokens?.google?.accessToken;

Embedded Login Iframe

If you want to have the Login screen open directly on a page without the user having to click on button, you can import the CivicAuthIframeContainer component and use it along with the AuthProvider option iframeMode={"embedded"}

You just need to ensure that the CivicAuthIframeContainer is a child under a CivicAuthProvider

import { CivicAuthIframeContainer } from "@civic/auth/react";


const Login = () => {
  return (
      <div class="login-container">
        <CivicAuthIframeContainer />
      </div>
  );
};

const App = () => {
  return (
      <CivicAuthProvider
        clientId={"YOUR CLIENT ID"}
        iframeMode={"embedded"}
      >
        <Login />
      </CivicAuthProvider>
  );
}

Next.JS

Quick Start

Integrate Civic Auth into your Next.js application using the following steps (a working example is available in our github examples repo):

1. Add the Civic Auth Plugin

This is where you give your app the Client ID provided when you sign up at auth.civic.com.

The defaults should work out of the box for most customers, but if you want to configure your app, see below for details.

import { createCivicAuthPlugin } from "@civic/auth/nextjs"
import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  /* config options here */
};

const withCivicAuth = createCivicAuthPlugin({
  clientId: 'YOUR CLIENT ID'
});

export default withCivicAuth(nextConfig)

2. Create an API Route

This is where your app will handle login and logout requests.

Create this file at the following path:

src/app/api/auth/[...civicauth]/route.ts

import { handler } from '@civic/auth/nextjs'

export const GET = handler()

These steps apply to the App Router. If you are using the Pages Router, please contact us for integration steps.

3. Middleware

Middleware is used to protect your backend routes, server components and server actions from unauthenticated requests.

Using the Civic Auth middleware ensures that only logged-in users have access to secure parts of your service.

import { authMiddleware } from '@civic/auth/nextjs/middleware'

export default authMiddleware()

export const config = {
  // include the paths you wish to secure here
  matcher: [ '/api/:path*', '/admin/:path*'  ] 
}

Middleware Chaining

If you are already using middleware in your Next.js app, then you can chain them with Civic Auth as follows:

import { auth } from '@civic/auth/nextjs'
import { NextRequest, NextResponse } from "next/server";

const withCivicAuth = auth()

const otherMiddleware = (request: NextRequest) => {
    console.log('my middleware')
    return NextResponse.next()
}

export default withCivicAuth(otherMiddleware)

4. Frontend Integration

Add the Civic Auth context to your app to give your frontend access to the logged-in user.

import { CivicAuthProvider } from "@civic/auth/nextjs";

function Layout({ children }) {
  return (
    // ... the rest of your app layout
    <CivicAuthProvider>
      {children}
    </CivicAuthProvider>
  )
}

Unlike the pure React integration, you do not have to add your client ID again here!

Usage

Getting User Information on the Frontend

Next.JS client components can use the Civic Auth React tools to obtain user information as well as display convenient login, and logout buttons. See the React Usage page for details.

Getting User Information on the Backend

Retrieve user information on backend code, such as in React Server Components, React Server Actions, or api routes using getUser:

import { getUser } from '@civic/auth/nextjs';

const user = await getUser();

For example, in a NextJS Server Component:

import { getUser } from '@civic/auth/nextjs';

export async function MyServerComponent() {
  const user = await getUser();
  
  if (!user) return <div>User not logged in</div>
  
  return <div>Hello { user.name }!</div>
}

The name property is used as an example here, check out the React Usage page to see the entire basic user object structure.

Advanced Configuration

Civic Auth is a "low-code" solution, so most of the configuration takes place via the dashboard. Changes you make there will be updated automatically in your integration without any code changes. The only required parameter you need to provide is the client ID.

The integration also offers the ability customize the library according to the needs of your Next.js app. For example, to restrict authentication checks to specific pages and routes in your app. You can do so inside next.config.js as follows:

const withCivicAuth = createCivicAuthPlugin({
  clientId: 'YOUR CLIENT ID'
  ...other config
});

export default withCivicAuth(nextConfig) // your next config here

Here are the available configuration options: