Auth0 Solid Start (SSR compatible)

This is a fully functional library to add Auth0 OAuth Authentication to a Solid-Start App.

You'll need to sign up and create an Auth0 Application to use this library. The credentials are stored in an .env file (see .env.example).

This work is inspired by

• Ryan Turnquist solid-auth0
• Sergio Xalambrí remix-auth-oauth2

How it works

This library is intended to be used on root level of your Solid-Start App. It provides an authentication context for the entire App. Users/passwords etc. are all stored in Auth0, we use the Universal Login Experience to authenticate users and get a code, which we can exchange for an access_token. The access_token is a valid JWT token and can be used to authenticate requests to your API / GraphQL /etc.

The callback URL is set to /auth/callback, so you need to create an API route in src/routes/auth/callback.js/ts. The code can be found below.

flowchart
    A[Browser] --> B[Initial Render/SSR]
    B{Valid Session Cookie exists?} --> |Yes| C
    C[Set Signals & Render App]
    B --> |No| D[Redirect to Auth0 Universal Login]
    D --> E[Callback to `/auth/callback` with `code` & `state`]
    E --> F[Exchange `code` for `access_token`]
    F --> G[Get User Info with access_token]
    G --> H[Set Signals & Session Cookie]
    H --> C[Render App]

Multi Tenant Mode

Multi Tenant Mode can be used with Auth0 Organizations. You'll have to pass an organization object into the Auth0 context with an id. We recommend using the same schema as Auth0.

Set VITE_AUTH0_REWRITE_REDIRECT=true in .env

Usage

Environment Variables

See .env.example

• VITE_AUTH0_REWRITE_REDIRECT requires the Auth0 Organization setup
• VITE_AUTH0_OFFLINE_ACCESS requires the Auth0 API to be configured with offline access
• VITE_AUTH0_LOGOUT_URL the logout url (a server-side route, ie http://localhost:8080/auth/logout)

vite.config.ts/js

There's an issue with vite throwing process is undefined errors when the session is loaded on the client. To fix this, add the following to your vite.config.ts/js:

define: {
    'process.env': process.env
  },

root.jsx / .tsx

In root.tsx to enforce authentication on all pages:

import { Show, Suspense } from 'solid-js'
import { isServer } from 'solid-js/web'
import { ErrorBoundary, FileRoutes, Routes } from 'solid-start'
import { Auth0, useAuth0 } from '@zentered/auth0-solid-start'

const GraphQLProvider = () => {} // let's assume you want to authenticate graphql requests with your JWT

function Login(props) {
  return (
    <div>
      <p>Sign in</p>
      <div>
        <div>
          <a onClick={() => props.auth0.authorize()} type="button">
            Log In
          </a>
        </div>
      </div>
    </div>
  )
}

function SiteRequiresAuth(props) {
  const auth0 = useAuth0()

  if (!auth0.isAuthenticated() && !isServer) {
    auth0.login()
  }

  return (
    <>
      <Show when={auth0.isInitialized()}>
        <Show when={auth0.isAuthenticated()} fallback={<Login auth0={auth0} />}>
          <Show when={auth0.accessToken()}>
            <GraphQLProvider auth0={auth0}>{props.children}</GraphQLProvider>
          </Show>
        </Show>
      </Show>
    </>
  )
}

export default function Root() {
  return (
    // ...
    <Suspense>
      <ErrorBoundary>
        <Auth0
          domain={import.meta.env.VITE_AUTH0_DOMAIN}
          clientId={import.meta.env.VITE_AUTH0_CLIENT_ID}
          audience={import.meta.env.VITE_AUTH0_AUDIENCE}
          redirectUri={import.meta.env.VITE_AUTH0_REDIRECT_URI}
          logoutUrl={`${import.meta.env.VITE_BASE_URL}/auth/logout`}
          // organization={organization} // uncomment if you use auth0 organizations
        >
          <SiteRequiresAuth>
            <Routes>
              <FileRoutes />
            </Routes>
          </SiteRequiresAuth>
        </Auth0>
      </ErrorBoundary>
    </Suspense>
    // ...
  )
}

With Organization Invitation

If you use Auth0 Organizations, you can pass through the invitation, organization and organization_name query params to the Auth0 Universal Login Experience. This will load the sign-up instead of the login form:

// root.jsx/tsx
const [searchParams] = useSearchParams()

if (searchParams.invitation) {
  auth0.setInvitation(
    searchParams.invitation,
    searchParams.organization,
    searchParams.organization_name
  )
}

Logout

The logout happens in 3 steps:

1. User clicks "Sign out" and starts the process
2. logout function on the Auth0 Provider is triggered that generates an auth0 logout url
3. Auth0 redirects back to the "logout url" which clears the session.

There are two parts: the logout function in the auth0 provider and the "api" route (ie /auth/logout), see below.

In any component/page where you want the "Sign out" link:

import { useAuth0 } from '@zentered/auth0-solid-start'
import { Link } from '@solidjs/router'

export default function Component() {
  const auth0 = useAuth0()
  const [, logout] = createRouteAction(async () => {
    await auth0.logout()
  })

  <Link
    href="#"
    class={`button`}
    onClick={() => logout()}
  >
    Sign Out
  </Link>
}

API

Callback

routes/auth/callback.js|ts:

import fn from '@zentered/auth0-solid-start/api/callback'

export async function GET({ request }) {
  return fn(request)
}

Logout API

routes/auth/logout.js|ts:

import fn from '@zentered/auth0-solid-start/api/logout'

export function GET({ request }) {
  return fn(request)
}

Development

You can fork/clone this repository and link it into your working project with pnpm link:

cd auth0-solid-start
pnpm link

cd ../your-project
pnpm link @zentered/auth0-solid-start ../../auth0-solid-start

Instead of using the npm version you're now working with a local copy. Changes in the auth0-solid-start folder should restart the app.