Use Grindery Login

A React context provider and a hook to interact with user authentication session in React applications.

GrinderyLoginProvider

The component defines a GrinderyLoginContext which is a context that provides access to user-related information and actions, including:

• The authentication token
• User ID
• User address
• Functions to connect (login) and disconnect (logout) a user

The GrinderyLoginProvider uses this context to hold and manage the state of these values. The component provides a mechanism for a user to login (connect) and logout (disconnect) with methods that redirect the user to different URLs depending on their environment (staging, localhost, production).

• On connecting, it redirects the user to the appropriate login URL with a redirect_uri parameter set to the current URL.
• On disconnecting, it posts a message to clear the authentication session and resets user-related state to null.

Additionally, GrinderyLoginProvider listens for messages posted from a hidden iframe sourced from the login URL, handling updates to the user's authentication session. Any such updates are used to set the context's state values.

The GrinderyLoginProvider component also wraps its children, thus providing the context values to all child components.

A custom hook, useGrinderyLogin, is also exported for easy access to the context.

How to use

Install library

yarn add use-grindery-login

or

npm install use-grindery-login

Add Provider component to your React app

import GrinderyLoginProvider from 'use-grindery-login';

const App = () => {
  return (
    <GrinderyLoginProvider>{/* your app components */}</GrinderyLoginProvider>
  );
};

Use hook in your components to access user context

import { useGrinderLogin } from 'use-grindery-login';

const AuthenticationButton = () => {
  const { connect, disconnect, token, user, address } = useGrinderyLogin();

  if (token) {
    return <button onClick={disconnect}>Disconnect</button>;
  }

  return <button onClick={connect}>Connect</button>;
};

Development

See DEVELOPMENT.md file.

License

MIT License