An authentication plugin for server.js. So far it handles Github and Twitter login.

import server from "server";
import auth from "@server/auth";

server.plugins.push(auth);

server(ctx => `Hello ${ctx.user ? ctx.user.name : "Anonymous"}`);

We are going to see how to setup Github Login. First install server and this plugin:

npm i server @server/auth

Setup your app in Github and fill in the secrets in your .env file:

GITHUB_ID=
GITHUB_SECRET=

Include the plugin in your main app alongside with a small route with some helper just to see the data:

import server from "server";
import auth from "@server/auth";

server.plugins.push(auth);

const home = ctx => {
  console.log(ctx.user);
  return `Hello ${ctx.user ? ctx.user.name : "Anonymous"}`;
};

server(get("/", home));

Finally start your server with node ., and visit http://localhost:3000/login/github to login into your app. The homepage will show your name, and the terminal all of your info.

The default shown in the Getting Started is the setup just for login. When you have a DB you need to write some extra methods to connect Auth to your specific database data and to the session/cookies. This is achieved with these (all of them are async):

• findUser(profile) => user: given the profile retrieved from the social network, this function will return the user from your database. You can make the match however you prefer; through the profile.email, or profile.username, or profile.id depending on your needs and whether you have one or multiple providers.
• createUser(profile) => user: given the profile retrieved from the social network, it creates a user in the database and returns this newly created user.
• serialize(user) => id: given the user from your database, extract a uniquely identifying ID. This is usually something like the user.id, user._id with Mongoose, or similar. That ID will be stored in the session store for later usage.
• deserialize(id) => user: given the id extracted from the previous serialization method, this method finds the full user from your database.

import server from "server";
import auth from "@server/auth";

const { get } = server.router;

// Add it to the list of plugins
server.plugins.push(auth);

// Define these 3-4 methods to access your local DB:
const findUser = profile => { ... };
const createUser = profile => { ... };
const serialize = user => user.id;
const deserialize = id => { ... };

// Initialize server.js as usual, passing the options for auth
server(
  { auth: { findUser, createUser, serialize, deserialize } },
  get('/', ctx => `Hello ${ctx.user ? ctx.user.name : 'Anonymous'}`),
);