FacebookViewer

A mini-project to practice Passport/Node.js

##Objectives Create a simple app that shows Facebook Profile information.

You can use the passport-facebook GitHub repo for a guide.

##Step 1: Set up passport, passport-facebook, express Set up a server.js file and include these npm dependencies:

• express
• express-session
• passport
• passport-facebook

Go over to the Facebook Developer Portal and Add a New App. Call it whatever you'd like.

Now let's put in the code necessary to get our authentication working:

• Create your express app, have it listen to a port that works for you
• Require passport and the passport FacebookStrategy
• Include the session middleware

app.use(session({secret: 'some-random-string'}))

• Include the passport.initialize middleware

app.use(passport.initialize())

• Include the passport.session middleware

app.use(passport.session())

• Define the FacebookStrategy

passport.use(new FacebookStrategy({
  clientID: '<your_client_id>',
  clientSecret: '<your_client_secret>',
  callbackURL: 'http://localhost:3000/auth/facebook/callback'
}, function(token, refreshToken, profile, done) {
  return done(null, profile);
}));

##Step 2: Define your auth endpoints Create two routes that will handle your Facebook auth.

####GET /auth/facebook This route simply implements the passport.authenticate method, passing 'facebook' as the parameter.

####GET /auth/facebook/callback This route needs to pass the passport.authenticate method again, except we also need to pass in an object that passes the successRedirect and failureRedirect paths.

##Step 3: Create the deserialize/serializer methods on passport. Since you won't be doing anything further than just passing objects to/from passport and the session, we just need bare bones methods here:

passport.serializeUser(function(user, done) {
  done(null, user);
});
 
passport.deserializeUser(function(obj, done) {
  done(null, obj);
});

###Step 4: Create viewer endpoint Now we're going to create an endpoint that returns the current logged in user's Facebook profile data.

####GET /me Create this route in your server.js that returns the user's Facebook profile data. The data is stored in req.user if you've set everything up correctly. Return a JSON representation of this data at the /me endpoint.

Use Postman or the browser to verify that you can in fact get the JSON data from the /me endpoint.