museum/server/auth/providers/facebook.ts

import { Strategy, StrategyOption, AuthenticateOptions, Profile } from 'passport-facebook';

import { Router } from 'express'
import passport from 'passport'

import genericStrategy from '../strategy'

const strategyOptions: StrategyOption = {
  clientID: process.env.FACEBOOK_CLIENT_ID as string,
  clientSecret: process.env.FACEBOOK_CLIENT_SECRET as string,
  callbackURL: '/auth/facebook/redirect',
  profileFields: ['id', 'displayName', 'picture.type(large)', 'email']
}

export function facebookStrategy() {
  return new Strategy(strategyOptions, genericStrategy<Profile>('facebook'));
}

export const facebookRouter = Router()

const facebookAuthenticateOptions: AuthenticateOptions = {
  authType: 'rerequest', scope: ['email']
}

facebookRouter.get('/facebook', passport.authenticate('facebook', facebookAuthenticateOptions));
facebookRouter.get('/facebook/redirect',
  passport.authenticate('facebook', { successRedirect: '/museo', failureRedirect: '/' }));