passport.js

const GoogleStrategy = require("passport-google-oauth20").Strategy;
const GithubStrategy = require("passport-github2").Strategy;
const FacebookStrategy = require("passport-facebook").Strategy;
const passport = require("passport");
require("dotenv").config();

const GOOGLE_CLIENT_ID = process.env.GOOGLE_CLIENT_IDS;
const GOOGLE_CLIENT_SECRET = process.env.GOOGLE_CLIENT_SECRETS;

const GITHUB_CLIENT_ID = process.env.GITHUB_CLIENT_IDS;
const GITHUB_CLIENT_SECRET = process.env.GITHUB_CLIENT_SECRETS;

const FACEBOOK_APP_ID = process.env.FACEBOOK_APP_IDS;
const FACEBOOK_APP_SECRET = process.env.FACEBOOK_APP_SECRETS;

passport.use(
  new GoogleStrategy(
    {
      clientID: GOOGLE_CLIENT_ID,
      clientSecret: GOOGLE_CLIENT_SECRET,
      callbackURL: "/auth/google/callback",
    },
    function (accessToken, refreshToken, profile, done) {
      done(null, profile);
    }
  )
);

passport.use(
  new GithubStrategy(
    {
      clientID: GITHUB_CLIENT_ID,
      clientSecret: GITHUB_CLIENT_SECRET,
      callbackURL: "/auth/github/callback",
    },
    function (accessToken, refreshToken, profile, done) {
      done(null, profile);
    }
  )
);

passport.use(
  new FacebookStrategy(
    {
      clientID: FACEBOOK_APP_ID,
      clientSecret: FACEBOOK_APP_SECRET,
      callbackURL: "/auth/facebook/callback",
    },
    function (accessToken, refreshToken, profile, done) {
      done(null, profile);
    }
  )
);

passport.serializeUser((user, done) => {
  done(null, user);
});

passport.deserializeUser((user, done) => {
  done(null, user);
});