How to use passport-github - 10 common examples

*/
    this.passport.serializeUser(function(user, done) {
      done(null, user._id);
    });

    this.passport.deserializeUser(function(user_id, done) {
      // The `done` callback here accepts err and user,
      // which are just what findOne will pass.
      User.findOne({'_id': mongoose.Types.ObjectId(user_id)}, done);
    });

    /**
     * Use Github Auth Strategy
     * @link https://github.com/jaredhanson/passport-github/blob/master/examples/login/app.js#L26
     */
    this.passport.use(new GitHubStrategy({
        clientID: process.env.GITHUB_CLIENT_ID,
        clientSecret: process.env.GITHUB_CLIENT_SECRET,
        callbackURL: process.env.GITHUB_CALLBACK_URL
      },
      function(accessToken, refreshToken, profile, done) {

        // Code to verify user. Return the user object
        // if verified.

        // Try to find a user with this GitHub ID.
        User.findOne({'githubInfo.id': profile._json.id}, function(err, user){

          // If we could not find a user, create one.
          if (user === null){

            console.log("Creating new user");

// Error handling.
  if (process.env.NODE_ENV !== 'production' && process.env.NODE_ENV !== 'staging') {
    app.use(errorHandler());
  }

  // Forest
  forest(app);

  // Cors.
  app.use(cors());

  const verify = (accessToken, tokenSecret, profile, done) => done(null, accessToken, { tokenSecret, profile });

  if (has(config, 'github.clientID') && has(config, 'github.clientSecret')) {
    passport.use(new GitHubStrategy(get(config, 'github'), verify));
  } else {
    console.warn('Configuration missing for passport GitHubStrategy, skipping.');
  }
  if (has(config, 'meetup.clientID') && has(config, 'meetup.clientSecret')) {
    passport.use(new MeetupStrategy(get(config, 'meetup'), verify));
  } else {
    console.warn('Configuration missing for passport MeetupStrategy, skipping.');
  }
  if (has(config, 'twitter.consumerKey') && has(config, 'twitter.consumerSecret')) {
    passport.use(new TwitterStrategy(get(config, 'twitter'), verify));
  } else {
    console.warn('Configuration missing for passport TwitterStrategy, skipping.');
  }

  app.use(cookieParser());

user.tokens.push({ kind: mappings.providerField, accessToken });
  user.profile.name = user.profile.name || objectByString(profile, mappings.name);
  user.profile.picture = user.profile.picture || objectByString(profile, mappings.picture);
  user.profile.gender = user.profile.gender || objectByString(profile, mappings.gender);
  user.profile.location = user.profile.location || objectByString(profile, mappings.location);
  user.profile.website = user.profile.website || objectByString(profile, mappings.website);
  user.save((err) => {
    // console.info(err);
    return done(err, user, { message : `${mappings.provider} account has been linked.` });
  });
}

/**
 * Sign in with GitHub.
 */
passport.use(new GithubStrategy({
  clientID: config.get('passport.github.clientID'),
  clientSecret: config.get('passport.github.clientSecret'),
  callbackURL: config.get('passport.github.callbackURL'),
  passReqToCallback: true
}, (...args) => {
  const mappings = {
    provider: 'GitHub',
    providerField: 'github',
    id: 'id',
    name: 'displayName',
    email: '_json.email',
    picture: '_json.avatar_url',
    location: '_json.location',
    website: '_json.blog',
  };
  return oauth(mappings, ...args);

const initPassport = app => {
  // Serialize sessions
  passport.serializeUser(function(user, done) {
    // user is the profile in github strategy
    done(null, user);
  });

  // Deserialize sessions
  passport.deserializeUser(function(user, done) {
    done(null, user);
  });

  passport.use(
    new Strategy(
      {
        clientID: config.github.clientID,
        clientSecret: config.github.clientSecret,
        callbackURL: config.github.callbackURL,
        passReqToCallback: true
      },
      function(req, accessToken, refreshToken, profile, cb) {
        // console.log('accessToken', accessToken)
        // console.log('refreshToken', refreshToken)
        // console.log('profile', profile)
        var providerData = profile._json;
        providerData.accessToken = accessToken;
        providerData.refreshToken = refreshToken;

        cb(null, providerData);
      }

app.use(expressSession({ secret: "keyboard cat", resave: true, saveUninitialized: true }));
app.use(cookieParser());

//setup email templates
app.engine('html', require('ejs').renderFile);
app.set('view engine', 'html');
app.set('view engine', 'ejs');

//Setup Passport
// Initialize Passport and restore authentication state, if any, from the
// session.
app.use(passport.initialize());
app.use(passport.session());

passport.use(
	new GitHubStrategy(
		{
			clientID: process.env.SCOREBOARD_GH_APPID,
			clientSecret: process.env.SCOREBOARD_GH_SECRET,
			callbackURL: "/auth/github/callback",
		},
		function(accessToken, refreshToken, profile, cb) {
			const { displayName, username } = profile;
			let email = "";
			if ("emails" in profile && profile.emails.length) email = profile.emails[0].value;
			db.gitHubUser(username, email, displayName).then(user => {
				return cb(null, user);
			});

			//
		}
	)

// check whether the strategy has already been set up
    if (this.isGitHubStrategySetup) {
      throw new Error('GitHubStrategy has already been set up');
    }

    const { configManager } = this.crowi;
    const isGitHubEnabled = configManager.getConfig('crowi', 'security:passport-github:isEnabled');

    // when disabled
    if (!isGitHubEnabled) {
      return;
    }

    debug('GitHubStrategy: setting up..');
    passport.use(
      new GitHubStrategy(
        {
          clientID: configManager.getConfig('crowi', 'security:passport-github:clientId'),
          clientSecret: configManager.getConfig('crowi', 'security:passport-github:clientSecret'),
          callbackURL: (this.crowi.appService.getSiteUrl() != null)
            ? urljoin(this.crowi.appService.getSiteUrl(), '/passport/github/callback') // auto-generated with v3.2.4 and above
            : configManager.getConfig('crowi', 'security:passport-github:callbackUrl'), // DEPRECATED: backward compatible with v3.2.3 and below
          skipUserProfile: false,
        },
        (accessToken, refreshToken, profile, done) => {
          if (profile) {
            return done(null, profile);
          }

          return done(null, false);
        },
      ),

// Ex: user.providers[user.currentProvider].name
        user.currentProvider = 'local';

        user.save(function (err) {
          if (err) {
            logger.error('PassportJS LocalStrategy save error: ' + err.toString());
          }
          return done(err, user);
        });

      });
    }
  ));

  // Use github strategy
  passport.use(new GitHubStrategy({

      clientID: config.get('github').clientID,
      clientSecret: config.get('github').clientSecret,
      callbackURL: config.get('github').callbackURL

    },
    function (accessToken, refreshToken, profile, done) {

      var email = profile.emails[0].value;

      var provider = {
        name: profile.displayName,
        username: profile.username,
        profile: profile._json
      };

email: data.email,
  lastLogin: Date.now(),

  [providerName]: {
    id: String(data.id),
    accessToken: data.accessToken
  }
})

// init the passport junk
const strategyConfig = {
  clientID: config[providerName].id,
  clientSecret: config[providerName].secret,
  callbackURL: `/auth/${providerName}/callback`
}
const strategy = new Strategy(strategyConfig, findOrCreateUser(dataToUser))
passport.use(strategy)

// init the router
const start = passport.authenticate(providerName)
const callback = passport.authenticate(providerName, {
  failureRedirect: '/login'
})

const router = Router({ mergeParams: true })
router.get(`/auth/${providerName}/start`, redirect.pre, start)
router.get(`/auth/${providerName}/callback`, callback, redirect.post)

export default router

constructor(req, config)
    {
        super(req, config);

        if (!config.properties) {
            config.properties = {};
        }
        if (!config.properties.id) {
            config.properties.id = "id";
        }

        // passport
        this.githubStrategy = new GithubStrategy({
            clientID: config.clientID,
            clientSecret: config.clientSecret,
            callbackURL: config.callbackURL,
            passReqToCallback: true
        }, auth.buildPassportCallback(config, this));

        req.passport.use(this.githubStrategy);
    }

import app from '~/';
import { UserSchema, User } from '~/model/user';

// Passport setup
// TODO: Serialize User for sessions
passport.serializeUser(function(user, done) {
  done(null, user);
});

// TODO: Deserialize User for sessions
passport.deserializeUser(function(obj, done) {
  done(null, obj);
});

// Define GitHub Login Strategy
passport.use(new GitHubStrategy({
    clientID: app.config.github.clientID,
    clientSecret: app.config.github.secret,
    callbackURL: app.config.github.callback,
  }, (accessToken, refreshToken, profile, done) => {
    User.updateOrCreate(accessToken, profile)
      .then(user => {
        done(null, user);
      }, err => {
        done(err);
      });
  }
));

app.use(passport.initialize());
app.use(passport.session());