auth.js

var passport          = require('passport');
var mongoose          = require('mongoose');
var GitHubStrategy    = require('passport-github').Strategy;
var MediaWikiStrategy = require('passport-mediawiki-oauth').OAuthStrategy;

var User          = mongoose.model('Users');
var Notifications = mongoose.model('Notifications');

var core = require('./core.js');


module.exports = function(app, passport) {

  // used to serialize the user for the session
  passport.serializeUser(function(user, done) {
    done(null, user.id);
  });
  // used to deserialize the user
  passport.deserializeUser(function(id, done) {
    User.findById(id, function(err, user) {
      done(err, user);
    });
  });

  // WIKIMEDIA
  if(global.config.wm_clientId !== undefined && global.config.wm_secret !== undefined) {
    passport.use(new MediaWikiStrategy({
      consumerKey       : global.config.wm_clientId,
      consumerSecret    : global.config.wm_secret,
      callbackURL       : 'http://challenge.rosedu.org/auth/gerrit',
      baseURL           : 'https://wikitech.wikimedia.org/',
      passReqToCallback : true

    }, function(req, token, refreshToken, profile, done) {
      if (req.user) {
        User.findOne({'user_id': req.user.user_id}, function(err, user) {
          if (err) return done(err, {});
          if (user) {
            user.wikimedia.id    = profile.id;
            user.wikimedia.token = token;
            user.wikimedia.email = profile._json.email;
            user.wikimedia.name  = profile._json.username;

            user.save(function(err) {
              if (err) console.log('Could not login with wikimedia');
              return done(null, user);
            });
          }
          return done(err, user);
        });
      } else {
        return done();
      }
    }
  ));
  }

  // GITHUB
  if(global.config.gh_clientId !== undefined && global.config.gh_secret !== undefined) {
    passport.use(new GitHubStrategy({
      clientID          : global.config.gh_clientId || ' ',
      clientSecret      : global.config.gh_secret || ' ',
      passReqToCallback : true

    }, function(req, token, refreshToken, profile, done) {
      process.nextTick(function() {

        User.findOne({'user_id': profile.id}, function(err, user) {
          if (err) return done(null, false, req.flash('error', err))

          if (user != null) {
            var conditions = {'user_name': profile.username};
            var update = {$set: {
              'last_seen':     Date.now(),
              'user_fullname': profile.displayName,
              'user_email':    (profile.emails ? profile.emails[0].value : null),
              'followers_no':  profile._json.followers,
              'following_no':  profile._json.following,
              'location':      profile._json.location,
            }};
            User.update(conditions, update, function (err, num) {
              console.log("* User " + user.user_name + " logged in at " + Date.now());
            });

          } else {
            // Send welcome notification
            new Notifications({
              'src':    null,
              'dest':   profile.username,
              'type':   "welcome",
              'link':   "/faq"
            }).save(function(err, todo, count) {
              if (err) console.log("[ERR] Notification not sent.");
            });

            // Import data from github
            user = new User ({
              'user_id':       profile.id,
              'user_name':     profile.username,
              'user_fullname': profile.displayName,
              'user_email':    (profile.emails ? profile.emails[0].value : null),
              'avatar_url':    profile._json.avatar_url,
              'followers_no':  profile._json.followers,
              'following_no':  profile._json.following,
              'location':      profile._json.location,
              'join_github':   profile._json.created_at
            }).save (function (err, user, count) {
              console.log("* User " + user.user_name + " added.");
              // send welcome email
              core.send_mail(user.user_email, 'welcome');
            });
          }

          // Return one happy user
          return done(null, user)
        })
      })
    }))
  }

}