passport.js

var LocalStrategy = require('passport-local').Strategy;
var FacebookStrategy = require('passport-facebook').Strategy;


var User = require('./database-mongo/user');
var configAuth = require('./auth');

module.exports = function(passport) {


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

  passport.deserializeUser(function(id, done){
    User.findById(id, function(err, user){
      done(err, user);
    });
  });


  passport.use('local-signup', new LocalStrategy({
    usernameField: 'email',
    passwordField: 'password',
    passReqToCallback: true
  },
  function(req, email, password, done){
    process.nextTick(function(){
      User.findOne({'local.username': email}, function(err, user){
        if(err)
          return done(err);
        if(user){
          return done(null, false, req.flash('signupMessage', 'That email already taken'));
        } else {
          var newUser = new User();
          newUser.local.username = email;
          newUser.local.password = newUser.generateHash(password);

          newUser.save(function(err){
            if(err)
              throw err;
            return done(null, newUser);
          })
        }
      })

    });
  }));

  passport.use('local-login', new LocalStrategy({
      usernameField: 'email',
      passwordField: 'password',
      passReqToCallback: true
    },
    function(req, email, password, done){
      process.nextTick(function(){
        User.findOne({ 'local.username': email}, function(err, user){
          if(err)
            return done(err);
          if(!user)
            return done(null, false, req.flash('loginMessage', 'No User found'));
          if(!user.validPassword(password)){
            return done(null, false, req.flash('loginMessage', 'invalid password'));
          }
          return done(null, user);

        });
      });
    }
  ));


  passport.use(new FacebookStrategy({
      clientID: configAuth.facebookAuth.clientID,
      clientSecret: configAuth.facebookAuth.clientSecret,
      callbackURL: configAuth.facebookAuth.callbackURL
    },
    function(accessToken, refreshToken, profile, done) {
        process.nextTick(function(){
          User.findOne({'facebook.id': profile.id}, function(err, user){
            if(err)
              return done(err);
            if(user)
              return done(null, user);
            else {
              var newUser = new User();
              newUser.facebook.id = profile.id;
              newUser.facebook.token = accessToken;
              newUser.facebook.name = profile.name.givenName + ' ' + profile.name.familyName;
              newUser.facebook.email = profile.emails[0].value;

              newUser.save(function(err){
                if(err)
                  throw err;
                return done(null, newUser);
              })
              console.log(profile);
            }
          });
        });
      }

  ));
};