passport.js

// api/services/passport.js

var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var bcrypt = require('bcrypt-nodejs');

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

passport.deserializeUser(function(id, next) {
  User.findOne(id).done(next);
});

// Put your Passport config logic here
passport.use(new LocalStrategy(
  function(username, password, done) {
    
    // Seem User model does not exist
    User.findOne({
      username: username
    }).done(function(err, user) {
      console.log(err);
      if (err) {
        return done(err);
      }
      if (!user) {
        return done(null, false, {
          message: 'Unknown user ' + username
        });
      }
      // Load hash from your password DB.
      bcrypt.compare(password, user.password, function(err, res) {
        if (res) {
          return done(null, user);
        } else {
          return done(null, false, {
            message: 'Invalid password'
          });
        }
      });
    });
  }
));

// Make passport globally available
module.exports = passport;