var mongoose = require('mongoose');
var bcrypt = require('bcrypt');

var userSchema = new mongoose.Schema({
    local: {
        username: String,
        password: String
    }
});

userSchema.methods.generateHash = function(password) {
    return bcrypt.hashSync(password, bcrypt.genSaltSync(8), null);
};
userSchema.methods.validPassword = function(password) {
    return bcrypt.compareSync(password, this.local.password);
};

module.exports = mongoose.model('User', userSchema);

var express = require('express');
var mongoose = require('mongoose');
var passport = require('passport');
var bodyParser = require('body-parser');
var cookieParser = require('cookie-parser');
var app = express();

var User = require('./models/user.js');
app.use(cookieParser());
app.use(bodyParser());

// Database
mongoose.connect('mongodb://localhost', function(err) {
    if (err) throw err;
    console.log('Successfully connected to the database!');
});

// Passport
app.use(passport.initialize());
app.use(passport.session());
var localStrategy = require('passport-local').Strategy;

passport.use('local-signup', new localStrategy({
    passReqToCallback: true
},
    function(req, username, password, done) {
        process.nextTick(function() {
            User.findOne({'local.username' : username }, function(err, user) {
                if (err)
                    console.log('error');
                    return done(error);

                if (user) {
                    console.log('User exists');
                    return done(null, false);
                }
                else {
                    var newUser = new User();
                    newUser.local.username = username;
                    newUser.local.password = newUser.generateHash(password);

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

// Routes
app.post('/signup', passport.authenticate('local-signup',
    {
    successRedirect: '/',
    failureRedirect: '/signup'
    }
));

// Server listens
var port = process.env.PORT || 3000;
app.listen(port, function() {
    console.log("Listen to port " + port);
});