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

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

app.use(cookieParser())
app.use(bodyParser())
app.use(session({ secret: 'keyboard cat' }))

var form = '<form action="/login" method="post"> <input name="username" id="username" type="text" placeholder="Your username" /> <input name="password" id="password" type="password" placeholder="Your password"/> <input type="submit" /> </form> '


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


users = {"bob@something.com":{password:"1234", email:"bob@something.com", dropbox:"ignore", somethingelse:"helloo", firstName:"bob"}}

var findUser = function(username, done){
	console.log(username,  "finding user")
	done(null,users[username])
}

var createLiteUser = function(user){
	var liteUser = {
  	email: user.email,
  	firstName: user.firstName
	  }
	  return liteUser;
}

function authenticationMiddleware () {
  return function (req, res, next) {
    if (req.isAuthenticated()) {
      return next()
    }
    res.redirect('/login')
  }
}

passport.use(new LocalStrategy(function(username, password, done){
	console.log("local stragegy", username, password)
	findUser(username, function(err, user){
		console.log("found user", user)
		if(password != user.password){
			console.log("password does not match for user", username)
			done()
		} else {
			done(null, user)
		}
	})
}))


passport.serializeUser(function (user, cb) {
  console.log("serializing user to liteuser")
  var liteUser = createLiteUser(user)
  cb(null, liteUser)
})

passport.deserializeUser(function (user, cb) {
	console.log("deserializeUser", user)
	cb(null, user)
})


app.get('/', authenticationMiddleware(), function (req, res) {
	console.log(req.session, req.user)
  res.send('Hello you are logged in!');
});

app.get('/login', function (req, res) {
  res.send(form);
});

app.post('/login', passport.authenticate('local', { failureRedirect: '/login', successRedirect:"/" }), function (req, res) {
  res.send('Hello World!');
});

app.get('/logout', authenticationMiddleware(), function (req, res) {
	req.session.destroy()
	res.send("logged out")
});

app.listen(5000, function () {
  console.log('Example app listening on port 5000!');
});