var express = require('express');
var path = require('path');
var mongo = require('mongodb');
var bodyParser = require('body-parser');
var expressValidator = require('express-validator');
var passport = require('passport')
var LocalStrategy = require('passport-local').Strategy;


var app = express();
app.use(bodyParser.urlencoded({
	extended: false
}));
app.use(expressValidator());

//enter the name of the database in the end
var new_db = "mongodb://localhost:27017/detail";



app.get('/', function (req, res) {
	res.set({
		'Access-Control-Allow-Origin': '*'
	});
	return res.redirect('/public/index.html');
}).listen(3000);

console.log("Server listening at : 3000");
app.use('/public', express.static(__dirname + '/public'));
app.use(bodyParser.json());


// Sign-up function starts here. . .
app.post('/sign_up', function (req, res) {

	var email = req.body.email;
	var password = req.body.password;
	var cpasssword = req.body.cpassword;

	req.checkBody('email', 'email is required').notEmpty();
	req.checkBody('email', 'email is not valid').isEmail();
	req.checkBody('password', 'password is required').notEmpty();
	req.checkBody('cpassword', 'confirm password is required').notEmpty();
	req.checkBody('cpassword', 'password do not match').equals(req.body.password);



	var data = {

		"email": email,
		"password": password,
		"cpassword": cpasssword
	}

	mongo.connect(new_db, function (error, db) {
		if (error) {
			throw error;
		}
		console.log("connected to database successfully");
		//CREATING A COLLECTION IN MONGODB USING NODE.JS
		var dbase = db.db("detail");
		dbase.createCollection("details", (err, collection) => {
			if (err) throw err;

			console.log("Details collection created successfully");

		});

		dbase.collection("details").insertOne(data, (err, collection) => {
			if (err) throw err;
			console.log("Record inserted successfully");
			console.log(collection);
		});



	});

	console.log("DATA is " + JSON.stringify(data));
	res.set({
		'Access-Control-Allow-Origin': '*'
	});
	return res.redirect('/public/success.html');



});

app.post('/login',
	passport.authenticate('local'),
	function (req, res) {
		// If this function gets called, authentication was successful.
		// `req.user` contains the authenticated user.
		res.redirect('/users/' + req.user.username);
	});

passport.use(new LocalStrategy(
	function (username, password, done) {
		User.findOne({
			username: username
		}, function (err, user) {
			if (err) {
				return done(err);
			}
			if (!user) {
				return done(null, false, {
					message: 'Incorrect username.'
				});
			}
			if (!user.validPassword(password)) {
				return done(null, false, {
					message: 'Incorrect password.'
				});
			}
			return done(null, user);
		});
	}
));