/**
 * @author Alexi Jamal
 */



//const app = require('express')();

//Packages requires
const express = require('express');
const bodyPar = require('body-parser');
const session = require('express-session');
const cms = require('connect-mongodb-session');
const mongoose = require('mongoose');
const routerActions = require('./routes/router');

//Creating packages objects
const app = express();
const mongoStore = cms(session);
const urlEncodedBodyParser = bodyPar.urlencoded({ extended: false });

mongoose.set('useNewUrlParser', true);
mongoose.set('useCreateIndex', true);
mongoose.set('useFindAndModify', false);

DATABASE_NAME = "midterm"
mongoose.connect(`mongodb://localhost:27017/${DATABASE_NAME}`);

const mongoConnection = mongoose.connection;

module.exports = mongoConnection

app.use(session({
    secret: 'testing',
    cookie: {
        maxAge: 1000 * 60 * 60 * 24 * 7
    },
    resave: true,
    saveUninitialized: false,
    store: new mongoStore({
        uri: `mongodb://localhost:27017/${DATABASE_NAME}`,
        collection: 'sessions'
    })
}));

app.use("/", express.static("public"));

app.use('/user', routerActions);

const showProfile = async (req, res) => {

    const user = await User.findById(req.session.userId);

    if (user === null) {
        res.status(403).send('Forbidden');
        return;
    }

    var html = "Welcome " + user.name + " to your profile!!\nClick <a href='logout'>here</a> to logout."
    res.status(200).send(html);
    return;
}

const logout = async (req, res) => {
    if (req.session) await req.session.destroy();
    res.redirect('/');
    return;
}

const register = (req, res) => {

    if (req.body.username && req.body.password && req.body.name) {

        (async () => {

            const password = await bcrypt.hash(req.body.password, 10);

            const user = new User({
                _id: mongoose.Types.ObjectId(),
                name: req.body.name,
                username: req.body.username,
                password: password
            });

            await user.validate();
            await user.save();
            req.session.userId = user._id;
            res.redirect('/profile');
            return;

        })().catch((error) => { res.status(400).send('Bad request.'); });
    }
    else { res.status(400).send('Bad request.'); }
}

const login = (req, res) => {

    if (req.body.username && req.body.password) {

        console.log(req.body.username)

        User.authenticate(req.body.username, req.body.password).then((user) => {
            if (user !== null) {
                req.session.userId = user._id;
                res.redirect('/profile');
                return;
            }
            else { res.status(401).send('Login failed.'); }
        });
    }
    else { res.status(401).send('Login failed.'); }

    return;
}

app.post('/register', urlEncodedBodyParser, [register]);

app.post('/login', urlEncodedBodyParser, [login]);

app.get('/profile', [showProfile]);

app.get('/logout', [logout]);

let port = process.env.PORT || 3000;
app.listen(port, () => {
    console.log("Listening on port "+port);
})