const express = require('express');
const path = require('path');
const bodyparser = require('body-parser');
const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;
// const cookieParser = require('cookie-parser');

const session = require('express-session')
const RedisStore = require('connect-redis')(session);

const bcrypt = require('bcrypt');
const db = require('./models');
const { User } = require('./models');

const saltRounds = 10;

const app = express();
app.use(bodyparser.urlencoded({extended: false}));

// app.use(cookieParser());
app.use(session({
  store: new RedisStore(),
  secret: 'something_super-weird',
  resave: false,
  saveUninitialized: true
}))

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

passport.use(new LocalStrategy (
  function(username, password, done) {
    console.log('runs before serializing')
    User.findOne({
      where: {
        username: username
      }
    }).then ( user => {
      if (user === null) {
        console.log('user failed')
        return done(null, false, {message: 'bad username'})
      }else {
        bcrypt.compare(password, user.password).then(res => {
          if (res) {
            return done(null, user);
          }else {
            return done(null, false, {message: 'bad password'})
          }
        })
      }
    }).catch(err => {
      console.log('error: ', err)
    })
  }
))


passport.serializeUser(function(user, done) {
  console.log('serializing')
                              // ^ ---------- given from authentication strategy
  // building the object to serialize to save
  return done(null, {
    id: user.id,
    username: user.username
  })
});

passport.deserializeUser(function(user, done) {
  console.log('deserializing')
                                 // ^ ---------- given from serializeUser
  User.findOne({
    where: {
      id: user.id
    }
  }).then(user => {
    return done(null, user) // <------- inserts into the request object
  })
});

// app.use((req, res, next) => {
//   if (req.method.toUpperCase() !== "GET") {
//     isAuthenticated(req, res, next);
//   }else {
//     next();
//   }
// })


app.post('/createuser', (req, res) => {
  User.create({
    username: req.body.username,
    password: req.body.password
  }).then( _ => {
    res.redirect('/login')
  })
})

app.get('/', (req, res) => {
  res.send('hello')
})

app.get('/login', (req, res) => {
  res.sendFile(path.join(__dirname + '/views/login.html'));
})

app.post('/user/new', (req, res) => {
  bcrypt.genSalt(saltRounds, function(err, salt) {
    bcrypt.hash(req.body.password, salt, function(err, hash) {
      User.create({
        username: req.body.username,
        password: hash
      }).then( _ => {
        res.redirect('/login')
      })
    });
  });
})

app.get('/secret', isAuthenticated, (req, res) => {
  // console.log('req.user: ', req.user);
  console.log('req.user id', req.user.id)
  console.log('req.username', req.user.username)
  console.log('req.user.password: ', req.user.password);

  console.log('pinging the secret')
  res.send('you found the secret!')
})

app.post('/login', passport.authenticate('local', {
  successRedirect: '/secret',
  failureRedirect: '/login'
}))

function isAuthenticated (req, res, next) {
  console.log('checking')
  if(req.isAuthenticated()) {
    console.log('you good')
    next();
  }else {
    console.log('you bad!!!!')
    res.redirect('/login')
  }
}


app.listen(9000, () => {
  console.log('starting server');
  db.sequelize.sync();
})