const express = require('express');
const router = express.Router();
const passport = require('passport');
const jwt = require('jsonwebtoken');
const config = require('../config/database');
const User = require('../models/user');

// Register view
router.get('/register', function (req, res) {
  res.render('register');
});

// Register
router.post('/register', (req, res, next) => {
  let newUser = new User({
    name: req.body.name,
    email: req.body.email,
    username: req.body.username,
    password: req.body.password
  });

  User.addUser(newUser, (err, user) => {
    if (err) {
      res.json({
        success: false,
        msg: 'Failed to register user'
      });
    } else {
      res.json({
        success: true,
        msg: 'User registered'
      });
    }
  });
});

// Login view
router.get('/login', function (req, res) {
  res.render('login');
});

// Login
router.post('/login', (req, res, next) => {
  const username = req.body.username;
  const password = req.body.password;

  User.getUserByUsername(username, (err, user) => {
    if (err) throw err;
    if (!user) {
      return res.json({
        success: false,
        msg: 'User not found'
      });
    }

    User.comparePassword(password, user.password, (err, isMatch) => {
      if (err) throw err;
      if (isMatch) {
        const token = jwt.sign({
          data: user
        }, config.secret, {
          expiresIn: 604800 // 1 week
        });

        res.json({
          success: true,
          token: `Bearer ${token}`,
          user: {
            id: user._id,
            name: user.name,
            username: user.username,
            email: user.email
          }
        });
        res.header('Authorization', "Bearer " + token);
      } else {
        return res.json({
          success: false,
          msg: 'Wrong password'
        });
      }
    });
  });
});

// Profile
router.get('/profile', passport.authenticate('jwt', {
  session: false
}), (req, res, next) => {
  res.json({
    user: req.user
  });
});



module.exports = router;

const JwtStrategy = require('passport-jwt').Strategy;
const ExtractJwt = require('passport-jwt').ExtractJwt;
const User = require('../models/user');
const config = require('../config/database');

module.exports = function(passport){
  let opts = {};
  opts.jwtFromRequest = ExtractJwt.fromAuthHeaderAsBearerToken();
  opts.secretOrKey = config.secret;
  passport.use(new JwtStrategy(opts, (jwt_payload, done) => {
    User.getUserById(jwt_payload.data._id, (err, user) => {
      if(err){
        return done(err, false);
      }

      if(user){
        return done(null, user);
      } else {
        return done(null, false);
      }
    });
  }));
}