const express = require('express');
const router = express.Router();
const jwt = require('jsonwebtoken');
const fs = require('fs');
// const keys = require('../../config/keys');
const auth = require('../../middleware/auth');

const users = JSON.parse(fs.readFileSync('./data/users.json'));
const keys = JSON.parse(fs.readFileSync('./config/keys.json'));

// @route   POST usuarios/login
// @desc    Autenticar usuario y generar token
// @access  Public
router.post('/login', (req, res) => {
    const {username, password} = req.body;

    try {
        // Checar si existe el usuario
        if (!users.find(user => user.username === username)) {
            return res.status(400).json({errors: [{msg: 'Invalid Credentials'}]});
        }

        // Checar contraseña
        if (!users.find(user => user.password === password)) {
            return res.status(400).json({errors: [{msg: 'Invalid Credentials'}]});
        }

        // Se agrega payload
        const payload = {
        };

        // Expira en 5 minutos
        jwt.sign(
            payload,
            keys.jwtSecret,
            {expiresIn: 300},
            (err, token) => {
                if (err) throw err;
                res.json({token});
            });

    } catch (e) {
        console.error(e.message);
        res.status(500).send('Server error');
    }
});

// @route   POST usuarios/logout
// @desc    Changes jwyKey
// @access  Public
router.post('/logout', auth, (req, res) => {
    console.log(keys.jwtSecret);
    keys.jwtSecret = 'EODKOEKDdawdawdIJDiajWIDJIAWJDaijdOK';
    res.status(200).send('User logout');
    console.log(keys.jwtSecret);
});



module.exports = router;