authJwt.js

const jwt = require('jsonwebtoken')
const config = require('./config.js')

verifyToken = (req, res, next) => {
    let token = req.headers['authorization']

    //Check is token is available, stop request if the token is not available
    if (!token) {
        return res.status(200).send({
            error: true,
            msg: 'Please login to continue using the service.'
        })
    }
    // Verify if token sent was created using the config secret
    jwt.verify(token, config.secret, (err, decoded) => {

        //Check is token is valid, stop request if the token is not invalid
        if (err) {
            console.log(err)
            return res.status(200).send({
                error: true,
                msg: 'Authentication Failed.'
            })
        }

        req.key = decoded.key // Get the unecrpyted key and assign to a new request variable
        next() // Continue with request
    })
}

const authJwt = {}
authJwt.verifyToken = verifyToken

module.exports = authJwt