server.js

const express = require("express");
const cors = require("cors");
const bodyParser = require("body-parser");
const path = require("path");
const compression = require("compression");

if (process.env.NODE_ENV !== "production"){
    require('dotenv').config()
}

const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY);

const app = express();
const port = process.env.PORT || 5000 ;

app.use(compression());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }))

app.use(cors());

if(process.env.NODE_ENV === "production"){
    app.use(express.static(path.join(__dirname, 'client/build')))

    app.get('*', function (req, res) {
        res.sendFile(path.join(__dirname, 'client/build', 'index.html'))
    })
}

app.listen(port , error => {
    if(error){
        throw error;
        console.log("Server running on port " +port);
    } else {
        console.log("Server running on port "+port)
    }
})

app.post('/payment', (req, res) => {
    
    const body = {
        source: req.body.token.id,
        amount: req.body.amount,
        currency: 'usd'
    };

    stripe.charges.create(body, (stripeErr, stripeRes) => {
        if(stripeErr){
            res.status(500).send({ error: stripeErr})
        } else {
            res.status(200).send({ success: stripeRes })
        }
    })
})