server.js

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

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

if (process.env.NODE_ENV === "production") {
    app.use(compression());
    app.use(enforce.HTTPS({ trustProtoHeader: true }));
    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);
});

app.get('/service-worker.js', (res, req) => {
    res.sendFile(path.resolve(__dirname, '..', 'build', 'service-worker.js'));
})

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 });
        }
    });
});