server.js

const express = require("express");
const app = express();
const bodyParser = require("body-parser");
const mongoose = require("mongoose");
const cors = require("cors");
const path = require("path");
const dotenv = require("dotenv");

//Requiring routes
const authUser = require("./routes/auth");
const level = require("./routes/levels");

dotenv.config();

const db = process.env.MONGO_URI;

mongoose
	.connect(db, {
		useNewUrlParser: true,
		useUnifiedTopology: true,
		useCreateIndex: true
	})
	.then(() => console.log("Database connected"))
	.catch(err => {
		console.log(err);
	});

app.use(
	express.urlencoded({
		extended: false
	})
);

app.use(bodyParser.json());

app.use(cors());
app.use("/user", authUser);
app.use("/", level);

app.use("/public", express.static("public"));

if (process.env.NODE_ENV === "production") {
	// Set static folder
	app.use(express.static("client/build"));
	app.use("/public", express.static("public"));

	app.get("*", (req, res) => {
		res.sendFile(path.resolve(__dirname, "client", "build", "index.html"));
	});
}

const PORT = process.env.PORT || 5000;

var server = app.listen(PORT, () => {
	console.log(`Server started on ${PORT}`);
});