index.js

//init server
const express = require("express");
const app = express();

//imports
const dotenv = require("dotenv");
const mongoose = require("mongoose");
const multer = require("multer");
const path = require("path");

//routes
const authRoute = require("./routes/auth");
const usersRoute = require("./routes/users");
const articlesRoute = require("./routes/articles");

//get mongo url
dotenv.config();

//middleware
app.use(express.json());

//mongoose connection
mongoose
  .connect(process.env.MONGO_URL)
  .then(console.log("Connected to MongoDB."))
  .catch((err) => console.log(err));

//using routes
app.use("/auth", authRoute);
app.use("/users", usersRoute);
app.use("/articles", articlesRoute);

if (process.env.NODE_ENV == "production") {
  app.use(express.static("client/build"));
  app.get("*", function (req, res) {
    res.sendFile(path.resolve(__dirname, "client", "build", "index.html"));
  });
}

const port = process.env.PORT || 3080;

app.listen(port, () => console.log(`Server running at port ${port}....`));