server.js

require("dotenv").config();

require("./db"); // will run the code in `./db/index.js` (which is the database connection logic)
require("./passport");

const express = require("express");
const logger = require("morgan");

const app = express();

app.use(express.urlencoded({ extended: true })); // sets the `body` object in the `request` with the values from an HTML POST form

app.use(express.json()); // sets the `body` object in the `request` with the data coming from a request with a `body` (request we'll issue with axios, fetch...)

app.use(logger("dev")); // this middleware will log every response that is issued (with the status code) in the console
app.use(express.static("client/build"));

require("./session")(app);

const routes = require("./routes"); // this is our controller and will manage all the routes so we don't have to register any new route handler here
app.use(routes);

app.use((req, res) => {
  res.sendFile(__dirname + "/client/build/index.html");
});

app.listen(process.env.PORT, () => {
  console.log(`Express server listening to: ${process.env.PORT}`);
});