server.js

"use strict";

//création du serveur Node qui va écouter et traiter les requêtes 
const http = require('http');
const app = require("./app");
const dotenv = require('dotenv');
const fs = require('fs');
const path = require('path');

const normalizePort = (val) => {
  const port = parseInt(val, 10);

  if (isNaN(port)) {
    return val;
  }
  if (port >= 0) {
    return port;
  }
  return false;
};
const port = normalizePort(process.env.PORT);
app.set("port", port);

const errorHandler = (error) => {
  if (error.syscall !== "listen") {
    throw error;
  }
  const address = server.address();
  const bind =
    typeof address === "string" ? "pipe " + address : "port: " + port;
  switch (error.code) {
    case "EACCES":
      console.error(bind + " requires elevated privileges.");
      process.exit(1);
      break;
    case "EADDRINUSE":
      console.error(bind + " is already in use.");
      process.exit(1);
      break;
    default:
      throw error;
  }
};

//création du dossier images/ qui va servir aux sauces
fs.mkdir(path.join(__dirname, "images"), {recursive: true}, (error) => {
  if (error) {
    return console.log(error);
  }
  console.log('Directory created successfully !');
});

const server = http.createServer(app);

server.on("error", errorHandler);
server.on("listening", () => {
  const address = server.address();
  const bind = typeof address === "string" ? "pipe " + address : "port " + port;
  console.log("Listening on " + bind);
});

server.listen(port);