Ajout de la base de données MySQL

src/server.js

@@ -0,0 +1,24 @@
+const http = require('http'); // import the http module from node.js core  to create a server  instance
+const app = require('./app'); // import the express app from the app.js file
+const connectDB = require('./services/connectDB');
+
+const PORT = process.env.PORT || 3000; // set the port number to be used by the server instance
+
+/* create a server instance using the http.createServer method
+ * there is no right or wrong way to create a server instance  weather using the http.createServer method or the app.listen method
+ * I usualy use the http.createServer method because it gives me more control over the server instance like adding a socket.io instance to the server instance
+ */
+const server = http.createServer(app);
+
+// Adding server instance inside a callback function also gives a flexibility to add more logic before starting the server
+const startServer = () => {
+  // Listen to the server instance on the specified port number
+  connectDB(); // connect to the database  before starting the server
+  server.listen(PORT, () => {
+    console.log(
+      `Server is running on port ${PORT} AND NODE_ENV is ${process.env.NODE_ENV}`
+    );
+  });
+};
+
+startServer(); // start the server instance