Add 5-http.js file

Author: Mar-Issah

0x05-Node_JS_basic/3-read_file_async.js

@@ -5,7 +5,6 @@ const fs = require('fs');
  * @param {String} path - The path to the CSV data file.
  * @returns {Promise<void>}
  */
-
 const countStudents = (path) =>
   new Promise((resolve, reject) => {
     fs.readFile(path, 'utf-8', (err, data) => {

0x05-Node_JS_basic/5-http.js

@@ -0,0 +1,60 @@
+const http = require('http');
+const fs = require('fs');
+const countStudents = require('./3-read_file_async');
+
+const PORT = 1245;
+const HOST = 'localhost';
+const app = http.createServer();
+const DB_PATH = process.argv.length > 2 ? process.argv[2] : '';
+
+const SERVER_ROUTE_HANDLERS = [
+  {
+    route: '/',
+    handler(_, res) {
+      const responseText = 'Hello Holberton School!';
+      res.setHeader('Content-Type', 'text/plain');
+      res.setHeader('Content-Length', responseText.length);
+      res.statusCode = 200;
+      res.write(Buffer.from(responseText));
+    },
+  },
+  {
+    route: '/students',
+    handler(_, res) {
+      const responseParts = ['This is the list of our students'];
+
+      countStudents(DB_PATH)
+        .then((report) => {
+          responseParts.push(report);
+          const responseText = responseParts.join('\n');
+          res.setHeader('Content-Type', 'text/plain');
+          res.setHeader('Content-Length', responseText.length);
+          res.statusCode = 200;
+          res.write(Buffer.from(responseText));
+        })
+        .catch((err) => {
+          responseParts.push(err instanceof Error ? err.message : err.toString());
+          const responseText = responseParts.join('\n');
+          res.setHeader('Content-Type', 'text/plain');
+          res.setHeader('Content-Length', responseText.length);
+          res.statusCode = 200;
+          res.write(Buffer.from(responseText));
+        });
+    },
+  },
+];
+
+app.on('request', (req, res) => {
+  for (const routeHandler of SERVER_ROUTE_HANDLERS) {
+    if (routeHandler.route === req.url) {
+      routeHandler.handler(req, res);
+      break;
+    }
+  }
+});
+
+app.listen(PORT, HOST, () => {
+  process.stdout.write(`Server listening at -> http://${HOST}:${PORT}\n`);
+});
+
+module.exports = app;