Arreglo problema con API POST

node_modules/body-parser/package.json

 {
-  "_from": "body-parser",
+  "_from": "body-parser@^1.19.0",
   "_id": "body-parser@1.19.0",
   "_inBundle": false,
   "_integrity": "sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==",
   "_location": "/body-parser",
   "_phantomChildren": {},
   "_requested": {
-    "type": "tag",
+    "type": "range",
     "registry": true,
-    "raw": "body-parser",
+    "raw": "body-parser@^1.19.0",
     "name": "body-parser",
     "escapedName": "body-parser",
-    "rawSpec": "",
+    "rawSpec": "^1.19.0",
     "saveSpec": null,
-    "fetchSpec": "latest"
+    "fetchSpec": "^1.19.0"
   },
   "_requiredBy": [
     "#USER",
@@ -22,7 +22,7 @@
   ],
   "_resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.0.tgz",
   "_shasum": "96b2709e57c9c4e09a6fd66a8fd979844f69f08a",
-  "_spec": "body-parser",
+  "_spec": "body-parser@^1.19.0",
   "_where": "C:\\Users\\Usuario\\Desktop\\Laboratorio02",
   "bugs": {
     "url": "https://github.com/expressjs/body-parser/issues"

src/index.js

 const express = require('express');
+const bodyParser = require('body-parser');
 
 // ----------------- Initializations -----------------
 // Importo librería express
@@ -8,6 +9,9 @@ require('./database');
 // ----------------- Settings -----------------
 app.set('port', 3000);
 
+app.use(bodyParser.urlencoded({ extended: true }));
+app.use(bodyParser.json());
+
 // ----------------- Middlewares -----------------
 
 // ----------------- Global variables -----------------

src/routes/user.js

 const express = require('express');
-const bodyParser = require('body-parser');
 
-const router = express.Router();
 const app = express();
 
-app.use(bodyParser.urlencoded({ extended: false }));
-app.use(bodyParser.json());
+const router = express.Router();
 
-const users = [];
+const users = [
+    {
+        email: 'email1',
+        comment: []
+    }
+];
 
 // [GET] OBTENER TODOS LOS USUARIOS: /users
 router.get('/users', (req, res) => {
@@ -16,10 +18,10 @@ router.get('/users', (req, res) => {
 
 // [GET] OBTENER UN USUARIO: /user/:id
 router.get('/user/:id', (req, res) => {
-    const userId = Number(req.params.id);
-    const user = users.find((data) => data.id === userId);
+    const userEmail = req.params.id;
+    const user = users.find((data) => data.email === userEmail);
     if (!user) {
-        res.status(500).send('Usuario no encontrado')
+        res.status(500).send('Usuario no encontrado');
     } else {
         res.json(user);
     }
@@ -27,12 +29,19 @@ router.get('/user/:id', (req, res) => {
 
 // [POST] CREAR UN NUEVO USUARIO: /user/new
 router.post('/user', (req, res) => {
-    console.log(req);
+    if (req.body) {
         console.log(req.body);
-    const newUser = {email: req.body.email, comment: [] };
+        if (req.body.email) {
+            const newUser = {email: req.body.email.toString(), comment: [] };
             console.log(newUser);
             users.push(newUser);
             res.json(users);
+        } else {
+            res.status(500).send('Se debe ingresar un email');
+        }
+    } else {
+        res.status(500).send('Existió un error al procesar la solicitud');
+    }
 });
 
 // [GET] OBTENER LOS COMENTARIOS DE UN USUARIO: /user/:id/comments