routes/todos.js → backend/routes/todos.js

-const express = require('express');
+const express = require("express");
 const router = express.Router();
-const Todo = require('../models/todo');
+const Todo = require("../models/todo");
 
 // Middleware to verify if the user is authenticated
 function isAuthenticated(req, res, next) {
   if (req.session.user) {
     return next();
   } else {
-    return res.status(401).json({ error: 'Unauthorized' });
+    return res.status(401).json({ error: "Unauthorized" });
   }
 }
 
 // Route to logout
-router.post('/logout', (req, res) => {
+router.post("/logout", (req, res) => {
   req.session.destroy((err) => {
     if (err) {
-      console.error('Error al destruir la sesión:', err);
-      return res.status(500).json({ error: 'Error al cerrar sesión' });
+      console.error("Error al destruir la sesión:", err);
+      return res.status(500).json({ error: "Error al cerrar sesión" });
     }
-    res.status(200).json({ message: 'Logout successful' });
+    res.status(200).json({ message: "Logout successful" });
   });
 });
 
 // Route to obtain all tasks of authenticated user
-router.get('/', isAuthenticated, async (req, res) => {
+router.get("/", isAuthenticated, async (req, res) => {
   try {
     const todos = await Todo.find({ userId: req.session.user.id });
     res.json(todos);
   } catch (error) {
     console.error(error);
-    res.status(500).json({ error: 'Server error' });
+    res.status(500).json({ error: "Server error" });
   }
 });
 
 // Route to add a task
-router.post('/', isAuthenticated, async (req, res) => {
+router.post("/", isAuthenticated, async (req, res) => {
   const { description } = req.body;
-  
+
   try {
     const todo = new Todo({ description, userId: req.session.user.id });
     await todo.save();
     res.json(todo);
   } catch (error) {
     console.error(error);
-    res.status(500).json({ error: 'Server error' });
+    res.status(500).json({ error: "Server error" });
   }
 });
 
-
 // Route to eliminate tasks
-router.delete('/:id', isAuthenticated, async (req, res) => {
+router.delete("/:id", isAuthenticated, async (req, res) => {
   try {
     const todo = await Todo.findById(req.params.id);
 
     if (!todo || todo.userId.toString() !== req.session.user.id) {
-      return res.status(404).json({ error: 'Todo not found or unauthorized' });
+      return res.status(404).json({ error: "Todo not found or unauthorized" });
     }
 
-    await todo.deleteOne(); 
+    await todo.deleteOne();
     res.json({ success: true });
   } catch (error) {
     console.error(error);
-    res.status(500).json({ error: 'Server error' });
+    res.status(500).json({ error: "Server error" });
   }
 });
 
 // Route to update the description of a task
-router.put('/:id/description', isAuthenticated, async (req, res) => {
+router.put("/:id/description", isAuthenticated, async (req, res) => {
   const { description } = req.body;
-  
+
   try {
     const todo = await Todo.findById(req.params.id);
-    
+
     if (!todo || todo.userId.toString() !== req.session.user.id) {
-      return res.status(404).json({ error: 'Todo not found or unauthorized' });
+      return res.status(404).json({ error: "Todo not found or unauthorized" });
     }
 
     todo.description = description;
@@ -82,19 +81,19 @@ router.put('/:id/description', isAuthenticated, async (req, res) => {
     res.json({ todo });
   } catch (error) {
     console.error(error);
-    res.status(500).json({ error: 'Server error' });
+    res.status(500).json({ error: "Server error" });
   }
 });
 
 // Route to mark a task as completed
-router.put('/:id/done', isAuthenticated, async (req, res) => {
+router.put("/:id/done", isAuthenticated, async (req, res) => {
   const { isDone } = req.body;
-  
+
   try {
     const todo = await Todo.findById(req.params.id);
 
     if (!todo || todo.userId.toString() !== req.session.user.id) {
-      return res.status(404).json({ error: 'Todo not found or unauthorized' });
+      return res.status(404).json({ error: "Todo not found or unauthorized" });
     }
 
     todo.isDone = isDone;
@@ -103,8 +102,8 @@ router.put('/:id/done', isAuthenticated, async (req, res) => {
     res.json({ todo });
   } catch (error) {
     console.error(error);
-    res.status(500).json({ error: 'Server error' });
+    res.status(500).json({ error: "Server error" });
   }
 });
 
-module.exports = router;
\ No newline at end of file
+module.exports = router;

server.js → backend/server.js

-const express = require('express');
-const path = require('path');
-const connectDB = require('./mongodb');
-const session = require('express-session');
+const express = require("express");
+const path = require("path");
+const connectDB = require("./mongodb");
+const session = require("express-session");
 
 const app = express();
 
 // Middleware
 app.use(express.json());
-app.use(express.static(path.join(__dirname, 'public')));
+app.use(express.static(path.join(__dirname, "public")));
 
 // Session configuration
 app.use(
   session({
-    secret: 'session_secret',
+    secret: "session_secret",
     resave: false,
     saveUninitialized: false,
-    cookie: { secure: false }
+    cookie: { secure: false },
   })
 );
 
@@ -23,8 +23,8 @@ app.use(
 connectDB();
 
 // Routes
-app.use('/api/todos', require('./routes/todos'));
-app.use('/api/users', require('./routes/users'));
+app.use("/api/todos", require("./routes/todos"));
+app.use("/api/users", require("./routes/users"));
 
 // Initialize the server
 const PORT = process.env.PORT || 3000;