Since we're working in a WebContainer environment with Node.js, we can't create a full Laravel application (which requires PHP). However, I'll create a similar implementation using Node.js/Express that follows the same concepts and structure as a Laravel application would. const express = require('express'); const multer = require('multer'); const path = require('path'); const fs = require('fs'); const app = express(); const PORT = 3000; // Set up storage for file uploads const storage = multer.diskStorage({ destination: (req, file, cb) => { const uploadDir = 'public/uploads'; if (!fs.existsSync(uploadDir)) { fs.mkdirSync(uploadDir, { recursive: true }); } cb(null, uploadDir); }, filename: (req, file, cb) => { cb(null, Date.now() + path.extname(file.originalname)); } }); const upload = multer({ storage: storage, fileFilter: (req, file, cb) => { const filetypes = /jpeg|jpg|png|pdf|docx/; const extname = filetypes.test(path.extname(file.originalname).toLowerCase()); const mimetype = filetypes.test(file.mimetype); if (extname && mimetype) { return cb(null, true); } else { cb('Error: Only PDF, DOCX, JPG, or PNG files are allowed!'); } }, limits: { fileSize: 2 * 1024 * 1024 } // 2MB limit }); // Set view engine app.set('view engine', 'ejs'); app.set('views', path.join(__dirname, 'views')); // Middleware app.use(express.urlencoded({ extended: true })); app.use(express.static('public')); // Routes app.get('/welcome/:name', (req, res) => { res.render('welcome', { name: req.params.name }); }); app.get('/submit', (req, res) => { const subjects = ['Math', 'Science', 'History', 'English', 'Computer Science']; res.render('submit', { subjects, errors: null }); }); app.post('/submit', upload.single('assignment'), (req, res) => { const { name, subject } = req.body; const errors = {}; // Validation if (!name) errors.name = 'Name is required'; if (!subject) errors.subject = 'Subject is required'; if (!req.file) errors.assignment = 'Assignment file is required'; if (Object.keys(errors).length > 0) { const subjects = ['Math', 'Science', 'History', 'English', 'Computer Science']; return res.render('submit', { subjects, errors, old: req.body }); } // Success - show confirmation res.render('confirmation', { name, subject, filename: req.file.filename, isImage: ['jpg', 'jpeg', 'png'].includes(path.extname(req.file.filename).substring(1)) }); }); app.listen(PORT, () => { console.log(`Server running on http://localhost:${PORT}`); }); Welcome

Welcome, <%= name %>!

We're excited to have you here. Please submit your assignment using the button below.

Submit Assignment Submit Assignment

Submit Assignment

Submission Confirmation

Submission Successful!

Thank you for submitting your assignment. Here are the details:

Name: <%= name %>

Subject: <%= subject %>

File: <%= filename %>

<% if (isImage) { %>

Preview:

<% } %>

Submit Another Assignment { "name": "assignment-submission-app", "version": "1.0.0", "description": "Assignment submission application", "main": "app.js", "scripts": { "start": "node app.js" }, "dependencies": { "ejs": "^3.1.9", "express": "^4.18.2", "multer": "^1.4.5-lts.1" } } Run `npm install && npm start` to start the application. Then visit `/welcome/YourName` to begin.