File Upload & Download Web App

A simple web application that allows users to upload files and download them later using a unique identifier.

Features

• File Upload: Upload files through a simple web interface
• File Storage: Files are stored in a SQLite database with metadata
• File Download: Download files using a unique file ID
• Modern UI: Clean and intuitive user interface

Prerequisites

• Node.js (v14 or higher)
• npm (Node Package Manager)

Installation

1. Install dependencies:

npm install

Usage

1. Start the server:

npm start

2. Open your browser and navigate to:

http://localhost:3000

3. Upload a file:

   • Click "Choose File" to select a file
   • Click "Upload File" to upload
   • Copy the File ID that appears after successful upload

4. Download a file:

   • Enter the File ID in the download section
   • Click "Download File"
   • The file will be downloaded to your computer

Project Structure

.
├── server.js          # Express server and database setup
├── package.json       # Project dependencies
├── public/
│   └── index.html     # Frontend interface
├── uploads/           # Directory for uploaded files (created automatically)
└── files.db           # SQLite database (created automatically)

API Endpoints

• GET / - Serve the main HTML page
• POST /upload - Upload a file (multipart/form-data)
• GET /download/:id - Download a file by ID
• GET /file/:id - Get file information by ID

Technologies Used

• Express.js - Web framework for Node.js
• Multer - Middleware for handling file uploads
• SQLite3 - Lightweight database for storing file metadata
• UUID - Generating unique identifiers for files

Notes

• Uploaded files are stored in the uploads/ directory
• File metadata (name, size, type, upload date) is stored in SQLite database
• Each file is assigned a unique UUID for identification
• The database and uploads directory are created automatically on first run

License

ISC