const express = require('express'); const fs = require('fs'); const path = require('path'); const app = express(); // Protect this route with an authentication middleware (e.g., JWT) app.get('/api/v1/download/:songId', authenticateUser, async (req, res) => { try { const songId = req.params.songId; const userId = req.user.id; // From auth middleware // 1. Fetch song details from database (mocked here) const song = { id: '101', artist: 'Lalə Məmmədova', title: 'Çiçək', filePath: '/secure/storage/lale_memmedova_cicek.mp3' }; // 2. Validate file existence if (!fs.existsSync(song.filePath)) { return res.status(404).json({ error: "File not found." }); } // 3. Log the download in DB for analytics/licensing await logDownloadToDB(userId, songId); // 4. Set headers to force browser file download const downloadName = `${song.artist.replace(/\s+/g, '_')}_-_${song.title.replace(/\s+/g, '_')}.mp3`; res.setHeader('Content-Disposition', `attachment; filename="${encodeURIComponent(downloadName)}"`); res.setHeader('Content-Type', 'audio/mpeg'); // 5. Stream file to client const fileStream = fs.createReadStream(song.filePath); fileStream.pipe(res); } catch (error) { res.status(500).json({ error: "Internal Server Error" }); } }); Use code with caution. 3. Frontend Implementation (React Example)
Tracks which user downloaded which song and when. 2. Backend Implementation (Node.js/Express Example) LalЙ™ MЙ™mmЙ™dova CicЙ™k Yukle
Trigger the browser download by requesting the API endpoint through a clickable user interface. javascript Log the download in DB for analytics/licensing await
Ensure you have proper licensing agreements for redistribution, as this song belongs to the artist Lalə Məmmədova . Lalə Məmmədova - Vikipediya Use code with caution.
Protect your servers by limiting downloads per user per minute.
To prevent direct URL leaks of your storage bucket, stream the file securely through your backend API. javascript
The technical architecture outlined below covers backend logic, database modeling, and front-end implementation. 🛠️ System Architecture 1. Database Schema