feat(server): add automatic cleanup of upload files older than 24 hours

server/index.js

@@ -8,6 +8,8 @@ const FormData = require('form-data');
 const PDFDocument = require('pdfkit');
 const path = require('path');
 const fs = require('fs');
+const cron = require('node-cron');
+const cleanupOldUploads = require('./utils/cleanupUploads');
 require('dotenv').config();
 
 const Analysis = require('./models/Analysis');
@@ -20,6 +22,16 @@ if (!fs.existsSync(uploadsDir)) {
     fs.mkdirSync(uploadsDir);
 }
 
+// Schedule automatic cleanup of files older than 24 hours
+// Runs every hour, on the hour
+cron.schedule('0 * * * *', () => {
+    console.log('🧹 Running scheduled uploads cleanup...');
+    cleanupOldUploads();
+});
+
+// Run once immediately on server start too
+cleanupOldUploads();
+
 // Storage Configuration
 const storage = multer.diskStorage({
     destination: (req, file, cb) => {

server/package.json

@@ -19,6 +19,7 @@
     "jsonwebtoken": "^9.0.3",
     "mongoose": "^9.5.0",
     "multer": "^2.1.1",
+    "node-cron": "^4.4.1",
     "pdfkit": "^0.18.0",
     "zod": "^4.4.3"
   }

server/utils/cleanupUploads.js

@@ -0,0 +1,44 @@
+const fs = require('fs');
+const path = require('path');
+
+// Path to the uploads folder (server/uploads)
+const uploadsDir = path.join(__dirname, '..', 'uploads');
+
+// How old a file must be before we delete it (in milliseconds)
+const MAX_AGE_MS = 24 * 60 * 60 * 1000; // 24 hours
+
+function cleanupOldUploads() {
+    fs.readdir(uploadsDir, (err, files) => {
+        if (err) {
+            console.error('❌ Cleanup: failed to read uploads directory:', err.message);
+            return;
+        }
+
+        const now = Date.now();
+
+        files.forEach((file) => {
+            const filePath = path.join(uploadsDir, file);
+
+            fs.stat(filePath, (err, stats) => {
+                if (err) {
+                    console.error(`❌ Cleanup: failed to stat file ${file}:`, err.message);
+                    return;
+                }
+
+                const fileAge = now - stats.mtimeMs;
+
+                if (fileAge > MAX_AGE_MS) {
+                    fs.unlink(filePath, (err) => {
+                        if (err) {
+                            console.error(`❌ Cleanup: failed to delete ${file}:`, err.message);
+                        } else {
+                            console.log(`🗑️ Cleanup: deleted old file ${file}`);
+                        }
+                    });
+                }
+            });
+        });
+    });
+}
+
+module.exports = cleanupOldUploads;