Meal Tracker v1 - complete

server/middleware/upload.js

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+import path from 'path';
+import { fileURLToPath } from 'url';
+import multer from 'multer';
+import 'dotenv/config';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const UPLOAD_DIR = process.env.UPLOAD_DIR || path.join(__dirname, '../../uploads');
+
+const storage = multer.diskStorage({
+  destination: (req, file, cb) => {
+    cb(null, UPLOAD_DIR);
+  },
+  filename: (req, file, cb) => {
+    const timestamp = Date.now();
+    const ext = path.extname(file.originalname);
+    cb(null, `${timestamp}${ext}`);
+  }
+});
+
+const fileFilter = (req, file, cb) => {
+  const allowedTypes = /jpeg|jpg|png|gif|webp/;
+  const ext = allowedTypes.test(path.extname(file.originalname).toLowerCase());
+  const mime = allowedTypes.test(file.mimetype);
+  
+  if (ext && mime) {
+    cb(null, true);
+  } else {
+    cb(new Error('Only image files are allowed'), false);
+  }
+};
+
+const upload = multer({
+  storage,
+  fileFilter,
+  limits: {
+    fileSize: 5 * 1024 * 1024
+  }
+});
+
+export default upload;