add file size limit of 1 MB

server/src/middlewares/upload.js

@@ -22,6 +22,7 @@ const storage = multer.diskStorage({
 
 const upload = multer({
   storage,
+  limits: { fileSize: 1 * 1024 * 1024 }, // 1MB limit
   fileFilter(req, file, callback) {
     if (file.mimetype == 'application/pdf') {
       callback(null, true);
@@ -30,13 +31,25 @@ const upload = multer({
       callback(null, false);
     }
   },
-});
+}).single('waiver');
+
+router.post('/upload-waiver', (req, res) => {
+  upload(req, res, (err) => {
+    if (err instanceof multer.MulterError) {
+      if (err.code === 'LIMIT_FILE_SIZE') {
+        return res.status(400).send('File is too large. Maximum size is 1MB.');
+      }
+      return res.status(400).send('An error occurred while uploading the file.');
+    } else if (err) {
+      return res.status(400).send('An unknown error occurred.');
+    }
 
-router.post('/upload-waiver', upload.single('waiver'), (req, res) => {
-  if (!req.file) {
-    return res.status(400).send('No file uploaded.');
-  }
-  res.status(200).send('File uploaded successfully.');
+    // all good
+    if (!req.file) {
+      return res.status(400).send('No file uploaded.');
+    }
+    res.status(200).send('File uploaded successfully.');
+  });
 });
 
 module.exports = router;