ready to test

Testing

Signed-off-by: Kenneth Obsequio <k80308392@gmail.com>

middleware/avatar_upload.middleware.js

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+/***********************************************************************************************************************************************************************
+ * File Name: avatar_upload.middleware.js
+ * Type of Program: Middleware
+ * Description: Multer config for avatar uploads.
+ *              Memory storage — buffer is passed directly to S3.
+ *              Accepts JPEG, PNG, WebP, GIF only. 5 MB limit.
+ *
+ * Author: Kenneth Obsequio (@lash0000)
+ * Date Created: Jun. 18, 2026
+ ***********************************************************************************************************************************************************************/
+'use strict';
+
+const multer = require('multer');
+
+const ALLOWED_MIME = new Set(['image/jpeg', 'image/png', 'image/webp', 'image/gif']);
+
+const upload = multer({
+  storage: multer.memoryStorage(),
+  limits: { fileSize: 5 * 1024 * 1024 }, // 5 MB
+  fileFilter(req, file, cb) {
+    if (ALLOWED_MIME.has(file.mimetype)) return cb(null, true);
+    cb(Object.assign(new Error('Only JPEG, PNG, WebP, or GIF images are allowed.'), { code: 'INVALID_TYPE' }));
+  },
+});
+
+const avatarSingle = upload.single('avatar');
+
+// Wraps multer errors into the project's standard error shape.
+const handleAvatarUpload = (req, res, next) => {
+  avatarSingle(req, res, (err) => {
+    if (!err) return next();
+
+    if (err.code === 'LIMIT_FILE_SIZE') {
+      return res.status(400).json({ status: 'error', message: 'Avatar must be under 5 MB.' });
+    }
+    if (err.code === 'INVALID_TYPE') {
+      return res.status(400).json({ status: 'error', message: err.message });
+    }
+
+    console.error('[MULTER AVATAR]', err);
+    return res.status(400).json({ status: 'error', message: err.message ?? 'Upload failed.' });
+  });
+};
+
+module.exports = { handleAvatarUpload };