[add]: enforce content type json

app/middlewares/request_validator.py

@@ -1,11 +1,16 @@
-# app/middlewares/request_validator.py
+from functools import wraps
 from flask import request
 from app.helpers.response_helper import ResponseHelper
+from app.utils.logger import logger
 
-def validate_json():
-    """Ensure request has valid JSON"""
-    if not request.is_json:
-        return ResponseHelper.error(
-                message="Request must be JSON",
-                status_code=415
-            )
+def validate_json(f):
+    """Decorator to ensure the request has a valid JSON body."""
+    @wraps(f)
+    def decorated_function(*args, **kwargs):
+        if not request.is_json:
+            logger.error("Invalid request: Request must be JSON.")
+            return ResponseHelper.error(message="Request must be JSON", status_code=415)
+
+        return f(*args, **kwargs)
+
+    return decorated_function