feat: automatically canonize user address arg in routers

backend/app/infrastructure/__init__.py

@@ -1,5 +1,7 @@
 from flask_restx import Resource
 
+from eth_utils import to_checksum_address
+
 from gql import Client
 from gql.transport.requests import RequestsHTTPTransport
 
@@ -19,12 +21,29 @@ class OctantResource(Resource):
     def __init__(self, *args, **kwargs):
         Resource.__init__(self, *args, *kwargs)
 
+    @classmethod
+    def canonize_address(cls, field_name: str = "user_address", force=True):
+        def _add_address_canonization(handler):
+            def _decorated(*args, **kwargs):
+                field_value = kwargs.get(field_name)
+                if force or field_value is not None:
+                    updated_field = to_checksum_address(field_value)
+                    kwargs.update([(field_name, updated_field)])
+
+                return handler(*args, **kwargs)
+
+            return _decorated
+
+        return _add_address_canonization
+
     def __getattribute__(self, name):
+        user_address_canonizer = OctantResource.canonize_address(force=False)
+
         attr = object.__getattribute__(self, name)
 
         decorator = default_decorators.get(name)
         if decorator is not None:
-            attr = decorator(attr)
+            attr = user_address_canonizer(decorator(attr))
 
         return attr