src(attrs): add cattrs converter

Author: gegnew

cellengine/utils/__init__.py

@@ -0,0 +1,4 @@
+# flake8: noqa
+
+from .readonly import readonly
+from .converter import converter

cellengine/utils/converter.py

@@ -0,0 +1,30 @@
+from cellengine.utils.helpers import to_camel_case
+from attr import has, fields
+from cattr.converters import GenConverter
+from cattr.gen import make_dict_unstructure_fn, make_dict_structure_fn, override
+
+
+def get_converter():
+    converter = GenConverter()
+
+    def to_camel_case_unstructure(cls):
+        return make_dict_unstructure_fn(
+            cls,
+            converter,
+            **{a.name: override(rename=to_camel_case(a.name)) for a in fields(cls)}
+        )
+
+    def to_camel_case_structure(cls):
+        return make_dict_structure_fn(
+            cls,
+            converter,
+            **{a.name: override(rename=to_camel_case(a.name)) for a in fields(cls)}
+        )
+
+    converter.register_unstructure_hook_factory(has, to_camel_case_unstructure)
+    converter.register_structure_hook_factory(has, to_camel_case_structure)
+
+    return converter
+
+
+converter = get_converter()

cellengine/utils/helpers.py

@@ -18,6 +18,13 @@ def check_id(_id):
         ValueError("Object has an invalid ID.", e)
 
 
+def to_camel_case(snake_str: str) -> str:
+    if snake_str == "_id":
+        return snake_str
+    components = snake_str.split("_")
+    return components[0] + "".join(x.title() for x in components[1:])
+
+
 def get_args_as_kwargs(cls_context, locals):
     # fmt: off
     arg_names = cls_context.create.__code__.co_varnames[