From 087469f1f303285c3c234b367f60dbe8a0e9258a Mon Sep 17 00:00:00 2001
From: "F. Eugene Aumson" <feuGeneA@users.noreply.github.com>
Date: Thu, 13 Dec 2018 11:31:07 -0800
Subject: Support ALL the schemas

---
 python-packages/json_schemas/setup.py              |  2 +-
 .../src/zero_ex/json_schemas/__init__.py           | 39 +++++++++++-----------
 .../json_schemas/stubs/stringcase/__init__.pyi     |  2 ++
 3 files changed, 23 insertions(+), 20 deletions(-)
 create mode 100644 python-packages/json_schemas/stubs/stringcase/__init__.pyi

diff --git a/python-packages/json_schemas/setup.py b/python-packages/json_schemas/setup.py
index f8c3cf14b..7813f101f 100755
--- a/python-packages/json_schemas/setup.py
+++ b/python-packages/json_schemas/setup.py
@@ -136,7 +136,7 @@ setup(
         "publish": PublishCommand,
         "publish_docs": PublishDocsCommand,
     },
-    install_requires=["jsonschema", "mypy_extensions"],
+    install_requires=["jsonschema", "mypy_extensions", "stringcase"],
     extras_require={
         "dev": [
             "bandit",
diff --git a/python-packages/json_schemas/src/zero_ex/json_schemas/__init__.py b/python-packages/json_schemas/src/zero_ex/json_schemas/__init__.py
index a76a2fa3b..f609ea103 100644
--- a/python-packages/json_schemas/src/zero_ex/json_schemas/__init__.py
+++ b/python-packages/json_schemas/src/zero_ex/json_schemas/__init__.py
@@ -6,6 +6,7 @@ from typing import Mapping
 
 from pkg_resources import resource_string
 import jsonschema
+from stringcase import snakecase
 
 
 class _LocalRefResolver(jsonschema.RefResolver):
@@ -13,19 +14,23 @@ class _LocalRefResolver(jsonschema.RefResolver):
 
     def __init__(self):
         """Initialize a new instance."""
-        self.ref_to_file = {
-            "/addressSchema": "address_schema.json",
-            "/hexSchema": "hex_schema.json",
-            "/orderSchema": "order_schema.json",
-            "/wholeNumberSchema": "whole_number_schema.json",
-            "/ECSignature": "ec_signature_schema.json",
-            "/signedOrderSchema": "signed_order_schema.json",
-            "/ecSignatureParameterSchema": (
-                "ec_signature_parameter_schema.json" + ""
-            ),
-        }
         jsonschema.RefResolver.__init__(self, "", "")
 
+    @staticmethod
+    def _ref_to_file(ref: str) -> str:
+        """Translate a JSON schema ref to its corresponding file name.
+
+        >>> _LocalRefResolver._ref_to_file("/addressSchema")
+        'address_schema.json'
+        """
+        _ref = ref.lstrip("/")
+
+        # handle weird special cases
+        _ref = _ref.replace("ECSignature", "EcSignature")
+        _ref = _ref.replace("Schema", "")
+
+        return f"{snakecase(_ref)}_schema.json"
+
     def resolve_from_url(self, url: str) -> str:
         """Resolve the given URL.
 
@@ -35,15 +40,11 @@ class _LocalRefResolver(jsonschema.RefResolver):
                    `url` does not exist.
         """
         ref = url.replace("file://", "")
-        if ref in self.ref_to_file:
-            return json.loads(
-                resource_string(
-                    "zero_ex.json_schemas", f"schemas/{self.ref_to_file[ref]}"
-                )
+        return json.loads(
+            resource_string(
+                "zero_ex.json_schemas",
+                f"schemas/{_LocalRefResolver._ref_to_file(ref)}",
             )
-        raise jsonschema.ValidationError(
-            f"Unknown ref '{ref}'. "
-            + f"Known refs: {list(self.ref_to_file.keys())}."
         )
 
 
diff --git a/python-packages/json_schemas/stubs/stringcase/__init__.pyi b/python-packages/json_schemas/stubs/stringcase/__init__.pyi
new file mode 100644
index 000000000..56d784cf5
--- /dev/null
+++ b/python-packages/json_schemas/stubs/stringcase/__init__.pyi
@@ -0,0 +1,2 @@
+def snakecase(_: str):
+    ...
-- 
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