From b563b04de3c7237a1c56bb4bed26403007b185c6 Mon Sep 17 00:00:00 2001
From: David Dal Busco <david.dalbusco@outlook.com>
Date: Wed, 15 Apr 2026 20:10:32 +0200
Subject: [PATCH] fix(schema): handle enum and default schema types in idl

---
 packages/schema/src/tests/utils/idl.spec.ts | 20 ++++++++++++++++++++
 packages/schema/src/utils/idl.ts            | 21 +++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/packages/schema/src/tests/utils/idl.spec.ts b/packages/schema/src/tests/utils/idl.spec.ts
index afdf88e6..3a2e2e2e 100644
--- a/packages/schema/src/tests/utils/idl.spec.ts
+++ b/packages/schema/src/tests/utils/idl.spec.ts
@@ -222,4 +222,24 @@ describe('idl', () => {
       });
     });
   });
+
+  describe('object with enum field with default', () => {
+    const Schema = z.object({
+      visibility: z
+        .enum(['public', 'friends_and_followers', 'friends_only'])
+        .default('friends_only')
+    });
+
+    it('converts enum with default to IDL', () => {
+      expect(schemaToIdl({schema: Schema, value: {visibility: 'friends_and_followers'}})).toEqual({
+        visibility: {friends_and_followers: null}
+      });
+    });
+
+    it('converts enum with default from IDL', () => {
+      expect(
+        schemaFromIdl({schema: Schema, value: {visibility: {friends_and_followers: null}}})
+      ).toEqual({visibility: 'friends_and_followers'});
+    });
+  });
 });
diff --git a/packages/schema/src/utils/idl.ts b/packages/schema/src/utils/idl.ts
index b43bf4ce..ca2b86a9 100644
--- a/packages/schema/src/utils/idl.ts
+++ b/packages/schema/src/utils/idl.ts
@@ -69,6 +69,14 @@ export const schemaToIdl = ({schema, value}: IdlParams): unknown => {
     );
   }
 
+  if (schema instanceof z.ZodDefault) {
+    return schemaToIdl({schema: schema._zod.def.innerType, value});
+  }
+
+  if (schema instanceof z.ZodEnum) {
+    return {[value as string]: null};
+  }
+
   return value;
 };
 
@@ -147,5 +155,18 @@ export const schemaFromIdl = ({schema, value}: IdlParams): unknown => {
     );
   }
 
+  if (schema instanceof z.ZodDefault) {
+    return schemaFromIdl({schema: schema._zod.def.innerType, value});
+  }
+
+  if (schema instanceof z.ZodEnum) {
+    const obj = value as Record<string, unknown>;
+    const keys = Object.keys(obj);
+    if (keys.length === 1) {
+      return keys[0];
+    }
+    return value;
+  }
+
   return value;
 };