fix(v1): generate unions of options list values

packages/core/src/transform-schema-to-structure.test.ts

@@ -178,4 +178,46 @@ describe('transformSchemaToStructure', () => {
       },
     });
   });
+
+  it('works with string with a predefined list of options', () => {
+    const normalizedSchema = schemaNormalizer({
+      name: 'default',
+      types: [
+        {
+          type: 'document',
+          name: 'book',
+          fields: [
+            {
+              name: 'genre',
+              type: 'string',
+              options: { list: ['fiction', 'thriller'] },
+            },
+          ],
+        },
+      ],
+    });
+
+    const structure = transformSchemaToStructure({ normalizedSchema });
+
+    expect(structure).toMatchObject({
+      type: 'Array',
+      of: {
+        type: 'Object',
+        properties: [
+          { key: '_type', value: { type: 'String', value: 'book' } },
+          { key: '_id', value: { type: 'String' } },
+          {
+            key: 'genre',
+            value: {
+              type: 'Or',
+              children: [
+                { type: 'String', value: 'thriller' },
+                { type: 'String', value: 'fiction' },
+              ],
+            },
+          },
+        ],
+      },
+    });
+  });
 });

packages/core/src/transform-schema-to-structure.ts

@@ -222,11 +222,22 @@ export function transformSchemaNodeToStructure({
     case 'String':
     case 'Text':
     case 'Url': {
+      const list = 'list' in node && node.list?.length ? node.list : null;
       return createStructure({
-        type: 'String',
-        canBeNull: false,
-        canBeOptional: !node.codegen.required,
-        value: null,
+        type: 'Or',
+        children: (
+          list ??
+          // treat non list fields as lists of 1 item with a null value
+          // so it's handled aswell as a union of string
+          ([{ value: null }] as const)
+        ).map((item) =>
+          createStructure({
+            type: 'String',
+            canBeNull: false,
+            canBeOptional: !node.codegen.required,
+            value: item.value,
+          }),
+        ),
       });
     }
     case 'Object':