From e828c88290927f009ccf3ff479a41623207ffcec Mon Sep 17 00:00:00 2001
From: Arjo Bruijnes <arjo.bruijnes@mendix.com>
Date: Wed, 14 Aug 2024 16:11:33 +0200
Subject: [PATCH] Generate types for metadata attribute properties

---
 .../src/typings-generator/WidgetXml.ts             |  1 +
 .../src/typings-generator/generateClientTypes.ts   | 14 +++++++++++---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/packages/pluggable-widgets-tools/src/typings-generator/WidgetXml.ts b/packages/pluggable-widgets-tools/src/typings-generator/WidgetXml.ts
index 77259028..8f5b548e 100644
--- a/packages/pluggable-widgets-tools/src/typings-generator/WidgetXml.ts
+++ b/packages/pluggable-widgets-tools/src/typings-generator/WidgetXml.ts
@@ -44,6 +44,7 @@ export interface Property {
             | "widgets"
             | "selection";
         isList?: string;
+        isMetaData?: string;
         defaultValue?: string;
         required?: string;
         isDefault?: string;
diff --git a/packages/pluggable-widgets-tools/src/typings-generator/generateClientTypes.ts b/packages/pluggable-widgets-tools/src/typings-generator/generateClientTypes.ts
index 190b39d3..2ddb8bff 100644
--- a/packages/pluggable-widgets-tools/src/typings-generator/generateClientTypes.ts
+++ b/packages/pluggable-widgets-tools/src/typings-generator/generateClientTypes.ts
@@ -133,14 +133,22 @@ function toClientPropType(
                 .flatMap(ats => ats.attributeType)
                 .map(at => toAttributeClientType(at.$.name));
             const unionType = toUniqueUnionType(types);
-         
+            const linkedToDataSource = !!prop.$.dataSource;
+
+            if (prop.$.isMetaData === "true") {
+                if (!linkedToDataSource) {
+                    throw new Error(`[XML] Attribute property can only have isMetaData="true" when linked to a datasource`);
+                }
+                return `AttributeMetaData<${unionType}>`
+            }
+
             if (!prop.associationTypes?.length) {
-                return prop.$.dataSource ? `ListAttributeValue<${unionType}>` : `EditableValue<${unionType}>`;
+                return toAttributeOutputType("Reference", linkedToDataSource, unionType);
             }
             else {
                 const reftypes = prop.associationTypes
                     .flatMap(ats => ats.associationType)
-                    .map(at => toAttributeOutputType(at.$.name, !!prop.$.dataSource, unionType));
+                    .map(at => toAttributeOutputType(at.$.name, linkedToDataSource, unionType));
                 return toUniqueUnionType(reftypes);
             }
         }