feat(admin-ui, medusa): admin UI metadata (#3644)

packages/medusa/src/services/order.ts

@@ -957,8 +957,16 @@ class OrderService extends TransactionBaseService {
         where: { id: order.billing_address_id },
       })
 
+      if (address.metadata) {
+        address.metadata = setMetadata(addr, address.metadata)
+      }
+
       await addrRepo.save({ ...addr, ...address })
     } else {
+      if (address.metadata) {
+        address.metadata = setMetadata(null, address.metadata)
+      }
+
       order.billing_address = addrRepo.create({ ...address })
     }
   }

packages/medusa/src/utils/set-metadata.ts

@@ -2,15 +2,15 @@ import { MedusaError } from "medusa-core-utils/dist"
 
 /**
  * Dedicated method to set metadata.
- * @param obj - the entity to apply metadata to.
  * @param metadata - the metadata to set
+ * @param obj - the entity to apply metadata to.
  * @return resolves to the updated result.
  */
 export function setMetadata(
-  obj: { metadata: Record<string, unknown> | null },
+  obj: { metadata: Record<string, unknown> | null } | null | undefined,
   metadata: Record<string, unknown>
 ): Record<string, unknown> {
-  const existing = obj.metadata || {}
+  const existing = obj?.metadata || {}
   const newData = {}
 
   for (const [key, value] of Object.entries(metadata)) {