feat(division): create tree item converter for division

app/handlers/_shared.handler.ts

@@ -6,6 +6,7 @@ import type { Installation } from '~/models/installation'
 import type { Specialist } from '~/models/specialist'
 import type { Uom } from '~/models/uom'
 import type { Unit } from '~/models/unit'
+import type { TreeItem } from '~/models/_model'
 
 // constants
 import { encounterClassCodes } from '~/lib/constants'
@@ -124,3 +125,20 @@ export const getUomList = async () => {
     uoms.value = currentUoms.map((uom: Uom) => ({ value: uom.code || uom.erp_id, label: uom.name }))
   }
 }
+
+/**
+ * Convert division response (with childrens) to TreeItem[]
+ * @param divisions Array of division objects from API
+ * @returns TreeItem[]
+ */
+export function convertDivisionToTreeItems(divisions: any[]): TreeItem[] {
+  return divisions.map((division) => ({
+    value: division.id ? String(division.id) : division.code,
+    label: division.name,
+    hasChildren: Array.isArray(division.childrens) && division.childrens.length > 0,
+    children:
+      Array.isArray(division.childrens) && division.childrens.length > 0
+        ? convertDivisionToTreeItems(division.childrens)
+        : undefined,
+  }))
+}