From 9c40563e278ec2858a3745c0a1887de7f6ad75fe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9s=20Moya?= <andres.moya@kaleidos.net>
Date: Fri, 31 Jul 2026 13:37:59 +0200
Subject: [PATCH] wip

---
 common/src/app/common/files/changes.cljc      | 14 +++++
 .../test/common_tests/files/changes_test.cljc | 57 +++++++++++++++++++
 2 files changed, 71 insertions(+)
 create mode 100644 common/test/common_tests/files/changes_test.cljc

diff --git a/common/src/app/common/files/changes.cljc b/common/src/app/common/files/changes.cljc
index 34148aa0b2..66f27a37f1 100644
--- a/common/src/app/common/files/changes.cljc
+++ b/common/src/app/common/files/changes.cljc
@@ -1167,6 +1167,20 @@
               (check-shape parent-id [parent-id])
               shapes))))
 
+(defmethod components-changed :reorder-children
+  [file-data {:keys [page-id component-id parent-id]}]
+  (when (or page-id component-id)
+    (let [container (if page-id
+                      (ctpl/get-page file-data page-id)
+                      (get-in file-data [:components component-id]))
+          objects   (:objects container)
+          xform     (comp (filter :main-instance)
+                          (map :component-id))]
+      (when (some? container)
+        (into #{} xform
+              (map #(ctn/get-shape container %)
+                   (cons parent-id (cfh/get-parent-ids objects parent-id))))))))
+
 (defmethod components-changed :add-obj
   [file-data {:keys [parent-id page-id _component-id] :as change}]
   (when page-id
diff --git a/common/test/common_tests/files/changes_test.cljc b/common/test/common_tests/files/changes_test.cljc
new file mode 100644
index 0000000000..b06891cc0a
--- /dev/null
+++ b/common/test/common_tests/files/changes_test.cljc
@@ -0,0 +1,57 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC Sucursal en España SL
+
+(ns common-tests.files.changes-test
+  (:require
+   [app.common.files.changes :as ch]
+   [app.common.uuid :as uuid]
+   [clojure.test :as t]))
+
+(defn- make-file
+  [page-id main-id copy-id]
+  (let [comp-id (uuid/next)
+        child1  (uuid/next)
+        child2  (uuid/next)]
+    {:pages-index {page-id {:id page-id
+                            :objects {main-id {:id main-id
+                                               :type :frame
+                                               :main-instance true
+                                               :component-id comp-id
+                                               :shapes [child1 child2]}
+                                      child1 {:id child1 :parent-id main-id}
+                                      child2 {:id child2 :parent-id main-id}
+                                      copy-id {:id copy-id
+                                               :type :frame
+                                               :component-root true
+                                               :component-id comp-id
+                                               :shapes [(uuid/next) (uuid/next)]}}}}
+     :components {comp-id {:id comp-id
+                           :main-instance-id main-id
+                           :main-instance-page page-id}}}))
+
+(t/deftest components-changed-reorder-children
+  (t/testing "reorder-children in a main instance triggers component sync"
+    (let [page-id (uuid/next)
+          main-id (uuid/next)
+          copy-id (uuid/next)
+          file-data (make-file page-id main-id copy-id)
+          comp-id (-> file-data :components first key)
+          change {:type :reorder-children
+                  :page-id page-id
+                  :parent-id main-id
+                  :shapes [(uuid/next) (uuid/next)]}]
+      (t/is (= #{comp-id} (ch/components-changed file-data change)))))
+
+  (t/testing "reorder-children inside a plain copy does not trigger component sync"
+    (let [page-id (uuid/next)
+          main-id (uuid/next)
+          copy-id (uuid/next)
+          file-data (make-file page-id main-id copy-id)
+          change {:type :reorder-children
+                  :page-id page-id
+                  :parent-id copy-id
+                  :shapes [(uuid/next) (uuid/next)]}]
+      (t/is (= #{} (ch/components-changed file-data change))))))