From f993853db3e233f05a55de5ba2a87b77acf041aa Mon Sep 17 00:00:00 2001
From: erdgeist <erdgeist@erdgeist.org>
Date: Thu, 23 Jul 2026 17:49:18 +0200
Subject: Record asset deltas at publish, with changed assets as participants

---
 test/models/node_action_test.rb |  9 ++++---
 test/models/node_test.rb        | 52 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 5 deletions(-)

(limited to 'test')

diff --git a/test/models/node_action_test.rb b/test/models/node_action_test.rb
index 849b36f4..4672456a 100644
--- a/test/models/node_action_test.rb
+++ b/test/models/node_action_test.rb
@@ -59,7 +59,7 @@ class NodeActionTest < ActiveSupport::TestCase
     assert_nil NodeAction.head_diff(old_page, build_page(:template_name => "standard_template"))[:template_changed]
   end
 
-  test "assets_changed flag when the attached set differs" do
+  test "asset delta when the attached set differs" do
     asset = Asset.create!(:name => "diff probe",
                           :upload_file_name    => "test_image.png",
                           :upload_content_type => "image/png",
@@ -68,10 +68,9 @@ class NodeActionTest < ActiveSupport::TestCase
     old_page, new_page = build_page, build_page
     new_page.related_assets.create!(:asset_id => asset.id, :position => 1)
 
-
-    diff = NodeAction.head_diff(old_page, new_page.reload)
-    assert diff[:assets_changed]
-    assert_nil NodeAction.head_diff(old_page, old_page)[:assets_changed]
+    diff = NodeAction.head_diff(old_page, new_page)
+    assert diff[:assets].present?
+    assert_nil NodeAction.head_diff(old_page, old_page)[:assets]
   end
 
   test "default-locale abstract and body changes become flags, only when true" do
diff --git a/test/models/node_test.rb b/test/models/node_test.rb
index 0083b088..8bdb90ee 100644
--- a/test/models/node_test.rb
+++ b/test/models/node_test.rb
@@ -728,6 +728,58 @@ class NodeTest < ActiveSupport::TestCase
                  NodeAction.order(:id).last(2).map(&:action).sort
   end
 
+  test "publish records the asset delta with changed assets as participants" do
+    node = Node.root.children.create!(:slug => "publish_asset_delta")
+    kept  = Asset.create!(:name => "Kept",  :upload_content_type => "image/png")
+    added = Asset.create!(:name => "Added", :upload_content_type => "image/png")
+    node.draft.related_assets.create!(:asset => kept)
+    node.publish_draft!(@user1)
+
+    node.lock_for_editing!(@user1)
+    node.create_new_draft(@user1)
+    node.draft.related_assets.create!(:asset => added)
+    node.publish_draft!(@user1)
+
+    action = node.node_actions.where(:action => "publish").order(:id).last
+    assert_equal ["Added"], action.metadata.dig("assets", "added")
+    assert_nil action.metadata.dig("assets", "removed")
+    subjects = action.action_participants.map { |p| [p.subject_type, p.subject_id] }
+    assert_includes subjects, ["Asset", added.id]
+    assert_not_includes subjects, ["Asset", kept.id]
+  end
+
+  test "publish without an asset change writes no assets key" do
+    node = Node.root.children.create!(:slug => "publish_asset_static")
+    node.draft.related_assets.create!(:asset => Asset.create!(:name => "Steady"))
+    node.publish_draft!(@user1)
+
+    node.lock_for_editing!(@user1)
+    node.create_new_draft(@user1)
+    node.publish_draft!(@user1)
+
+    action = node.node_actions.where(:action => "publish").order(:id).last
+    assert_nil action.metadata["assets"]
+    assert_equal [["Node", node.id]],
+                 action.action_participants.map { |p| [p.subject_type, p.subject_id] }
+  end
+
+  test "pure reordering is recorded as assets_reordered" do
+    node = Node.root.children.create!(:slug => "publish_asset_reorder")
+    a1, a2 = Asset.create!(:name => "First"), Asset.create!(:name => "Second")
+    node.draft.related_assets.create!(:asset => a1)
+    node.draft.related_assets.create!(:asset => a2)
+    node.publish_draft!(@user1)
+
+    node.lock_for_editing!(@user1)
+    node.create_new_draft(@user1)
+    node.draft.related_assets.reload.first.move_to_bottom
+    node.publish_draft!(@user1)
+
+    action = node.node_actions.where(:action => "publish").order(:id).last
+    assert action.metadata["assets_reordered"]
+    assert_nil action.metadata["assets"]
+  end
+
   test "restore_revision! logs a publish via revision" do
     node = create_node_with_published_page
     Globalize.with_locale(:de) { node.head.update!(:title => "First") }
-- 
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